Add prebuilt browseable samples as static files.
Change-Id: Ifb5382223343400882834d2dd9c182c3df602e34
This commit is contained in:
Dirk Dougherty
@@ -0,0 +1,327 @@
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/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.android.basicandroidkeystore;
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import android.content.Context;
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import android.os.Bundle;
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import android.security.KeyPairGeneratorSpec;
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import android.support.v4.app.Fragment;
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import android.util.Base64;
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import android.view.MenuItem;
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import com.example.android.common.logger.Log;
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import java.io.IOException;
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import java.math.BigInteger;
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import java.security.InvalidAlgorithmParameterException;
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import java.security.InvalidKeyException;
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import java.security.KeyPair;
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import java.security.KeyPairGenerator;
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import java.security.KeyStore;
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import java.security.KeyStoreException;
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import java.security.NoSuchAlgorithmException;
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import java.security.NoSuchProviderException;
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import java.security.Signature;
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import java.security.SignatureException;
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import java.security.UnrecoverableEntryException;
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import java.security.cert.CertificateException;
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import java.util.Calendar;
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import java.util.GregorianCalendar;
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import javax.security.auth.x500.X500Principal;
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public class BasicAndroidKeyStoreFragment extends Fragment {
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public static final String TAG = "BasicAndroidKeyStoreFragment";
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// BEGIN_INCLUDE(values)
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public static final String SAMPLE_ALIAS = "myKey";
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// Some sample data to sign, and later verify using the generated signature.
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public static final String SAMPLE_INPUT="Hello, Android!";
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// Just a handy place to store the signature in between signing and verifying.
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public String mSignatureStr = null;
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// You can store multiple key pairs in the Key Store. The string used to refer to the Key you
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// want to store, or later pull, is referred to as an "alias" in this case, because calling it
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// a key, when you use it to retrieve a key, would just be irritating.
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private String mAlias = null;
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// END_INCLUDE(values)
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setHasOptionsMenu(true);
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setAlias(SAMPLE_ALIAS);
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}
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@Override
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public void onActivityCreated(Bundle savedInstanceState) {
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super.onActivityCreated(savedInstanceState);
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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switch (item.getItemId()) {
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case R.id.btn_create_keys:
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try {
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createKeys(getActivity());
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Log.d(TAG, "Keys created");
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return true;
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} catch (NoSuchAlgorithmException e) {
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Log.w(TAG, "RSA not supported", e);
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} catch (InvalidAlgorithmParameterException e) {
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Log.w(TAG, "No such provider: AndroidKeyStore");
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} catch (NoSuchProviderException e) {
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Log.w(TAG, "Invalid Algorithm Parameter Exception", e);
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}
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return true;
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case R.id.btn_sign_data:
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try {
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mSignatureStr = signData(SAMPLE_INPUT);
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} catch (KeyStoreException e) {
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Log.w(TAG, "KeyStore not Initialized", e);
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} catch (UnrecoverableEntryException e) {
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Log.w(TAG, "KeyPair not recovered", e);
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} catch (NoSuchAlgorithmException e) {
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Log.w(TAG, "RSA not supported", e);
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} catch (InvalidKeyException e) {
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Log.w(TAG, "Invalid Key", e);
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} catch (SignatureException e) {
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Log.w(TAG, "Invalid Signature", e);
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} catch (IOException e) {
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Log.w(TAG, "IO Exception", e);
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} catch (CertificateException e) {
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Log.w(TAG, "Error occurred while loading certificates", e);
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}
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Log.d(TAG, "Signature: " + mSignatureStr);
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return true;
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case R.id.btn_verify_data:
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boolean verified = false;
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try {
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if (mSignatureStr != null) {
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verified = verifyData(SAMPLE_INPUT, mSignatureStr);
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}
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} catch (KeyStoreException e) {
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Log.w(TAG, "KeyStore not Initialized", e);
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} catch (CertificateException e) {
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Log.w(TAG, "Error occurred while loading certificates", e);
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} catch (NoSuchAlgorithmException e) {
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Log.w(TAG, "RSA not supported", e);
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} catch (IOException e) {
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Log.w(TAG, "IO Exception", e);
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} catch (UnrecoverableEntryException e) {
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Log.w(TAG, "KeyPair not recovered", e);
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} catch (InvalidKeyException e) {
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Log.w(TAG, "Invalid Key", e);
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} catch (SignatureException e) {
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Log.w(TAG, "Invalid Signature", e);
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}
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if (verified) {
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Log.d(TAG, "Data Signature Verified");
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} else {
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Log.d(TAG, "Data not verified.");
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}
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return true;
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}
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return false;
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}
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/**
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* Creates a public and private key and stores it using the Android Key Store, so that only
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* this application will be able to access the keys.
