如何在代码中设置子权重？

Question

我希望该按钮（子）将具有水平LinearLayout（其父级）的全宽的25％。代码：

LinearLayout ll = new LinearLayout(this);
ll.setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
ll.setWeightSum (1.0f);

Button b = new Button (this);
ll.addView(b);

我该怎么办？感谢。

Answer 1

试试这个：

    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENTS,LayoutParams.FILL_PARENT));
    lp.weight = 0.25;
    b.setLayoutParams(lp);

Answer 2

您可以将其作为LinearLayout.LayoutParams构造函数的一部分传递：

LayoutParams param = new LinearLayout.LayoutParams(
                             LayoutParams.MATCH_PARENT,
                             LayoutParams.MATCH_PARENT, 1.0f);