UITextField 禁止输入空格判断

UITextField 禁止输入空格判断

方法一：添加代理

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

{
NSString *tem = [[string componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]componentsJoinedByString:@""];

if (![string isEqualToString:tem]) {
    return NO;
}
return YES;
}

方法二：

[self.searchTextField addTarget:self action:@selector(searchTextFieldChange:) forControlEvents:UIControlEventEditingChanged];

在searchTextFieldChange方法中 直接替换空的字符串

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

 textField.text =[textField.text stringByReplacingOccurrencesOfString:@" " withString:@""];

 }