| /* |
| * 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.design.widget; |
| |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.support.design.R; |
| |
| class ThemeUtils { |
| |
| private static final int[] APPCOMPAT_CHECK_ATTRS = { |
| android.support.v7.appcompat.R.attr.colorPrimary |
| }; |
| |
| static void checkAppCompatTheme(Context context) { |
| TypedArray a = context.obtainStyledAttributes(APPCOMPAT_CHECK_ATTRS); |
| final boolean failed = !a.hasValue(0); |
| if (a != null) { |
| a.recycle(); |
| } |
| if (failed) { |
| throw new IllegalArgumentException("You need to use a Theme.AppCompat theme " |
| + "(or descendant) with the design library."); |
| } |
| } |
| } |