Broadcastreceiver for Action_Media_Button Not Working

BroadcastReceiver for ACTION_MEDIA_BUTTON not working

I tested this on a Samsung Galaxy S5 with Android 4.4.2. So what is important and what is not mentioned in other posts:

• Register the receiver in the AndroidManifest.xml inside the application tag but outside from every activity tag.
• Your receiver Broadcastreceiver need to be public and static
• One activity need to register an MediaButtonEventReceiver to listen for the button presses

Okay and here some example code:

mAudioManager =  (AudioManager) getSystemService(Context.AUDIO_SERVICE);
mReceiverComponent = new ComponentName(this,YourBroadcastReceiver.class);
...
mAudioManager.registerMediaButtonEventReceiver(mReceiverComponent);
...
// somewhere else
mAudioManager.unregisterMediaButtonEventReceiver(mReceiverComponent);

Here the receiver:

public static class YourBroadcastReceiver extends BroadcastReceiver{

    // Constructor is mandatory
    public MediaBroadcastReceiver ()
    {
        super ();
    }
    @Override
    public void onReceive(Context context, Intent intent) {
        String intentAction = intent.getAction();
        Log.i (TAG_MEDIA, intentAction.toString() + " happended");
        if (!Intent.ACTION_MEDIA_BUTTON.equals(intentAction)) {
            Log.i (TAG_MEDIA, "no media button information");
            return;
        }
        KeyEvent event = (KeyEvent)intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
        if (event == null) {
            Log.i (TAG_MEDIA, "no keypress");
            return;
        }
        // other stuff you want to do
    }
}

And here the manifest snippet. If needed add priority for the intent-filter, but was not needed for me:

<application>
    <receiver android:name="OuterClass$YourBroadcastReceiver">
        <intent-filter>
           <action android:name="android.intent.action.MEDIA_BUTTON" />
         </intent-filter>
    </receiver>
    <activity> ... </activity>
</application>

For the references:

• http://developer.android.com/training/managing-audio/volume-playback.html
• MediaButtonIntentReceiver not working in Android 4.0+
• BroadcastReceiver: can't instantiate class; no empty constructor

broadcastreceiver onReceive problem ACTION_MEDIA_BUTTON Android

First, you should stop using Toast as your diagnostic test. Use the Log class to log to LogCat, or breakpoints, or something.

Next, you should get rid of your MediaButtonIntentReceiver constructor, as it is not needed.

Then, I would dump the if (!Intent.ACTION_MEDIA_BUTTON.equals(v_IntentAction)) block, since it is also not needed.

Next, I would make sure that your media button actually works. Does it control other applications, like a music player? It may be that your media button is not Android-compliant or something.

Why does ACTION_MEDIA_BUTTON fail to process events?

Do you happen to use Library Project to implement this?

If so, which manifest did you put the <receiver> in? The library's or the application's?

If you put in the library's, it won't work. You must place this in the application's manifest:

<receiver android:name=".RemoteControlReceiver">
    <intent-filter>
        <action android:name="android.intent.action.MEDIA_BUTTON" />
    </intent-filter>
</receiver>

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