Android RadioGroup RadioButton

 shoesRadioGroup = radioGroup_type_shoes
    for (i in 0 until shoesList.size) {
        var radiobutton = RadioButton(shoesRadioGroup.context)
        radiobutton.id = i
        val a: Bitmap? = null
        radiobutton.buttonDrawable = BitmapDrawable(a)
        val mButtonLayoutParams =
            RadioGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT)
        mButtonLayoutParams.setMargins(DensityUtils.dp2px(context, 16F), 0, 0, 0)

        radiobutton.layoutParams = mButtonLayoutParams
        radiobutton.text = shoesList[i]
        //设置选中未选中颜色 使用getColorStateList 
        radiobutton.setTextColor(context!!.resources.getColorStateList(R.color.select_radiobutton))
        if (i == 0) {
            //默认选中第一个
            radiobutton.isChecked = true
        }
        shoesRadioGroup.addView(radiobutton)
    }