ASIHTTPRequest异步下载未取消
我试图取消使用 ASIHTTPRequest 的异步下载，但没有任何乐趣。我正在 ViewController 的外观上将电影下载到磁盘。我想要的是当用户单击关闭以关闭视图控制器时我想取消下载。这是我到目前为止的代码：
发出请求：
-(void)retrieveLatestFile{
NSURL *url = [NSURL URLWithString:[appDelegate.urlToLoad stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
ashiRequest = [[ASIHTTPRequest requestWithURL:url] retain];
[ashiRequest setUsername:@"Appidae"];
[ashiRequest setPassword:@"Dubstance1"];
[ashiRequest setDelegate:self];
[ashiRequest startAsynchronous];
[ashiRequest setDownloadProgressDelegate:progressView];
NSLog(@"Value: %f", [progressView progress]);
if ([progressView progress]==1) {
[self hideInfoPane];
}
//NSLog(@"Max: %f, Value: %f", [myProgressIndicator maxValue],[myProgressIndicator doubleValue]);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *tempPath = [NSString stringWithFormat:@"%@/download/%@/%@", documentsDirectory, appDelegate.languageFolder,appDelegate.filename];
NSLog(@"Path: %@", tempPath);
[ashiRequest setDownloadDestinationPath:tempPath];
}
取消下载：
- (IBAction)closeDocDisplay:(id)sender {
// Cancels an asynchronous request
[ashiRequest clearDelegatesAndCancel];
[self dismissModalViewControllerAnimated:YES];
}
一切正常，下载正常，电影播放正常，但是当我关闭视图控制器时，请求没有取消，我的文件仍在下载（网络活动指示器在状态栏上旋转，甚至 ASIHTTP 委托错误也不会被调用。
I am trying to cancel an Asynchronous Download using ASIHTTPRequest with no joy. I am downloading a movie to disk on the appearance of a ViewController. What I want is when the user click close to dismiss the view controller I want to cancel the download. Here is the code I have so far:
Making the request:
-(void)retrieveLatestFile{
NSURL *url = [NSURL URLWithString:[appDelegate.urlToLoad stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
ashiRequest = [[ASIHTTPRequest requestWithURL:url] retain];
[ashiRequest setUsername:@"Appidae"];
[ashiRequest setPassword:@"Dubstance1"];
[ashiRequest setDelegate:self];
[ashiRequest startAsynchronous];
[ashiRequest setDownloadProgressDelegate:progressView];
NSLog(@"Value: %f", [progressView progress]);
if ([progressView progress]==1) {
[self hideInfoPane];
}
//NSLog(@"Max: %f, Value: %f", [myProgressIndicator maxValue],[myProgressIndicator doubleValue]);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *tempPath = [NSString stringWithFormat:@"%@/download/%@/%@", documentsDirectory, appDelegate.languageFolder,appDelegate.filename];
NSLog(@"Path: %@", tempPath);
[ashiRequest setDownloadDestinationPath:tempPath];
}
Cancel the the downloading:
- (IBAction)closeDocDisplay:(id)sender {
// Cancels an asynchronous request
[ashiRequest clearDelegatesAndCancel];
[self dismissModalViewControllerAnimated:YES];
}
Everything is working, the download is fine and the movie plays properly but when I dismiss the View Controller the request is not canceled and my file is still downloading (network activity indicator spins on the status bar. Even the ASIHTTP delegate error doesn't get called
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尝试使用
这应该可以。
Try using
This should work.
我知道出了什么问题了。我正在使用 Reachability 来调用我的retrieveLatestFileMethod。如果 Reachability 在应用程序中仅使用一次（可能是从委托中使用），那就没问题。但我有几个它的实例，所以它不断调用相同的函数和下载。
I figured out what was wrong. I was using Reachability to call my retrieveLatestFileMethod. That's fine if Reachability is being used just once in the app, maybe from the delegate. But I had a few instances of it so it keept calling the same functions and downloads.