textFieldShouldBeginEditing 仅在 iPad 中被重复调用

Question

我有两个文本字段（名称和 phone#）。用户注册后，用户将无法编辑 phone 数字文本字段。当用户单击 phone 数字文本字段时，我正在检查条件。如果已注册，我将创建警告说 "Cannot edit"。当我点击 "ok" 时，我关闭了键盘。我正在使用以下代码来做到这一点

-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
 if(registered)
 {
   dismissAlert = [[UIAlertView alloc]initWithTitle:@"cannot edit" message:nil delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
   [dismissAlert show];
 }
}

if([title isEqualToString:@"OK"])
{
   [self.view endEditing:YES];
   [self.PhoneNumber resignFirstResponder];
   dismissAlert = nil;
}

但是多次调用了 textFieldShouldBeginEditing。它只发生在 iPad.

Answer 1

试试这个 -

-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
    if(textField == txtPhone)
    {
         [self performSelector:@selector(phoneAlert) withObject:nil afterDelay:0.1];
         return NO;
    }
    return YES;
}

-(void)phoneAlert
{
     dismissAlert = [[UIAlertView alloc]initWithTitle:@"cannot edit" message:nil delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
     [dismissAlert show];
}

Answer 2

终于，我明白了。我设置

self.PhoneNumber.userInteractionEnabled = NO;

textFieldShouldBeginEditing 仅在 iPad 中被重复调用

textFieldShouldBeginEditing is called repeatedly only in iPad

objective-c

uitextfield

ipad

ios