Question

I wanted to rotate a UIView on its horizontal axis for 360 degrees and then refresh the content in the view. I was looking out for solutions on this. Found a couple here n there. This is what I came out with.

    [UIView animateWithDuration:1 delay:0 options:UIViewAnimationOptionTransitionNone animations:^{
        self.tableView.layer.transform = CATransform3DMakeRotation(M_PI,1.0,0.0,0.0);
    } completion:^(BOOL finished){
        NSLog(@"Finished first pi");
        [UIView animateWithDuration:1 delay:0 options:UIViewAnimationOptionTransitionNone animations:^{
            self.tableView.layer.transform = CATransform3DMakeRotation(M_PI,1.0,0.0,0.0);
        }  completion:^(BOOL finished) {
            NSLog(@"Finished second pi");

        }];           

    }];

This flips the view but only by 180 degrees. I want it to flip one more time so that I can see the view normally..

Both my NSLogs are displayed one after the other. I am sure I am missing something here. ANy help would be helpful..

Thanks

Answer 1

In your completion block try concatenating the new transform with the current transform.

self.tableView.layer.transform = CATransform3DConcat(self.tableView.layer.transform, CATransform3DMakeRotation(M_PI,1.0,0.0,0.0));