以编程方式在PercentageRelativeLayout中设置纵横比

Question

我想以编程方式在from内设置 $res = $this->db->get('account'); 的宽高比。

我已经尝试了FrameLayout，它正在工作：

PercentRelativeLayout

但我需要以编程方式设置它。

我该怎么做？

Answer 1

PercentRelativeLayout layout = ...;
PercentRelativeLayout.LayoutParams layoutParams 
           = (PercentRelativeLayout.LayoutParams) layout.getLayoutParams();
layoutParams.getPercentLayoutInfo().aspectRatio = ...; // float value
layout.requestLayout();

Answer 2

来自@azizbekian回答我的回答，

不使用分数，设置百分比浮动值：

 PercentRelativeLayout.LayoutParams params = (PercentRelativeLayout.LayoutParams) mFlPromoVideoContainer.getLayoutParams();
        PercentLayoutHelper.PercentLayoutInfo info = params.getPercentLayoutInfo();
        info.widthPercent = 1f;
        info.aspectRatio = 1.78f;//178%
        mFlPromoVideoContainer.requestLayout();

您可以在XML中指定分数：

<item name="aspect_ratio" type="fraction">178%</item>

在Java中，

 PercentRelativeLayout.LayoutParams params = (PercentRelativeLayout.LayoutParams) mFlPromoVideoContainer.getLayoutParams();
        PercentLayoutHelper.PercentLayoutInfo info = params.getPercentLayoutInfo();
        info.widthPercent = 1f;
        info.aspectRatio = getResources().getFraction(R.fraction.aspect_ratio, 1, 1);
        mFlPromoVideoContainer.requestLayout();