Finish parent and current activity in Android

Question

I have 3 activities. Activity A which leads to activity B, which in turn can go back to activity A or start activity C. However, if I press back in activity C the app should

Answer 1

You can just override the back key behavior:

Activity A starts activity B
Pressing Back on activity B should lead to A
Activity B starts activity C
Pressing Back on activity C should close the app

Note that I don't call super from onBackPressed. This also allows you to override the browse stack mechanism for Android, which I find to be a big advantage, since currently there doesn't seem to be a way to clear the single oldest item from the browse stack in a simple way.

public class B extends Activity
{
    ...
    @Override
    public void onBackPressed()
    {
        // Start activity A
        Intent aIntent = new Intent(this, A);
        startActivity(bIntent);
    }
    ...
}

public class C extends Activity
{
    ...
    @Override
    public void onBackPressed()
    {
        // Close
        finish();
    }
    ...
}

You can specifically finish the parent activity if needed too, but using this method, you don't have to worry about it.

Answer 2

Create instance of ActivityB.

on ActivityB.java

public static ActivityB instanceOfActivityB;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    instanceOfActivityB = this;
}

on ActivityC.java

void onClose() {
   ActivityB.instanceOfActivityB.finish();
   finish();
}

Hope it helps!

Answer 3

The following code should do it for you. Almost in all other approaches your app will remain in recent apps. Javadoc can be found at, https://developer.android.com/reference/android/app/ActivityManager.AppTask.html#finishAndRemoveTask()

            ActivityManager am = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
            if(am != null) {
                List<ActivityManager.AppTask> tasks = am.getAppTasks();
                if (tasks != null) {
                    tasks.get(0).finishAndRemoveTask();
                }
            }

Answer 4

if you are on Activity A and started another activity called Activity B. Activity A --> Activity B

And now want to close both activities.

then use the below code in Activity B.

B.this.finish();

And use this code in Activity A:

startActivity(new Intent(A.this, B.class));
finish();

As soon as activity B will finish, Activity A will also finish.

There is one drawback, I do not know may be you want this or not.

Drawback is that If user is on Activity B and s/he press back button to move on the Activity A. Then, Activity A will also finish in this case.

Answer 5

This is working perfectly:

btn_back.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v) {

Player.this.finish();
    }
});

Answer 6

None of that worked for me. So I found out a solution. The help clearly lists that Intent.FLAG_ACTIVITY_CLEAR_TASK must be used with Intent.FLAG_ACTIVITY_NEW_TASK. So here is a code that worked for me.

Intent intent=new Intent(ActivityB.this, ActivityC.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);