將UIView動畫化為CGPoint

Question

我想知道如何將UIView動畫化為特定的CGPoint。 以下是到目前為止我所擁有的（在當前狀態下不起作用）：

#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

在開始之后但在提交之前，請更改UI視圖上的值。

Answer 2

嘗試：

#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

如果您的目標是10.5或更高，則可以通過添加到NSView的動畫代理來使用Core Animation。 嘗試

[[someView animator] setFrame: someNewFrame];