ASIHTTPRequest实现断点下载
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- (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:];
}
}
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