radiobutton set layoutparams do not work when be add to radiogroup

Question

 val param =  LinearLayout.LayoutParams(WRAP_CONTENT,WRAP_CONTENT)
        param.rightMargin = 100

        val rb = RadioButton(this)
        rb.text = "1"
        rb.setTextColor(Color.parseColor("#ffffff"))
        rb.layoutParams = param

        rgroup.addView(rb)

        val rb2 = RadioButton(this)
        rb2.text = "2"
        rb2.setTextColor(Color.parseColor("#ffffff"))
        rb2.layoutParams = param
        rgroup.addView(rb2)

first set layoutparams for rb and then add it to radiogroup , the right margin do no work when run in android M , but works over M ，its cause by diff andoird version ? the same code , the diff result

Answer 1

Use RadioGroup.LayoutParams instead of LinearLayout.LayoutParams