ios - Clearing fields using the same UIAlertVIew with different methods

Question

I have a methods that clears all my UITextFields in the UIViewController. I have a lot of methods that trigger that function before taking place. I want to ask the user using an UIAlertView if it's ok to clear fields before the action is taking place. I'm aware of alertView:clickedButtonAtIndex: but don't really want to use it because my switch will look like this:

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if(alertView.tag == 2000)
    {
        if (buttonIndex == 0)
        {
          // do stuff
        }
        else if (buttonIndex == 1)
        {
            // do stuff
        }
    }
    if(alertView.tag == 3000)
    {
        if (buttonIndex == 0)
        {
          // do stuff
        }
        else if (buttonIndex == 1)
        {
            // do stuff
        }
    }
etc..

I'm searching for an elegant way to trigger the same UIAlertView before every function that needs to clear the screen before it's triggered.

Thanks

Answer 1

@interface 

//Keep a global references or repeated use...
@property(nonatomic, retain) UIAlertView *myAlertView;

@end



@implementation

-(void)alertViewCallingMethod
{
    //Generate the alertView on the same handle for repeated use.
     myAlertView = [[UIAlertView alloc] initWith..... ];
     myAlertView.delegate = self;
     [myAlertView show];
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if(alertView == myAlertView)
    {
        //do you stuff...
    }
}

@end

这是关于我的答案的未取消投票的补充：

提问者最后说

I'm searching for an elegant way to trigger the same UIAlertView before every function that needs to clear the screen before it's triggered.

根据上述要求，我对这个问题的回答是最合适的。我给了你答案，可以使用相同的句柄重复使用 alertView 对象，这又删除了标记单独 UIAlertView 的所有不必要的检查，并为委托中的每个对象编写检查代码。