动画UIView到CGPoint

Question

我想知道如何将UIView设置为特定CGPoint的动画。以下是我到目前为止（它在当前状态下不起作用）：

#define MOVE_ANIMATION_DURATION_SECONDS 2

NSValue *pointValue = [[NSValue valueWithCGPoint:point] retain];
[UIView beginAnimations:nil context:pointValue];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:MOVE_ANIMATION_DURATION_SECONDS];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)];
[UIView commitAnimations];

Answer 1

在开始之后，但在提交之前，更改UI视图上的值。

Answer 2

尝试：

#define MOVE_ANIMATION_DURATION_SECONDS 2

[UIView beginAnimations:nil context:pointValue];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:MOVE_ANIMATION_DURATION_SECONDS];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)];

CGRect frame = myUIViewObject.frame;
frame.origin = point;
myUIViewObject.frame = frame;

[UIView commitAnimations];

Answer 3

如果您的目标是10.5或更高版本，则可以通过添加到NSView的动画代理使用Core Animation。尝试

[[someView animator] setFrame: someNewFrame];