LeanbackSettingsFragment


abstract class LeanbackSettingsFragment : Fragment, PreferenceFragment.OnPreferenceStartFragmentCallback, PreferenceFragment.OnPreferenceStartScreenCallback, PreferenceFragment.OnPreferenceDisplayDialogCallback


This fragment provides a container for displaying a LeanbackPreferenceFragment

The following sample code shows a simple leanback preference fragment that is populated from a resource. The resource it loads is:

<PreferenceScreen
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto">

    <PreferenceCategory
            android:title="@string/basic_preferences">

        <Preference
                android:key="preference"
                android:title="@string/title_basic_preference"
                android:summary="@string/summary_basic_preference"/>

        <Preference
                android:key="stylized"
                android:title="@string/title_stylish_preference"
                android:summary="@string/summary_stylish_preference"/>

        <Preference
                android:key="icon"
                android:title="@string/title_icon_preference"
                android:summary="@string/summary_icon_preference"
                android:icon="@android:drawable/ic_menu_camera"/>

        <Preference
                android:key="single_line_title"
                android:title="@string/title_single_line_title_preference"
                android:summary="@string/summary_single_line_title_preference"
                app:singleLineTitle="true"/>
    </PreferenceCategory>

    <PreferenceCategory
            android:title="@string/widgets">

        <CheckBoxPreference
                android:key="checkbox"
                android:title="@string/title_checkbox_preference"
                android:summary="@string/summary_checkbox_preference"/>

        <SwitchPreferenceCompat
                android:key="switch"
                android:title="@string/title_switch_preference"
                android:summary="@string/summary_switch_preference"/>

        <DropDownPreference
                android:key="dropdown"
                android:title="@string/title_dropdown_preference"
                android:entries="@array/entries"
                app:useSimpleSummaryProvider="true"
                android:entryValues="@array/entry_values"/>

        <SeekBarPreference
                android:key="seekbar"
                android:title="@string/title_seekbar_preference"
                android:max="10"
                android:defaultValue="5"/>
    </PreferenceCategory>

    <PreferenceCategory
            android:title="@string/dialogs">

        <EditTextPreference
                android:key="edittext"
                android:title="@string/title_edittext_preference"
                app:useSimpleSummaryProvider="true"
                android:dialogTitle="@string/dialog_title_edittext_preference"/>

        <ListPreference
                android:key="list"
                android:title="@string/title_list_preference"
                app:useSimpleSummaryProvider="true"
                android:entries="@array/entries"
                android:entryValues="@array/entry_values"
                android:dialogTitle="@string/dialog_title_list_preference"/>

        <MultiSelectListPreference
                android:key="multi_select_list"
                android:title="@string/title_multi_list_preference"
                android:summary="@string/summary_multi_list_preference"
                android:entries="@array/entries"
                android:entryValues="@array/entry_values"
                android:dialogTitle="@string/dialog_title_multi_list_preference"/>
    </PreferenceCategory>

    <PreferenceCategory
            android:key="advanced"
            android:title="@string/advanced_attributes"
            app:initialExpandedChildrenCount="1">

        <Preference
                android:key="expandable"
                android:title="@string/title_expandable_preference"
                android:summary="@string/summary_expandable_preference"/>

        <Preference
                android:title="@string/title_intent_preference"
                android:summary="@string/summary_intent_preference">

            <intent android:action="android.intent.action.VIEW"
                    android:data="http://www.android.com"/>

        </Preference>

        <SwitchPreferenceCompat
                android:key="parent"
                android:title="@string/title_parent_preference"
                android:summary="@string/summary_parent_preference"/>

        <SwitchPreferenceCompat
                android:key="child"
                android:dependency="parent"
                android:title="@string/title_child_preference"
                android:summary="@string/summary_child_preference"/>

        <SwitchPreferenceCompat
                android:key="toggle_summary"
                android:title="@string/title_toggle_summary_preference"
                android:summaryOn="@string/summary_on_toggle_summary_preference"
                android:summaryOff="@string/summary_off_toggle_summary_preference"/>

        <Preference
                android:key="copyable"
                android:title="@string/title_copyable_preference"
                android:summary="@string/summary_copyable_preference"
                android:selectable="false"
                app:enableCopying="true"/>
    </PreferenceCategory>

