CODEWITHSUNDEEP
javaandroidandroid-activity
user2893457
user2893457

Reputation: 1

how to manage multiple activity preferably

public class MyApplication extends Application {
  ArrayList<Activity> mActivityList = new ArrayList<Activity>();

  public void addActivity(Activity a){

     mActivityList.add(a);
   } 

   public void removeActivity(Activity a){
      for(...){
         ...name equals..
         a.finish();
      }

   }

    public void removeAll(){
       for(){
        ...
        a.finish();
        }
   }

    public Activity getActivity(){...};

}

It is a very easy way to manage the activities, but the heap memory of the mActivityList cost much. so is there another way to manage the activities

Upvotes: 0

Views: 52

Answers (1)

Chor Wai Chun
Chor Wai Chun

Reputation: 3236

Tracking activities in a list is definitely not a good way.

If your only intention of doing so is to finish all (or any) of them conveniently, I suggest you take a look into BroadcastReceiver

Here's a snippet you can include into all your activities:

private BroadcastReceiver finishBroadcastReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        finish();
    }
};

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // Start listening to any broadcast "tagged" with action name actionFinish.
    LocalBroadcastManager.getInstance(this).registerReceiver(finishBroadcastReceiver,
            new IntentFilter("actionFinish"));
}

@Override
public void onDestroy() {
    super.onDestroy();
    // Stop listening to broadcast when the activity is destroyed.
    LocalBroadcastManager.getInstance(this).unregisterReceiver(finishBroadcastReceiver);
}

And do this whenever you want to finish all the activities:

LocalBroadcastManager.getInstance(context).sendBroadcast(new Intent("actionFinish"));

Manipulate the Intent object by using Intent.putExtra() to identify which Activity you wish to dispose, if not all.

Upvotes: 1

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