0af1e772c4
- AppShortcuts - CommitContentSampleApp - CommitContentSampleIME Change-Id: I3cefc134839f944b1c0c5efc943fb779c7e7ee70
287 lines
11 KiB
Java
287 lines
11 KiB
Java
/*
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* Copyright (C) 2016 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.commitcontent.ime;
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import android.app.AppOpsManager;
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import android.content.ClipDescription;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.inputmethodservice.InputMethodService;
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import android.net.Uri;
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import android.os.Build;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.support.annotation.RawRes;
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import android.support.v13.view.inputmethod.EditorInfoCompat;
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import android.support.v13.view.inputmethod.InputConnectionCompat;
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import android.support.v13.view.inputmethod.InputContentInfoCompat;
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import android.support.v4.content.FileProvider;
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import android.util.Log;
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import android.view.View;
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import android.view.inputmethod.EditorInfo;
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import android.view.inputmethod.InputBinding;
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import android.view.inputmethod.InputConnection;
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import android.widget.Button;
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import android.widget.LinearLayout;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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public class ImageKeyboard extends InputMethodService {
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private static final String TAG = "ImageKeyboard";
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private static final String AUTHORITY = "com.example.android.supportv13.sampleime.inputcontent";
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private static final String MIME_TYPE_GIF = "image/gif";
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private static final String MIME_TYPE_PNG = "image/png";
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private static final String MIME_TYPE_WEBP = "image/webp";
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private File mPngFile;
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private File mGifFile;
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private File mWebpFile;
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private Button mGifButton;
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private Button mPngButton;
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private Button mWebpButton;
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private boolean isCommitContentSupported(
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@Nullable EditorInfo editorInfo, @NonNull String mimeType) {
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if (editorInfo == null) {
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return false;
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}
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final InputConnection ic = getCurrentInputConnection();
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if (ic == null) {
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return false;
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}
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if (!validatePackageName(editorInfo)) {
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return false;
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}
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final String[] supportedMimeTypes = EditorInfoCompat.getContentMimeTypes(editorInfo);
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for (String supportedMimeType : supportedMimeTypes) {
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if (ClipDescription.compareMimeTypes(mimeType, supportedMimeType)) {
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return true;
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}
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}
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return false;
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}
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private void doCommitContent(@NonNull String description, @NonNull String mimeType,
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@NonNull File file) {
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final EditorInfo editorInfo = getCurrentInputEditorInfo();
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// Validate packageName again just in case.
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if (!validatePackageName(editorInfo)) {
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return;
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}
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final Uri contentUri = FileProvider.getUriForFile(this, AUTHORITY, file);
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// As you as an IME author are most likely to have to implement your own content provider
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// to support CommitContent API, it is important to have a clear spec about what
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// applications are going to be allowed to access the content that your are going to share.
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final int flag;
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if (Build.VERSION.SDK_INT >= 25) {
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// On API 25 and later devices, as an analogy of Intent.FLAG_GRANT_READ_URI_PERMISSION,
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// you can specify InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION to give
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// a temporary read access to the recipient application without exporting your content
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// provider.
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flag = InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION;
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} else {
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// On API 24 and prior devices, we cannot rely on
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// InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION. You as an IME author
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// need to decide what access control is needed (or not needed) for content URIs that
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// you are going to expose. This sample uses Context.grantUriPermission(), but you can
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// implement your own mechanism that satisfies your own requirements.
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flag = 0;
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try {
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// TODO: Use revokeUriPermission to revoke as needed.
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grantUriPermission(
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editorInfo.packageName, contentUri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
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} catch (Exception e){
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Log.e(TAG, "grantUriPermission failed packageName=" + editorInfo.packageName
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+ " contentUri=" + contentUri, e);
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}
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}
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final InputContentInfoCompat inputContentInfoCompat = new InputContentInfoCompat(
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contentUri,
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new ClipDescription(description, new String[]{mimeType}),
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null /* linkUrl */);
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InputConnectionCompat.commitContent(
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getCurrentInputConnection(), getCurrentInputEditorInfo(), inputContentInfoCompat,
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flag, null);
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}
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private boolean validatePackageName(@Nullable EditorInfo editorInfo) {
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if (editorInfo == null) {
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return false;
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}
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final String packageName = editorInfo.packageName;
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if (packageName == null) {
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return false;
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}
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// In Android L MR-1 and prior devices, EditorInfo.packageName is not a reliable identifier
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// of the target application because:
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// 1. the system does not verify it [1]
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// 2. InputMethodManager.startInputInner() had filled EditorInfo.packageName with
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// view.getContext().getPackageName() [2]
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// [1]: https://android.googlesource.com/platform/frameworks/base/+/a0f3ad1b5aabe04d9eb1df8bad34124b826ab641
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// [2]: https://android.googlesource.com/platform/frameworks/base/+/02df328f0cd12f2af87ca96ecf5819c8a3470dc8
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
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return true;
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}
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final InputBinding inputBinding = getCurrentInputBinding();
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if (inputBinding == null) {
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// Due to b.android.com/225029, it is possible that getCurrentInputBinding() returns
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// null even after onStartInputView() is called.
