| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package android.support.v17.preference; |
| |
| import static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP; |
| |
| import android.app.Fragment; |
| import android.os.Bundle; |
| import android.support.annotation.RestrictTo; |
| import android.support.v14.preference.PreferenceFragment; |
| import android.support.v17.leanback.widget.VerticalGridView; |
| import android.support.v7.preference.PreferenceRecyclerViewAccessibilityDelegate; |
| import android.support.v7.widget.RecyclerView; |
| import android.view.LayoutInflater; |
| import android.view.ViewGroup; |
| |
| /** |
| * This fragment provides a preference fragment with leanback-style behavior, suitable for |
| * embedding into broader UI elements. |
| */ |
| public abstract class BaseLeanbackPreferenceFragment extends PreferenceFragment { |
| |
| @Override |
| public RecyclerView onCreateRecyclerView(LayoutInflater inflater, ViewGroup parent, |
| Bundle savedInstanceState) { |
| VerticalGridView verticalGridView = (VerticalGridView) inflater |
| .inflate(R.layout.leanback_preferences_list, parent, false); |
| verticalGridView.setWindowAlignment(VerticalGridView.WINDOW_ALIGN_BOTH_EDGE); |
| verticalGridView.setFocusScrollStrategy(VerticalGridView.FOCUS_SCROLL_ALIGNED); |
| verticalGridView.setAccessibilityDelegateCompat( |
| new PreferenceRecyclerViewAccessibilityDelegate(verticalGridView)); |
| return verticalGridView; |
| } |
| |
| /** |
| * @hide |
| */ |
| @RestrictTo(LIBRARY_GROUP) |
| @Override |
| public Fragment getCallbackFragment() { |
| return getParentFragment(); |
| } |
| } |