ios - 如何将 UIView 转换为横向和全屏？

Question

我想将 UIView 从纵向模式转换为横向模式并使其全屏显示。我该怎么做？

CGFloat degrees = 90;
CGAffineTransform transform = CGAffineTransformMakeRotation((M_PI * degrees / 180.0f));

[UIView animateWithDuration:0.3f animations:^{
    transitionView.transform = transform;
    // How to set the origin to make it fullscreen?
} completion:^(BOOL finished) {
}];

Answer 1

1. 通过交换高度和宽度来改变 View 框架
2. 旋转-90度(逆时针)

3. 平移以匹配新原点(因为旋转是围绕 View 中心点执行的)

   UIView.animate(withDuration: 0.3) {
       self.frame = CGRect(origin: .zero, size: CGSize(width: UIScreen.main.bounds.height,
                                                               height: UIScreen.main.bounds.width))
   
       let rotate = CGAffineTransform(rotationAngle: -.pi / 2)
       let center = self.view.center
       let translate = CGAffineTransform(translationX: center.x + center.y - self.bounds.width,
                                         y: center.y - center.x)
       self.transform = translate.concatenating(rotate)
   }