public class ActivityCollector {

    public static List<Activity> activities = new ArrayList<Activity>();

    public static void addActivity(Activity activity) {
        activities.add(activity);
    }

    public static void removeActivity(Activity activity) {
        activities.remove(activity);
    }

    public static void finishAll() {
        for (Activity activity : activities) {
            if (!activity.isFinishing()) {
                activity.finish();
            }
        }
    }

}
 

public class BaseActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        ActivityCollector.addActivity(this);
    }

    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        ActivityCollector.removeActivity(this);
    }
 

<span style="font-family: Arial, Helvetica, sans-serif;">}</span>

public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
            case ConstantUtil.LOGINOUT:                
                ActivityCollector.finishAll();
                break;
 

}

}