CODEWITHSUNDEEP
iosasynchronousuitableviewuiactivityindicatorview
SimplyKiwi
SimplyKiwi

Reputation: 12444

UIActivityIndicatorView during dispatch_async?

In my app I just implement a dispatch_async block that will grab images from a NSDictionary and then eventually when the image is ready, set it to a UITableViewCell UIImageView. What I want to do is make a UIActivityIndicatorAppear in the middle of the UITableViewCell's UIImageView while the dispatch_async is occurring.

This is my code for the dispatch_async block:

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0), ^(void) {
        NSData *data = [myDictionary objectForKey:@"myKey"];
        UIImage *cellImage = [UIImage imageWithData:data];

        //we get the main thread because drawing must be done in the main thread always
        dispatch_async(dispatch_get_main_queue(),^ {
            [cell.imageView setImage:cellImage];
        } );

    });

Anyway is this possible? And if so, how?

Thanks!

Upvotes: 0

Views: 980

Answers (1)

Mundi
Mundi

Reputation: 80265

Show the progress indicator before your dispatch_async and remove or hide it your main queue block where you set the image.

Upvotes: 1

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