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*/
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public void createKeys(Context context) throws NoSuchProviderException,
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NoSuchAlgorithmException, InvalidAlgorithmParameterException {
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// BEGIN_INCLUDE(create_valid_dates)
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// Create a start and end time, for the validity range of the key pair that's about to be
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// generated.
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Calendar start = new GregorianCalendar();
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Calendar end = new GregorianCalendar();
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end.add(1, Calendar.YEAR);
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//END_INCLUDE(create_valid_dates)
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// BEGIN_INCLUDE(create_spec)
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// The KeyPairGeneratorSpec object is how parameters for your key pair are passed
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// to the KeyPairGenerator. For a fun home game, count how many classes in this sample
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// start with the phrase "KeyPair".
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KeyPairGeneratorSpec spec =
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new KeyPairGeneratorSpec.Builder(context)
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// You'll use the alias later to retrieve the key. It's a key for the key!
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.setAlias(mAlias)
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// The subject used for the self-signed certificate of the generated pair
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.setSubject(new X500Principal("CN=" + mAlias))
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// The serial number used for the self-signed certificate of the
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// generated pair.
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.setSerialNumber(BigInteger.valueOf(1337))
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// Date range of validity for the generated pair.
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.setStartDate(start.getTime())
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.setEndDate(end.getTime())
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.build();
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// END_INCLUDE(create_spec)
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// BEGIN_INCLUDE(create_keypair)
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// Initialize a KeyPair generator using the the intended algorithm (in this example, RSA
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// and the KeyStore. This example uses the AndroidKeyStore.
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KeyPairGenerator kpGenerator = KeyPairGenerator
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.getInstance(SecurityConstants.TYPE_RSA,
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SecurityConstants.KEYSTORE_PROVIDER_ANDROID_KEYSTORE);
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kpGenerator.initialize(spec);
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KeyPair kp = kpGenerator.generateKeyPair();
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Log.d(TAG, "Public Key is: " + kp.getPublic().toString());
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// END_INCLUDE(create_keypair)
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}
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/**
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* Signs the data using the key pair stored in the Android Key Store. This signature can be
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* used with the data later to verify it was signed by this application.
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* @return A string encoding of the data signature generated
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*/
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public String signData(String inputStr) throws KeyStoreException,
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UnrecoverableEntryException, NoSuchAlgorithmException, InvalidKeyException,
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SignatureException, IOException, CertificateException {
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byte[] data = inputStr.getBytes();
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// BEGIN_INCLUDE(sign_load_keystore)
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KeyStore ks = KeyStore.getInstance(SecurityConstants.KEYSTORE_PROVIDER_ANDROID_KEYSTORE);
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// Weird artifact of Java API. If you don't have an InputStream to load, you still need
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// to call "load", or it'll crash.
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ks.load(null);
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// Load the key pair from the Android Key Store
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KeyStore.Entry entry = ks.getEntry(mAlias, null);
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/* If the entry is null, keys were never stored under this alias.
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* Debug steps in this situation would be:
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* -Check the list of aliases by iterating over Keystore.aliases(), be sure the alias
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* exists.
