How to get callback from activity back to fragment using interface

Question

I have a fragment where I have a button for selecting an image from the gallery. The gallery is opened successfully, but when I select an image, I do not get the result from the activity. Therefore, I consider using a callback (interface). However, I know how.

Can you advise me something?

interface

public interface CallbackListener {
    void onPhotoTake(String url);
}

in click fragment

@OnClick(R.id.addPhoto) void photo() {
        if (isStoragePermissionGranted()) {
            Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
            context.startActivityForResult(i, RESULT_LOAD_IMAGE);
        }
}

activity

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

• here I would like to send the result back to the fragment using the interface

Answer 1

, :

• onActivityResult()

---

• . .

DataReceivedListener listener;

public void setDataReceivedListener(DataReceivedListener listener) {
    this.listener = listener;
}

public interface DataReceivedListener {
    void onReceived(int requestCode, int resultCode, Intent data)
}

class fragment extends Fragments implements yourActivityClassName.DataReceivedListener {
    @Override
    void onReceived(int requestCode, int resultCode, Intent data) {

    }

    onViewCreated(...) {
        ((yourActivityName) getActivity()).setDataReceivedListener(this);
    }
}

Acity

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (listener != null) {
        listener.onActivityResult(requestCode, resultCode, data);
    }
}