使用回调在DialogFragment中回传数据(安卓)

public interface MyCallback {
    void onDataReceived(String data);
}

private MyCallback callback;

@Override
public void onAttach(Context context) {
    super.onAttach(context);
    try {
        callback = (MyCallback) context;
    } catch (ClassCastException e) {
        throw new ClassCastException(context.toString() + " must implement MyCallback");
    }
}

callback.onDataReceived("Hello, World!");

public class MainActivity extends AppCompatActivity implements MyCallback {
    // ...

    @Override
    public void onDataReceived(String data) {
        // 处理回传的数据
        Log.d("MainActivity", "Received data: " + data);
    }
}