Android Question [B4XPages] Starting an APP with Intent in Kiosk Mode causes glitches (not in Normale Mode)

private String getProcessName() {
    String foregroundProcess = "";
    ActivityManager activityManager = (ActivityManager) getApplicationContext().getSystemService(ACTIVITY_SERVICE);
    // Process running
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        UsageStatsManager mUsageStatsManager = (UsageStatsManager)getSystemService(USAGE_STATS_SERVICE);
        long time = System.currentTimeMillis();
        // We get usage stats for the last 10 seconds
        List<UsageStats> stats = mUsageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_DAILY, time - 1000*10, time);
        // Sort the stats by the last time used
        if(stats != null) {
            SortedMap<Long,UsageStats> mySortedMap = new TreeMap<Long,UsageStats>();
            for (UsageStats usageStats : stats) {
                mySortedMap.put(usageStats.getLastTimeUsed(),usageStats);
                Log.d("RunningAppProcessInfo","Package name : "+usageStats.getPackageName());
            }

        }
    }
}