时间：2021-04-26 11:03:46 | 栏目：iOS代码 | 点击：次
首先我们要设置一下键盘类型
textFiled.keyboardType = UIKeyboardTypeASCIICapable; (根据个人喜好设置键盘)
然后我们要设置textfield的代理<UITextFieldDelegate>
设置好代理就开始写键盘了
先来定义几个宏定义
#define NUM @"0123456789" #define ALPHA @"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" #define ALPHANUM @"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
然后写代理方法
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
NSCharacterSet *cs = [[NSCharacterSet characterSetWithCharactersInString:ALPHANUM] invertedSet];
NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];
return [string isEqualToString:filtered];
}
注:需要给哪个textfield设置键盘,就给哪个textfield设置代理即可