如何在UIVIewController中添加多个UIAlertview？

问题描述：

喜在我的视图控制器有一个以上的按钮，这些按钮将通过靶向的另一种方法。所以我用下面的代码而是两个警报享有如何在UIVIewController中添加多个UIAlertview？

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

这种方法完全不来电。这是我使用的整个代码

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if(indexPath.section==1) 
    { 
     if(indexPath.row==0) 
     { 
      GMMAboutUsViewController *aboutus= [self.storyboard instantiateViewControllerWithIdentifier:@"aboutus"]; 
      [self.navigationController pushViewController:aboutus animated:YES]; 
     } 
     else if (indexPath.row==1) 
     { 
      GMMTermsOfServiceViewController *termsofservice= [self.storyboard instantiateViewControllerWithIdentifier:@"termsofservice"]; 
      [self.navigationController pushViewController:termsofservice animated:YES]; 
     } 
     else if (indexPath.row==2) 
     { 
      GMMUserGuideViewController *userguide= [self.storyboard instantiateViewControllerWithIdentifier:@"userguide"]; 
      [self.navigationController pushViewController:userguide animated:YES]; 

     } 
     else 
     { 
      GMMCreditsandCopyrightsViewController *creditsandcopyrights= [self.storyboard instantiateViewControllerWithIdentifier:@"creditsandcopyrights"]; 
      [self.navigationController pushViewController:creditsandcopyrights animated:YES]; 

     } 
    } 
    else 
    { 
     if(indexPath.row==0) 
     { 
      alertDeregister=[[UIAlertView alloc] 
             initWithTitle:@"Deregister" 
             message:@"Are you sure you want to Deregister ? " 
             delegate:nil 
             cancelButtonTitle:@"NO" 
             otherButtonTitles:nil, nil]; 
      alertDeregister.tag=kFirstAlertViewTag; 
      [alertDeregister addButtonWithTitle:@"YES"]; 
      [alertDeregister show]; 

     } 
     else 
     { 
      alertLogout=[[UIAlertView alloc] 
             initWithTitle:@"Logout" 
             message:@"Are you sure you want to logout ? " 
             delegate:nil 
             cancelButtonTitle:@"cancel" 
             otherButtonTitles:nil, nil]; 
      alertLogout.tag=kSecondAlertViewTag; 
      [alertLogout addButtonWithTitle:@"Logout"]; 
      [alertLogout show]; 

     } 

    } 
} 

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex 
{ 
    NSString *title = [alertView buttonTitleAtIndex:buttonIndex]; 
    if(alertView==alertDeregister) 
    { 
     if(buttonIndex==0) 
     { 
      [self deregister]; 
     } 

    } 
    else if (alertView==alertLogout) 
    { 
     if(buttonIndex==0) 
     { 
      GMMLoginController *login = [self.storyboard instantiateViewControllerWithIdentifier:@"l"]; 
      [self presentModalViewController:login animated:NO]; 
     } 
    } 

}

您设置alertView到零的代表。在你的'[[UIAlertView alloc] initWith ...]'用'delegate：self'替换'delegate：nil'。 – 2013-04-09 19:11:14

我添加了委托：自我但仍然不能工作 – Naveen 2013-04-09 19:15:10

您是否在.h文件中添加了协议？ – 2013-04-09 19:19:05

答

您应该将自己作为委托来传递。

像

alertLogout=[[UIAlertView alloc] 
           initWithTitle:@"Logout" 
           message:@"Are you sure you want to logout ? " 
           delegate:self 
           cancelButtonTitle:@"cancel" 
           otherButtonTitles:nil, nil];

答

你不应该添加到您的.h文件中，只是添加委托：创建警报视图应该允许被称为clickedButtonAtindex方法时的自我。请加

NSLog("clickedButtonAtIndex called");

您clickedButtonAtIndex方法来检查其是否作为问题呼叫可以在其他地方

好多了。谢谢！ – 2013-07-18 00:29:50

如何在UIVIewController中添加多个UIAlertview？

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