how to send data from one fragment to another fragment in android?

Question

Hello I make a simple tab view using pager and fragment . So I have two tabs in my view .In one tab I have list view in which each row have textview and favourite

Answer 1

Suppose you are sending data from FragmentA to FragmentB, then the best practice is to use Interfaces and then communicate between fragment via the container activity. Below is a small snippet that will provide with the skeleton of what i am trying to say:

Step-1: In your FragmentA define an Interface and override onAttach() method to make it mandatory for your container activity to implement the interface and provide body to its method.

    public interface MyInterfaceListener{
      public void myMethod(yourParameters)//this method will hold parameters which you can then use in your container activity to send it to FragmentB 
}

private MyInterfaceListener listener;
@Override
public void onAttach(Activity activity) {
  super.onAttach(activity);
  if (activity instanceof MyInterfaceListener) {
    listener = (MyInterfaceListener) activity;// This makes sure that the container activity has implemented
    // the callback interface. If not, it throws an exception 
  } else {
    throw new ClassCastException(activity.toString()
        + " must implemenet MyListFragment.OnItemSelectedListener");
  }
}

Now, in your FragmentA you can pass value to myMethod() like: if (listener!=null) { listener.myMethod(yourArguments); }

Step-2: Now, In your container activity implement the callback Interface

public class MyActivity extends Activity implements MyInterfaceListener{
        @Override
         public void myMethod(yourParameters) {
              //do your stuff here. do whatever you want to do with the //parameter list which is nothing but data from FragmentA.
                FragmentB fragment = (FragmentB) getSupportFragmentManager().findFragmentById(R.id.yourFragmentB);
                fragment.methodInFragmentB(sendDataAsArguments);// calling a method in FragmentB and and sending data as arguments. 
        }
}

Step-3: In FragmentB have a method say for example methodInFragmentB(yourParameters)

    public void methodInFragmentB(yourParameters){
      //do whatever you want to do with the data..... 
}

I hope the above description helps. Thanks.