FragmentStatePagerAdapter IllegalStateException: <MyFragment> is not currently in the FragmentManager
- by Ixx
I'm getting this on some cases, when going back to the activity, which uses a FragmentStatePagerAdapter, using back button of the devices. Not always. Not reproducible.
I'm using support package v4, last revision (8).
Already searched with google, no success finding a useful answer.
Looking in the source, it's thrown here: FragmentManager.java
@Override
public void putFragment(Bundle bundle, String key, Fragment fragment) {
if (fragment.mIndex < 0) {
throw new IllegalStateException("Fragment " + fragment
+ " is not currently in the FragmentManager");
}
bundle.putInt(key, fragment.mIndex);
}
But why is the index of fragment < 0 there?
The code instantiating the fragments:
@Override
public Fragment getItem(int position) {
Fragment fragment = null;
switch(position) {
case 0:
fragment = Fragment1.newInstance(param1);
break;
case 1:
fragment = MyFragment2.newInstance(param2, param3);
break;
}
return fragment;
}
@Override
public int getCount() {
return 2;
}
I also can't debug through the source since the support package doesn't let me attach the source, for some reason... but that's a different question...
