防止按钮重复点击 模型转字典 接口传参不能用汉字,要转码

#pragma mark -- 发表评论
- (IBAction)publishBtn:(id)sender {
    
    if ([self.commentType isEqualToString:@"reply"]) { //
        NSString *content = self.replyParams[@"content"];
        if (content.length < 1) {
            [MBProgressHUD showOnlyMessage:@"请输入评论内容" toView:self];
            return;
        }
    }
    
    self.publishBtn.enabled = NO;
    [self performSelector:@selector(changeBtnStatus) withObject:nil afterDelay:1.0f]; // 防止按钮重复点击
    [self distribute];
}
-(void)changeBtnStatus{
    self.publishBtn.enabled = YES;
}

[self.commenRequestModel mj_keyValues]; // 模型转字典

 如果是用别的语言的话都有将该string转为url或者网络编码的方法如:urlencode.
问题是,iphone中该如何处理这个编码问题呢?

找了答案:
[aString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];