退出所有应用，监控打开了什么活动

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) {
        super.onCreate(savedInstanceState);
        Log.d("BaseActivity", getClass().getSimpleName());//监控是哪个activity启动
        ActivityCollector.addActivity(this);
    }

    @Override
    protected void onDestroy() {//活动关闭，则从activity中移除该活动

super.onDestroy(); ActivityCollector.removeActivity(this); } }