CODEWITHSUNDEEP
androidandroid-fragments
MorganSIm
MorganSIm

Reputation: 27

Error:Cannot cast from Fragment to FragmentB

I have try many different way such as change import.android.support.fragment to import.support.v4.app.Fragment; but it still showing the error cannot cast from Fragment to FragmentB can anyone help me out and tell me where is the error 

package interfragmet.sim7n;

import android.app.Activity;
import android.app.FragmentManager;
import android.support.v4.app.Fragment;
import android.os.Bundle;

public class MainActivity extends Activity implements Communication{

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}


@Override
public void respond(String data) {
    FragmentManager manager= getFragmentManager();
    FragmentB f2= (FragmentB) manager.findFragmentById(R.id.fragmentB);
    f2.changeText(data); 
}
}

Upvotes: 1

Views: 375

Answers (1)

NameSpace
NameSpace

Reputation: 10177

If you are using support v4 fragments then.

  1. Your activity should be FragmentActivity
  2. You must use the getSupportFragmentManager
  3. Your Fragment imports must look like this:

Imports:

 import android.support.v4.app.Fragment; 
 import android.support.v4.app.FragmentActivity; 
 import android.support.v4.app.FragmentManager;

Upvotes: 1

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