代码进行Relativelayout，constraintLayout布局

前提准备
1：创建一个iD resources文件，用于管理id

           

 

2:记得调用该方法

//手动创建relativeLayout
fun addRelativeLayout(){
    //创建Relativelayout容器
    val relativeLayout = RelativeLayout(this).apply {
        id = R.id.mContainer
        //设置宽高
        layoutParams = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
        RelativeLayout.LayoutParams.MATCH_PARENT)
    }.also {
        setContentView(it)
    }
    //添加图片
    ImageView(this).apply {
        id = R.id.mheader
        //图片的的大小
        layoutParams = RelativeLayout.LayoutParams(dpTopx(120),dpTopx(90))
        //设置图片资源
        setImageResource(R.drawable.bjx)
        //图片的填充模式
        scaleType = ImageView.ScaleType.CENTER_CROP
    }.also {
        //添加到relativeLayout上
        relativeLayout.addView(it)
    }
    //添加标题
    TextView(this).apply {
        layoutParams  = RelativeLayout.LayoutParams(0,0).apply {
            //设置宽高为0，设置其和其他控件的相对关系
            //一：和头像的相对关系
            addRule(RelativeLayout.RIGHT_OF,R.id.mheader)
            //和父容器右边对齐
            addRule(RelativeLayout.ALIGN_PARENT_END,R.id.mContainer)
            //和头像顶部对齐
            addRule(RelativeLayout.ALIGN_TOP,R.id.mheader)
            //和头像底部对齐
            addRule(RelativeLayout.ALIGN_BOTTOM,R.id.mheader)
        }
        text = "标题"
        textSize = 40f
        relativeLayout.addView(this)
    }
}

测试：

代码对constraintLayout进行布局

fun addConstrainLayout(){
    val constraintLayout = ConstraintLayout(this).apply {
        id = R.id.mContainer
        layoutParams = ConstraintLayout.LayoutParams(
            ConstraintLayout.LayoutParams.MATCH_PARENT,
            ConstraintLayout.LayoutParams.MATCH_PARENT
        )
    }
    setContentView(constraintLayout)
    //创建图片
    ImageView(this).apply {
        //设置大小
        layoutParams = ConstraintLayout.LayoutParams(dpTopx(100),dpTopx(100)).apply {
            //左边和父容器对齐
            leftToLeft = R.id.mContainer
            //顶部和父容器的顶部对齐
            topToTop = R.id.mContainer
        }
        //设置图片资源
        setImageResource(R.drawable.bjx)
        //填充方式
        scaleType = ImageView.ScaleType.CENTER_CROP
        //添加
        constraintLayout.addView(this)
    }

}
测试：

总结;代码对任何容器和控件的布局，一：创建，二：对其进行布局的约束，三：添加到相应的容器上