Question

我需要在我的应用程序中访问照片和地图。所以我在plist文件中添加了相应的功能。但是我需要检查请求是否被允许或拒绝。没有得到怎么做请建议我此

Answer 1

您必须明确检查不同类型的权限，如图像/视频，位置，联系人列表等。

图像/视频/音频/文档等

NSString *mediaType = AVMediaTypeVideo;
AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType];
if(authStatus == AVAuthorizationStatusAuthorized)
{
   // do your logic
} else if(authStatus == AVAuthorizationStatusDenied)
{
     // denied
    [self showSettingsAlert:@"Previously you have denied"];
} else if(authStatus == AVAuthorizationStatusRestricted)
{
    // restricted, normally won't happen
   [self showSettingsAlert:@"You have revoke"];
} else if(authStatus == AVAuthorizationStatusNotDetermined)
{
    // not determined?!
    [AVCaptureDevice requestAccessForMediaType:mediaType completionHandler:^(BOOL granted)
    {
         if(granted)
         {
             [self openVideoPicker:buttonIndex];
         } else
         {
             [self showSettingsAlert:@"You have denied"];
         }
    }];
} else
{
    [self showSettingsAlert:@"You have revoke"];
}

只需根据您的要求更改AVMediaTypes。

移动联系人列表

CNAuthorizationStatus status = [CNContactStore authorizationStatusForEntityType:CNEntityTypeContacts];
if (status == CNAuthorizationStatusDenied || status == CNAuthorizationStatusRestricted)
{
     //Show Alert Access Denied
     return;
}

CNContactStore *store = [[CNContactStore alloc] init];
[store requestAccessForEntityType:CNEntityTypeContacts completionHandler:^(BOOL granted, NSError * _Nullable error)
 {
      // make sure the user granted us access
      if (!granted)
      {
          dispatch_async(dispatch_get_main_queue(), ^{

              //Show Alert Access Denied
              return;
 }

 BOOL success = [store enumerateContactsWithFetchRequest:request error:&fetchError usingBlock:^(CNContact *contact, BOOL *stop)
 {
     // build array of contacts
     NSMutableArray *contacts = [NSMutableArray array];

     NSError *fetchError;
     CNContactFetchRequest *request = [[CNContactFetchRequest alloc] initWithKeysToFetch:@[CNContactIdentifierKey, [CNContactFormatter descriptorForRequiredKeysForStyle:CNContactFormatterStyleFullName], CNContactPhoneNumbersKey, CNContactGivenNameKey, CNContactFamilyNameKey]];
     [contacts addObject:contact];
 }];
 if (!success)
 {
     [UIUtil showWarningAlert:fetchError.localizedDescription onController:self];
     return;
 }

将此代码放入您的函数中，该函数将处理此类权限验证。

对于位置，您必须实施 CLLocationManagerDelegate ，这两个函数将为您提供位置信息。

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations 
{
    currentLocation = [locations objectAtIndex:0];
    [locationManager stopUpdatingLocation];

    latitude = [NSString stringWithFormat:@"%f", currentLocation.coordinate.latitude];
    longitude = [NSString stringWithFormat:@"%f", currentLocation.coordinate.longitude];
}

-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
     if (error.domain == kCLErrorDomain && error.code == kCLErrorDenied)
     {
         [locationManager stopUpdatingLocation];
         [self showSettingsAlert:@"You have denied Location Permission"];
     }
}

不要忘记为这些代码导入适当的软件包。

Answer 2

可以使用照片选择器

../app/assets/images/uploads/profile/avatar/20/thumb_8eb67953-d383-4c1f-a42d-662903386814.jpg

对于loaction，你可以使用

UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) or .camera

并且不要忘记导入corelocation

如何在ios中检查RequestPermissions？

2 个答案: