Question

I have a problem when trying to manually rotate a view. For example I have a view controller running in landscape, and I have a button on that view. I would like to tap that button to force the view rotate to portrait (upside down portrait). I search but can not find the answer.

Thank for your help

Answer 1

You could try this:

- (void)buttonPressed {

    // check current orientation
    if ([[UIApplication sharedApplication] statusBarOrientation] != UIDeviceOrientationLandscapeLeft) {

        // no, the orientation is wrong, we must rotate the UI
        self.view.userInteractionEnabled = NO;

        // setup status bar
        [[UIApplication sharedApplication] setStatusBarOrientation:UIDeviceOrientationLandscapeLeft animated:NO];
        // rotate main view, in this sample the view of navigation controller is the root view in main window
        [self.view setTransform: CGAffineTransformMakeRotation(M_PI / 2)];
        // set size of view
        [self.view setFrame:CGRectMake(0, 0, 748, 1024)];

    }

}