Previous fragment visible below new fragment

Question

I have a TabLayout with a ViewPager. The ViewPager have four fragments F1, F2, F3 and F4. F1 contains a FrameLayout which can have 2 fragments F11 and F12. Initially I add F

Answer 1

I have faced the same problem. But I also could not find a proper solution for this. In my scenario when I open multiple apps and them come back to my app it causes the same issue with Fragments that happen on your side. But I made my app stable. I have done this by the following solution:

1. When your app remove from memory then again open the app then onCreate() method called of your MainActivity in which you are showing Fragments.

2. Here I checked the backstackEntrycount and if it is greater then 0, then remove all fragments and show the base fragment.

   // Clear all fragments and show base fragment, So it will not create
   // issue after opening
   // multiple apps
   FrameLayout flSliding = (FrameLayout) findViewById(R.id.fl_sliding);
   flSliding.post(new Runnable() {
   
       @Override
       public void run() {
           FragmentManager fragmentManager = getSupportFragmentManager();
           Log.i("NavigationDrawerActivity",
                   "onCreate " + fragmentManager.getBackStackEntryCount());
           if (fragmentManager.getBackStackEntryCount() > 0) {
               removeFragment(fragmentManager.getBackStackEntryCount());
           }
           Log.i("NavigationDrawerActivity",
                   "onCreate " + fragmentManager.getBackStackEntryCount());
       }
   });
   

Hope it will help!