ASIHTTPRequest实现断点下载
- (IBAction)URLFetchWithProgress:(id)sender
{
[startButton setTitle:@"Stop" forState:UIControlStateNormal];
[startButton addTarget:self action:@selector(stopURLFetchWithProgress:)forControlEvents:UIControlEventTouchUpInside];
NSString*tempFile = [[[[NSBundle mainBundle] bundlePath]stringByDeletingLastPathComponent]stringByAppendingPathComponent:@"MemexTrails_1.0b1.zip.download"];
if ([[NSFileManager defaultManager] fileExistsAtPath:tempFile]) {
[[NSFileManager defaultManager] removeItemAtPath:tempFile error:nil];
}
[self resumeURLFetchWithProgress:self];
}
- (IBAction)stopURLFetchWithProgress:(id)sender
{
networkQueue = [[ASINetworkQueue alloc] init];
timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:selfselector:@selector(updateBandwidthUsageIndicator) userInfo:nil repeats:YES];
timer = nil;
[startButton setTitle:@"Stop" forState:UIControlStateNormal];
[startButton addTarget:self action:@selector(URLFetchWithProgress:)forControlEvents:UIControlEventTouchUpInside];
[networkQueue cancelAllOperations];
[resumeButton setEnabled:YES];
}
- (IBAction)resumeURLFetchWithProgress:(id)sender
{
[resumeButton setEnabled:NO];
[startButton setTitle:@"Start" forState:UIControlStateNormal];
[startButton addTarget:self action:@selector(stopURLFetchWithProgress:)forControlEvents:UIControlEventTouchUpInside];
[networkQueue cancelAllOperations];
[networkQueue setShowAccurateProgress:YES];
[networkQueue setDownloadProgressDelegate:progressIndicator];
[networkQueue setDelegate:self];
[networkQueue setRequestDidFinishSelector:@selector(URLFetchWithProgressComplete:)];
ASIHTTPRequest*request=[[[ASIHTTPRequest alloc] initWithURL:[NSURLURLWithString:@"http://9991.net/blog/mp3/2.mp3"]] autorelease];
[request setDownloadDestinationPath:[[[[NSBundle mainBundle] bundlePath]
stringByDeletingLastPathComponent] stringByAppendingPathComponent:@"MemexTrails_1.0b1.mp3"]];
[request setTemporaryFileDownloadPath:[[[[NSBundle mainBundle] bundlePath]stringByDeletingLastPathComponent]stringByAppendingPathComponent:@"MemexTrails_1.0b1.zip.down"]];
[request setAllowResumeForFileDownloads:YES];
[networkQueue addOperation:request];
[networkQueue go];
}
- (void)URLFetchWithProgressComplete:(ASIHTTPRequest *)request
{
if ([request error]) {
fileLocation.text=[NSString stringWithFormat:@"An error occurred:%@",[[[requesterror] userInfo] objectForKey:@"Title"]];
} else {
fileLocation.text=[NSString stringWithFormat:@"File downloaded to %@",[requestdownloadDestinationPath]];
}
[startButton setTitle:@"Start" forState:UIControlStateNormal];
[startButton addTarget:self action:@selector(URLFetchWithProgress:)forControlEvents:UIControlEventTouchUpInside];
}
- (IBAction)throttleBandwidth:(id)sender
{
if ([(UIButton *)sender state] ==YES) {
[ASIHTTPRequest setMaxBandwidthPerSecond:ASIWWANBandwidthThrottleAmount];
} else {
[ASIHTTPRequest setMaxBandwidthPerSecond:];
}
}