的iOS 4.2：翻轉圖像使用塊動畫

我有這一塊代碼的IM我的應用程序：的iOS 4.2：翻轉圖像使用塊動畫

[UIView beginAnimations:nil context:NULL]; 
[UIView setAnimationDuration:1]; 
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:imgView cache:YES]; 
    imgView.image = img2; 
[UIView commitAnimations];

但使用這種方法在iOS 4.0的勸阻，後來，我應該使用transitionWithView:duration:options:animations:completion:

我不能讓這個工作正常。誰能幫我？ Thx！

來源

2010-09-17 FransGuelinckx

[UIView transitionWithView:imgView // use the forView: argument 
        duration:1   // use the setAnimationDuration: argument 
        options:UIViewAnimationOptionTransitionFlipFromLeft 
          // check UIViewAnimationOptions for what options you can use 
       animations:^{   // put the animation block here 
           imgView.image = img2; 
          } 
       completion:NULL];  // nothing to do after animation ends.

來源

2010-09-18 08:03:31 kennytm

非常感謝！奇蹟般有效。 – FransGuelinckx 2010-09-19 10:35:17

@KennyTM：你能夠澄清使用[NULL vs nil for blocks]（http://stackoverflow.com/questions/5766208/which-is-the-right-one-nil-or-null-to-mark-無目標c塊）？ – penfold 2011-10-02 08:12:23

@FransGuelinckx請將此答案標記爲已接受，如果它解決了您的問題。 – 2011-12-20 13:41:42

我做了這個功能，根據您的代碼：

- (void)flipCurrentView:(UIView*)oldView withNewView:(UIView*)newView reverse:(BOOL)reverse 
{ 
    newView.alpha = 0; 
    [UIView transitionWithView:newView 
         duration:1  
         options:UIViewAnimationOptionTransitionFlipFromLeft 
        animations:^{   
         oldView.alpha = 0; 
         newView.alpha = 1; 
        } 
        completion:^(BOOL finished){ 
         if(reverse){ 
          [self flipCurrentView:newView withNewView:oldView reverse:NO]; 
         } 
         finished = YES; 
        }]; 
}

來源

2011-12-20 11:26:05

的iOS 4.2：翻轉圖像使用塊動畫

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