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这是我在这里的第一个问题，我是 iOS 编程的新手。

我在网上搜索了很多技巧，其中有很多来自 stackoverflow 的提示。我已经搜索了 Xcode 帮助并观看了视频等，但我似乎仍然无法让它工作。

我有一个包含大约 6 个不同 UIView 的视图。其中一个 UIView 是位于垂直面板的另一个 UIView 上方的箭头图像。箭头图像正在接收触摸，然后触发两种方法

一种方法将面板和箭头向右移动。另一种方法是随着移动旋转箭头。

我试过CATransform3DMakeRotation,CGAffineTransformMakeRotation和CATransform3DMakeRotation，但是我不能让箭头随着箭头的移动和面板的移动而旋转。

我能达到的最好效果是使用CATransform3DMakeRotation，但这只是翻转箭头，并且不会为旋转设置动画。

其他人将旋转箭头，但不允许面板移动。

这是我旋转箭头的代码。如你看到的。我尝试过的很多已注释掉的项目。

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [touches anyObject];
    CGPoint touchLocation = [touch locationInView:self.view];

    CGRect bugRect = [[[RightArrow layer] presentationLayer] frame];
    if (CGRectContainsPoint(bugRect, touchLocation)) {
        [self RotateArrowOFF];
        [self MovePanels];
        NSLog(@"Arrow tapped!");
    } else {
        NSLog(@"Arrow not tapped.");
        return;
    }

}

-(IBAction)MoveLeftColorPanel
{
    NSLog(@"Right Arrow Center %@", NSStringFromCGPoint(RightArrow.center));

}
- (void)MovePanels
{


    if (_PanelsAreOffScreen == NO) { 

        [UIView animateWithDuration:0.3f delay:0 options:UIViewAnimationOptionCurveEaseOut | UIViewAnimationOptionLayoutSubviews animations:^{
            RightPanel.center = CGPointMake(1065, 384);
        }
                         completion:^(BOOL finished) {
                             NSLog(@"Animation 1 complete");
                             _PanelsAreMoving = YES;

                         }];
        [UIView animateWithDuration:0.3f delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
            LeftPanel.center = CGPointMake(-50, 384);
        }
                         completion:^(BOOL finished) {
                             NSLog(@"Animation 2 complete");
                             _PanelsAreMoving = YES;

                         }];

        [UIView animateWithDuration:0.3f delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
            RightArrow.center = CGPointMake(1010, 82);
        }
                         completion:^(BOOL finished) {
                             NSLog(@"Animation 3 complete");
                             _PanelsAreMoving = YES;

                         }];

        _PanelsAreOffScreen = YES;
    }
    else { 
        [UIView animateWithDuration:0.3f delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
            RightPanel.center = CGPointMake(914, 384);
        }
                         completion:^(BOOL finished) {
                             NSLog(@"Animation 5 complete");
                         }];
        [UIView animateWithDuration:0.3f delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
            LeftPanel.center = CGPointMake(108, 384);
        }
                         completion:^(BOOL finished) {
                             NSLog(@"Animation 6 complete");
                         }];
        [UIView animateWithDuration:0.3f delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
            RightArrow.center = CGPointMake(836, 82);
        }
                         completion:^(BOOL finished) {
                             NSLog(@"Animation 7 complete");
                         }];

        _PanelsAreOffScreen = NO;
    }

}

- (void)RotateArrowOFF//:(CGRect)rect
{

    RightArrow.layer.anchorPoint = CGPointMake(0.06, 0.5);

    if (_PanelsAreOffScreen == NO)
    {
        [CATransaction begin];
        [CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions];
        [CATransaction setValue:[NSNumber numberWithFloat:2.0f] forKey:kCATransactionAnimationDuration];
        CATransform3D RotateArrow = RightArrow.layer.transform;
        RotateArrow = CATransform3DMakeRotation(M_PI,0.0,0.0,1.0);
        RightArrow.layer.transform = RotateArrow;
    }
    else
    {
        [CATransaction begin];
        [CATransaction setValue:[NSNumber numberWithFloat:2.0f] forKey:kCATransactionAnimationDuration];

        CATransform3D RotateArrow = RightArrow.layer.transform;
        RotateArrow = CATransform3DMakeRotation(0,0.0f,0.0f,1.0f);
        RightArrow.layer.transform = RotateArrow;

        [CATransaction commit];
    }
   }
4

1 回答 1

0 
    RightArrow.layer.transform = RotateArrow;

所以你的问题是，为什么这里没有任何动画发生？问题是 RightArrow 是一个 UIView，RightArrow.layer它的“底层”也是。您不能仅通过分配给视图的属性来隐式地为视图的底层设置动画。你必须要么使用 UIView 动画（使用视图的transform属性），要么你必须直接使用核心动画（CABasicAnimation）。

这是一个例子（来自我的书）：

[CATransaction setDisableActions:YES];
v.layer.transform = CATransform3DRotate(v.layer.transform, M_PI/4.0, 0, 0, 1);
CABasicAnimation* anim = [CABasicAnimation animationWithKeyPath:@"transform"];
anim.duration = 0.8;
[v.layer addAnimation:anim forKey:nil];
于 2013-03-27T03:26:15.597 回答