android - 相对布局宽度/高度无法以编程方式工作？

Question

我想以编程方式进行相对布局并设置 android:layout_widht=60 android:layout_height=60。当我以编程方式进行时，它会填满整个屏幕吗？我怎样才能做到这一点？

我的代码:`

      RelativeLayout relativeLayout=new RelativeLayout(getContext());
        RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
                LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        rel_btn.height = 60;
        rel_btn.width = 60;
        relativeLayout.setLayoutParams(rel_btn);
 this.setBackgroundResource(com.example.R.drawable.line);`

画面:

Answer 1

btn.getLayoutParams().width = width;
btn.getLayoutParams().height = height;

其实就是用

RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
            60, 60);

没关系。问题可能是背景图片拉伸(stretch)了按钮