单击耳机按钮时应用程序崩溃 [英] App crash on headset button click
问题描述
我已经构建了一个部署在 android google Playstore 中的音频播放器.我正在使用 crashlytics 来监控崩溃和 ANR.最近我遇到了很多崩溃的 MediaButtonReceiver.耳机的咔嗒声在许多设备上都能正常工作.但是有些设备会出现这个问题.
I have build an audioplayer which is deployed in android google playstore. I'm using crashlytics to monitor crashes and ANRs. Recently I have been getting a lot of crashes MediaButtonReceiver. The headset clicks work fine in many devices. But some devices are giving this problem.
Crashlytics 报告 -
Crashlytics report -
Fatal Exception: java.lang.RuntimeException: Unable to start receiver android.support.v4.media.session.MediaButtonReceiver: java.lang.IllegalStateException: Could not find any Service that handles android.intent.action.MEDIA_BUTTON or implements a media browser service.
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2866)
at android.app.ActivityThread.access$1700(ActivityThread.java:182)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1551)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5706)
at java.lang.reflect.Method.invoke(Method.java)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1033)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:828)
MediaSession 代码 -
MediaSession code -
private void initMediaSession() throws RemoteException {
if (mediaSessionManager != null) return; //mediaSessionManager exists
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mediaSessionManager = (MediaSessionManager) getSystemService(Context.MEDIA_SESSION_SERVICE);
}
// Create a new MediaSession
mediaSession = new MediaSessionCompat(this, "AudioPlayer");
//Get MediaSessions transport controls
transportControls = mediaSession.getController().getTransportControls();
//set MediaSession -> ready to receive media commands
mediaSession.setActive(true);
//indicate that the MediaSession handles transport control commands
// through its MediaSessionCompat.Callback.
mediaSession.setFlags(MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS|MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS);
//Set mediaSession's MetaData
updateMetaData();
mediaSession.setCallback(new MediaSessionCompat.Callback() {
@Override
public void onPlay() {
super.onPlay();
resumeMedia();
}
@Override
public void onPause() {
super.onPause();
pauseMedia();
}
@Override
public void onSkipToNext() {
super.onSkipToNext();
}
@Override
public void onSkipToPrevious() {
super.onSkipToPrevious();
}
@Override
public boolean onMediaButtonEvent(Intent mediaButtonIntent) {
if (su.getHeadsetEnableSwitch()) {
String intentAction = mediaButtonIntent.getAction();
if (Intent.ACTION_MEDIA_BUTTON.equals(intentAction)) {
KeyEvent event = mediaButtonIntent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
if (event != null) {
int action = event.getAction();
Log.e("Headset key: ", String.valueOf(action));
if (action == KeyEvent.ACTION_DOWN) {
Log.e("Headset: ", "Action down");
headsetClickCount++;
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
if (headsetClickCount == 1) {
if (isPng()) pauseMedia();
else resumeMedia();
headsetClickCount = 0;
} else if (headsetClickCount == 2) {
if (su.getDoubleClickAction() == 0) {
} else if (su.getDoubleClickAction() == 1)
skipToPrevious();
else if (su.getDoubleClickAction() == 2) skipToNext();
headsetClickCount = 0;
} else if (headsetClickCount == 3) {
if (su.getTripleClickAction() == 0) {
} else if (su.getTripleClickAction() == 1)
skipToPrevious();
else if (su.getTripleClickAction() == 2) skipToNext();
headsetClickCount = 0;
}
}
}, 750);
}
if (action == KeyEvent.FLAG_LONG_PRESS) {
if (su.getLongClickAction() == 0) {
} else if (su.getLongClickAction() == 1) skipToPrevious();
else if (su.getLongClickAction() == 2) skipToNext();
}
if (action == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE) {
Log.e("Headset: ", "headset sethook");
if (isPng()) pauseMedia();
else resumeMedia();
}
if (action == KeyEvent.KEYCODE_MEDIA_NEXT) {
skipToNext();
}
if (action == KeyEvent.KEYCODE_MEDIA_PREVIOUS) {
skipToPrevious();
}
if (action == KeyEvent.KEYCODE_MEDIA_PAUSE) {
pauseMedia();
}
if (action == KeyEvent.KEYCODE_MEDIA_PLAY) {
resumeMedia();
}
}
}
return true;
}
return true;
}
});
}
可能是什么问题以及如何解决这个问题?
What could be the problem and how to solve this?
我的想法 - 可能是因为用户在我的应用仍在播放时打开了其他具有此功能的音乐应用.
My thoughts - Maybe this happens because user opens other music apps that has this feature while my app is still playing.
推荐答案
你必须创建你自己的媒体按钮接收器类，比如 MyMediaButtonReceiver.java，它扩展了 MediaButtonReceiver，它将为空，除了您必须覆盖的 onReceive 方法，在捕获 super.onReceive(...)>IllegalStateException:
You have to create your own media button receiver class, say MyMediaButtonReceiver.java, that extends MediaButtonReceiver, and it will be empty except for the onReceive method that you have to override, calling super.onReceive(...) between a try-catch that captures the IllegalStateException:
public class MyMediaButtonReceiver extends MediaButtonReceiver {
@Override
public void onReceive(Context context, Intent intent) {
try {
super.onReceive(context, intent);
} catch (IllegalStateException e) {
Log.d(this.getClass().getName(), e.getMessage());
}
}
}
然后你必须在你的 Manifest 中声明那个接收器类(或者替换你之前的 MediaButtonReceiver 类声明，如果你有的话)，比如:
Then you have to declare that receiver class in your Manifest (or replace your previous MediaButtonReceiver class declaration, if you had one), like:
<receiver android:name=".MyMediaButtonReceiver" >
<intent-filter>
<action android:name="android.intent.action.MEDIA_BUTTON" />
</intent-filter>
</receiver>
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