用字典解析JSON数组

NSDictionary *dataDictionary = [NSJSonSerialization JSONObjectWithdata:jsonData options:0 error:&error];NSLog(@"%@", dataDictionary);//NSArray *ar = [NSArray arrayWithObject:dataDictionary];//REMOVEDfor (NSString *key in [dataDictionary allKeys]) {    NSDictionary *dic=[dataDictionary objectForKey:key];//ADDED    for (NSString *dickey in [dic allKeys]) { //MODIFIED        NSDictionary *dict=[dic objectForKey:dicKey];//ADDED        TickerData *t=[[TickerData alloc] init];//ALLOC INIT ?        t.currency = key;//EDITED        t.symbol = [dict objectForKey:@"symbol"];        t.last = [dict objectForKey:@"last"];        [_tickerArray addObject:t];    }}

您的数据不包含任何数组，而是所有字典，请尝试上面的代码以及注释。

希望它能..

编辑：

是的，您也已初始化对象，如上面其他答案中所建议。