I'm creating a view pager in my app and using a class that extends Fragment on it. When I create an instance I can pass all the elements (an image, text, etc) and store it with the Bundle to use it in the onCreate. But I can't store a listener for the button in the fragment. Here is my class:
public class RegWizardFragmentInfo extends Fragment {
private static final String IMAGE = "image";
private static final String TEXT = "text";
private static final String BUTTON = "buttonText";
private View.OnClickListener buttonCallBack;
private Button button;
private int image;
private int text;
private int buttonText;
public RegWizardFragmentInfo newInstance(int image, int text, int buttonText, View.OnClickListener callback) {
RegWizardFragmentInfo fragment = new RegWizardFragmentInfo();
Bundle bundle = new Bundle();
bundle.putInt(IMAGE, image);
bundle.putInt(BUTTON, buttonText);
bundle.putInt(TEXT, text);
fragment.setArguments(bundle);
fragment.setRetainInstance(true);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.onActivityCreated(savedInstanceState);
this.image = getArguments().getInt(IMAGE);
this.text = (getArguments() != null) ? getArguments().getInt(TEXT)
: -1;
this.buttonText = (getArguments() != null) ? getArguments().getInt(BUTTON)
: -1;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(
R.layout.fragment, container, false);
//Extract all the views and add the image and texts
return rootView;
}
So, how can I store the listener that I get in the newInstance to add it to the button on the onCreateView method?
Thanks for the help.
You can use a callback in your Fragment
:
public class RegWizardFragmentInfo extends Fragment {
private Button button;
private OnClickCallback callback;
public interface OnClickCallback {
void onClick();
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
callback = (OnClickCallback) context;
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
return super.onCreateView(inflater, container, savedInstanceState);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
callback.onClick();
}
});
}
}
and implement this new interface in your parent Activity