Update samples prebuilts for lmp-mr1-ub-docs
Synced to developers/samples/android commit 54bab34b386e343e9d0ea75a5fb8d13db2c71eb5. Change-Id: I1c9d9d2c1f53a051d7b4d85303d5c01ab6f16e68
This commit is contained in:
Trevor Johns
@@ -0,0 +1,190 @@
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package com.example.android.bluetoothadvertisements;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.le.AdvertiseCallback;
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import android.bluetooth.le.AdvertiseData;
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import android.bluetooth.le.AdvertiseSettings;
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import android.bluetooth.le.BluetoothLeAdvertiser;
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import android.os.Bundle;
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import android.support.v4.app.Fragment;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.Switch;
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import android.widget.Toast;
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/**
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* Allows user to start & stop Bluetooth LE Advertising of their device.
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*/
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public class AdvertiserFragment extends Fragment {
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private BluetoothAdapter mBluetoothAdapter;
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private BluetoothLeAdvertiser mBluetoothLeAdvertiser;
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private AdvertiseCallback mAdvertiseCallback;
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private Switch mSwitch;
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/**
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* Must be called after object creation by MainActivity.
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*
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* @param btAdapter the local BluetoothAdapter
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*/
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public void setBluetoothAdapter(BluetoothAdapter btAdapter) {
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this.mBluetoothAdapter = btAdapter;
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mBluetoothLeAdvertiser = mBluetoothAdapter.getBluetoothLeAdvertiser();
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}
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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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setRetainInstance(true);
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}
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container,
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Bundle savedInstanceState) {
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View view = inflater.inflate(R.layout.fragment_advertiser, container, false);
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mSwitch = (Switch) view.findViewById(R.id.advertise_switch);
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mSwitch.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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onSwitchClicked(v);
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}
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});
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return view;
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}
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@Override
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public void onStop() {
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super.onStop();
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if(mAdvertiseCallback != null){
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stopAdvertising();
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}
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}
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/**
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* Called when switch is toggled - starts or stops advertising.
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*
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* @param view is the Switch View object
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*/
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public void onSwitchClicked(View view) {
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// Is the toggle on?
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boolean on = ((Switch) view).isChecked();
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if (on) {
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startAdvertising();
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} else {
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stopAdvertising();
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}
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}
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/**
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* Starts BLE Advertising.
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*/
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private void startAdvertising() {
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mAdvertiseCallback = new SampleAdvertiseCallback();
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if (mBluetoothLeAdvertiser != null) {
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mBluetoothLeAdvertiser.startAdvertising(buildAdvertiseSettings(), buildAdvertiseData(),
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mAdvertiseCallback);
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} else {
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mSwitch.setChecked(false);
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Toast.makeText(getActivity(), getString(R.string.bt_null), Toast.LENGTH_LONG).show();
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}
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}
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/**
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* Stops BLE Advertising.
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*/
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private void stopAdvertising() {
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if (mBluetoothLeAdvertiser != null) {
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mBluetoothLeAdvertiser.stopAdvertising(mAdvertiseCallback);
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mAdvertiseCallback = null;
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} else {
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mSwitch.setChecked(false);
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Toast.makeText(getActivity(), getString(R.string.bt_null), Toast.LENGTH_LONG).show();
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}
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}
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/**
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* Returns an AdvertiseData object which includes the Service UUID and Device Name.
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*/
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private AdvertiseData buildAdvertiseData() {
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// Note: There is a strict limit of 31 Bytes on packets sent over BLE Advertisements.
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// This includes everything put into AdvertiseData including UUIDs, device info, &
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// arbitrary service or manufacturer data.
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// Attempting to send packets over this limit will result in a failure with error code
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// AdvertiseCallback.ADVERTISE_FAILED_DATA_TOO_LARGE. Catch this error in the
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// onStartFailure() method of an AdvertiseCallback implementation.
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AdvertiseData.Builder dataBuilder = new AdvertiseData.Builder();
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dataBuilder.addServiceUuid(Constants.Service_UUID);
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dataBuilder.setIncludeDeviceName(true);
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return dataBuilder.build();
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}
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/**
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* Returns an AdvertiseSettings object set to use low power (to help preserve battery life).
