how to use ProgressView in xcode for show download's status - ios

Question

I create one application that download file from url with any size.I have one button and one progress view in my page . I want when click on button downloaded file and show me download's status in progress view.
I can download any file with this code but I dont know how to use progress view with this code:
- (IBAction)Download:(id)sender
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSLog(#"Downloading Started");
NSString *urlToDownload = #"http://192.168.1.100/emma/Adele%20-%20Someone%20Like%20You%20(MTV%20Video%20Music%20Awards%202011)%20HD%20Live.mkv";
NSURL *url = [NSURL URLWithString:urlToDownload];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"filename.mkv"];
dispatch_async(dispatch_get_main_queue(), ^{
[urlData writeToFile:filePath atomically:YES];
NSLog(#"File Saved !");
});
x = 1;
NSLog(#"x : %d",x);
}
});
}
please guide me about it.

Answer 1

define NSTimer *timer in your .h file and set your ProgressView in your .xib
- (IBAction)Download:(id)sender
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSLog(#"Downloading Started");
NSString *urlToDownload = #"http://192.168.1.100/emma/Adele%20-%20Someone%20Like%20You%20(MTV%20Video%20Music%20Awards%202011)%20HD%20Live.mkv";
NSURL *url = [NSURL URLWithString:urlToDownload];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"filename.mkv"];
timer = [NSTimer timerWithTimeInterval:0.5 target:self selector:#selector(updateProgressView) userInfo:nil repeats:YES];
[timer fire];
dispatch_async(dispatch_get_main_queue(), ^{
[urlData writeToFile:filePath atomically:YES];
NSLog(#"File Saved !");
});
x = 1;
NSLog(#"x : %d",x);
}
});
}
and add this method
- (void) updateProgressView{
NSString *urlToDownload = #"http://192.168.1.100/emma/Adele%20-%20Someone%20Like%20You%20(MTV%20Video%20Music%20Awards%202011)%20HD%20Live.mkv";
NSURL *url = [NSURL URLWithString:urlToDownload];
NSData *urlData = [NSData dataWithContentsOfURL:url];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"filename.mkv"];
NSData *writtenData = [NSData dataWithContentsOfFile:filePath];
float progress = [writtenData length]/(float)[urlData length];
[progressView setProgress:progress];
if (progress == 1.0){
[timer invalidate];
}
}