当我按下另一个时，我有一个UIViewControllerwith which 。它从屏幕底部正确滑动，但我希望它的高度是屏幕高度的一半并保持在屏幕底部。TableViewButtonView
我怎样才能得到这个？
这是我的代码：
CupsViewController
这是Button按下显示时的代码TableView。
//DirectionViewController is the one that contains TableView
DirectionViewController *directionController = [self.storyboard instantiateViewControllerWithIdentifier:@"directionsView"];
// Position the options at bottom of screen
CGRect optionsFrame = directionController.view.frame;
optionsFrame.origin.x = 0;
optionsFrame.size.width = 320;
optionsFrame.origin.y = 423;
// For the animation, move the view up by its own height.
optionsFrame.origin.y += optionsFrame.size.height;
directionController.view.frame = optionsFrame;
[UIView beginAnimations:nil context:nil];
optionsFrame.origin.y -= optionsFrame.size.height;
directionController.view.frame = optionsFrame;
[UIView commitAnimations];
[self.navigationController pushViewController:directionController animated:YES];