Using FragmentTransaction with a DialogFragment
Display a DialogFragment with commitAllowingStateLoss()
The DialogFragment.show(FragmentManager manager, String tag) doesn’t have an option to show the dialog while allowing state-loss. It’s a bit strange and inconsistent, because there is a DialogFragment.dismissAllowingStateLoss().
But you can always commit the DialogFragment transaction manually, or create a helper method like this:
public static void showDialogAllowingStateLoss(FragmentManager fragmentManager, DialogFragment dialogFragment, String tag) {
FragmentTransaction ft = fragmentManager.beginTransaction();
ft.add(dialogFragment, tag);
ft.commitAllowingStateLoss();
}
alexanderblom is right that DialogFragment
acts as a Dialog, however it can be made to act as a Fragment with setShowsDialog(false);
In the end the following worked for me:
File: res/layout/wifidirect_dialog_wifidirect:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/dialog_wifidirect_layout">
<LinearLayout
android:id="@+id/frag_container"
android:layout_width="match_parent"
android:layout_height="250dp"
android:orientation="vertical" >
<!-- This is replaced during runtime -->
<RelativeLayout
android:id="@+id/frag_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="top" >
</RelativeLayout>
</LinearLayout>
<!-- The Cancel Button -->
<View
android:layout_width="fill_parent"
android:layout_height="1dp"
android:layout_marginBottom="0dp"
android:background="?android:attr/dividerVertical" />
<Button
android:id="@+id/dialog_wifidirect_cancel"
style="?android:attr/buttonBarButtonStyle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/cancel"/>
</LinearLayout>
File src/.../WifiDirectDialog.java:
public class WiFiDirectDialog extends DialogFragment {
public static final String TAG = "WifiDirectDialog";
public static final String DEVICE_LIST_FRAGMENT_TAG = "WIFIDIRECT_DEVICE_LIST_FRAGMENT";
public static WiFiDirectDialog newInstance(){
WiFiDirectDialog wDialog = new WiFiDirectDialog();
//We want this Dialog to be a Fragment in fact,
//otherwise there are problems with showing another fragment, the DeviceListFragment
wDialog.setShowsDialog(false);
//wDialog.setStyle(SherlockDialogFragment.STYLE_NORMAL,android.R.style.Theme_Holo_Light_Dialog);
//We don't want to recreate the instance every time user rotates the phone
wDialog.setRetainInstance(true);
//Don't close the dialog when touched outside
wDialog.setCancelable(false);
return wDialog;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Log.v(TAG,"onCreateView");
View view = inflater.inflate(R.layout.wifidirect_dialog_wifidirect,container, false);
//Log.v(TAG,"FragmentTransaction started");
ListFragment listFragment = new YourListFragment();
FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
transaction.addToBackStack(DEVICE_LIST_FRAGMENT_TAG)
.replace(R.id.frag_list,deviceListFragment,DEVICE_LIST_FRAGMENT_TAG)
.commit();
//Log.v(TAG,"FragmentTransaction finished");
return view;
};
@Override
public void onActivityCreated(Bundle savedInstanceState){
Log.v(TAG,"onActivityCreated");
super.onActivityCreated(savedInstanceState);
Dialog dialog = getDialog();
dialog.setTitle(R.string.wifidirect_dialog_title);
// Set button listeners etc...///
Button cancelButton = (Button) view.findViewById(R.id.dialog_wifidirect_cancel);
cancelButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
dismiss();
}
});
}
When a DialogFragment
is shown as a Dialog
it is not actually a real Fragment
in a container view. It is a container-less Fragment
which is basically a wrapper of a Dialog
.
So no, you can not show a Fragment
inside a FragmentDialog
. If you really want to do this I think the best way would to create a new Activity
styled as a Dialog
which you can then add Fragments
too.
there actualy is a container as you can see in the onCreateView method. You use the container to create your view.
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle icicle) {
Log.d(TAG, "onCreateView");
View v = inflater
.inflate(R.layout.move_folder_dialog, container, false);
It seems like the FragmentManager is not able to get the container.
Could this be a bug?