gallerycommon/src/com/android/gallery3d/common/ApiHelper.java

/*
 * Copyright (C) 2012 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 com.android.gallery3d.common;

import android.annotation.TargetApi;
import android.os.Build;
import android.provider.MediaStore.MediaColumns;
import android.view.View;

@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public class ApiHelper {

    public static final boolean HAS_VIEW_SYSTEM_UI_FLAG_LAYOUT_STABLE =
            hasField(View.class, "SYSTEM_UI_FLAG_LAYOUT_STABLE");

    public static final boolean HAS_VIEW_SYSTEM_UI_FLAG_HIDE_NAVIGATION =
            hasField(View.class, "SYSTEM_UI_FLAG_HIDE_NAVIGATION");

    public static final boolean HAS_MEDIA_COLUMNS_WIDTH_AND_HEIGHT =
            hasField(MediaColumns.class, "WIDTH");

    public static final boolean HAS_REUSING_BITMAP_IN_BITMAP_REGION_DECODER =
            Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;

    private static boolean hasField(Class<?> klass, String fieldName) {
        try {
            klass.getDeclaredField(fieldName);
            return true;
        } catch (NoSuchFieldException e) {
            return false;
        }
    }
}