如何将多个数组加载到UITableView中?

时间:2014-04-01 18:58:02

标签: ios objective-c arrays uitableview nsmutablearray

我正在调用一些JSON并使用单个数组中的数据加载表。那工作得很好。现在我想弄清楚

A。将数据加载到表格中的最佳方式

B。关闭数据的最佳方法。

这是iOS开发的第6周,我很新。我有一个相当弱的Javascript背景。

我的第一个(尝试失败)方法将数组连接在一起并将其传递给tableview。我认为这是错误的,原因有很多(后来切片的问题,知道“删除哪一个”等)。非常感谢任何帮助!

无效:

NSDictionary *dataDictionary = [NSJSONSerialization JSONObjectWithData:responseObject options:0 error:&errorJson];
self.allGroups = [dataDictionary objectForKey:@"all_groups"];  //NSDictionary
  self.firstGroup = [self.allGroups objectForKey:@"first_group"]; //NSMutableArray
  self.secondGroup = [self.allGroups objectForKey:@"second_group"]; //NSMutableArray
  self.thirdGroup = [self.allGroups objectForKey:@"third_group"]; //NSMutableArray

NSMutableArray *allGroupsArray = [self.firstGroup arrayByAddingObjectsInArray:[self.secondGroup arrayByAddingObjectsInArray:self.thirdGroup]];

现在可以正常工作,但无法在表格视图中找出多个数组:

-(void) getTheData {

  NSString *sessionToken = [[AFOAuthCredential retrieveCredentialWithIdentifier:@"myToken"] accessToken];

    if (sessionToken == nil) {
        LoginViewController *loginView = [[LoginViewController alloc] init];
        [self presentViewController:loginView animated:NO completion:nil];
        return;
    }

  NSURL *url = [NSURL URLWithString:@"https://greatwebsitetogetdata.com"];
  AFOAuth2Client *oauthClient = [AFOAuth2Client clientWithBaseURL:url clientID:@"MY_CLIENT" secret:@"1234567890abc"];

  [oauthClient getPath:@"/api/v1/json" parameters:@{@"access_token": sessionToken} success:^(AFHTTPRequestOperation *operation, id responseObject) {
      NSError *errorJson = nil;
  NSDictionary *dataDictionary = [NSJSONSerialization JSONObjectWithData:responseObject options:0 error:&errorJson];
  self.allGroups = [dataDictionary objectForKey:@"all_groups"];  //This is a NSDictionary
  self.firstGroup = [self.allGroups objectForKey:@"first_group"]; //This is a NSMutableArray
  self.secondGroup = [self.allGroups objectForKey:@"second_group"]; //This is a NSMutableArray
  self.thirdGroup = [self.allGroups objectForKey:@"third_group"]; //This is a NSMutableArray

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    return self.firstGroup.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    NSDictionary *groupInfo = self.firstGroup[indexPath.row];
    static NSString *cellIdentifier = @"Cell";
    groupTableViewCell *cell = (groupTableViewCell *)[tableView dequeueReusableCellWithIdentifier:cellIdentifier];

    if (cell == nil) {
        cell = [[groupTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
    }
    cell.groupTitle.text= groupInfo[@"title"];
    cell.groupLikes.text= [NSString stringWithFormat:@"%@", groupInfo[@"likes"]];
    cell.groupRunDates.text= [NSString stringWithFormat:@"%@ - %@", groupInfo[@"start_date"], groupInfo[@"end_date"]];
    cell.groupAcceptance.text= groupInfo[@"acceptance_type"];
    return cell;
}

1 个答案:

答案 0 :(得分:2)

我认为数组数组对你来说会更好,每个数组代表一个部分。然后allGroups应该包含3个数组。 然后你需要覆盖数据源方法:

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return self.allGroups.count;
}

然后在:

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.allGroups[section];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    NSArray *group = self.allGroups[indexPath.section];
    NSDictionary *groupInfo = group[indexPath.row];
    static NSString *cellIdentifier = @"Cell";
    groupTableViewCell *cell = (groupTableViewCell *)[tableView dequeueReusableCellWithIdentifier:cellIdentifier];

    if (cell == nil) {
        cell = [[groupTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
    }
    cell.groupTitle.text= groupInfo[@"title"];
    cell.groupLikes.text= [NSString stringWithFormat:@"%@", groupInfo[@"likes"]];
    cell.groupRunDates.text= [NSString stringWithFormat:@"%@ - %@", groupInfo[@"start_date"], groupInfo[@"end_date"]];
    cell.groupAcceptance.text= groupInfo[@"acceptance_type"];
    return cell;
}