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* -If that's empty, verify they were both stored and pulled from the same keystore
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* "AndroidKeyStore"
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*/
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if (entry == null) {
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Log.w(TAG, "No key found under alias: " + mAlias);
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Log.w(TAG, "Exiting signData()...");
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return null;
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}
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/* If entry is not a KeyStore.PrivateKeyEntry, it might have gotten stored in a previous
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* iteration of your application that was using some other mechanism, or been overwritten
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* by something else using the same keystore with the same alias.
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* You can determine the type using entry.getClass() and debug from there.
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*/
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if (!(entry instanceof KeyStore.PrivateKeyEntry)) {
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Log.w(TAG, "Not an instance of a PrivateKeyEntry");
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Log.w(TAG, "Exiting signData()...");
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return null;
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}
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// END_INCLUDE(sign_data)
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// BEGIN_INCLUDE(sign_create_signature)
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// This class doesn't actually represent the signature,
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// just the engine for creating/verifying signatures, using
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// the specified algorithm.
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Signature s = Signature.getInstance(SecurityConstants.SIGNATURE_SHA256withRSA);
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// Initialize Signature using specified private key
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s.initSign(((KeyStore.PrivateKeyEntry) entry).getPrivateKey());
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// Sign the data, store the result as a Base64 encoded String.
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s.update(data);
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byte[] signature = s.sign();
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String result = Base64.encodeToString(signature, Base64.DEFAULT);
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// END_INCLUDE(sign_data)
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return result;
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}
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/**
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* Given some data and a signature, uses the key pair stored in the Android Key Store to verify
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* that the data was signed by this application, using that key pair.
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* @param input The data to be verified.
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* @param signatureStr The signature provided for the data.
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* @return A boolean value telling you whether the signature is valid or not.
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*/
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public boolean verifyData(String input, String signatureStr) throws KeyStoreException,
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CertificateException, NoSuchAlgorithmException, IOException,
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UnrecoverableEntryException, InvalidKeyException, SignatureException {
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byte[] data = input.getBytes();
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byte[] signature;
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// BEGIN_INCLUDE(decode_signature)
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// Make sure the signature string exists. If not, bail out, nothing to do.
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if (signatureStr == null) {
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Log.w(TAG, "Invalid signature.");
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Log.w(TAG, "Exiting verifyData()...");
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return false;
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}
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try {
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// The signature is going to be examined as a byte array,
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// not as a base64 encoded string.
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signature = Base64.decode(signatureStr, Base64.DEFAULT);
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} catch (IllegalArgumentException e) {
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// signatureStr wasn't null, but might not have been encoded properly.
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// It's not a valid Base64 string.
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return false;
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}
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// END_INCLUDE(decode_signature)
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KeyStore ks = KeyStore.getInstance("AndroidKeyStore");
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// Weird artifact of Java API. If you don't have an InputStream to load, you still need
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// to call "load", or it'll crash.
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ks.load(null);
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// Load the key pair from the Android Key Store
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KeyStore.Entry entry = ks.getEntry(mAlias, null);
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if (entry == null) {
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Log.w(TAG, "No key found under alias: " + mAlias);
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Log.w(TAG, "Exiting verifyData()...");
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return false;
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}
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if (!(entry instanceof KeyStore.PrivateKeyEntry)) {
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Log.w(TAG, "Not an instance of a PrivateKeyEntry");
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return false;
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}
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// This class doesn't actually represent the signature,
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// just the engine for creating/verifying signatures, using
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// the specified algorithm.
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Signature s = Signature.getInstance(SecurityConstants.SIGNATURE_SHA256withRSA);
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// BEGIN_INCLUDE(verify_data)
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// Verify the data.
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s.initVerify(((KeyStore.PrivateKeyEntry) entry).getCertificate());
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s.update(data);
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boolean valid = s.verify(signature);
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return valid;
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// END_INCLUDE(verify_data)
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}
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public void setAlias(String alias) {
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mAlias = alias;
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}
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}
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@@ -0,0 +1,78 @@
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/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.android.basicandroidkeystore;
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import android.os.Bundle;
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import android.support.v4.app.FragmentTransaction;
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import android.view.Menu;
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import com.example.android.common.activities.SampleActivityBase;
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import com.example.android.common.logger.Log;
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import com.example.android.common.logger.LogFragment;
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import com.example.android.common.logger.LogWrapper;
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import com.example.android.common.logger.MessageOnlyLogFilter;
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/**
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* A simple launcher activity containing a summary sample description
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* and a few action bar buttons.
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*/
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public class MainActivity extends SampleActivityBase {
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public static final String TAG = "MainActivity";
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public static final String FRAGTAG = "BasicAndroidKeyStoreFragment";
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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BasicAndroidKeyStoreFragment fragment = new BasicAndroidKeyStoreFragment();
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transaction.add(fragment, FRAGTAG);
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transaction.commit();
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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getMenuInflater().inflate(R.menu.main, menu);
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return true;
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}
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/** Create a chain of targets that will receive log data */
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@Override
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public void initializeLogging() {
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// Wraps Android's native log framework.
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LogWrapper logWrapper = new LogWrapper();
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// Using Log, front-end to the logging chain, emulates android.util.log method signatures.
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Log.setLogNode(logWrapper);
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// Filter strips out everything except the message text.
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MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
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logWrapper.setNext(msgFilter);
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// On screen logging via a fragment with a TextView.
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LogFragment logFragment = (LogFragment) getSupportFragmentManager()
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.findFragmentById(R.id.log_fragment);
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msgFilter.setNext(logFragment.getLogView());
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Log.i(TAG, "Ready");
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}
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}
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@@ -0,0 +1,33 @@
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/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
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* http://www.apache.org/licenses/LICENSE-2.0
|
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*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
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package com.example.android.basicandroidkeystore;
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/**
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* Helper class, contains several constants used when encrypting/decrypting data on Android.
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* This class should not be considered a complete list of the algorithms, keystore types,
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* or signature types within the Android Platform, only the more common ones.
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*/
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public class SecurityConstants {
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public static final String KEYSTORE_PROVIDER_ANDROID_KEYSTORE = "AndroidKeyStore";
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public static final String TYPE_RSA = "RSA";
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public static final String TYPE_DSA = "DSA";
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public static final String TYPE_BKS = "BKS";
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public static final String SIGNATURE_SHA256withRSA = "SHA256withRSA";
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public static final String SIGNATURE_SHA512withRSA = "SHA512withRSA";
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}
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@@ -0,0 +1,52 @@
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/*
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* Copyright 2013 The Android Open Source Project
|
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*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
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package com.example.android.common.activities;
|
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import android.os.Bundle;
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import android.support.v4.app.FragmentActivity;
|
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import com.example.android.common.logger.Log;
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import com.example.android.common.logger.LogWrapper;
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/**
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* Base launcher activity, to handle most of the common plumbing for samples.
|
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*/
|
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public class SampleActivityBase extends FragmentActivity {
|
||||
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||||
public static final String TAG = "SampleActivityBase";
|
||||
|
||||
@Override
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||||
protected void onCreate(Bundle savedInstanceState) {
|
||||
super.onCreate(savedInstanceState);
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||||
}
|
||||
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||||
@Override
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||||
protected void onStart() {
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||||
super.onStart();
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||||
initializeLogging();
|
||||
}
|
||||
|
||||
/** Set up targets to receive log data */
|
||||
public void initializeLogging() {
|
||||
// Using Log, front-end to the logging chain, emulates android.util.log method signatures.
|
||||
// Wraps Android's native log framework
|
||||
LogWrapper logWrapper = new LogWrapper();
|
||||
Log.setLogNode(logWrapper);
|
||||
|
||||
Log.i(TAG, "Ready");
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,236 @@
|
||||
/*
|
||||
* Copyright (C) 2013 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
package com.example.android.common.logger;
|
||||
|
||||
/**
|
||||
* Helper class for a list (or tree) of LoggerNodes.
|
||||
*
|
||||
* <p>When this is set as the head of the list,
|
||||
* an instance of it can function as a drop-in replacement for {@link android.util.Log}.
|
||||
* Most of the methods in this class server only to map a method call in Log to its equivalent
|
||||
* in LogNode.</p>
|
||||
*/
|
||||
public class Log {
|
||||
// Grabbing the native values from Android's native logging facilities,
|
||||
// to make for easy migration and interop.
|
||||
public static final int NONE = -1;
|
||||
public static final int VERBOSE = android.util.Log.VERBOSE;
|
||||
public static final int DEBUG = android.util.Log.DEBUG;
|
||||
public static final int INFO = android.util.Log.INFO;
|
||||
public static final int WARN = android.util.Log.WARN;
|
||||
public static final int ERROR = android.util.Log.ERROR;
|
||||
public static final int ASSERT = android.util.Log.ASSERT;
|
||||
|
||||
// Stores the beginning of the LogNode topology.
|
||||
private static LogNode mLogNode;
|
||||
|
||||
/**
|
||||
* Returns the next LogNode in the linked list.
|
||||
*/
|
||||
public static LogNode getLogNode() {
|
||||
return mLogNode;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the LogNode data will be sent to.
|
||||
*/
|
||||
public static void setLogNode(LogNode node) {
|
||||
mLogNode = node;
|
||||
}
|
||||
|
||||
/**
|
||||
* Instructs the LogNode to print the log data provided. Other LogNodes can
|
||||
* be chained to the end of the LogNode as desired.
|
||||
*
|
||||
* @param priority Log level of the data being logged. Verbose, Error, etc.
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
public static void println(int priority, String tag, String msg, Throwable tr) {
|
||||
if (mLogNode != null) {
|
||||
mLogNode.println(priority, tag, msg, tr);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Instructs the LogNode to print the log data provided. Other LogNodes can
|
||||
* be chained to the end of the LogNode as desired.
|
||||
*
|
||||
* @param priority Log level of the data being logged. Verbose, Error, etc.
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged. The actual message to be logged.
|
||||
*/
|
||||
public static void println(int priority, String tag, String msg) {
|
||||
println(priority, tag, msg, null);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at VERBOSE priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
public static void v(String tag, String msg, Throwable tr) {
|
||||
println(VERBOSE, tag, msg, tr);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at VERBOSE priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
*/
|
||||
public static void v(String tag, String msg) {
|
||||
v(tag, msg, null);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Prints a message at DEBUG priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
public static void d(String tag, String msg, Throwable tr) {
|
||||
println(DEBUG, tag, msg, tr);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at DEBUG priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
*/
|
||||
public static void d(String tag, String msg) {
|
||||
d(tag, msg, null);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at INFO priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
public static void i(String tag, String msg, Throwable tr) {
|
||||
println(INFO, tag, msg, tr);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at INFO priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
*/
|
||||
public static void i(String tag, String msg) {
|
||||
i(tag, msg, null);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at WARN priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
public static void w(String tag, String msg, Throwable tr) {
|
||||
println(WARN, tag, msg, tr);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at WARN priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
*/
|
||||
public static void w(String tag, String msg) {
|
||||
w(tag, msg, null);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at WARN priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
public static void w(String tag, Throwable tr) {
|
||||
w(tag, null, tr);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at ERROR priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
public static void e(String tag, String msg, Throwable tr) {
|
||||
println(ERROR, tag, msg, tr);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at ERROR priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
*/
|
||||
public static void e(String tag, String msg) {
|
||||
e(tag, msg, null);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at ASSERT priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
public static void wtf(String tag, String msg, Throwable tr) {
|
||||
println(ASSERT, tag, msg, tr);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at ASSERT priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged.
|
||||
*/
|
||||
public static void wtf(String tag, String msg) {
|
||||
wtf(tag, msg, null);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints a message at ASSERT priority.
|
||||
*
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
public static void wtf(String tag, Throwable tr) {
|
||||
wtf(tag, null, tr);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,109 @@
|
||||
/*
|
||||
* Copyright 2013 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
/*
|
||||
* Copyright 2013 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package com.example.android.common.logger;
|
||||
|
||||
import android.graphics.Typeface;
|
||||
import android.os.Bundle;
|
||||
import android.support.v4.app.Fragment;
|
||||
import android.text.Editable;
|
||||
import android.text.TextWatcher;
|
||||
import android.view.Gravity;
|
||||
import android.view.LayoutInflater;
|
||||
import android.view.View;
|
||||
import android.view.ViewGroup;
|
||||
import android.widget.ScrollView;
|
||||
|
||||
/**
|
||||
* Simple fraggment which contains a LogView and uses is to output log data it receives
|
||||
* through the LogNode interface.
|
||||
*/
|
||||
public class LogFragment extends Fragment {
|
||||
|
||||
private LogView mLogView;
|
||||
private ScrollView mScrollView;
|
||||
|
||||
public LogFragment() {}
|
||||
|
||||
public View inflateViews() {
|
||||
mScrollView = new ScrollView(getActivity());
|
||||
ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
|
||||
ViewGroup.LayoutParams.MATCH_PARENT,
|
||||
ViewGroup.LayoutParams.MATCH_PARENT);
|
||||
mScrollView.setLayoutParams(scrollParams);
|
||||
|
||||
mLogView = new LogView(getActivity());
|
||||
ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
|
||||
logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
|
||||
mLogView.setLayoutParams(logParams);
|
||||
mLogView.setClickable(true);
|
||||
mLogView.setFocusable(true);
|
||||
mLogView.setTypeface(Typeface.MONOSPACE);
|
||||
|
||||
// Want to set padding as 16 dips, setPadding takes pixels. Hooray math!
|
||||
int paddingDips = 16;
|
||||
double scale = getResources().getDisplayMetrics().density;
|
||||
int paddingPixels = (int) ((paddingDips * (scale)) + .5);
|
||||
mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
|
||||
mLogView.setCompoundDrawablePadding(paddingPixels);
|
||||
|
||||
mLogView.setGravity(Gravity.BOTTOM);
|
||||
mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
|
||||
|
||||
mScrollView.addView(mLogView);
|
||||
return mScrollView;
|
||||
}
|
||||
|
||||
@Override
|
||||
public View onCreateView(LayoutInflater inflater, ViewGroup container,
|
||||
Bundle savedInstanceState) {
|
||||
|
||||
View result = inflateViews();
|
||||
|
||||
mLogView.addTextChangedListener(new TextWatcher() {
|
||||
@Override
|
||||
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
|
||||
|
||||
@Override
|
||||
public void onTextChanged(CharSequence s, int start, int before, int count) {}
|
||||
|
||||
@Override
|
||||
public void afterTextChanged(Editable s) {
|
||||
mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
|
||||
}
|
||||
});
|
||||
return result;
|
||||
}
|
||||
|
||||
public LogView getLogView() {
|
||||
return mLogView;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,39 @@
|
||||
/*
|
||||
* Copyright (C) 2012 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
package com.example.android.common.logger;
|
||||
|
||||
/**
|
||||
* Basic interface for a logging system that can output to one or more targets.
|
||||
* Note that in addition to classes that will output these logs in some format,
|
||||
* one can also implement this interface over a filter and insert that in the chain,
|
||||
* such that no targets further down see certain data, or see manipulated forms of the data.
|
||||
* You could, for instance, write a "ToHtmlLoggerNode" that just converted all the log data
|
||||
* it received to HTML and sent it along to the next node in the chain, without printing it
|
||||
* anywhere.
|
||||
*/
|
||||
public interface LogNode {
|
||||
|
||||
/**
|
||||
* Instructs first LogNode in the list to print the log data provided.
|
||||
* @param priority Log level of the data being logged. Verbose, Error, etc.
