iOS将字典转换成特定格式的字符串

在进行网络请求是需要用到特定格式的字符串，比如post请求时的接口格式如下：http://mobile.ximalaya.com/mobile/track/comment？device=android&pageSize=15&pageId=2&trackId=1234 将写好的字典转换成这种格式的方法：//将字典转换成字符串 key=value&key=value&key=value- (NSString *)_parseDictionaryToFormattedString:(NSDictionary *)dic{ NSMutableArray *tempArray = [NSMutableArray array]; NSArray *keyArray = [dic allKeys]; for (NSString *key in keyArray) { NSString *valueString = [dic objectForKey:key]; NSString *formattedString = [NSString stringWithFormat:@"%@=%@", key, valueString]; [tempArray addObject:formattedString]; } NSString *finalString = [tempArray componentsJoinedByString:@"&"]; return finalString;}