iOS：爲什麼對象在動畫合成之後轉到開始位置

Question

））我想動畫UIButton（兩個並行動畫：改變圖像和移動），如下所示，動畫按鈕應該移動後，但在完成動畫按鈕後轉向開始位置。請幫助解決它！提前致謝！

- (IBAction)bugOneTapped:(id)sender 
{ 
    [UIView animateWithDuration:1.0 
       animations:^{ 
        self.bugOneButton.imageView.animationImages = 
        [NSArray arrayWithObjects:[UIImage imageNamed:@"bugOne3"],[UIImage imageNamed:@"bugOne2"],[UIImage imageNamed:@"bugOne1"],[UIImage imageNamed:@"bugOne2"],[UIImage imageNamed:@"bugOne3"],[UIImage imageNamed:@"bugOne4"],[UIImage imageNamed:@"bugOne5"],[UIImage imageNamed:@"bugOne4"],nil]; 
        self.bugOneButton.imageView.animationDuration = 0.3; 
        [self.bugOneButton.imageView startAnimating]; 


        self.bugOneButton.center = CGPointMake(self.bugOnePositionX, self.bugOneButton.center.y - 50); 
        self.bugOnePositionY = self.bugOnePositionY - 50; 


       }completion:^(BOOL finished) { 
        [self.bugOneButton.imageView stopAnimating]; 
       }]; 

self.bugOneButton.center = CGPointMake(self.bugOnePositionX, self.bugOnePositionY); 
} 

Answer 1

在你的代碼刪除以下行

self.bugOneButton.center = CGPointMake(self.bugOnePositionX, self.bugOnePositionY); 

它將修正..

Answer 2

@Genie誠徵說的很對，刪除代碼

self.bugOneButton.center = CGPointMake(self.bugOnePositionX, self.bugOnePositionY) 

這將重置按鈕位置！

Answer 3

re移動此兩個線路

- (IBAction)bugOneTapped:(id)sender 
{ 
    [UIView animateWithDuration:1.0 
       animations:^{ 
        self.bugOneButton.imageView.animationImages = 
        [NSArray arrayWithObjects:[UIImage imageNamed:@"bugOne3"],[UIImage imageNamed:@"bugOne2"],[UIImage imageNamed:@"bugOne1"],[UIImage imageNamed:@"bugOne2"],[UIImage imageNamed:@"bugOne3"],[UIImage imageNamed:@"bugOne4"],[UIImage imageNamed:@"bugOne5"],[UIImage imageNamed:@"bugOne4"],nil]; 
        self.bugOneButton.imageView.animationDuration = 0.3; 
        [self.bugOneButton.imageView startAnimating]; 

        self.bugOneButton.center = CGPointMake(self.bugOnePositionX, self.bugOneButton.center.y - 50); 

       }completion:^(BOOL finished) { 
        [self.bugOneButton.imageView stopAnimating]; 
       }]; 


}