檢查第二個UIAlertView的buttonIndex

Question

我在方法中有2個alertView，我想檢查第二個alertView的按鈕索引。我該怎麼做？我想獲取else條件的buttonIndex。以下是我正在嘗試的代碼。要做到這一點

-(IBAction)buttonClick{ 

    NSString *connect = [NSString stringWithContentsOfURL:[NSURL URLWithString:@"http://www.xyz.com"] encoding:NO error:nil]; 

    if(connect == NULL) {   
     UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"No Internet Connection" message:@"Please check your internet connection" delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil];   
     [alert show];    
    } else {  
     UIAlertView *alert1=[[UIAlertView alloc]initWithTitle:@"Upload to the server?" message:@"" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:@"CANCEL",nil];  
     [alert1 show];   
    } 
} 

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { 
    if (buttonIndex == 0) { 
     My functionality 
} 

Answer 1

一種方法是具有警報視圖的情況下，全球和檢查那些在alertview的委託方法：

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex 
{ 
    // assuming the myAlert2 is your alert's instance 
    if (alertView == myAlert2) 
    { 
     if (buttonIndex == 0) 
     { 
      ... 
     } 
    } 
} 

或者你也可以給標籤您的警報，然後檢查標籤該alertView的委託方法，如：

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex 
{ 
    if (alertView.tag == 2) 
    { 
     if (buttonIndex == 0) 
     { 
      ... 
     } 
    } 
} 

Answer 2

您可以使用標籤警報視圖

如：

UIAlertView *alert = [[UIAlertView alloc]initWithTitle:nil message:@"hai" delegate:self cancelButtonTitle:@"ok" otherButtonTitles: nil]; 

alert.tag = 1; 

[alert show]; 

，那麼你可以檢查像下面

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex 
{ 
    if (alertView.tag == 1) 
    { 
     if (buttonIndex == 0) 
     { 
      ... 
     } 
    } 
}