ios - 使用 animatewithduration 移动 ImageView

Question

我试图多次移动图像。这就是我尝试实现它的方式。

override func viewDidAppear(animated: Bool) {

        UIView.animateWithDuration(1, animations: { () -> Void in

            self.sattelite.center.x = 50
            self.sattelite.center.y = 100

            self.sattelite.center.x = 50
            self.sattelite.center.y = 50

            self.sattelite.center.x = 50
            self.sattelite.center.y = 300



        })

}

然而，animatewithduration 方法只执行其中一个 Action 。有什么方法可以为 ImageView 的所有三个运动设置动画吗？谢谢。

Answer 1

您可以轻松地链接动画；在完成时开始另一个:

• 这里有一个例子:

  //1st animation
  UIView.animateWithDuration(1.0,
      delay: 0.0,
      options: .CurveEaseInOut | .AllowUserInteraction,
      animations: {
           //some code ex : view.layer.alpha = 0.0
      },
      completion: { finished in
  
          //second animation at completion
          UIView.animateWithDuration(1.0
              , delay: 0.0,
              , options: .CurveEaseInOut | .AllowUserInteraction,
              , animations: { () -> Void in
  
                 //some code ex : view.layer.alpha = 1.0
  
              }
              ,   completion: { finished in
  
                  //third animation at completion
                  UIView.animateWithDuration(1.0,
                      delay: 0.0,
                      options: .CurveEaseInOut | .AllowUserInteraction,
                      animations: {
                           //some code ex : view.layer.alpha = 0.0
                      },
                      completion: { finished in
                      //FINISH : 3 animations!!!
                  })
  
  
          })
  })