添加多个确认图(UIAlertView)

Question

基本上,我尝试做的是添加多个确认页...但我不能让它工作.无论我按什么确认,"继续"按钮都会导致完全相同的事情(没有文字的主体和带有"XXXX"的主题)...任何想法如何让confimationalerts导致不同的东西？

编辑2; 无论我按什么按钮(继续或解除),应用程序都会将用户发送到mail.app ...

        -(IBAction)mail {

                    UIAlertView *mail = [[UIAlertView alloc] init];
                        [mail setTag:ALERTVIEW_MAIL_TAG];
                        [mail setTitle:@"Open mail"];
                        [mail setMessage:@"....."];
                        [mail setDelegate:self];
                        [mail addButtonWithTitle:@"Continue"];
                        [mail addButtonWithTitle:@"Dismiss"];
                        [mail show];
                        [mail release];

                    }

                    -(IBAction)feedback {
                        UIAlertView *feedback = [[UIAlertView alloc] init];
                        [feedback setTag:ALERTVIEW_TIPSA_TAG];
                        [feedback setTitle:@"Open mail"];
                        [feedback setMessage:@"....."];
                        [feedback setDelegate:self];
                        [feedback addButtonWithTitle:@"Continue"];
                        [feedback addButtonWithTitle:@"dismiss"];
                        [feedback show];
                        [feedback release];
                    }

- (void)showConfirmAlert
                    {   
                    }   

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
                   if([alertView tag] == ALERTVIEW_FEEDBACK_TAG) {
                        NSURL *url = [[NSURL alloc] initWithString:@"mailto:?subject=XXXX"];
                        [[UIApplication sharedApplication] openURL:url];
                        [url release];
                    }

        else if (buttonIndex == 1) {
        }



           else  if ([alertView tag] == ALERTVIEW_MAIL_TAG) {
                        NSString *subject = @"YYYY";
                        NSString *body = @".....";
                        NSString *path = [NSString stringWithFormat:@"mailto:?subject=%@&body=%@", subject, body];
                        NSURL *url = [NSURL URLWithString:[path stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
                        [[UIApplication sharedApplication] openURL:url];
                    }

            else if (buttonIndex == 1) {
        }

    }

Answer 1

你需要设置tag你的UIAlertView目标和你的委托方法对它们进行切换,这就是为什么委托方法采用的UIAlertView,所以你可以基于按钮被按下哪个对象上做的东西.

#define ALERTVIEW_MAIL_TAG     100
#define ALERTVIEW_FEEDBACK_TAG 101


- (IBAction) feedback {
   UIAlertView *feedback = [[UIAlertView alloc] init];
   [feedback setTag:ALERTVIEW_FEEDBACK_TAG];
   //...
}

- (IBAction) mail {
   UIAlertView *mail = [[UIAlertView alloc] init];
   [mail setTag:ALERTVIEW_MAIL_TAG];
}

-(void) alertView:(UIAlertView *) alertView clickedButtonAtIndex:(NSInteger) buttonIndex {
  if([alertView tag] == ALERTVIEW_MAIL_TAG) {
     //do stuff...
  } else {
     //do other stuff...
  }
}