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*/
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private AdvertiseSettings buildAdvertiseSettings() {
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AdvertiseSettings.Builder settingsBuilder = new AdvertiseSettings.Builder();
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settingsBuilder.setAdvertiseMode(AdvertiseSettings.ADVERTISE_MODE_LOW_POWER);
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return settingsBuilder.build();
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}
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/**
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* Custom callback after Advertising succeeds or fails to start.
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*/
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private class SampleAdvertiseCallback extends AdvertiseCallback {
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@Override
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public void onStartFailure(int errorCode) {
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super.onStartFailure(errorCode);
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mSwitch.setChecked(false);
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String errorMessage = getString(R.string.start_error_prefix);
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switch (errorCode) {
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case AdvertiseCallback.ADVERTISE_FAILED_ALREADY_STARTED:
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errorMessage += " " + getString(R.string.start_error_already_started);
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break;
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case AdvertiseCallback.ADVERTISE_FAILED_DATA_TOO_LARGE:
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errorMessage += " " + getString(R.string.start_error_too_large);
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break;
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case AdvertiseCallback.ADVERTISE_FAILED_FEATURE_UNSUPPORTED:
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errorMessage += " " + getString(R.string.start_error_unsupported);
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break;
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case AdvertiseCallback.ADVERTISE_FAILED_INTERNAL_ERROR:
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errorMessage += " " + getString(R.string.start_error_internal);
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break;
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case AdvertiseCallback.ADVERTISE_FAILED_TOO_MANY_ADVERTISERS:
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errorMessage += " " + getString(R.string.start_error_too_many);
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break;
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}
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Toast.makeText(getActivity(), errorMessage, Toast.LENGTH_LONG).show();
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}
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@Override
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public void onStartSuccess(AdvertiseSettings settingsInEffect) {
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super.onStartSuccess(settingsInEffect);
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// Don't need to do anything here, advertising successfully started.
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}
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}
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}
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@@ -0,0 +1,22 @@
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package com.example.android.bluetoothadvertisements;
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import android.os.ParcelUuid;
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/**
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* Constants for use in the Bluetooth Advertisements sample
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*/
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public class Constants {
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/**
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* UUID identified with this app - set as Service UUID for BLE Advertisements.
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*
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* Bluetooth requires a certain format for UUIDs associated with Services.
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* The official specification can be found here:
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* {@link https://www.bluetooth.org/en-us/specification/assigned-numbers/service-discovery}
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*/
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public static final ParcelUuid Service_UUID = ParcelUuid
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.fromString("0000b81d-0000-1000-8000-00805f9b34fb");
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public static final int REQUEST_ENABLE_BT = 1;
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}
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@@ -0,0 +1,130 @@
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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.bluetoothadvertisements;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.BluetoothManager;
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import android.content.Context;
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import android.content.Intent;
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import android.os.Bundle;
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import android.support.v4.app.FragmentActivity;
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import android.support.v4.app.FragmentTransaction;
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import android.widget.TextView;
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import android.widget.Toast;
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/**
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* Setup display fragments and ensure the device supports Bluetooth.
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*/
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public class MainActivity extends FragmentActivity {
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private BluetoothAdapter mBluetoothAdapter;
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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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setTitle(R.string.activity_main_title);
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if (savedInstanceState == null ) {
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mBluetoothAdapter = ((BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE))
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.getAdapter();
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// Is Bluetooth supported on this device?
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if (mBluetoothAdapter != null) {
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// Is Bluetooth turned on?
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if (mBluetoothAdapter.isEnabled()) {
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// Are Bluetooth Advertisements supported on this device?
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if (mBluetoothAdapter.isMultipleAdvertisementSupported()) {
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// Everything is supported and enabled, load the fragments.
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setupFragments();
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} else {
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// Bluetooth Advertisements are not supported.
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showErrorText(R.string.bt_ads_not_supported);
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}
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} else {
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// Prompt user to turn on Bluetooth (logic continues in onActivityResult()).
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Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
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startActivityForResult(enableBtIntent, Constants.REQUEST_ENABLE_BT);
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}
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} else {
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// Bluetooth is not supported.
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showErrorText(R.string.bt_not_supported);
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}
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}
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}
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@Override
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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super.onActivityResult(requestCode, resultCode, data);
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switch (requestCode) {
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case Constants.REQUEST_ENABLE_BT:
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if (resultCode == RESULT_OK) {
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// Bluetooth is now Enabled, are Bluetooth Advertisements supported on
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// this device?