</PreferenceScreen>

The sample implements onPreferenceStartFragment, onPreferenceStartScreen, and onPreferenceStartInitialScreen:

public static class SettingsFragment extends LeanbackSettingsFragmentCompat {
    @Override
    public void onPreferenceStartInitialScreen() {
        startPreferenceFragment(new DemoFragment());
    }

    @Override
    public boolean onPreferenceStartFragment(PreferenceFragmentCompat caller, Preference pref) {
        final Bundle args = pref.getExtras();
        final Fragment f = getChildFragmentManager().getFragmentFactory().instantiate(
                requireActivity().getClassLoader(), pref.getFragment());
        f.setArguments(args);
        f.setTargetFragment(caller, 0);
        if (f instanceof PreferenceFragmentCompat
                || f instanceof PreferenceDialogFragmentCompat) {
            startPreferenceFragment(f);
        } else {
            startImmersiveFragment(f);
        }
        return true;
    }

    @Override
    public boolean onPreferenceStartScreen(PreferenceFragmentCompat caller,
            PreferenceScreen pref) {
        final Fragment fragment = new DemoFragment();
        final Bundle args = new Bundle(1);
        args.putString(PreferenceFragmentCompat.ARG_PREFERENCE_ROOT, pref.getKey());
        fragment.setArguments(args);
        startPreferenceFragment(fragment);
        return true;
    }
}

/**
 * The fragment that is embedded in SettingsFragment
 */
public static class DemoFragment extends LeanbackPreferenceFragmentCompat {

    @Override
    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
        // Load the preferences from an XML resource
        setPreferencesFromResource(R.xml.preferences, rootKey);
    }
}

Summary

Public constructors

Public functions

View!
onCreateView(
    inflater: LayoutInflater!,
    container: ViewGroup!,
    savedInstanceState: Bundle!
)

This function is deprecated.

Unit

This function is deprecated.

Boolean
abstract Unit

Called to instantiate the initial androidx.preference.PreferenceFragment to be shown in this fragment.

Unit

This function is deprecated.

Unit
onViewCreated(view: View!, savedInstanceState: Bundle!)

This function is deprecated.

Unit

Displays a fragment to the user, temporarily replacing the contents of this fragment.

Unit

Displays a preference fragment to the user.

Inherited functions

From android.app.Fragment
Unit
dump(
    prefix: String!,
    fd: FileDescriptor!,
    writer: PrintWriter!,
    args: Array<String!>!
)

This function is deprecated.

Boolean
equals(o: Any!)

This function is deprecated.

Activity!

This function is deprecated.

Boolean

This function is deprecated.

Boolean

This function is deprecated.

Bundle!

This function is deprecated.

FragmentManager!

This function is deprecated.

Context!

This function is deprecated.

Transition!

This function is deprecated.

Transition!

This function is deprecated.

FragmentManager!

This function is deprecated.

Any!

This function is deprecated.

Int

This function is deprecated.

LayoutInflater!

This function is deprecated.

LoaderManager!

This function is deprecated.

Fragment!

This function is deprecated.

Transition!

This function is deprecated.

Resources!

This function is deprecated.

Boolean

This function is deprecated.

Transition!

This function is deprecated.

Transition!

This function is deprecated.

Transition!

This function is deprecated.

String!
getString(resId: Int)

This function is deprecated.

String!

This function is deprecated.

Fragment!

This function is deprecated.

Int

This function is deprecated.

CharSequence!
getText(resId: Int)

This function is deprecated.

Boolean

This function is deprecated.

View!

This function is deprecated.

Int

This function is deprecated.

java-static Fragment!
instantiate(context: Context!, fname: String!)

This function is deprecated.

Boolean

This function is deprecated.

Boolean

This function is deprecated.

Boolean

This function is deprecated.

Boolean

This function is deprecated.

Boolean

This function is deprecated.

Boolean

This function is deprecated.

Boolean

This function is deprecated.

Boolean

This function is deprecated.

Unit
onActivityCreated(savedInstanceState: Bundle!)

This function is deprecated.

Unit
onActivityResult(requestCode: Int, resultCode: Int, data: Intent!)

This function is deprecated.

Unit
onAttach(context: Context!)

This function is deprecated.

Unit
onAttachFragment(childFragment: Fragment!)

This function is deprecated.

Unit

This function is deprecated.

Boolean

This function is deprecated.

Unit
onCreate(savedInstanceState: Bundle!)

This function is deprecated.

Animator!
onCreateAnimator(transit: Int, enter: Boolean, nextAnim: Int)

This function is deprecated.

