iphone - 当两个文本字段都是一些文本时如何显示警报

Question

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Answer 1

您可以使用UITextFieldDelegate的两个委托(delegate)函数

-(BOOL) textFieldShouldReturn:(UITextField *)textField
{
  [textField resignFirstResponder];
   return YES;
}

-(void)textFieldDidEndEditing:(UITextField *)textField
{
if ([self.textField1.text isEqualToString:self.textField2.text])
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Alert"
                                                    message:@"text field have same text"
                                                   delegate:nil
                                          cancelButtonTitle:@"Cancel"
                                          otherButtonTitles:nil];

    [alert show];
}
}