本文介绍了Android设置缩放动画的枢轴点的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试将视图缩放到特定大小,但不太了解旋转的工作原理.
I am trying to scale views to a certain size but can't quite understand how pivoting works.
假设我只想向上缩放视图.pivotY"应该保持什么价值?在 XML 中,它是一个百分比.以编程方式应用枢轴点的情况如何?
Say I want to scale the view upwards only. What value should the "pivotY" hold? In XML, it is a percentage. How is it when applying pivot point programmatically?
例子:
ObjectAnimator scaleY = ObjectAnimator.ofFloat(view, "scaleY", scaleSize);
ObjectAnimator pivotY = ObjectAnimator.ofFloat(view, "pivotY", pivotPoint);
AnimatorSet set = new AnimatorSet();
set.PlayTogether(scaleY, pivotY);
推荐答案
其实很简单.
如果您想向上扩展,一个明确的选择是:
If you want to scale upwards one clear option is:
view.setPivotY(100);
以下:
view.setPivotY(0);
然后制作动画.
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