Check if an app is running in Android

gistfile1.txt

// packageName = "com.example.yourapp"
public Boolean isAppRunning(String packageName) {
        ActivityManager activityManager = (ActivityManager) this.getSystemService(ACTIVITY_SERVICE); // this = context
        List<RunningAppProcessInfo> procInfos = activityManager.getRunningAppProcesses();
        for(int i = 0; i < procInfos.size(); i++) {
                if(procInfos.get(i).processName.equals(packageName)) {
                        // Toast.makeText(getApplicationContext(), "App " + packageName + " is running", Toast.LENGTH_LONG).show();
                        return true;
                }
        }
        return false;
}