// 判断是不是邮箱
-(BOOL)NSStirngCheckIsEmail{
NSString * EMAIL = @"[\\w!#$%&'*+/=?^_`{|}~-]+(?:\\.[\\w!#$%&'*+/=?^_`{|}~-]+)*@(?:[\\w](?:[\\w-]*[\\w])?\\.)+[\\w](?:[\\w-]*[\\w])?";
NSPredicate *regextestemail = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", EMAIL];
return ([regextestemail evaluateWithObject:self] == YES);
}
演示Demo下载:http://pan.baidu.com/s/1kUc8JDt