Question

我正在尝试将Instagram图片添加到与Twitter推文相同的数组中，但是当我加载应用时，推文仅显示在第8行之后。：

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{

    // Return the number of sections.
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return totalFeed.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (indexPath.row % 2 == 0)  {
        NSDictionary *tweet = [tweets objectAtIndex:indexPath.row];
        NSString *created = [tweet objectForKey:@"created_at"];
        NSLog(@"%@", created);
        static NSString *CellIdentifier = @"TweetCell";

        UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];
        if (cell == nil) {
            cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
        }

        NSString *text = [tweet objectForKey:@"text"];
        NSString *name = [[tweet objectForKey:@"user"] objectForKey:@"name"];



        cell.textLabel.text = text;
        cell.detailTextLabel.text = [NSString stringWithFormat:@"by %@", name];
        return cell;
        if (name == NULL) {
            NSLog(@"Tweet Doesent Exist");
        }
    }else {
        static NSString *CellIdentifier = @"InstagramCell";
        UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];


        NSDictionary *entry = instaPics[indexPath.row];
        NSString *imageUrlString = entry[@"images"][@"low_resolution"][@"url"];
        NSURL *url = [NSURL URLWithString:imageUrlString];
        [cell.imageView setImageWithURL:url];
        return cell;
    }

}


- (void)fetchTweets {
    self.twitterClient = [[AFOAuth1Client alloc] initWithBaseURL:[NSURL URLWithString:@"https://api.twitter.com/1.1/"] key:@"4oFCF0AjP4PQDUaCh5RQ" secret:@"NxAihESVsdUXSUxtHrml2VBHA0xKofYKmmGS01KaSs"];

    [self.twitterClient authorizeUsingOAuthWithRequestTokenPath:@"/oauth/request_token" userAuthorizationPath:@"/oauth/authorize" callbackURL:[NSURL URLWithString:@"floadt://success"] accessTokenPath:@"/oauth/access_token" accessMethod:@"POST" scope:nil success:^(AFOAuth1Token *accessToken, id responseObject) {
        [self.twitterClient registerHTTPOperationClass:[AFJSONRequestOperation class]];
        [self.twitterClient getPath:@"statuses/home_timeline.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
            NSArray *responseArray = (NSArray *)responseObject;
            [responseArray enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
                NSLog(@"Success: %@", obj);
                tweets = responseArray;
                [self updateArrays];
                [self.tableView reloadData];
            }];
        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
            NSLog(@"Error: %@", error);
        }];
    } failure:^(NSError *error) {
        NSLog(@"Error: %@", error);
    }];

    //[[TwitterClient sharedClient] getTimeline];
}

- (void)fetchInstagramPics {
    NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
    BOOL *status = [user boolForKey:@"isInstagramLoggedIn"];
    if (status) {
        [[InstagramClient sharedClient] getPath:@"users/self/feed"
                                     parameters:nil
                                        success:^(AFHTTPRequestOperation *operation, id responseObject) {
                                            // NSLog(@"Response: %@", responseObject);
                                            self.timelineResponse = responseObject;
                                            [self updateArrays];
                                            [self.tableView reloadData];
                                        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                                            NSLog(@"Failure: %@", error);
                                        }];
    }


}

- (void)updateArrays {
    instaPics = self.timelineResponse[@"data"];
    totalFeed = [instaPics arrayByAddingObjectsFromArray:tweets];
    instaPics = [totalFeed mutableCopy];
    tweets = [totalFeed mutableCopy];
}

- (void)fetchTimeline {
    [self fetchInstagramPics];
    [self fetchTweets];
    [self updateArrays];
    [self.tableView reloadData];
}

问题是这些帖子比indexpath.row

中的帖子要低很多

Screenshot of the App

Answer 1

我认为在主队列上重新加载数据可以解决问题。

在fetchInstagramPics和fetchTweets方法中尝试：

dispatch_async（dispatch_get_main_queue（），^ {
[self.tableView reloadData]; }）;

告诉我它是否有效。

Answer 2

我不知道你究竟想要达到什么目标，但似乎你正在形成阵列的方式并不完全正确。

 - (void)updateArrays {

    totalFeed = [instaPics arrayByAddingObjectsFromArray:tweets]; // concatinates two arrays.
    // NLog your total feed and see the behaviour 
    instaPics = [totalFeed mutableCopy];
    tweets = [totalFeed mutableCopy];
}

如果你想在备用单元格中获取推文和Instagram，就像我已附加图像一样只是不要总结instaPics＆amp;有totalFeed的推文。独立使用它们。 Alternate tweets & instagram pics

 - (void)updateArrays {

    totalFeed = [instaPics arrayByAddingObjectsFromArray:tweets]; // concatinates two arrays.

// rmeove this

//    instaPics = [totalFeed mutableCopy];
//    tweets = [totalFeed mutableCopy];
}

您的总Feed包含推文和Instagram图片的备用数据结构。和instaPics＆amp; tweets数组是它的冗余副本。

如果你想将它们保存在同一个单元格中，那么创建一次单元格并使用不带％2条件的totalFeed数组。

问题从其他Array向NSArray添加项目

2 个答案: