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

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Answer 1

Any Class that extends Activity in your application must be declared in the manifest, however, that does not appear to be your problem. Technically, this does answer your question though ;)

This line:

Caused by: java.lang.ClassCastException: com.example.practise.ListFragmentDemo cannot be cast to android.app.Fragment

Does "ListFragmentDemo" extend Fragment?