Question

我有代码在UIImageView中显示来自json数组数据的单个图像。我想在多个UIImageViews中显示所有图像。 PLZ建议我如何循环图像显示所有。 json数组数据链接：

这是我的应用程序中的代码

 NSString *urlString=[NSString stringWithFormat:@"http://ielmo.xtreemhost.com/array.php"];

    NSURL * url=[NSURL URLWithString:urlString];

    NSData *data =[NSData dataWithContentsOfURL:url];

    NSError *error;

    NSMutableArray *json=(NSMutableArray*)[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];



    NSLog(@"%@",[json objectAtIndex:0]);

    NSString *imageString=[NSString stringWithFormat:@"%@",[json objectAtIndex:0]];

                NSURL * urlone=[NSURL URLWithString:imageString];

    NSData *datanew =[NSData dataWithContentsOfURL:urlone];

    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0,0,320,480)];

    [imageView setImage:[UIImage imageWithData:datanew]];

    testView = [[UIView alloc] initWithFrame:CGRectMake(30.0f, 300.0f, 300.0f, 200.0f)];

    [testView addSubview:imageView];

    [self.view addSubview:testView];

Answer 1

NSMutableArray *arr=[[NSMutableArray alloc] init];
NSString *urlString=[NSString stringWithFormat:@"http://ielmo.xtreemhost.com/array.php"];

NSURL * url=[NSURL URLWithString:urlString];

NSData *data =[NSData dataWithContentsOfURL:url];

NSError *error;

NSMutableArray *json=(NSMutableArray*)[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];

NSLog(@"%d",[json count]);

NSLog(@"%@",[json objectAtIndex:0]);
NSString *imageString;
for (int i=0; i<[json count]; i++) {
     imageString=[NSString stringWithFormat:@"%@",[json objectAtIndex:i]];
    [arr addObject:imageString];
}

NSLog(@"%@",arr);
// NSString *imageString=[NSString stringWithFormat:@"%@",[json objectAtIndex:0]];

 NSURL * urlone=[NSURL URLWithString:imageString];

 NSData *datanew =[NSData dataWithContentsOfURL:urlone];

UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0,0,320,480)];

[imageView setImage:[UIImage imageWithData:datanew]];

UIView *  testView = [[UIView alloc] initWithFrame:CGRectMake(30.0f, 300.0f, 300.0f, 200.0f)];

[testView addSubview:imageView];

[self.view addSubview:testView];

Answer 2

解析JSON响应后，请使用以下代码

UIScrollView *testView = [[UIScrollView alloc] initWithFrame:CGRectMake(0,0,320,480)];
for(int i=0; i<[json count]; i++){
NSLog(@"%@",[json objectAtIndex:i]);
NSString *imageString=[NSString stringWithFormat:@"%@",[json objectAtIndex:i]];
NSURL * urlone=[NSURL URLWithString:imageString];
NSData *datanew =[NSData dataWithContentsOfURL:urlone];*
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0,i*480,320,480)];
[imageView setImage:[UIImage imageWithData:datanew]];
[testView addSubview:imageView];
}
[self.view addSubView:testView];

*注意：现在您要使用同步请求下载＆amp;在视图中加载图像。这不是一个好方法。使用异步请求下载图像并加载它们。

找到异步图像下载的以下URL

Asynchronous downloading of images for UITableView with GCD

Answer 3

你可以将像这样的数组中的图像字典导入到数据对象中假设我有PosDC obj的PostClubDC课程

 for(NSDictionary *returnDicto in dataArray)
        {
            PostClubDC *postDC = [[PostClubDC alloc] init];
            NSDictionary * returnDict = [returnDicto objectForKey:@"club_info"] ;
            postDC.postID = [[returnDict objectForKey:@"Id"]integerValue];
            postDC.postName = [returnDict objectForKey:@"name"];
            postDC.postImage = [returnDict objectForKey:@"image"];

            [yourDataArray addObject:postDC];
        }

在ios中从Url获取多个图像

3 个答案:

在ios中从Url获​​取多个图像

3 个答案:

在ios中从Url获取多个图像