DebugApplication.java

public class DebugApplication extends Application {

    private static final String TAG = DebugApplication.class.getSimpleName();
    
    private static ActivityLifecycleCallbacks activityCallbacks = new ActivityLifecycleCallbacks() {

        @Override
        public void onActivityCreated(Activity activity, Bundle bundle) { /* Don't care */ }

        @Override
        public void onActivityStarted(Activity activity) { /* Don't care */ }

        @Override
        public void onActivityResumed(Activity activity) {
            PowerManager pm = (PowerManager) activity.getSystemService(POWER_SERVICE);
            if (!pm.isScreenOn()) {
                PowerManager.WakeLock wl = pm.newWakeLock(
                        PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, TAG);
                Log.d(TAG, "Wakey wakey [" + activity.getClass().getSimpleName() + "]");
                wl.acquire();
                wl.release();
            }
        }

        @Override
        public void onActivityPaused(Activity activity) { /* Don't care */ }

        @Override
        public void onActivityStopped(Activity activity) { /* Don't care */ }

        @Override
        public void onActivitySaveInstanceState(Activity activity, Bundle bundle) { /* Don't care */ }

        @Override
        public void onActivityDestroyed(Activity activity) { /* Don't care */ }
    };

    @Override
    public void onCreate() {
        super.onCreate();
        this.registerActivityLifecycleCallbacks(activityCallbacks);
    }

}