Prevent my audio app using NuPlayer on Android Lollipop 5.x?

Question

I have an audio app that plays multiple tracks at the same time, each with their own mediaPlayer. Each track is reasonably long, upwards of two minutes.

Answer 1

Update: Setting a partial wake lock on the MediaPlayer resolves this problem:

playerToPrepare.setWakeMode(context, PowerManager.PARTIAL_WAKE_LOCK);

A partial wake lock shouldn't have too big of an impact, and it seems like MediaPlayer itself cleans this up when playback completes.

-- Original Answer ---

So, I finally found a way to safely detect wether or not NuPlayer will be used or not on Lollipop. Seems like the best strategy for now is to inform the user to open Developer Settings and enable AwesomePlayer until Google fixes NuPlayer. Sadly, there's no good way to change this setting for the user, we can just read its value unless you're signed as a system application.

This approach checks Android's system properties values to see if the user have enabled the use of AwesomePlayer or not under Developer Settings. Since Lollipop have NuPlayer on by default, if this value is disabled, we know NuPlayer will be used.

Drop SystemProperties.java into your project for access to read the system properties, do not change its package name from android.os (it calls through to its corresponding JNI methods, so needs to stay the same).

You can now check if the phone is Lollipop/5.0, if AwesomePlayer is enabled, and act accordingly if it's not (e.g. by opening the Developer Settings):

public void openDeveloperSettingsIfAwesomePlayerNotActivated(final Context context) {
    final boolean useAwesome = SystemProperties.getBoolean("persist.sys.media.use-awesome", false);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && !useAwesome) {
        final Intent intent = new Intent(Settings.ACTION_APPLICATION_DEVELOPMENT_SETTINGS);
        context.startActivity(intent);                
    }
}