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// TODO: Come up with a way to work around this bug....
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Log.e(TAG, "inputBinding should not be null here. "
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+ "You are likely to be hitting b.android.com/225029");
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return false;
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}
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final int packageUid = inputBinding.getUid();
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
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final AppOpsManager appOpsManager =
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(AppOpsManager) getSystemService(Context.APP_OPS_SERVICE);
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try {
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appOpsManager.checkPackage(packageUid, packageName);
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} catch (Exception e) {
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return false;
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}
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return true;
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}
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final PackageManager packageManager = getPackageManager();
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final String possiblePackageNames[] = packageManager.getPackagesForUid(packageUid);
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for (final String possiblePackageName : possiblePackageNames) {
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if (packageName.equals(possiblePackageName)) {
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return true;
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}
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}
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return false;
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}
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@Override
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public void onCreate() {
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super.onCreate();
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// TODO: Avoid file I/O in the main thread.
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final File imagesDir = new File(getFilesDir(), "images");
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imagesDir.mkdirs();
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mGifFile = getFileForResource(this, R.raw.animated_gif, imagesDir, "image.gif");
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mPngFile = getFileForResource(this, R.raw.dessert_android, imagesDir, "image.png");
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mWebpFile = getFileForResource(this, R.raw.animated_webp, imagesDir, "image.webp");
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}
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@Override
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public View onCreateInputView() {
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mGifButton = new Button(this);
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mGifButton.setText("Insert GIF");
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mGifButton.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View view) {
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ImageKeyboard.this.doCommitContent("A waving flag", MIME_TYPE_GIF, mGifFile);
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}
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});
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mPngButton = new Button(this);
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mPngButton.setText("Insert PNG");
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mPngButton.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View view) {
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ImageKeyboard.this.doCommitContent("A droid logo", MIME_TYPE_PNG, mPngFile);
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}
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});
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mWebpButton = new Button(this);
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mWebpButton.setText("Insert WebP");
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mWebpButton.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View view) {
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ImageKeyboard.this.doCommitContent(
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"Android N recovery animation", MIME_TYPE_WEBP, mWebpFile);
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}
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});
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final LinearLayout layout = new LinearLayout(this);
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layout.setOrientation(LinearLayout.VERTICAL);
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layout.addView(mGifButton);
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layout.addView(mPngButton);
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layout.addView(mWebpButton);
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return layout;
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}
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@Override
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public boolean onEvaluateFullscreenMode() {
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// In full-screen mode the inserted content is likely to be hidden by the IME. Hence in this
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// sample we simply disable full-screen mode.
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return false;
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}
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@Override
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public void onStartInputView(EditorInfo info, boolean restarting) {
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mGifButton.setEnabled(mGifFile != null && isCommitContentSupported(info, MIME_TYPE_GIF));
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mPngButton.setEnabled(mPngFile != null && isCommitContentSupported(info, MIME_TYPE_PNG));
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mWebpButton.setEnabled(mWebpFile != null && isCommitContentSupported(info, MIME_TYPE_WEBP));
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}
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private static File getFileForResource(
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@NonNull Context context, @RawRes int res, @NonNull File outputDir,
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@NonNull String filename) {
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final File outputFile = new File(outputDir, filename);
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final byte[] buffer = new byte[4096];
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InputStream resourceReader = null;
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try {
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try {
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resourceReader = context.getResources().openRawResource(res);
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OutputStream dataWriter = null;
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try {
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dataWriter = new FileOutputStream(outputFile);
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while (true) {
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final int numRead = resourceReader.read(buffer);
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if (numRead <= 0) {
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break;
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}
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dataWriter.write(buffer, 0, numRead);
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}
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return outputFile;
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} finally {
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if (dataWriter != null) {
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dataWriter.flush();
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dataWriter.close();
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}
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}
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} finally {
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if (resourceReader != null) {
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resourceReader.close();
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}
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}
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} catch (IOException e) {
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return null;
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}
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}
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}
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