1.TextField限制输入位数方法
(1)数字键盘输入时 (如果单纯的根据字数判断,会出现删除按钮不能用的问题)
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
WinLoginCell *cell = [self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]];
if (textField == cell.usernameTF) {
if (string.length == 0) return YES;
NSMutableString *newtxt = [NSMutableString stringWithString:textField.text];
[newtxt replaceCharactersInRange:range withString:string];
if (newtxt.length > 11) return NO;
}
return YES;
}
(2)其他键盘输入
因为有拼音和联想输入,导致上面的输入会有漏洞
查看:https://blog.csdn.net/blackwolfsky/article/details/51264060