Add button on tabbed activity

Question

Hi.

I have tabbed activity, i have 10 fragment in my project and i added "Add Button" button to fragment 1.When i clicked this button, new button has created in linear layout.İts ok, but i have a problem after this.for example, if i go to different tab, my button will be erased.Why this is happening? How can i solve this problem?

Thanks :)

My "Add Button" code ;

public void AddButton(View page){    
       LinearLayout Lay = (LinearLayout) findViewById(R.id.mylayout);    
       Button but = new Button(getApplicationContext());
       but.setText("" + myVec2.size());
       myVec2.add(but);
       mylayout.addView(but);      
   }

score 0 · Answer 1 · answered Mar 13 '17 at 11:49

0

You need a list with buttons on your Fragment and on your onCreateView if that list isn't empty to recreate those buttons.

answered Mar 13 '17 at 11:49

gmetax

3,853
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score 0 · Answer 2 · answered Mar 13 '17 at 11:49

0

you need to save the buttons onPause() and recreating in onResume()

answered Mar 13 '17 at 11:49

Mohamed chiheb Ben jemaa

516
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how can i use onPause or onResume ? – metomero Mar 13 '17 at 11:55
look at this answer http://stackoverflow.com/questions/15313598/once-for-all-how-to-correctly-save-instance-state-of-fragments-in-back-stack – Mohamed chiheb Ben jemaa Mar 13 '17 at 11:59

score 0 · Answer 3 · answered Mar 14 '17 at 08:52

Save the number of buttons in a variable and put it in OnSaveInstanceState.
Restore it in onCreateView in numButtons variable.
If the variable is > 0, add the buttons in your view.

In your button OnClick, do numButton ++ whenever add button is pressed.

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState)

        if (savedInstanceState != null) {
           numButtons = savedInstanceState.getInt(Statics.NUMBER_BUTTONS);
        } else {
           numButtons = 0;
        }

       if (numButtons > 0)
          for (int i = 0; i < numButtons; i++) {
       / ** Your Add Button Code ** /
       }
   }

   @Override
   public void onSaveInstanceState(Bundle outState) {
       outState.putInt(Statics.NUMBER_BUTTONS, numButtons);
       super.onSaveInstanceState(outState);
   }

Add button on tabbed activity

3 Answers3