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if (mBluetoothAdapter.isMultipleAdvertisementSupported()) {
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// Everything is supported and enabled, load the fragments.
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setupFragments();
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} else {
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// Bluetooth Advertisements are not supported.
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showErrorText(R.string.bt_ads_not_supported);
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}
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} else {
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// User declined to enable Bluetooth, exit the app.
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Toast.makeText(this, R.string.bt_not_enabled_leaving,
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Toast.LENGTH_SHORT).show();
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finish();
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}
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default:
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super.onActivityResult(requestCode, resultCode, data);
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}
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}
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private void setupFragments() {
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FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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ScannerFragment scannerFragment = new ScannerFragment();
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scannerFragment.setBluetoothAdapter(mBluetoothAdapter);
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transaction.replace(R.id.scanner_fragment_container, scannerFragment);
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AdvertiserFragment advertiserFragment = new AdvertiserFragment();
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advertiserFragment.setBluetoothAdapter(mBluetoothAdapter);
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transaction.replace(R.id.advertiser_fragment_container, advertiserFragment);
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transaction.commit();
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}
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private void showErrorText(int messageId) {
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TextView view = (TextView) findViewById(R.id.error_textview);
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view.setText(getString(messageId));
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}
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}
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@@ -0,0 +1,147 @@
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package com.example.android.bluetoothadvertisements;
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import android.bluetooth.le.ScanResult;
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import android.content.Context;
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import android.os.SystemClock;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.BaseAdapter;
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import android.widget.TextView;
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import java.util.ArrayList;
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import java.util.concurrent.TimeUnit;
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/**
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* Holds and displays {@link ScanResult}s, used by {@link ScannerFragment}.
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*/
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public class ScanResultAdapter extends BaseAdapter {
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private ArrayList<ScanResult> mArrayList;
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private Context mContext;
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private LayoutInflater mInflater;
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ScanResultAdapter(Context context, LayoutInflater inflater) {
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super();
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mContext = context;
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mInflater = inflater;
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mArrayList = new ArrayList<>();
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}
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@Override
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public int getCount() {
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return mArrayList.size();
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}
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@Override
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public Object getItem(int position) {
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return mArrayList.get(position);
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}
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@Override
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public long getItemId(int position) {
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return mArrayList.get(position).getDevice().getAddress().hashCode();
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}
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@Override
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public View getView(int position, View view, ViewGroup parent) {
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// Reuse an old view if we can, otherwise create a new one.
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if (view == null) {
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view = mInflater.inflate(R.layout.listitem_scanresult, null);
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}
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TextView deviceNameView = (TextView) view.findViewById(R.id.device_name);
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TextView deviceAddressView = (TextView) view.findViewById(R.id.device_address);
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TextView lastSeenView = (TextView) view.findViewById(R.id.last_seen);
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ScanResult scanResult = mArrayList.get(position);
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deviceNameView.setText(scanResult.getDevice().getName());
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deviceAddressView.setText(scanResult.getDevice().getAddress());
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lastSeenView.setText(getTimeSinceString(mContext, scanResult.getTimestampNanos()));
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return view;
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}
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/**
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* Search the adapter for an existing device address and return it, otherwise return -1.
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*/
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private int getPosition(String address) {
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int position = -1;
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for (int i = 0; i < mArrayList.size(); i++) {
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if (mArrayList.get(i).getDevice().getAddress().equals(address)) {
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position = i;
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break;
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}
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}
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return position;
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}
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/**
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* Add a ScanResult item to the adapter if a result from that device isn't already present.
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* Otherwise updates the existing position with the new ScanResult.
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*/
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public void add(ScanResult scanResult) {
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int existingPosition = getPosition(scanResult.getDevice().getAddress());
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if (existingPosition >= 0) {
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// Device is already in list, update its record.
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mArrayList.set(existingPosition, scanResult);
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} else {
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// Add new Device's ScanResult to list.
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mArrayList.add(scanResult);
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}
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}
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/**
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* Clear out the adapter.
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*/
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public void clear() {
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mArrayList.clear();
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}
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/**
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* Takes in a number of nanoseconds and returns a human-readable string giving a vague
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* description of how long ago that was.
