Question

我使用NSJSONSerialization类解析json并能够在控制台日志中显示所有数据。但不知道如何将所有数据显示到表视图中。以下是我的代码。请帮我看看如何在tableview中显示国家名称和标志图像。在此先感谢。

-(void)connectionDidFinishLoading:(NSURLConnection *)connection

{
    /*  NSLog(@"%d",webdata.length);

     NSString *receivedstring=[[NSString alloc]initWithData:webdata encoding:NSASCIIStringEncoding];
     NSLog(@"%@",receivedstring);
     */ 
    NSError *e = nil;
    NSMutableDictionary *jsonArray = [NSJSONSerialization JSONObjectWithData: webdata options: NSJSONReadingMutableContainers error: &e];

    feedforentry=[jsonArray objectForKey:@"worldpopulation"];

    // NSLog(@"%d",feedforentry.count);


    for (NSDictionary *review in feedforentry) {

        name = [review objectForKey:@"country"];
        NSLog(@"%@",name);
        NSString *populations = [review objectForKey:@"population"];
        NSLog(@"%@",populations);
        NSString *rank = [review objectForKey:@"rank"];
        NSLog(@"%@",rank);
        NSString *flag = [review objectForKey:@"flag"];
        NSLog(@"%@",flag);



    }

    [self.tableview reloadData];


}




-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [feedforentry count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
    if(!cell)
    {
        cell = [[UITableViewCell alloc] init];

    }



    //cell.textLabel.text=[[feedforentry objectAtIndex:indexPath.row]nam ];
    return cell;
}





- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

@end

我想在tableview中显示国家/地区名称和标记图像。提前谢谢。

Answer 1

试试这个

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
  if(!cell)
  {
    cell = [[UITableViewCell alloc] init];

  }

    NsDictionary *review =  [feedforentry objectAtIndex:indexPath.row];
    NSString *rank = [review objectForKey:@"rank"];
    Cell.textlabel.text = rank;
    Return cell;

 }

Answer 2

你拥有的代码是正确的想法。在tableView:cellForRowAtIndexPath:方法中，您只需获取详细信息

NSDictionary *countryInfo = feedforentry[indexPath.row];
NSString *name = countryInfo[@"country"];
NSString *flag = countryInfo[@"flag"];

然后使用这些值来设置单元格。

Answer 3

方法tableView:cellForRowAtIndexPath:是你应该像这样配置你的单元格的地方：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
    if(!cell)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];
    }

    NSDictionary *dict = feedforentry[indexpath.row];

    cell.textLabel.text= [NSString stringWithFormat:@"%@ - %@", dict[@"flag"], dict[@"country@"]];

    return cell;
}

希望这有帮助。

Answer 4

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath*)indexPath
{
static NSSting *CellIdntifier=@"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdntifier];
if(!cell)
{
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdntifier];
}

NSDictionary *dict = feedforentry[indexpath.row];

cell.textLabel.text= dict[@"country"];
cell.imageView.image=[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:dict[@"flag"]]]];

return cell;
}

将json数据显示到tableview中

4 个答案: