如何从右上角动画/旋转UIView 90度？

Question

我一直在寻找几个小时试图找到一种从右上角动画/旋转UIView 90度的方法。

效果几乎应该像屏幕顶部的摆动门一样。

希望有人可以帮忙！

Answer 1

所以在我按下回车后，我突然把两个和两个放在一起，并认为节拍器样品有点像摆动门，这让我有了一些其他可能性。

这是我的解决方案：

- (void)viewDidLoad {
    [super viewDidLoad];

    // Set the anchor point and center so the view swings from the upper right
    swingView.layer.anchorPoint = CGPointMake(1.0, 0.0);
    swingView.center = CGPointMake(CGRectGetWidth(self.view.bounds), 0.0);

    // Rotate 90 degrees to hide it off screen
    CGAffineTransform rotationTransform = CGAffineTransformIdentity;
    rotationTransform = CGAffineTransformRotate(rotationTransform, DegreesToRadians(90));
    swingView.transform = rotationTransform;
}

...

- (void)animateSwing {

    CGAffineTransform swingTransform = CGAffineTransformIdentity;
    swingTransform = CGAffineTransformRotate(swingTransform, DegreesToRadians(0));

    [UIView beginAnimations:@"swing" context:swingView];
    [UIView setAnimationDuration:0.25];

    swingView.transform = swingTransform;

    [UIView commitAnimations];
}

希望这也有助于其他人！

Answer 2

您应该尝试将图层的锚点设置为（0,1），然后为图层设置动画。

Answer 3

您应该尝试以下代码：

-(void)doRotationView{
[UIView beginAnimations:@"flipping view" context:nil];  
    [UIView setAnimationDuration:1];    
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];   
    [UIView setAnimationTransition: UIViewAnimationTransitionFlipFromLeft    
                           forView:self cache:YES];
    if (flagFront == 1) {
        flagFront =0;
        [self.viewSecond setHidden:NO];
        [self.viewFirst setHidden:YES];
    }
    else{
        flagFront =1;
        [self.viewSecond setHidden:YES];
        [self.viewFirst setHidden:NO];        
    }
    [UIView commitAnimations];

}