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*/
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public static String getTimeSinceString(Context context, long timeNanoseconds) {
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String lastSeenText = context.getResources().getString(R.string.last_seen) + " ";
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long timeSince = SystemClock.elapsedRealtimeNanos() - timeNanoseconds;
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long secondsSince = TimeUnit.SECONDS.convert(timeSince, TimeUnit.NANOSECONDS);
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if (secondsSince < 5) {
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lastSeenText += context.getResources().getString(R.string.just_now);
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} else if (secondsSince < 60) {
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lastSeenText += secondsSince + " " + context.getResources()
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.getString(R.string.seconds_ago);
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} else {
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long minutesSince = TimeUnit.MINUTES.convert(secondsSince, TimeUnit.SECONDS);
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if (minutesSince < 60) {
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if (minutesSince == 1) {
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lastSeenText += minutesSince + " " + context.getResources()
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.getString(R.string.minute_ago);
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} else {
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lastSeenText += minutesSince + " " + context.getResources()
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.getString(R.string.minutes_ago);
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}
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} else {
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long hoursSince = TimeUnit.HOURS.convert(minutesSince, TimeUnit.MINUTES);
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if (hoursSince == 1) {
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lastSeenText += hoursSince + " " + context.getResources()
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.getString(R.string.hour_ago);
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} else {
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lastSeenText += hoursSince + " " + context.getResources()
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.getString(R.string.hours_ago);
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}
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}
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}
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return lastSeenText;
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}
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}
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@@ -0,0 +1,212 @@
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package com.example.android.bluetoothadvertisements;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.le.BluetoothLeScanner;
|
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import android.bluetooth.le.ScanCallback;
|
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import android.bluetooth.le.ScanFilter;
|
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import android.bluetooth.le.ScanResult;
|
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import android.bluetooth.le.ScanSettings;
|
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import android.os.Bundle;
|
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import android.os.Handler;
|
||||
import android.support.v4.app.ListFragment;
|
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import android.util.Log;
|
||||
import android.view.LayoutInflater;
|
||||
import android.view.Menu;
|
||||
import android.view.MenuInflater;
|
||||
import android.view.MenuItem;
|
||||
import android.view.View;
|
||||
import android.view.ViewGroup;
|
||||
import android.widget.Toast;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
|
||||
|
||||
/**
|
||||
* Scans for Bluetooth Low Energy Advertisements matching a filter and displays them to the user.
|
||||
*/
|
||||
public class ScannerFragment extends ListFragment {
|
||||
|
||||
private static final String TAG = ScannerFragment.class.getSimpleName();
|
||||
|
||||
/**
|
||||
* Stops scanning after 5 seconds.
|
||||
*/
|
||||
private static final long SCAN_PERIOD = 5000;
|
||||
|
||||
private BluetoothAdapter mBluetoothAdapter;
|
||||
|
||||
private BluetoothLeScanner mBluetoothLeScanner;
|
||||
|
||||
private ScanCallback mScanCallback;
|
||||
|
||||
private ScanResultAdapter mAdapter;
|
||||
|
||||
private Handler mHandler;
|
||||
|
||||
/**
|
||||
* Must be called after object creation by MainActivity.
|
||||
*
|
||||
* @param btAdapter the local BluetoothAdapter
|
||||
*/
|
||||
public void setBluetoothAdapter(BluetoothAdapter btAdapter) {
|
||||
this.mBluetoothAdapter = btAdapter;
|
||||
mBluetoothLeScanner = mBluetoothAdapter.getBluetoothLeScanner();
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onCreate(Bundle savedInstanceState) {
|
||||
super.onCreate(savedInstanceState);
|
||||
setHasOptionsMenu(true);
|
||||
setRetainInstance(true);
|
||||
|
||||
// Use getActivity().getApplicationContext() instead of just getActivity() because this
|
||||
// object lives in a fragment and needs to be kept separate from the Activity lifecycle.
|
||||
//
|
||||
// We could get a LayoutInflater from the ApplicationContext but it messes with the
|
||||
// default theme, so generate it from getActivity() and pass it in separately.
