setAnimationDidStopSelector：沒有被調用

Question

我知道這個問題被問到很多，但我已經嘗試了所有其他答案，我無法弄清楚爲什麼動畫停止選擇器沒有被調用。下面是代碼：

-(void) moveImage:(UIImageView *)image duration:(NSTimeInterval)duration curve:(int)curve x:(CGFloat)x y:(CGFloat)y annKey:(NSString *) annKey{ 

[UIView setAnimationDelegate:self]; 
[UIView setAnimationDuration:duration]; 
[UIView setAnimationCurve:curve]; 
[UIView setAnimationBeginsFromCurrentState:YES]; 
[UIView setAnimationDidStopSelector:@selector(animationFinished:finished:context:)]; 
CGAffineTransform transform = CGAffineTransformMakeTranslation(x, y); 
image.transform = transform; 
[UIView beginAnimations:annKey context:NULL]; 
[UIView commitAnimations]; 

}

這是一個被髮送的所有正確的參數主要動畫功能。

- (void)animationFinished:(NSString *)animationID finished:(BOOL)finished context:(void *)context 
{ 
if ([animationID isEqualToString:@"Burn"]) 
{ 
    NSLog(@"Animation: %@ has finished.",animationID); 
} 

NSLog(@"This does not get called, why not?"); 
} 

我的NSLogs都沒有顯示文本。我究竟做錯了什麼？

Answer 1

你需要做壽 -

[UIView beginAnimations:annKey context:NULL]; 
[UIView setAnimationDelegate:self]; 
[UIView setAnimationDidStopSelector:@selector(animationFinished:finished:context:)]; 

// Now define rest. 
[UIView setAnimationDuration:duration]; 
[UIView setAnimationCurve:curve]; 
[UIView setAnimationBeginsFromCurrentState:YES]; 
CGAffineTransform transform = CGAffineTransformMakeTranslation(x, y); 
image.transform = transform; 

[UIView commitAnimations]; 

Answer 2

不知道是什麼問題，但你真的不應該使用beginAnimations/commitAnimations來。相反，使用塊動畫。您直接在通話的完成部分定義完成代碼。

[UIView animateWithDuration:2.0 
         delay:0.0 
        options:UIViewAnimationOptionCurveEaseOut 
       animations:^{ 
        // animation code 
       } 
       completion:^(BOOL finished){ 
        // completion code 
       }];