一旦保存到，我如何循环一个nsobject

Question

我使用NSMutableArray来存储来自网络服务的列表表单中的项目。如何从数组中读取数据以显示随机引用。

因为我试图避免两次点击网络服务或者我是否使其复杂化？

NSInteger randomInt = arc4random_uniform(3);
NSString *baseUrl = @"http://movie-quotes.herokuapp.com/api/v1/quotes";
NSString *webServiceUrl= [NSString stringWithFormat:@"%@/%ld", baseUrl,(long)randomInt];
randomQuotes = nil;

dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^{
    // Load the JSON string from our web serivce (in a background thread)
    NSDictionary * dictionary = [JSONHelper loadJSONDataFromURL:webServiceUrl];

    dispatch_async(dispatch_get_main_queue(), ^{

        randomQuotes = [NSMutableArray array];

        // Iterate through the array of quotes records in the dictionary
        for (NSDictionary * oneQuote in dictionary)
        {
            Quotes* newQuotes =[[Quotes alloc] init];

            // Add our new Customer record to our NSMutableArray
            newQuotes.Quote = [oneQuote objectForKey:@"content"];
            newQuotes.FilmName = [oneQuote objectForKey:@"film"];
            [randomQuotes addObject:newQuotes];
        }
    });
});

Answer 1

您可以从这样的数组中获取随机对象。

NSUInteger randomIndex = arc4random_uniform(theArray.count);
[theArray objectAtIndex: randomIndex];

只要保留引号数组，就不需要再次点击Web服务了。