ResourceUtils.java

/*
 * 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 com.android.utils;

import android.content.Context;
import android.content.res.Resources;

public class ResourceUtils {

    public static int getResourceIdFromString(Context context, String resourceIdString) {
        if (resourceIdString == null) {
            return 0;
        }

        if (resourceIdString.startsWith("@")) {
            resourceIdString = resourceIdString.substring(1);
        }

        String[] pair = resourceIdString.split("/");
        if (pair == null || pair.length != 2) {
            throw new IllegalArgumentException("Resource parameter is malformed: " +
                    resourceIdString);
        }

        Resources res = context.getResources();
        return res.getIdentifier(pair[1], pair[0], context.getPackageName());
    }

    public static String readStringByResourceIdFromString(Context context,
                                                          String resourceIdString) {
        int resourceId = getResourceIdFromString(context, resourceIdString);
        if (resourceId != 0) {
            return context.getString(resourceId);
        }

        return null;
    }
}