UIkeyboardtypenumberpad IPAD

Question

我正在寻找UIkeyboardtypenumberpad,但在iPad示例中使用.

我的意思是,可以创建一个只模拟数字键盘的类或视图,如iPhone？

我正在使用4.1 sdk版本.

我不想使用特殊字符,只需要数字和点.

谢谢!!

Answer 1

添加UITextFieldDelegate您的头文件(.h文件)

txtfield_name.keyboardType=UIKeyboardTypeNumbersAndPunctuation;
txtfield_name.delegate=self;

然后添加此方法

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{

  NSString *validRegEx =@"^[0-9.]*$"; //change this regular expression as your requirement       
  NSPredicate *regExPredicate =[NSPredicate predicateWithFormat:@"SELF MATCHES %@", validRegEx];
  BOOL myStringMatchesRegEx = [regExPredicate evaluateWithObject:string];   
  if (myStringMatchesRegEx)     
    return YES; 
  else
    return NO;
}