如何从Twitter提要中获取“图像”以在iOS应用中显示

我有一个访问Twitter提要的代码，并将文本放入表格中 . 然后我编辑了代码，这样我就可以在不同的视图中以自定义的方式显示文本，但我也希望从推文中获取图像，尽管搜索超过一个小时但找不到一个引用 . 我已经看过如何“发布”图像，但为了清楚，我需要从所讨论的推文中“显示”图像 .

以下是处理Twitter Access的代码中的亮点：

-(void)twitterTimeLine
{
    ACAccountStore *account = [[ACAccountStore alloc] init];

    ACAccountType *accountType = [account accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];

    [account requestAccessToAccountsWithType:accountType options:nil completion:^(BOOL granted, NSError *error) {
        if (granted == YES)
        {
            NSArray *arrayOfAccounts = [account accountsWithAccountType:accountType];

            if ([arrayOfAccounts count] > 0)
            {
                ACAccount *twitterAccount = [arrayOfAccounts lastObject];   // last account on list of accounts
                NSURL *requestAPI = [NSURL URLWithString:@"https://api.twitter.com/1.1/statuses/user_timeline.json"];


                NSMutableDictionary *parameters = [[NSMutableDictionary alloc] init];

                [parameters setObject:@"30" forKey:@"count"];

                [parameters setObject:@"1" forKey:@"incude_entities"];

                SLRequest *posts = [SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodGET URL:requestAPI parameters:parameters];

                posts.account = twitterAccount;

                [posts performRequestWithHandler:^(NSData *response, NSHTTPURLResponse *urlResponse, NSError *error) {
                    if (response)
                    {
                        // TODO: might want to check urlResponse.statusCode to stop early
                        NSError *jsonError;  // use new instance here, you don't want to overwrite the error you got from the SLRequest
                        NSArray *array =[NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&jsonError];
                        if (array) {
                            if ([array isKindOfClass:[NSArray class]]) {
                                self.array = array;
                                NSLog(@"resulted array: %@",self.array);
                            }
                            else {
                                // This should never happen
                                NSLog(@"Not an array! %@ - %@", NSStringFromClass([array class]), array);
                            }
                        }
                        else {
                            // TODO: Handle error in release version, don't just dump out this information
                            NSLog(@"JSON Error %@", jsonError);
                            NSString *dataString = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
                            NSLog(@"Received data: %@", dataString ? dataString : response);    // print string representation if response is a string, or print the raw data object
                        }
                    }
                    else {
                        // TODO: show error information to user if request failed
                        NSLog(@"request failed %@", error);
                    }

                    self.array = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error];

                    if (self.array.count != 0)
                    {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            [self.tableView reloadData];    // this part loads into table - important!
                        });

                    }
                }];
            }
        }
        else
        {
            NSLog(@"%@", [error localizedDescription]);
        }

    }];
}

这是我如何显示推文

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *cellID = @"cellID";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];

    if (cell == nil)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];
    }

    NSDictionary *tweet = _array[indexPath.row];

    cell.textLabel.text = tweet[@"text"];
    //NSString *element = [myArray objectAtIndex:2];
    //NSString *element = myArray[2];


// I created some custom views to show the text, but kept the table for testing purposes
    TemplateView *tempView = [viewArray objectAtIndex:testCounter];
    tempView.TweetView.text = tweet[@"text"];
    // -> this was what I was hoping for // tempView.ContentView.image = tweet[@"image"];
    testCounter++;
    if (testCounter >= 30)
    {
        testCounter = 0;
    }

    return cell;
}

我拿出了我认为需要看的关键线：

tempView.TweetView.text = tweet[@"text"];
tempView.ContentView.image = tweet[@"image"];

//希望后者能像第一个那样起作用，但显然并非如此简单

这可能是不可能的，如果是这样，我如何从“链接”（网址）获取图像并确保它是图像而不是视频或其他网站？

我可以设置一个“单词搜索”来抓取从推文中的http开始的文本，并希望从字符串生成一个URL