自定义键盘

//数字

#define NUM @"0123456789"

//字母

#define ALPHA @"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"

//数字和字母

#define ALPHANUM @"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"

 

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

{

NSCharacterSet *cs = [[NSCharacterSet characterSetWithCharactersInString:NUM] invertedSet];

NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];

return [string isEqualToString:filtered];

}

 

-(void)textFieldDidEndEditing:(UITextField *)textField{

NSRange range;

if ([self textField:textField shouldChangeCharactersInRange:range replacementString:textField.text] == YES) {

// NSLog(@"数字和字母");

}else{

// NSLog(@"不是数字或字母");

[UnityLHClass showPointOut:@"该处只应填写数字或字母"];

}

}