redraw view off screen - contains picker view and tool bar

问题

Im trying to draw/place a view (which contains a picker view and a toolbar offscreen). On launch the View is still on the screen despite changing its coordinates in viewDidLoad.

 self.pickerViewContainer.frame = CGRectMake(0, 722, 320, 207);

Im using the storyboard. I have created the view in the storyboard, visible in the view controller. I thought i could redraw it off screen as per coordinates above.

回答1:

When you use Auto layout write your view's frame related code in viewDidLayoutSubviews
Here is a solution

-(void) viewDidLayoutSubviews
{
self.pickerViewContainer.frame = CGRectMake(0, 722, 320, 207);
}

来源：https://stackoverflow.com/questions/19515924/redraw-view-off-screen-contains-picker-view-and-tool-bar