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animateWithDurationビフォーアフター

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クロージャの書き直しでハマったので書く。

前提

  1. arrowは画像にアウトレット接続していること

Before

[UIView animateWithDuration:0.5
          delay:0.0
          options:UIViewAnimationOptionCurveEaseOut
          animations:^{
              _arrow.center = CGPointMake(pt.x, pt.y - height/2);
          }
          completion:nil];

After

UIView.animateWithDuration(
          0.5,
          delay:0.3,
          options:UIViewAnimationOptions.CurveEaseOut,
          animations: {() -> Void in
              self.arrow.center = CGPoint(x:pt.x, y:pt.y - height/2)
          },
          completion: nil
      );

要点

  • 定数が変わる(UIViewAnimationOptionsCurveEaseOutUIViewAnimationOptions.CurveEaseOut
  • クロージャの構文がちがう(^{{() -> Void in
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