Download video from video url - iphone

Question

I want to download the video from the url. I have the video url but don't know how to download it.
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
strFileName = #"MyVideo";
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:#"http://www.youtube.com/v/P9MeXRzKUuA?version=3&f=videos&app=youtube_gdata"]]; //strFileURL is url of your video/image
NSURLConnection *conection = [[[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES] autorelease];
[conection start];
[request release];
strFilePath = [[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:strFileName] retain];
NSLog(#"file path = %#",strFilePath);
}
- (void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
// create
NSLog(#"file path = %#",strFilePath);
if (![[NSFileManager defaultManager] fileExistsAtPath:strFilePath]) {
[[NSFileManager defaultManager] createFileAtPath:strFilePath contents:nil attributes:nil];
}
file = [[NSFileHandle fileHandleForUpdatingAtPath:strFilePath] retain];// read more about file handle
if (file) {
[file seekToEndOfFile];
}
NSLog(#"response received");
[responseData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)receivedata
{
//write each data received
if( receivedata != nil){
if (file) {
[file seekToEndOfFile];
}
[file writeData:receivedata];
NSLog(#"data received");
}
[responseData appendData:receivedata];
}
- (void)connectionDidFinishLoading:(NSURLConnection*)theConnection {
//close file after finish getting data;
NSLog(#"response = %#",[[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]);
[file closeFile];
NSLog(#"file closed");
NSURL *fileURL = [NSURL fileURLWithPath:strFilePath];
NSLog(#"fileurl = %#",fileURL);
[webView loadRequest:[NSURLRequest requestWithURL:fileURL]];
}
In the connectiondidfinishedloading method when I print the response it is null.
Please help me with this

Answer 1

you forgot to initialize the responseData variable. Please do so.