CODEWITHSUNDEEP
androidandroid-fragmentsback
kingston
kingston

Reputation: 11419

disable back press only when the application would otherwise go to the background in Android

My application should ask the user for a confirmation before putting the application in the background when the user presses the back button.

I tried to override dispatchKeyEvent. The problem is that I also have fragments that are pushed in the backStack.

I should not ask the confirmation when there is still a fragment in the back stack because in that case the application won't go to the background: it will pop up the fragment from the stack.

Is there a way to distinguish between the case when the application will go to the background and when another fragment will be popped up from the stack in dispatchKeyEvent? If not is there another way to do it?

Thanks

Upvotes: 0

Views: 271

Answers (4)

Gan
Gan

Reputation: 1399

You can override the onBackPressed method and get a list of current tasks from the activity manager and then decide weather to ask the user for conformation or just go back. This solutions is discussed here.

Upvotes: 1

ajmal
ajmal

Reputation: 4252

You can override 

public void onBackPressed() {
  super.onBackPressed();
}

and check for your condition like, 

public void onBackPressed() {
  if(foo == true)
    showDialog();
  else
    super.onBackPressed();
}

Upvotes: 0

Rajendra
Rajendra

Reputation: 1698

use this method of Activity

            @Override
        public void onBackPressed() {
            // TODO Auto-generated method stub
                       // Add here  whatever uoy want

        }

Upvotes: 0

njzk2
njzk2

Reputation: 39397

just override onBackPressed.

Also, see http://developer.android.com/guide/components/tasks-and-back-stack.html for better understanding of the notion of backstack in android

Upvotes: 0

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