ios学习之 生成随机验证码

-(NSString *)randomPassword{

    //自动生成6位随机密码

    NSTimeInterval random=[NSDatetimeIntervalSinceReferenceDate];

    NSLog(@"now:%.6f",random);

    NSString *randomString = [NSStringstringWithFormat:@"%.6f",random];

    NSString *randompassword =[[randomStringcomponentsSeparatedByString:@"."]objectAtIndex:1];

    NSLog(@"randompassword:%@",randompassword);

   

    return randompassword;

}

 

//也可以直接用

//生成随机6位验证码

-(NSString *)randomPassword{

   //自动生成6位随机密码

    NSTimeInterval random=[NSDatetimeIntervalSinceReferenceDate];

   NSLog(@"now:%.6f",random);

   NSString *randomString = [NSStringstringWithFormat:@"%.6f",random];

   NSString *randompassword = [[randomString componentsSeparatedByString:@"."]objectAtIndex:1];

   NSLog(@"randompassword:%@",randompassword);

   return randompassword;

}