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title: 2017-3-23 Android习惯——给全部Activity添加集合管理

public void ActivityCollector{    public static List
    
      activities = new ArrayList<>();        public static addActivity(Activity activity){        activities.add(activity);    }        public static removeActivity(Activity activity){        activities.remove(activity);    }        public static finishAll(){        for(Activity activity : activities){            if(!activity.isFinishing()){                activity.finish;            }        }    }}
    

然后在其它活动中的生命周期里添加，比如：

... onCreate(...){        ...        ActivityCollector.addActivity(this);    }        ...onDestroy(...){        ...        ActivityCollector.remove(this);    }

再比如，不管你在哪个 Activity 想退出程序，只要调用 finishAll() 方法即可。