解析Json

 1 #pragma mark- 解析JSON数据
 2 - (NSArray *)parseJSONData:(NSData *)data error:(NSString **)error {
 3     NSMutableArray *videos = nil;
 4     
 5     NSDictionary *dict = [data JSONValue];
 6     
 7     NSString *myerror = [dict objectForKey:kError];
 8     // 有错误信息
 9     if (myerror) {
10         *error = myerror;
11     } else {
12         NSArray *array = [dict objectForKey:kVideos];
13         videos = [NSMutableArray array];
14         for (NSDictionary *obj in array) {
15             Video *v = [Video videoWithDict:obj];
16             [videos addObject:v];
17         }
18     }
19     
20     return videos;
21 }