src/com/android/car/media/localmediaplayer/Utils.java

/*
 * 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 com.android.car.media.localmediaplayer;

import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.net.Uri;

public class Utils {
    static final String[] PERMISSIONS = {
        android.Manifest.permission.READ_EXTERNAL_STORAGE
    };

    static Uri getUriForResource(Context context, int id) {
        Resources res = context.getResources();
        return Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE
                + "://" + res.getResourcePackageName(id)
                + "/" + res.getResourceTypeName(id)
                + "/" + res.getResourceEntryName(id));
    }

    static boolean hasRequiredPermissions(Context context) {
        for (String permission : PERMISSIONS) {
            if (context.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
                return false;
            }
        }
        return true;
    }

    static void startPermissionRequest(Context context) {
        if (!Utils.hasRequiredPermissions(context)) {
            Intent intent = new Intent(context, PermissionsActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(intent);
        }
    }
}