Updating The Listview In A Fragment From A Dialog In Fragmentactivity(using A Viewpager)

I have a FragmentActivity (main) which creates 3 Fragments and also a menu. Pretty straight forward, and from the examples in the Android SDK. @Override protected void onCreate(Bun

Solution 1:

Your code doesn't work because the line:

mSectionsPagerAdapter.getItem(2)

doesn't return the Fragment at position 2 from the ViewPager, it creates a new Fragment for that position and calling update methods on this Fragment instance will obviously not make any changes as this Fragment isn't attached to your Activity(is not the visible one).

Try to look for that Fragment using the FragmentManager like below and see how it goes:

// ...
Toast.makeText(Main.this, "Maträtt tillagd", Toast.LENGTH_LONG).show();

//FoodListSectionFragment f = (FoodListSectionFragment)Main.this.getSupportFragmentManager().findFragmentByTag("FoodList");//f.updateList();FoodListSectionFragmentfr= getSupportFragmentManager().findFragmentByTag("android:switcher:" + R.id.theIdOfTheViewPager + ":2");
if (fr != null && fr.getView() != null) {
    fr.updateList();
}