我正在尝试使用 AsiHttpRequest 显示下载进度,如下所示:300 kb / 5 Mb 并不断更新第一个值。我知道如果我使用 -(void)request:(ASIHTTPRequest *)request didReceiveData:(NSData *)data 我需要自己管理 nsdata 对象并自己编写下载的文件
我试过这个但不工作!可变数据为空!我使用带有 ARC 的 iOS 5。谢谢你的帮助!
更新
我用这段代码解决了,我已经将委托设置为 self 并且一切正常。只是我不明白是否以这种方式和使用 ARC 我需要清除代表
- (void)dealloc
{
[request clearDelegatesAndCancel];
}
感谢大家的帮助!!
更新
-(void)downloadFile: (NSString*) file {
NSString* urlFilePdf = [NSString stringWithFormat:@"http://www.mywebsite.com/%@",file];
myFileName = file;
NSURL *url = [NSURL URLWithString:urlFilePdf];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:file];
progressAlert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"DOWNLOADFILE",nil) message:nil delegate:self cancelButtonTitle:nil otherButtonTitles: nil];
progressView = [[UIProgressView alloc] initWithFrame:CGRectMake(30.0f, 80.0f, 225.0f, 90.0f)];
[progressAlert addSubview:progressView];
[progressView setProgressViewStyle: UIProgressViewStyleDefault];
lblTotal = [[UILabel alloc] initWithFrame:CGRectMake(5, 50, 273, 20)];
[lblTotal setTextAlignment:UITextAlignmentCenter];
[lblTotal setFont:[UIFont fontWithName:@"HelveticaNeue-Medium" size:14.0]];
[lblTotal setTextColor:[UIColor whiteColor]];
[lblTotal setBackgroundColor:[UIColor clearColor]];
[progressAlert addSubview:lblTotal];
requestFile = [ASIHTTPRequest requestWithURL:url];
[requestFile setDelegate:self];
[requestFile setDownloadDestinationPath:filePath];
[requestFile setDownloadProgressDelegate:self];
[requestFile setShowAccurateProgress:YES];
[progressAlert show];
[requestFile startAsynchronous];
}
- (void)request:(ASIHTTPRequest *)request incrementDownloadSizeBy:(long long)newLength
{
NSLog(@"%@",[NSString stringWithFormat:@"incrementDownloadSizeBy %quKb", newLength/1024]);
}
- (void)request:(ASIHTTPRequest *)request didReceiveBytes:(long long)bytes
{
NSLog(@"%@",[NSString stringWithFormat:@"didReceiveBytes %quKb", bytes/1024]);
currentLength += bytes;
[lblTotal setText:[NSString stringWithFormat:@"%quKb/%@",currentLength/1024,self.TotalFileDimension]];
}
- (void)setProgress:(float)newProgress {
NSLog(@"%f",newProgress);
progressView.progress = newProgress;
}
-(void) requestFinished:(ASIHTTPRequest *)request
{
// code ...
}
-(void) requestFailed:(ASIHTTPRequest *)request
{
// code ...
}
- (void)dealloc
{
[request clearDelegatesAndCancel];
}