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Best-practice: Update ArrayAdapter continously
private void startListUpdateThread()
{
    Thread ListManageThread = new Thread() {
        LinkItem listItem;
        public void run() {
            Log.d("DL", "List Update - start");
            while(true)
            {
                runOnUiThread(UpdateGUIList);

                try {
                    Thread.sleep(1000); //5Sekunden!
                }
                catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    Log.e("DL", "ERROR: InterruptedException - " + e.getMessage());
                }
            }
        }
    };
    ListManageThread.start();
}

private Runnable UpdateGUIList = new Runnable() {

    @Override
    public void run() {
        mFileAdapter.notifyDataSetChanged();
    }
};

private void startListUpdate()
{
    handler.removeCallbacks(UpdateListUI);
    handler.postDelayed(UpdateListUI, 1000); // 1 second

}

private Runnable UpdateListUI = new Runnable() {
    public void run() {
        //Remove Elements first
        removeDeletedItemsFromList();

        //Update Adapter
        mFileAdapter.notifyDataSetChanged();

        handler.postDelayed(this, 1500); // 1,5 seconds
    }
};

AlarmManager mgr = (AlarmManager) arg0.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(arg0, TestService.class);
PendingIntent pi = PendingIntent.getService(arg0, 0, intent, 0);
mgr.setRepeating(AlarmManager.RTC_WAKEUP, 2000, 2000, pi);