如何在兩點之間連續彈跳uibutton

Question

我是iPhone新手，我正在使用folling代碼為我的UIButton設置動畫，它完美地動畫，但是當我點擊按鈕時，動作沒有開始。 請幫助我解決這個問題。

 [UIButton animateWithDuration:3.0
                          delay:0.0f
                        options: UIViewAnimationOptionRepeat | UIViewAnimationOptionAutoreverse | UIViewAnimationOptionBeginFromCurrentState
                     animations: ^(void){
                         CGPoint p = Mybutton.center;
                         p.y += 100;
                         Mybutton.center = p;

                     }
                     completion:NULL];

Answer 1

這個代碼是在按鈕動作還是viewDidLoad中？ 試試這個：

   - (IBAction)buttonAnimation:(id)sender {
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];
animation.duration = .3;
animation.repeatCount = 5;
animation.fromValue = [NSValue valueWithCGPoint:yourButton.center];
animation.toValue = [NSValue valueWithCGPoint:CGPointMake(yourButton.center.x, yourButton.center.y-30)];
animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
animation.autoreverses = YES;
animation.removedOnCompletion = NO;
[yourButton.layer addAnimation:animation forKey:@"position"];}

你應該把它放在按鈕動作中。 希望能幫助到你