1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package androidx.transition; 18 19 import android.os.Build; 20 import android.view.ViewGroup; 21 22 import androidx.annotation.NonNull; 23 24 /** 25 * Compatibility utilities for platform features of {@link ViewGroup}. 26 */ 27 class ViewGroupUtils { 28 29 /** 30 * Backward-compatible {@link ViewGroup#getOverlay()}. 31 */ 32 static ViewGroupOverlayImpl getOverlay(@NonNull ViewGroup group) { 33 if (Build.VERSION.SDK_INT >= 18) { 34 return new ViewGroupOverlayApi18(group); 35 } 36 return ViewGroupOverlayApi14.createFrom(group); 37 } 38 39 /** 40 * Provides access to the hidden ViewGroup#suppressLayout method. 41 */ 42 static void suppressLayout(@NonNull ViewGroup group, boolean suppress) { 43 if (Build.VERSION.SDK_INT >= 18) { 44 ViewGroupUtilsApi18.suppressLayout(group, suppress); 45 } else { 46 ViewGroupUtilsApi14.suppressLayout(group, suppress); 47 } 48 } 49 50 private ViewGroupUtils() { 51 } 52 } 53
