使用 UIImageView 上的 UIActivityIndicatorView 从 URL 加载图像

发布于 2024-10-21 00:43:36 字数 1017 浏览 2 评论 0原文

在我的 iPhone 应用程序中，我有一个 UITabelview，它通过 URL 填充数据。当我从 UITableview 中选择一个单元格时，它会调用 URL 并下载图像并传递到另一个 UITableview。当我单击单元格时，需要一段时间来加载图像并在 UITableviewcell 上保持单击状态。我有以下代码，它调用 URL 并在每次单元格调用时加载图像。

if (!cell) {
      cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"imageCell"] autorelease];
      imageView1 = [[cell subviews] lastObject];
      [cell addSubview:imageView1 ];
}

NSString fileName = image.Img;
NSString *filePath= [NSString stringWithFormat:@"http://www.abc.com/xml/id=12345",fileName];

UIImage *im = [UIImage imageWithData: [NSData dataWithContentsOfURL:[NSURL URLWithString:filePath]]];
subview = [[UIImageView alloc] initWithFrame:CGRectMake(120.0f, 10.0f,60.0f, 60.0f)]  ;
[subview setImage:im]; 
[subview setContentMode:UIViewContentModeScaleToFill];
[cell.contentView addSubview:subview];

我见过很少有应用程序会下载个人资料图片并为其加载 UIActivityIndicator 数据。我想以同样的方式在 UIImageView 上使用 UIActivityIndicator 。任何人都可以帮助我在 uiimageview 上实现 uiactivityindicator 吗？

原文

In my iphone application, I have a UITabelview which populates the data through URL. When I select one cell from UITableview, it calls the URL and downloads the image and pass on to another UITableview. When I click the cell it takes a while to load the image and stays clicked on UITableviewcell. I have the following code which calls the URL and loads the image on each cell call.

if (!cell) {
      cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"imageCell"] autorelease];
      imageView1 = [[cell subviews] lastObject];
      [cell addSubview:imageView1 ];
}

NSString fileName = image.Img;
NSString *filePath= [NSString stringWithFormat:@"http://www.abc.com/xml/id=12345",fileName];

UIImage *im = [UIImage imageWithData: [NSData dataWithContentsOfURL:[NSURL URLWithString:filePath]]];
subview = [[UIImageView alloc] initWithFrame:CGRectMake(120.0f, 10.0f,60.0f, 60.0f)]  ;
[subview setImage:im]; 
[subview setContentMode:UIViewContentModeScaleToFill];
[cell.contentView addSubview:subview];

I have seen few apps where the profile pic is getting downloaded and have UIActivityIndicator loading in the data for it. I would like to use UIActivityIndicator on UIImageView in the same way. Can anyone help me out on achieving uiactivityindicator on uiimageview.

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