Send data from activity to fragment in Android

From Activity you send data with intent as:

Bundle bundle = new Bundle();
bundle.putString("edttext", "From Activity");
// set Fragmentclass Arguments
Fragmentclass fragobj = new Fragmentclass();
fragobj.setArguments(bundle);

and in Fragment onCreateView method:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    String strtext = getArguments().getString("edttext");    
    return inflater.inflate(R.layout.fragment, container, false);
}

I´ve found a lot of answers here @ stackoverflow.com but definitely this is the correct answer of:

"Sending data from activity to fragment in android".

Activity:

        Bundle bundle = new Bundle();
        String myMessage = "Stackoverflow is cool!";
        bundle.putString("message", myMessage );
        FragmentClass fragInfo = new FragmentClass();
        fragInfo.setArguments(bundle);
        transaction.replace(R.id.fragment_single, fragInfo);
        transaction.commit();

Fragment:

Reading the value in the fragment

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        Bundle bundle = this.getArguments();
        String myValue = bundle.getString("message");
        ...
        ...
        ...
        }

or just

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        String myValue = this.getArguments().getString("message");
        ...
        ...
        ...
        }

This answer may be too late. but it will be useful for future readers.

I have some criteria. I have coded for pick the file from intent. and selected file to be passed to particular fragment for further process. i have many fragments having the functionality of File picking. at the time , every time checking the condition and get the fragment and pass the value is quite disgusting. so , i have decided to pass the value using interface.

Step 1: Create the interface on Main Activity.

   public interface SelectedBundle {
    void onBundleSelect(Bundle bundle);
   }

Step 2: Create the SelectedBundle reference on the Same Activity

   SelectedBundle selectedBundle;

Step 3: create the Method in the Same Activity

   public void setOnBundleSelected(SelectedBundle selectedBundle) {
       this.selectedBundle = selectedBundle;
   }

Step 4: Need to initialise the SelectedBundle reference which are all fragment need filepicker functionality.You place this code on your fragment onCreateView(..) method

    ((MainActivity)getActivity()).setOnBundleSelected(new MainActivity.SelectedBundle() {
          @Override
         public void onBundleSelect(Bundle bundle) {
            updateList(bundle);
        }
     });

Step 5: My case, i need to pass the image Uri from HomeActivity to fragment. So, i used this functionality on onActivityResult method.

onActivityResult from the MainActivity, pass the values to the fragments using interface.

Note: Your case may be different. you can call it from any where from your HomeActivity.

 @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent  data) {
       selectedBundle.onBundleSelect(bundle);
  }

Thats all. Implement every fragment you needed on the FragmentClass. You are great. you have done. WOW...

Also You can access activity data from fragment:

Activity:

public class MyActivity extends Activity {

    private String myString = "hello";

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

    public String getMyData() {
        return myString;
    }
}

Fragment:

public class MyFragment extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        MyActivity activity = (MyActivity) getActivity();
        String myDataFromActivity = activity.getMyData();
        return view;
    }
}