content: /*
   * Copyright (C) 2018 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.android.wifirttscan;
  
  import android.Manifest;
  import android.Manifest.permission;
  import android.content.pm.PackageManager;
  import android.os.Bundle;
  import androidx.annotation.NonNull;
  import androidx.core.app.ActivityCompat;
  import androidx.appcompat.app.AppCompatActivity;
  import android.util.Log;
  import android.view.View;
  
  /**
   * This is a simple splash screen (activity) for giving more details on why the user should approve
   * fine location permissions. If they choose to move forward, the permission screen is brought up.
   * Either way (approve or disapprove), this will exit to the MainActivity after they are finished
   * with their final decision.
   */
  public class LocationPermissionRequestActivity extends AppCompatActivity
          implements ActivityCompat.OnRequestPermissionsResultCallback {
  
      private static final String TAG = "LocationPermission";
  
      /* Id to identify Location permission request. */
      private static final int PERMISSION_REQUEST_FINE_LOCATION = 1;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
  
          // If permissions granted, we start the main activity (shut this activity down).
          if (ActivityCompat.checkSelfPermission(this, permission.ACCESS_FINE_LOCATION)
                  == PackageManager.PERMISSION_GRANTED) {
              finish();
          }
  
          setContentView(R.layout.activity_location_permission_request);
      }
  
      public void onClickApprovePermissionRequest(View view) {
          Log.d(TAG, "onClickApprovePermissionRequest()");
  
          // On 23+ (M+) devices, fine location permission not granted. Request permission.
          ActivityCompat.requestPermissions(
                  this,
                  new String[] {Manifest.permission.ACCESS_FINE_LOCATION},
                  PERMISSION_REQUEST_FINE_LOCATION);
      }
  
      public void onClickDenyPermissionRequest(View view) {
          Log.d(TAG, "onClickDenyPermissionRequest()");
          finish();
      }
  
      /*
       * Callback received when a permissions request has been completed.
       */
      @Override
      public void onRequestPermissionsResult(
              int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
  
          String permissionResult =
                  "Request code: "
                          + requestCode
                          + ", Permissions: "
                          + permissions
                          + ", Results: "
                          + grantResults;
          Log.d(TAG, "onRequestPermissionsResult(): " + permissionResult);
  
          if (requestCode == PERMISSION_REQUEST_FINE_LOCATION) {
              // Close activity regardless of user's decision (decision picked up in main activity).
              finish();
          }
      }
  }
  