How to store a video/image file from a server in iPhone

Question

I want to send a video/image from one iPhone to another iPhone via a Server. I have successfully sent the file to the server using HTTP POST. But the problem is I want to re

Answer 1

You use Post to post data to server successfully. Right? Now you can make an API for downloading image/video. When you finish getting data, put it in document folder of your app. About API, for simplest, just create a link to that file, then use NSURLConnection to download.

Create a URL connection to download:

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:strFileUrl]]; //strFileURL is url of your video/image
NSURLConnection *conection = [[[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:NO] autorelease];
[conec start];
[request release];

Get path of file to save data:

strFilePath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:strFileName];

Your class must adopt 3 methods of NSURLConnectionDelegate protocol: (please read about Protocol and Delegate)

- (void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    // create 
    [[NSFileManager defaultManager] createFileAtPath:strFilePath contents:nil attributes:nil];
    file = [[NSFileHandle fileHandleForUpdatingAtPath:strFilePath] retain];// read more about file handle
    if (file)   {
        [file seekToEndOfFile];
    }
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)receivedata
{    
    //write each data received
    if( receivedata != nil){
        if (file)  { 
            [file seekToEndOfFile];
        } 
        [file writeData:receivedata]; 
    }
}

- (void)connectionDidFinishLoading:(NSURLConnection*)theConnection {
    //close file after finish getting data;
    [file closeFile];
}

- (void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    //do something when downloading failed
}

If you want to review you file, use a UIWebview to load it:

NSURL *fileURL = [NSURL fileURLWithPath:strFilePath];
[wvReview loadRequest:[NSURLRequest requestWithURL:fileURL]];