Android: Fragments backStack
android, android-fragments, back-stack
Solution
If you really want to replace the fragment then use replace() methode instead of doing a remove() and an add().
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(..............);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
Don't forget to do the addToBackStack(null) so your previous state will be added to the backstack allowing you to go back with the back button.
See also https://developer.android.com/reference/android/app/FragmentTransaction.html#replace(int, android.app.Fragment, java.lang.String) .
Another good source is http://developer.android.com/guide/components/fragments.html (search for replace() function).
Problem
Im trying to load an new fragment when a method is called. This method creates a new fragment and "replaces" the other fragment: ``` private void showTestFragment(Fragment oldFragment, boolean addBackStack, BaseAdapter adapter, int position) { Cursor cursor = (Cursor)adapter.getItem(position); if(cursor != null){ int idx = cursor.getColumnIndexOrThrow(Episode._ID); long rowId = cursor.getLong(idx); FragmentManager fragmentManager = getFragmentManager(); FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); if(oldFragment != null){ Log.i(TAG, "Removing the old fragment"); fragmentTransaction.remove(oldFragment); } TestFragment testFragment = new TestFragment(); testFragment.setId(rowId); fragmentTransaction.add(android.R.id.content, testFragment); if(addBackStack){ Log.i(TAG, "Added to the backstack"); fragmentTransaction.addToBackStack(TAG); } fragmentTransaction.commit(); Fragment f = getFragmentManager() .findFragmentById(R.id.index); Log.i(TAG, "after commit, frag is "+ f); } } ``` This works fine, until i go back. The last fragment, should be removed when i go back. Before i'm going to implement methods on the activities ``` public void onBackPressed(){} ``` to remove the last fragment, i want to know if i handle the fragment change correctly. It looks like i'm missing something here..