Problem inflating custom view for AlertDialog in DialogFragment

Question

I\'m trying to create a DialogFragment using a custom view in an AlertDialog. This view must be inflated from xml. In my DialogFragment

Answer 1

As i needed long time for solving the same problem (Pop up a simple Text Dialog) i decided to share my solution:

The layoutfile connectivity_dialog.xml contains a simple TextView with the message text:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:gravity="center"
              android:layout_gravity="center">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="20dp"
        android:layout_marginEnd="20dp"
        android:layout_marginTop="20dp"
        android:layout_marginBottom="20dp"
        android:text="Connectivity was lost"
        android:textSize="34sp"
        android:gravity="center"
        />
</RelativeLayout>

The Activity showing the "dialog" implements a inner class (as DialogFragment is a Fragment and not a Dialog; further info see https://stackoverflow.com/a/5607560/6355541). The Activity can activate and deactivate the DialogFragment via two functions. If you're using android.support.v4, you may want to change to getSupportFragmentManager():

public static class ConnDialogFragment extends DialogFragment {
    public static ConnDialogFragment newInstance() {
        ConnDialogFragment cdf = new ConnDialogFragment();
        cdf.setRetainInstance(true);
        cdf.setCancelable(false);
        return cdf;
    }
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.connectivity, container, false);
    }
}

private void dismissConn() {
    DialogFragment df = (DialogFragment) getFragmentManager().findFragmentByTag("conn");
    if (df != null) df.dismiss();
}

private void showConn() {
    FragmentTransaction ft = getFragmentManager().beginTransaction();
    Fragment prev = getFragmentManager().findFragmentByTag("conn");
    if (prev != null) ft.remove(prev);
    ft.addToBackStack(null);
    ConnDialogFragment cdf = ConnDialogFragment.newInstance();
    cdf.show(ft, "conn");
}

Answer 2

I haven't inflated from XML but I have done dynamic view generation in a DialogFragment successfully:

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    m_editText = new EditText(getActivity());
    return new AlertDialog.Builder(getActivity())
            .setView(m_editText)
            .setPositiveButton(android.R.string.ok,null)
            .setNegativeButton(android.R.string.cancel, null);
            .create();
}

Answer 3

I had the same problem. In my case it was becasue Android Studio created a template onCreateView that re-inflated a new view instead of returning the view created in onCreateDialog. onCreateView is called after onCreateDialog, so the solution was to simply reurnt the fragments view.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    return this.getView();
}