/*
|
* Copyright (C) 2010 ZXing authors
|
*
|
* 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.tejia.lijin.app.util.zxing.android;
|
|
import android.annotation.SuppressLint;
|
import android.app.Activity;
|
import android.content.Context;
|
import android.content.res.AssetFileDescriptor;
|
import android.media.AudioManager;
|
import android.media.MediaPlayer;
|
import android.os.Vibrator;
|
import android.util.Log;
|
|
import com.tejia.lijin.app.R;
|
|
import java.io.Closeable;
|
import java.io.IOException;
|
|
|
/**
|
* 管理声音和震动
|
*/
|
public final class BeepManager implements MediaPlayer.OnCompletionListener,
|
MediaPlayer.OnErrorListener, Closeable {
|
|
private static final String TAG = BeepManager.class.getSimpleName();
|
|
private static final float BEEP_VOLUME = 0.10f;
|
private static final long VIBRATE_DURATION = 200L;
|
|
private final Activity activity;
|
private MediaPlayer mediaPlayer;
|
private boolean playBeep;
|
private boolean vibrate;
|
|
public BeepManager(Activity activity) {
|
this.activity = activity;
|
this.mediaPlayer = null;
|
updatePrefs();
|
}
|
|
|
public void setPlayBeep(boolean playBeep) {
|
this.playBeep = playBeep;
|
}
|
|
|
public void setVibrate(boolean vibrate) {
|
this.vibrate = vibrate;
|
}
|
|
public synchronized void updatePrefs() {
|
|
|
if (playBeep && mediaPlayer == null) {
|
// The volume on STREAM_SYSTEM is not adjustable, and users found it
|
// too loud,
|
// so we now play on the music stream.
|
// 设置activity音量控制键控制的音频流
|
activity.setVolumeControlStream(AudioManager.STREAM_MUSIC);
|
mediaPlayer = buildMediaPlayer(activity);
|
}
|
}
|
|
/**
|
* 开启响铃和震动
|
*/
|
@SuppressLint("MissingPermission")
|
public synchronized void playBeepSoundAndVibrate() {
|
if (playBeep && mediaPlayer != null) {
|
mediaPlayer.start();
|
}
|
if (vibrate) {
|
Vibrator vibrator = (Vibrator) activity
|
.getSystemService(Context.VIBRATOR_SERVICE);
|
vibrator.vibrate(VIBRATE_DURATION);
|
}
|
}
|
|
/**
|
* 创建MediaPlayer
|
*
|
* @param activity
|
* @return
|
*/
|
private MediaPlayer buildMediaPlayer(Context activity) {
|
MediaPlayer mediaPlayer = new MediaPlayer();
|
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
|
// 监听是否播放完成
|
mediaPlayer.setOnCompletionListener(this);
|
mediaPlayer.setOnErrorListener(this);
|
// 配置播放资源
|
try {
|
AssetFileDescriptor file = activity.getResources()
|
.openRawResourceFd(R.raw.beep);
|
try {
|
mediaPlayer.setDataSource(file.getFileDescriptor(),
|
file.getStartOffset(), file.getLength());
|
} finally {
|
file.close();
|
}
|
// 设置音量
|
mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME);
|
mediaPlayer.prepare();
|
return mediaPlayer;
|
} catch (IOException ioe) {
|
Log.w(TAG, ioe);
|
mediaPlayer.release();
|
return null;
|
}
|
}
|
|
@Override
|
public void onCompletion(MediaPlayer mp) {
|
// When the beep has finished playing, rewind to queue up another one.
|
mp.seekTo(0);
|
}
|
|
@Override
|
public synchronized boolean onError(MediaPlayer mp, int what, int extra) {
|
if (what == MediaPlayer.MEDIA_ERROR_SERVER_DIED) {
|
// we are finished, so put up an appropriate error toast if required
|
// and finish
|
activity.finish();
|
} else {
|
// possibly media player error, so release and recreate
|
mp.release();
|
mediaPlayer = null;
|
updatePrefs();
|
}
|
return true;
|
}
|
|
@Override
|
public synchronized void close() {
|
if (mediaPlayer != null) {
|
mediaPlayer.release();
|
mediaPlayer = null;
|
}
|
}
|
|
}
|