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged. The actual message to be logged.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
public void println(int priority, String tag, String msg, Throwable tr);
|
||||
|
||||
}
|
||||
@@ -0,0 +1,145 @@
|
||||
/*
|
||||
* Copyright (C) 2013 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
package com.example.android.common.logger;
|
||||
|
||||
import android.app.Activity;
|
||||
import android.content.Context;
|
||||
import android.util.*;
|
||||
import android.widget.TextView;
|
||||
|
||||
/** Simple TextView which is used to output log data received through the LogNode interface.
|
||||
*/
|
||||
public class LogView extends TextView implements LogNode {
|
||||
|
||||
public LogView(Context context) {
|
||||
super(context);
|
||||
}
|
||||
|
||||
public LogView(Context context, AttributeSet attrs) {
|
||||
super(context, attrs);
|
||||
}
|
||||
|
||||
public LogView(Context context, AttributeSet attrs, int defStyle) {
|
||||
super(context, attrs, defStyle);
|
||||
}
|
||||
|
||||
/**
|
||||
* Formats the log data and prints it out to the LogView.
|
||||
* @param priority Log level of the data being logged. Verbose, Error, etc.
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged. The actual message to be logged.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
@Override
|
||||
public void println(int priority, String tag, String msg, Throwable tr) {
|
||||
|
||||
|
||||
String priorityStr = null;
|
||||
|
||||
// For the purposes of this View, we want to print the priority as readable text.
|
||||
switch(priority) {
|
||||
case android.util.Log.VERBOSE:
|
||||
priorityStr = "VERBOSE";
|
||||
break;
|
||||
case android.util.Log.DEBUG:
|
||||
priorityStr = "DEBUG";
|
||||
break;
|
||||
case android.util.Log.INFO:
|
||||
priorityStr = "INFO";
|
||||
break;
|
||||
case android.util.Log.WARN:
|
||||
priorityStr = "WARN";
|
||||
break;
|
||||
case android.util.Log.ERROR:
|
||||
priorityStr = "ERROR";
|
||||
break;
|
||||
case android.util.Log.ASSERT:
|
||||
priorityStr = "ASSERT";
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
// Handily, the Log class has a facility for converting a stack trace into a usable string.
|
||||
String exceptionStr = null;
|
||||
if (tr != null) {
|
||||
exceptionStr = android.util.Log.getStackTraceString(tr);
|
||||
}
|
||||
|
||||
// Take the priority, tag, message, and exception, and concatenate as necessary
|
||||
// into one usable line of text.
|
||||
final StringBuilder outputBuilder = new StringBuilder();
|
||||
|
||||
String delimiter = "\t";
|
||||
appendIfNotNull(outputBuilder, priorityStr, delimiter);
|
||||
appendIfNotNull(outputBuilder, tag, delimiter);
|
||||
appendIfNotNull(outputBuilder, msg, delimiter);
|
||||
appendIfNotNull(outputBuilder, exceptionStr, delimiter);
|
||||
|
||||
// In case this was originally called from an AsyncTask or some other off-UI thread,
|
||||
// make sure the update occurs within the UI thread.
|
||||
((Activity) getContext()).runOnUiThread( (new Thread(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
// Display the text we just generated within the LogView.
|
||||
appendToLog(outputBuilder.toString());
|
||||
}
|
||||
})));
|
||||
|
||||
if (mNext != null) {
|
||||
mNext.println(priority, tag, msg, tr);
|
||||
}
|
||||
}
|
||||
|
||||
public LogNode getNext() {
|
||||
return mNext;
|
||||
}
|
||||
|
||||
public void setNext(LogNode node) {
|
||||
mNext = node;
|
||||
}
|
||||
|
||||
/** Takes a string and adds to it, with a separator, if the bit to be added isn't null. Since
|
||||
* the logger takes so many arguments that might be null, this method helps cut out some of the
|
||||
* agonizing tedium of writing the same 3 lines over and over.
|
||||
* @param source StringBuilder containing the text to append to.
|
||||
* @param addStr The String to append
|
||||
* @param delimiter The String to separate the source and appended strings. A tab or comma,
|
||||
* for instance.
|
||||
* @return The fully concatenated String as a StringBuilder
|
||||
*/
|
||||
private StringBuilder appendIfNotNull(StringBuilder source, String addStr, String delimiter) {
|
||||
if (addStr != null) {
|
||||
if (addStr.length() == 0) {
|
||||
delimiter = "";
|
||||
}
|
||||
|
||||
return source.append(addStr).append(delimiter);
|
||||
}
|
||||
return source;
|
||||
}
|
||||
|
||||
// The next LogNode in the chain.