|
||||
mAdapter = new ScanResultAdapter(getActivity().getApplicationContext(),
|
||||
LayoutInflater.from(getActivity()));
|
||||
mHandler = new Handler();
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public View onCreateView(LayoutInflater inflater, ViewGroup container,
|
||||
Bundle savedInstanceState) {
|
||||
|
||||
final View view = super.onCreateView(inflater, container, savedInstanceState);
|
||||
|
||||
setListAdapter(mAdapter);
|
||||
|
||||
return view;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onViewCreated(View view, Bundle savedInstanceState) {
|
||||
super.onViewCreated(view, savedInstanceState);
|
||||
|
||||
getListView().setDivider(null);
|
||||
getListView().setDividerHeight(0);
|
||||
|
||||
setEmptyText(getString(R.string.empty_list));
|
||||
|
||||
// Trigger refresh on app's 1st load
|
||||
startScanning();
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
|
||||
super.onCreateOptionsMenu(menu, inflater);
|
||||
inflater.inflate(R.menu.scanner_menu, menu);
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean onOptionsItemSelected(MenuItem item) {
|
||||
|
||||
switch (item.getItemId()) {
|
||||
case R.id.refresh:
|
||||
startScanning();
|
||||
return true;
|
||||
default:
|
||||
return super.onOptionsItemSelected(item);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Start scanning for BLE Advertisements (& set it up to stop after a set period of time).
|
||||
*/
|
||||
public void startScanning() {
|
||||
if (mScanCallback == null) {
|
||||
Log.d(TAG, "Starting Scanning");
|
||||
|
||||
// Will stop the scanning after a set time.
|
||||
mHandler.postDelayed(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
stopScanning();
|
||||
}
|
||||
}, SCAN_PERIOD);
|
||||
|
||||
// Kick off a new scan.
|
||||
mScanCallback = new SampleScanCallback();
|
||||
mBluetoothLeScanner.startScan(buildScanFilters(), buildScanSettings(), mScanCallback);
|
||||
|
||||
String toastText = getString(R.string.scan_start_toast) + " "
|
||||
+ TimeUnit.SECONDS.convert(SCAN_PERIOD, TimeUnit.MILLISECONDS) + " "
|
||||
+ getString(R.string.seconds);
|
||||
Toast.makeText(getActivity(), toastText, Toast.LENGTH_LONG).show();
|
||||
} else {
|
||||
Toast.makeText(getActivity(), R.string.already_scanning, Toast.LENGTH_SHORT);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Stop scanning for BLE Advertisements.
|
||||
*/
|
||||
public void stopScanning() {
|
||||
Log.d(TAG, "Stopping Scanning");
|
||||
|
||||
// Stop the scan, wipe the callback.
|
||||
mBluetoothLeScanner.stopScan(mScanCallback);
|
||||
mScanCallback = null;
|
||||
|
||||
// Even if no new results, update 'last seen' times.
|
||||
mAdapter.notifyDataSetChanged();
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a List of {@link ScanFilter} objects to filter by Service UUID.
|
||||
*/
|
||||
private List<ScanFilter> buildScanFilters() {
|
||||
List<ScanFilter> scanFilters = new ArrayList<>();
|
||||
|
||||
ScanFilter.Builder builder = new ScanFilter.Builder();
|
||||
builder.setServiceUuid(Constants.Service_UUID);
|
||||
scanFilters.add(builder.build());
|
||||
|
||||
return scanFilters;
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a {@link ScanSettings} object set to use low power (to preserve battery life).
|
||||
*/
|
||||
private ScanSettings buildScanSettings() {
|
||||
ScanSettings.Builder builder = new ScanSettings.Builder();
|
||||
builder.setScanMode(ScanSettings.SCAN_MODE_LOW_POWER);
|
||||
return builder.build();
|
||||
}
|
||||
|
||||
/**
|
||||
* Custom ScanCallback object - adds to adapter on success, displays error on failure.
|
||||
*/
|
||||
private class SampleScanCallback extends ScanCallback {
|
||||
|
||||
@Override
|
||||
public void onBatchScanResults(List<ScanResult> results) {
|
||||
super.onBatchScanResults(results);
|
||||
|
||||
for (ScanResult result : results) {
|
||||
mAdapter.add(result);
|
||||
}
|
||||
mAdapter.notifyDataSetChanged();
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onScanResult(int callbackType, ScanResult result) {
|
||||
super.onScanResult(callbackType, result);
|
||||
|
||||
mAdapter.add(result);
|
||||
mAdapter.notifyDataSetChanged();
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onScanFailed(int errorCode) {
|
||||
super.onScanFailed(errorCode);
|
||||
Toast.makeText(getActivity(), "Scan failed with error: " + errorCode, Toast.LENGTH_LONG)
|
||||
.show();
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user