TrtG TrtG - 4 months ago 88
Android Question

DialogFragment with custom ListView

I'm trying to create a DialogFragment that shows a dialog with a custom ListView inside.

public class MultiSelectDialogCustom extends DialogFragment {


ListView mLocationList;
private ArrayList<String> mOfficeListItems = new ArrayList<String>();


public static MultiSelectDialogCustom newInstance(int title) {
MultiSelectDialogCustom dialog = new MultiSelectDialogCustom();
Bundle args = new Bundle();
args.putInt("title", title);
dialog.setArguments(args);
return dialog;
}

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

Collections.addAll(mOfficeListItems, getResources().getStringArray(R.array.offices));
View v = inflater.inflate(R.layout.fragment_choice_list, container,
true);

mLocationList = (ListView)v.findViewById(R.id.location_criteria_list);

final FunctionListArrayAdapter adapter = new FunctionListArrayAdapter(
this, android.R.layout.simple_list_item_1, mOfficeListItems);
mLocationList.setAdapter(adapter);

getDialog().setTitle(getArguments().getInt("title"));

return v;
}


}


When calling it from a fragment :

MultiSelectDialogCustom dialogFrag = MultiSelectDialogCustom_.newInstance(R.string.dialog_title);
dialogFrag.show(getActivity().getSupportFragmentManager(), null);


It only shows a blank dialog with the title... why my isn't my list displayed?

Answer

Instead of using onCreateView you should be overriding onCreateDialog and inside of it, it'll look something like:

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    Collections.addAll(mOfficeListItems, getResources().getStringArray(R.array.offices)); 
    View v = getActivity().getLayoutInflater().inflate(R.layout.fragment_choice_list, null);

    mLocationList = (ListView)v.findViewById(R.id.location_criteria_list);

    final FunctionListArrayAdapter adapter = new FunctionListArrayAdapter(
            this, android.R.layout.simple_list_item_1, mOfficeListItems);
    mLocationList.setAdapter(adapter);

    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

    builder.setTitle(getArguments().getInt("title")).setView(v);

    return builder.create();
}

This quote from the DialogFragment documentation page describes what you're trying to do:

Implementations should override this class and implement onCreateView(LayoutInflater, ViewGroup, Bundle) to supply the content of the dialog. Alternatively, they can override onCreateDialog(Bundle) to create an entirely custom dialog, such as an AlertDialog, with its own content.

In your case, it seems like onCreateDialog is the way to go since you want to do a custom inner view.

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