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USB充电提示音代码实现


实现背景:

有的客户需要在插入充电的时候需要提示音,于是实现了该功能。

实现方法:

代码实现的路径如下:

frameworks/base/services/usb/java/com/android/server/usb/UsbDeviceManager.java

导入 包名
import android.media.AudioManager;

import android.media.MediaPlayer;

定义资源位置
private static final String BATTERY_CHANGE = "/system/media/audio/ui/usb_effect.ogg";

private static final String POWER_DISCONNECTED = "/system/media/audio/ui/power_disconnected.ogg";

注册广播:
IntentFilter filter = new IntentFilter();

filter.addAction(Intent.ACTION_POWER_CONNECTED);

filter.addAction(Intent.ACTION_POWER_DISCONNECTED);

mContext.registerReceiver(mPowerConnectedReceiver, filter);

实现播放:
private final BroadcastReceiver mPowerConnectedReceiver = new BroadcastReceiver() {

@Override

public void onReceive(Context context, Intent intent) {

// TODO Auto-generated method stub

boolean enabled = Settings.Global.getInt(mContext.getContentResolver(),

Settings.Global.CHARGING_SOUNDS_ENABLED, 1) != 0;

if (enabled) {

String action = intent.getAction();
}
if (action.equals(Intent.ACTION_POWER_CONNECTED)) {

playSound(BATTERY_CHANGE);
} else if (action.equals(Intent.ACTION_POWER_DISCONNECTED)) {
playSound(POWER_DISCONNECTED);
}

}

};

private void playSound(final String pathSound) {

if (!mBootCompleted) {

return;
}

new Thread() {

public void run() {

MediaPlayer mp = new MediaPlayer();

try {

mp.setDataSource(pathSound);

mp.setAudioStreamType(AudioManager.STREAM_SYSTEM);

mp.prepare();

mp.start();

Thread.sleep(mp.getDuration());

mp.release();

} catch (Exception e) {

if (mp != null) {

mp.release();

}

}
}

}.start();

}

 

 

 

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