uialertview with condition if in ios

Question

如果用户取消alertview，我尝试显示某些文字时alertivew出现问题。

- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset
{
    UIALertView alertview = [[UIAlertView alloc] initWithTitle:@"New Answer"
                                             message:@"Your text"
                                                  delegate:self
                                                  cancelButtonTitle:@"Cancel"
                                                  otherButtonTitles:@"OK", nil];

    [alert show]

    if (buttonIndex == 0)
    {
        NSLog(@"ok");
        [[self sectionSelectedDisplay] setText:answerLabel];
    }
    else
    {
        NSLog(@"cancel");
    }
}

+++++++++++++++++++++++++

任何人都可以帮我解决这个问题吗？

Answer 1

UIalertviewdelegate中有一个函数

如果您有两个按钮，则功能如下

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
   if (buttonIndex == 1) {
      // this is normal button 
   }    
   else if (buttonIndex == 0) {
      // this is cancel button 
   }
}