1、判断用户名，在2－16位
-(BOOL)CheckInput:(NSString *)_text
{
NSString *Regex = @"^\\w{2,16}$";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", Regex];
return [emailTest evaluateWithObject:_text];
}
2、判断手机号码，1开头的十一位数字
-(BOOL)CheckInput:(NSString *)_text
{
NSString *Regex = @"1\\d{10}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", Regex];
return [emailTest evaluateWithObject:_text];
}
3、判断邮箱
-(BOOL)CheckInput:(NSString *)_text
{
NSString *Regex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", Regex];
return [emailTest evaluateWithObject:_text];
}
4、判断密码，6－16位
-(BOOL)CheckInput:(NSString *)_text
{
NSString *Regex = @"\\w{6,16}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", Regex];
return [emailTest evaluateWithObject:_text];
}
原文：http://www.cnblogs.com/q403154749/p/3928126.html