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FindMyPhone / Application / src / com.example.android.wearable.findphone /

SoundAlarmListenerService.java

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/*
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 * Copyright (C) 2014 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.wearable.findphone;
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import android.media.AudioManager;
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import android.media.MediaPlayer;
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import android.media.RingtoneManager;
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import android.net.Uri;
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import android.util.Log;
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import com.google.android.gms.wearable.DataEvent;
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import com.google.android.gms.wearable.DataEventBuffer;
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import com.google.android.gms.wearable.DataMap;
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import com.google.android.gms.wearable.WearableListenerService;
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import java.io.IOException;
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/**
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 * Listens for disconnection from home device.
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 */
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public class SoundAlarmListenerService extends WearableListenerService {
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    private static final String TAG = "ExampleFindPhoneApp";
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    private static final String FIELD_ALARM_ON = "alarm_on";
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    private AudioManager mAudioManager;
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    private static int mOrigVolume;
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    private int mMaxVolume;
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    private Uri mAlarmSound;
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    private MediaPlayer mMediaPlayer;
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    @Override
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    public void onCreate() {
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        super.onCreate();
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        mAudioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
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        mOrigVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_ALARM);
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        mMaxVolume = mAudioManager.getStreamMaxVolume(AudioManager.STREAM_ALARM);
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        mAlarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
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        mMediaPlayer = new MediaPlayer();
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    }
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    @Override
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    public void onDestroy() {
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        // Reset the alarm volume to the user's original setting.
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        mAudioManager.setStreamVolume(AudioManager.STREAM_ALARM, mOrigVolume, 0);
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        mMediaPlayer.release();
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        super.onDestroy();
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    }
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    @Override
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    public void onDataChanged(DataEventBuffer dataEvents) {
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        if (Log.isLoggable(TAG, Log.DEBUG)) {
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            Log.d(TAG, "onDataChanged: " + dataEvents + " for " + getPackageName());
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        }
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        for (DataEvent event : dataEvents) {
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            if (event.getType() == DataEvent.TYPE_DELETED) {
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                Log.i(TAG, event + " deleted");
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            } else if (event.getType() == DataEvent.TYPE_CHANGED) {
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                Boolean alarmOn =
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                        DataMap.fromByteArray(event.getDataItem().getData()).get(FIELD_ALARM_ON);
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                if (alarmOn) {
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                    mOrigVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_ALARM);
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                    mMediaPlayer.reset();
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                    // Sound alarm at max volume.
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                    mAudioManager.setStreamVolume(AudioManager.STREAM_ALARM, mMaxVolume, 0);
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                    mMediaPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
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                    try {
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                        mMediaPlayer.setDataSource(getApplicationContext(), mAlarmSound);
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                        mMediaPlayer.prepare();
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                    } catch (IOException e) {
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                        Log.e(TAG, "Failed to prepare media player to play alarm.", e);
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                    }
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                    mMediaPlayer.start();
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                } else {
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                    // Reset the alarm volume to the user's original setting.
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                    mAudioManager.setStreamVolume(AudioManager.STREAM_ALARM, mOrigVolume, 0);
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                    if (mMediaPlayer.isPlaying()) {
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                        mMediaPlayer.stop();
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                    }
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                }
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            }
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        }
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    }
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}
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