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目标C-UIAlertView登录后输入电子邮件id(如果ios的电子邮件id为空)

facebook-login email facebook ios

Shahrukh · 技术社区 · 10 年前

在我的代码中,如果用户使用手机号码登录facebook,有时我的电子邮件id为空值

所以我希望uialertview输入电子邮件id并传递到我的api链接

- (void) fetchFacebookUserInfo {
if ([FBSDKAccessToken currentAccessToken]) {
    [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@{@"fields": @"first_name, last_name, picture.type(large), email, name, id, gender"} ]
     startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {
         if (!error) {
             NSLog(@"fetched user:%@", result);

             NSLog(@"name:%@",[result objectForKey:@"name"]);
             NSLog(@"id:%@",[result objectForKey:@"id"]);
             NSLog(@"email:%@",[result objectForKey:@"email"]);

         if ([result objectForKey:@"email"]==NULL) {
// here i want uialertview for enter email id with validation and pass email id to my Callapi             
                 }
             } else {
                 [self CallApi:[result objectForKey:@"name"] :[result objectForKey:@"email"]];
             }
         }
     }];
  }
}

1 回复 | 直到 10 年前

Er.Shreyansh Shah Rajaram 10 年前

在中定义strName 视图控制器.h 文件

NSString *strName;

现在在您的方法中:-

    - (void) fetchFacebookUserInfo {
    if ([FBSDKAccessToken currentAccessToken]) {
        [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@{@"fields": @"first_name, last_name, picture.type(large), email, name, id, gender"} ]
         startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {
             if (!error) {
                 NSLog(@"fetched user:%@", result);

                 NSLog(@"name:%@",[result objectForKey:@"name"]);
                 NSLog(@"id:%@",[result objectForKey:@"id"]);
                 NSLog(@"email:%@",[result objectForKey:@"email"]);

strName = [result objectForKey:@"name"];

             if ([result objectForKey:@"email"]==NULL) {
                UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:APP_NAME message:@"Please enter email id" delegate:self cancelButtonTitle:@"Submit" otherButtonTitles:@"Cancel", nil];
        alertView.alertViewStyle = UIAlertViewStylePlainTextInput;
        [alertView show];
                     }
                 } else {
                     [self CallApi:strName:[result objectForKey:@"email"]];
                 }
             }
         }];
      }
    }

**确保在界面(.h文件)中设置了AlertViewDelegate,如下所示**

@interface yourViewController:UIViewController<UIAlertViewDelegate>

现在使用 UIAlertView的委托方法 如下所示:-

-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
    if(buttonIndex == 0){
        if(![CommonMethod validateEmailWithString:[alertView textFieldAtIndex:0].text]){
            NsLog(@"Please enter valid email address");
        }else{
             [self callYourWebService:strName:[alertViewAtIndex:0].text];
        }
    }
}

希望这能帮助你,让你开心。