Question

i use two blocks to draw some buttons on my subview dynamically. One calculates frames for Portrait mode and the other does for Landscape. It works well but when i rotate, it writes over the old ones. Hence, some of my buttons come twice. Here is my code of detecting the oriantation:

//i have defined blocks in viewDidLoad: and everything is ok till here
    - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
    {
        if(interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
        {
            dispatch_async(dispatch_get_main_queue(), PortraitBlock);        
        }       
        else 
        { 
            dispatch_async(dispatch_get_main_queue(), LandscapeBlock);
               }
        return (interfaceOrientation == UIInterfaceOrientationLandscapeRight || 
                interfaceOrientation == UIInterfaceOrientationPortrait || 
                interfaceOrientation == UIInterfaceOrientationLandscapeLeft ||
                interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown);
    }

Now, how can i clean the view i add the buttons on?

Note: I add buttons on a UIView object, and that object too is on a UIScrollView object

Answer 1

hi,.,

Try below code with this all your button which you alloc on the view
will be remove.

for(UIButton *view in yourview.subviews)
    {
        [view removeFromSuperview];
    }