UIButton Transition Curl Up問題

Question

基本上，我正在嘗試UIViewAnimationTransitionCurlUp一個UIButton。動畫 完美地工作，但按鈕停留在那裏。

即按鈕捲起，但仍然存在按鈕的另一個實例。

我的代碼如下：

[UIButton beginAnimations:nil context:nil]; 
[UIButton setAnimationDuration:0.5]; 
[UIButton setAnimationBeginsFromCurrentState:YES]; 
[UIButton setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES]; 
[UIButton commitAnimations]; 

Answer 1

設置新的按鈕狀態+beginAnimations和+commitAnimations之間的呼叫。下面的代碼隱藏點擊按鈕與捲曲動畫：

- (void)btnClick:(id)sender{ 
    [UIButton beginAnimations:nil context:nil]; 
    [UIButton setAnimationDuration:0.5]; 
    [UIButton setAnimationBeginsFromCurrentState:YES]; 
    [UIButton setAnimationTransition:UIViewAnimationTransitionCurlUp 
            forView:(UIView*)sender cache:YES]; 
    ((UIView*)sender).hidden = YES; 

    [UIButton commitAnimations]; 
} 

Answer 2

你要刪除的按鈕（隱藏按鈕）當動畫ends.This應

- (void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context 

完成應在動畫設置代碼

，如：

[UIButton setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)]; 

希望這會有所幫助。

感謝，

Madhup

Answer 3

好吧，我大概選中此之前，我投你了......

按鈕是仍然動畫後不dissapearing結束:(

我的代碼是現在：

[UIButton beginAnimations:@"welcomeAnimation" context:nil]; 
[UIButton setAnimationDuration:0.5]; 
[UIButton setAnimationDidStopSelector:@selector(welcomeAnimationDidStop:finished:context:)]; 
[UIButton setAnimationBeginsFromCurrentState:YES]; 
[UIButton setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES]; 
[UIButton commitAnimations]; 

和我的方法：

-(void)welcomeAnimationDidStop:(NSString *)animationID finished:(BOOL *)finished context:(void *)context { 
    welcomeButton.hidden = YES; 
}