v17/leanback/kitkat/android/support/v17/leanback/widget/BackgroundHelperKitkat.java

/*
 * Copyright (C) 2014 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.leanback.widget;

import android.graphics.drawable.Drawable;
import android.view.View;

class BackgroundHelperKitkat {

    public static void setBackgroundPreservingAlpha(View view, Drawable drawable) {
        if (view.getBackground() != null) {
            drawable.setAlpha(view.getBackground().getAlpha());
        }
        view.setBackground(drawable);
    }
}