ConstraintLayout：如何以編程方式將屏幕划分為屏幕高度的兩個相等部分

Question

如何以編程方式將屏幕分成兩個相等的高度和約束布局？

Answer 1

為此，您需要將高度設置為零，然后相應地設置百分比。 例如，

    ConstraintLayout.LayoutParams lp = (ConstraintLayout.LayoutParams) viewTop.getLayoutParams();
    lp.height = 0;
    lp.matchConstraintPercentHeight = (float) 0.5;
    ConstraintLayout.LayoutParams lp2 = (ConstraintLayout.LayoutParams)viewBottom.getLayoutParams();
    lp2.height = 0;
    lp2.matchConstraintPercentHeight = (float) 0.5;
    viewTop.setLayoutParams(lp);
    viewBottom.setLayoutParams(lp2);