xcode 多个 UIAlertView；每个都有自己的按钮和动作

Multiple UIAlertView; each with their own buttons and actions

提问by DiscoveryOV

Im creating a view in Xcode 4.3 and im unsure how to specify multiple UIAlertView's that have their own buttons with separate actions. Currently, my alerts have their own buttons, but the same actions. Below is my code.

我在 Xcode 4.3 中创建了一个视图，我不确定如何指定多个 UIAlertView 的，这些 UIAlertView 有自己的按钮和单独的动作。目前，我的警报有自己的按钮，但操作相同。下面是我的代码。

-(IBAction)altdev {
    UIAlertView *alert = [[UIAlertView alloc] 

                          initWithTitle:@"titleGoesHere"
                          message:@"messageGoesHere"
                          delegate:self
                          cancelButtonTitle:@"Cancel"
                          otherButtonTitles:@"Continue", nil];
[alert show];
}

-(IBAction)donate {
    UIAlertView *alert = [[UIAlertView alloc] 

                          initWithTitle:@"titleGoesHere"
                          message:@"messageGoesHere"
                          delegate:self
                          cancelButtonTitle:@"Cancel"
                          otherButtonTitles:@"Continue", nil];
    [alert show];
}

-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 1) {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.examplesite1.com"]];
         }
}


-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 1) {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"examplesite2.com"]];
    }
}  

Thanks for any help!

谢谢你的帮助！

回答by cxa

There is a useful property tagfor UIView(which UIAlertViewsubclass from). You can set different tag for each alert view.

有一个有用的属性tagfor UIView(which UIAlertViewsubclass from)。您可以为每个警报视图设置不同的标签。

UPDATE:

更新：

#define TAG_DEV 1
#define TAG_DONATE 2

- (IBAction)altdev {
    UIAlertView *alert = [[UIAlertView alloc] 

                          initWithTitle:@"titleGoesHere"
                          message:@"messageGoesHere"
                          delegate:self
                          cancelButtonTitle:@"Cancel"
                          otherButtonTitles:@"Continue", nil];
   alert.tag = TAG_DEV;
   [alert show];
}

- (IBAction)donate {
    UIAlertView *alert = [[UIAlertView alloc] 

                          initWithTitle:@"titleGoesHere"
                          message:@"messageGoesHere"
                          delegate:self
                          cancelButtonTitle:@"Cancel"
                          otherButtonTitles:@"Continue", nil];
    alert.tag = TAG_DONATE;
    [alert show];
}

-(void)alertView:(UIAlertView *)alertView
clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (alertView.tag == TAG_DEV) { // handle the altdev
      ...
    } else if (alertView.tag == TAG_DONATE){ // handle the donate

    }
}

回答by nima sp

easier & newer

更容易和更新

UIAlertView *alert = [[UIAlertView alloc] init...
alert.tag = 1;

UIAlertView *alert = [[UIAlertView alloc] init...
alert.tag = 2;



- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if(alertView.tag == 1) {
        // first alert...
    } else  {
        // sec alert...
    }
}

all done!

全部完成！

回答by GurPreet_Singh

If you find it dificult to use delegate methods to differently identifying alert view Then you can also use This Category class to use completion Block for each AlertView.

如果您发现使用委托方法来不同地识别警报视图很困难，那么您还可以使用 This Category 类为每个 AlertView 使用完成块。

Alert_ActionSheetWithBlocks

Alert_ActionSheetWithBlocks

For eg.

例如。

UIAlertView* alert1 = [[UIAlertView alloc] initWithTitle:@"AlertView+Block 1" message:@"WithBlocks" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil];

[alert1 showWithFinishBlock:^(UIAlertView *alertView, NSInteger buttonIndex){ //--AlertView1 Stuff here }];

UIAlertView* alert2 = [[UIAlertView alloc] initWithTitle:@"AlertView+Block 2" message:@"WithBlocks" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil];
[alert2 showWithFinishBlock:^(UIAlertView *alertView, NSInteger buttonIndex){ //--AlertView2 Stuff here }];

I hope this one is the more easiest way as compare to tag + delegate method..

我希望这是与标记 + 委托方法相比更简单的方法。

回答by Jeff Stone

He's right but you need to add this:

他是对的，但您需要添加以下内容：

-(void)alertView:(UIAlertView *)alertView
clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (alertView.tag == TAG_DEV && buttonIndex == 1) { // handle the altdev
      ...
    } else if (alertView.tag == TAG_DONATE && buttonIndex == 1){ // handle the donate

    }
}

if buttonIndex==1 then you're using the FIRST otherbutton. 0 would be for cancel. But just do nothing for 0

如果 buttonIndex==1 则您使用的是第一个其他按钮。0 表示取消。但是对 0 什么都不做

回答by Recycled Steel

Or you could do this (check the title name), is just another option... Mind identically titled alerts though!

或者您可以这样做（检查标题名称），这只是另一种选择...不过请注意标题相同的警报！

-(IBAction)altdev {
UIAlertView *alert = [[UIAlertView alloc] 

                      initWithTitle:@"titleOneGoesHere"
                      message:@"messageGoesHere"
                      delegate:self
                      cancelButtonTitle:@"Cancel"
                      otherButtonTitles:@"Continue", nil];
[alert show];
}

-(IBAction)donate {
UIAlertView *alert = [[UIAlertView alloc] 

                      initWithTitle:@"titleTwoGoesHere"
                      message:@"messageGoesHere"
                      delegate:self
                      cancelButtonTitle:@"Cancel"
                      otherButtonTitles:@"Continue", nil];
[alert show];
}

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

if (buttonIndex == 1)
{
    if([[alertView title] isEqualToString:@"titleOneGoesHere"])
    {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.examplesite1.com"]];
    }
    else
    {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"examplesite2.com"]];
    }
}