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POSwitch from Synchronous request to Asynchronous request with image upload?
 

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  1. POSwitch from Synchronous request to Asynchronous request with image upload?
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    <p>I need some help, i have been searching around and cant find the correct answer im looking for.</p> <p>I am uploading images and videos to my server via php, When im uploading the video or image, i want to be able to show a progress view, i have been told that the only way to do this is to use asynchronous instead of synchronous. I have been looking at ways to set up this, but cant really seem to find a good tutorial that will help me with what im trying to accomplish.</p> <p>Here is some code:</p> <pre><code>- (void)post:(NSData *)fileData { NSMutableArray *array = [[NSMutableArray alloc]initWithContentsOfFile:[self saveUserLogin]]; int test; NSString *string = [array objectAtIndex:3]; test = [string intValue]; test++; NSData *videoData = fileData; NSString *urlString = [[NSString alloc]initWithFormat:@"http://www.site.com/members/uploadMovie.php?&amp;username=%@", [array objectAtIndex:0]]; NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; [request setURL:[NSURL URLWithString:urlString]]; [request setHTTPMethod:@"POST"]; NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"]; NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary]; [request addValue:contentType forHTTPHeaderField:@"Content-Type"]; NSMutableData *body = [NSMutableData data]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; NSString *postName = [[NSString alloc]initWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"vid%i.mov\"\r\n", test]; [body appendData:[[NSString stringWithString:postName] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[NSData dataWithData:videoData]]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [request setHTTPBody:body]; NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; NSLog(@"%@", returnString); NSArray *values = [[NSArray alloc] initWithObjects: [array objectAtIndex:0],[array objectAtIndex:1], [array objectAtIndex:2], [NSString stringWithFormat:@"%i", test], nil]; [values writeToFile:[self saveUserLogin] atomically:YES]; [self.delegate didFinishController:self]; } </code></pre> <p>this is some code that im using to send a video. filedata is a paramater being passed in with the video data. I want to animate a UIProgressview for the upload progress. I have also heard that apple likes people to use asynchronous anyways. If someone could please help me set up asynchronous instead of what i have, i would be really grateful. Please be specific if you reply, like to what i need to import what delegates, methods. etc.</p> <p>Thank you very much :)</p> <p>EDIT:</p> <p>This is what it looks like now:</p> <pre><code>- (void)post:(NSData *)fileData { NSMutableArray *array = [[NSMutableArray alloc]initWithContentsOfFile:[self saveUserLogin]]; int test; NSString *string = [array objectAtIndex:3]; test = [string intValue]; test++; NSData *videoData = fileData; NSString *urlString = [[NSString alloc]initWithFormat:@"http://www.site.com/members/uploadMovie.php?&amp;username=%@", [array objectAtIndex:0]]; NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:[NSURL URLWithString:urlString] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:30]; NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"]; NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary]; [request addValue:contentType forHTTPHeaderField:@"Content-Type"]; NSMutableData *body = [NSMutableData data]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; NSString *postName = [[NSString alloc]initWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"vid%i.mov\"\r\n", test]; [body appendData:[[NSString stringWithString:postName] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[NSData dataWithData:videoData]]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [request setHTTPBody:body]; //NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; //NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:request delegate:self]; if (connection) { NSLog(@"connected"); responceData = [NSMutableData data]; } else{ NSLog(@"error"); } // NSLog(@"%@", returnString); NSArray *values = [[NSArray alloc] initWithObjects: [array objectAtIndex:0],[array objectAtIndex:1], [array objectAtIndex:2], [NSString stringWithFormat:@"%i", test], nil]; [values writeToFile:[self saveUserLogin] atomically:YES]; // [self.delegate didFinishController:self]; } - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [responceData appendData:data]; } - (void) connectionDidFinishLoading:(NSURLConnection *)connection { NSString* responseString = [[NSString alloc] initWithData:responceData encoding:NSUTF8StringEncoding]; NSLog(@"result: %@", responseString); } - (void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { NSLog(@"error - read error object for details"); } </code></pre>
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