|
||||
LogNode mNext;
|
||||
|
||||
/** Outputs the string as a new line of log data in the LogView. */
|
||||
public void appendToLog(String s) {
|
||||
append("\n" + s);
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
@@ -0,0 +1,75 @@
|
||||
/*
|
||||
* Copyright (C) 2012 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
package com.example.android.common.logger;
|
||||
|
||||
import android.util.Log;
|
||||
|
||||
/**
|
||||
* Helper class which wraps Android's native Log utility in the Logger interface. This way
|
||||
* normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
|
||||
*/
|
||||
public class LogWrapper implements LogNode {
|
||||
|
||||
// For piping: The next node to receive Log data after this one has done its work.
|
||||
private LogNode mNext;
|
||||
|
||||
/**
|
||||
* Returns the next LogNode in the linked list.
|
||||
*/
|
||||
public LogNode getNext() {
|
||||
return mNext;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the LogNode data will be sent to..
|
||||
*/
|
||||
public void setNext(LogNode node) {
|
||||
mNext = node;
|
||||
}
|
||||
|
||||
/**
|
||||
* Prints data out to the console using Android's native log mechanism.
|
||||
* @param priority Log level of the data being logged. Verbose, Error, etc.
|
||||
* @param tag Tag for for the log data. Can be used to organize log statements.
|
||||
* @param msg The actual message to be logged. The actual message to be logged.
|
||||
* @param tr If an exception was thrown, this can be sent along for the logging facilities
|
||||
* to extract and print useful information.
|
||||
*/
|
||||
@Override
|
||||
public void println(int priority, String tag, String msg, Throwable tr) {
|
||||
// There actually are log methods that don't take a msg parameter. For now,
|
||||
// if that's the case, just convert null to the empty string and move on.
|
||||
String useMsg = msg;
|
||||
if (useMsg == null) {
|
||||
useMsg = "";
|
||||
}
|
||||
|
||||
// If an exeption was provided, convert that exception to a usable string and attach
|
||||
// it to the end of the msg method.
|
||||
if (tr != null) {
|
||||
msg += "\n" + Log.getStackTraceString(tr);
|
||||
}
|
||||
|
||||
// This is functionally identical to Log.x(tag, useMsg);
|
||||
// For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
|
||||
Log.println(priority, tag, useMsg);
|
||||
|
||||
// If this isn't the last node in the chain, move things along.
|
||||
if (mNext != null) {
|
||||
mNext.println(priority, tag, msg, tr);
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,60 @@
|
||||
/*
|
||||
* Copyright (C) 2013 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
package com.example.android.common.logger;
|
||||
|
||||
/**
|
||||
* Simple {@link LogNode} filter, removes everything except the message.
|
||||
* Useful for situations like on-screen log output where you don't want a lot of metadata displayed,
|
||||
* just easy-to-read message updates as they're happening.
|
||||
*/
|
||||
public class MessageOnlyLogFilter implements LogNode {
|
||||
|
||||
LogNode mNext;
|
||||
|
||||
/**
|
||||
* Takes the "next" LogNode as a parameter, to simplify chaining.
|
||||
*
|
||||
* @param next The next LogNode in the pipeline.
|
||||
*/
|
||||
public MessageOnlyLogFilter(LogNode next) {
|
||||
mNext = next;
|
||||
}
|
||||
|
||||
public MessageOnlyLogFilter() {
|
||||
}
|
||||
|
||||
@Override
|
||||
public void println(int priority, String tag, String msg, Throwable tr) {
|
||||
if (mNext != null) {
|
||||
getNext().println(Log.NONE, null, msg, null);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the next LogNode in the chain.
|
||||
*/
|
||||
public LogNode getNext() {
|
||||
return mNext;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the LogNode data will be sent to..
|
||||
*/
|
||||
public void setNext(LogNode node) {
|
||||
mNext = node;
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user