Check app process priority.

getProcessInfo.java

private static Map<Integer, String> importance = new HashMap<Integer, String>();
private static Map<Integer, String> reason = new HashMap<Integer, String>();

static {
    importance.put(ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND, "IMPORTANCE_FOREGROUND");
    importance.put(ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE, "IMPORTANCE_PERCEPTIBLE");
    importance.put(ActivityManager.RunningAppProcessInfo.IMPORTANCE_VISIBLE, "IMPORTANCE_VISIBLE");
    importance.put(ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE, "IMPORTANCE_SERVICE");
    importance.put(ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND_SERVICE, "IMPORTANCE_FOREGROUND_SERVICE");
    importance.put(ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND, "IMPORTANCE_BACKGROUND");
    importance.put(ActivityManager.RunningAppProcessInfo.IMPORTANCE_EMPTY, "IMPORTANCE_EMPTY");
    reason.put(ActivityManager.RunningAppProcessInfo.REASON_PROVIDER_IN_USE, "REASON_PROVIDER_IN_USE");
    reason.put(ActivityManager.RunningAppProcessInfo.REASON_SERVICE_IN_USE, "REASON_SERVICE_IN_USE");
    reason.put(ActivityManager.RunningAppProcessInfo.REASON_UNKNOWN, "UNKNOWN");
}

private void getProcessInfo() {
    new Timer().schedule(new TimerTask() {
        @Override
        public void run() {
            ActivityManager manager = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);

            final List<ActivityManager.RunningAppProcessInfo> apps = manager.getRunningAppProcesses();
            for (ActivityManager.RunningAppProcessInfo rapi : apps) {
                if (rapi.processName.contains(getPackageName())) {

                    Log.d("RunningAppProcessInfo", "processName: " + rapi.processName);
                    Log.d("RunningAppProcessInfo", "importance: " + importance.get(rapi.importance));
                    Log.d("RunningAppProcessInfo", "importanceResonCode: " + rapi.importanceReasonCode);

                    break;
                }
            }
        }
    }, 0, 3000);
}