Should i declare the MainFragmentDemoActivity in manifest?

Question

I am trying to learn fragment.I am clicking a fragment class and my app crashes.I have declared it in the manifest..But why it is happening..My Menu class

public         


        

Answer 1

Your ListFragmentDemo extends from android.support.v4.app.Fragment (the support version of the Fragment class) and not android.app.Fragment (the version which is inside Android)

Change

import android.support.v4.app.Fragment;

to

import android.app.Fragment;

in the ListFragmentDemo class