content: /*
   * Copyright 2017 Google Inc. All Rights Reserved.
   * 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.example.aishnaagrawal.ardemo.helper;
  
  import android.Manifest;
  import android.app.Activity;
  import android.content.pm.PackageManager;
  import android.support.v4.app.ActivityCompat;
  import android.support.v4.content.ContextCompat;
  
  /**
   * Helper to ask camera permission.
   */
  public class CameraPermissionHelper {
    private static final String CAMERA_PERMISSION = Manifest.permission.CAMERA;
    private static final int CAMERA_PERMISSION_CODE = 0;
  
    /**
     * Check to see we have the necessary permissions for this app.
     */
    public static boolean hasCameraPermission(Activity activity) {
      return ContextCompat.checkSelfPermission(activity, CAMERA_PERMISSION) ==
              PackageManager.PERMISSION_GRANTED;
    }
  
    /**
     * Check to see we have the necessary permissions for this app, and ask for them if we don't.
     */
    public static void requestCameraPermission(Activity activity) {
      ActivityCompat.requestPermissions(activity, new String[]{CAMERA_PERMISSION},
              CAMERA_PERMISSION_CODE);
    }
  }
  