| /* |
| * Copyright (C) 2016 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 androidx.transition; |
| |
| import android.util.Log; |
| import android.view.ViewGroup; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.RequiresApi; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| |
| @RequiresApi(18) |
| class ViewGroupUtilsApi18 { |
| |
| private static final String TAG = "ViewUtilsApi18"; |
| |
| private static Method sSuppressLayoutMethod; |
| private static boolean sSuppressLayoutMethodFetched; |
| |
| static void suppressLayout(@NonNull ViewGroup group, boolean suppress) { |
| fetchSuppressLayoutMethod(); |
| if (sSuppressLayoutMethod != null) { |
| try { |
| sSuppressLayoutMethod.invoke(group, suppress); |
| } catch (IllegalAccessException e) { |
| Log.i(TAG, "Failed to invoke suppressLayout method", e); |
| } catch (InvocationTargetException e) { |
| Log.i(TAG, "Error invoking suppressLayout method", e); |
| } |
| } |
| } |
| |
| private static void fetchSuppressLayoutMethod() { |
| if (!sSuppressLayoutMethodFetched) { |
| try { |
| sSuppressLayoutMethod = ViewGroup.class.getDeclaredMethod("suppressLayout", |
| boolean.class); |
| sSuppressLayoutMethod.setAccessible(true); |
| } catch (NoSuchMethodException e) { |
| Log.i(TAG, "Failed to retrieve suppressLayout method", e); |
| } |
| sSuppressLayoutMethodFetched = true; |
| } |
| } |
| |
| private ViewGroupUtilsApi18() { |
| } |
| } |