记录自学Android的笔记-自定义一个ActivityCollector类来管理所有活动和自定义BaseActivity作为所有活动的父类

public class ActivityCollector {
public static List<Activity> activities=new ArrayList<>();
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 AppCompatActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActivityCollector.addActivity(this);
}

@Override
protected void onDestroy() {
super.onDestroy();
ActivityCollector.removeActivity(this);
}
}