Unit
onCreateContextMenu(
    menu: ContextMenu!,
    v: View!,
    menuInfo: ContextMenu.ContextMenuInfo!
)

This function is deprecated.

Unit
onCreateOptionsMenu(menu: Menu!, inflater: MenuInflater!)

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

LayoutInflater!
onGetLayoutInflater(savedInstanceState: Bundle!)

This function is deprecated.

Unit

This function is deprecated.

Unit
onInflate(attrs: AttributeSet!, savedInstanceState: Bundle!)

This function is deprecated.

Unit

This function is deprecated.

Unit
onMultiWindowModeChanged(
    isInMultiWindowMode: Boolean,
    newConfig: Configuration!
)

This function is deprecated.

Boolean

This function is deprecated.

Unit

This function is deprecated.

Unit
onPictureInPictureModeChanged(
    isInPictureInPictureMode: Boolean,
    newConfig: Configuration!
)

This function is deprecated.

Unit

This function is deprecated.

Unit
onRequestPermissionsResult(
    requestCode: Int,
    permissions: Array<String!>!,
    grantResults: IntArray!
)

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit
onTrimMemory(level: Int)

This function is deprecated.

Unit
onViewStateRestored(savedInstanceState: Bundle!)

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit
requestPermissions(permissions: Array<String!>!, requestCode: Int)

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit
setMenuVisibility(menuVisible: Boolean)

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit
setTargetFragment(fragment: Fragment!, requestCode: Int)

This function is deprecated.

Unit
setUserVisibleHint(isVisibleToUser: Boolean)

This function is deprecated.

Boolean

This function is deprecated.

Unit

This function is deprecated.

Unit
startActivityForResult(intent: Intent!, requestCode: Int)

This function is deprecated.

Unit
startIntentSenderForResult(
    intent: IntentSender!,
    requestCode: Int,
    fillInIntent: Intent!,
    flagsMask: Int,
    flagsValues: Int,
    extraFlags: Int,
    options: Bundle!
)

This function is deprecated.

Unit

This function is deprecated.

String!

This function is deprecated.

Unit

This function is deprecated.

From androidx.preference.PreferenceFragment.OnPreferenceStartFragmentCallback
abstract Boolean

Called when the user has clicked on a Preference that has a fragment class name associated with it.

From androidx.preference.PreferenceFragment.OnPreferenceStartScreenCallback
abstract Boolean

Called when the user has clicked on a PreferenceScreen in order to navigate to a new screen of preferences.

Public constructors

LeanbackSettingsFragment

Added in 1.1.0
Deprecated in 1.1.0
LeanbackSettingsFragment()

Public functions

onCreateView

Added in 1.1.0
Deprecated in 1.1.0
fun onCreateView(
    inflater: LayoutInflater!,
    container: ViewGroup!,
    savedInstanceState: Bundle!
): View!

onPause

Added in 1.1.0
Deprecated in 1.1.0
fun onPause(): Unit

onPreferenceDisplayDialog

Added in 1.1.0
Deprecated in 1.1.0
fun onPreferenceDisplayDialog(caller: PreferenceFragment, pref: Preference!): Boolean
Parameters
caller: PreferenceFragment

The fragment containing the preference requesting the dialog

pref: Preference!

The preference requesting the dialog

Returns
Boolean

true if the dialog creation has been handled

onPreferenceStartInitialScreen

Added in 1.1.0
Deprecated in 1.1.0
abstract fun onPreferenceStartInitialScreen(): Unit

Called to instantiate the initial androidx.preference.PreferenceFragment to be shown in this fragment. Implementations are expected to call startPreferenceFragment.

onResume

Added in 1.1.0
Deprecated in 1.1.0
fun onResume(): Unit

onViewCreated

Added in 1.1.0
Deprecated in 1.1.0
fun onViewCreated(view: View!, savedInstanceState: Bundle!): Unit

startImmersiveFragment

Added in 1.1.0
Deprecated in 1.1.0
fun startImmersiveFragment(fragment: Fragment): Unit

Displays a fragment to the user, temporarily replacing the contents of this fragment.

Parameters
fragment: Fragment

Fragment instance to be added.

startPreferenceFragment

Added in 1.1.0
Deprecated in 1.1.0
fun startPreferenceFragment(fragment: Fragment): Unit

Displays a preference fragment to the user. This method can also be used to display list-style fragments on top of the stack of preference fragments.

Parameters
fragment: Fragment

Fragment instance to be added.