Android实现一个简易的带边输入框

<declare-styleable name="RoundRectEditText">
    <attr name="count" format="integer"/>
    <attr name="itemPading" format="dimension"/>
    <attr name="strokeHight" format="dimension"/>
    <attr name="strokeColor" format="color"/>/>
</declare-styleable>

val typedArray =context.obtainStyledAttributes(it, R.styleable.RoundRectEditText)
count = typedArray.getInt(R.styleable.RoundRectEditText_count, count)
itemPading = typedArray.getDimension(R.styleable.RoundRectEditText_itemPading,0f)
strokeHight = typedArray.getDimension(R.styleable.RoundRectEditText_strokeHight,0f)
strokeColor = typedArray.getColor(R.styleable.RoundRectEditText_strokeColor,strokeColor)
typedArray.recycle()

strokeWith =(width.toFloat() - paddingLeft.toFloat() - paddingRight.toFloat() - (count - 1) * itemPading) / count

val fontMetrics = paint.fontMetrics
val textHeight = fontMetrics.bottom - fontMetrics.top
val distance = textHeight / 2 - fontMetrics.bottom
val baseline = height / 2f + distance

private fun getIndexOfX(index: Int): Float {
    return paddingLeft.toFloat() + index * (itemPading + strokeWith) + 0.5f * strokeWith
}

//隐藏自带光标
super.setCursorVisible(false)
override fun onDraw(canvas: Canvas) {
        //不注释掉会显示在最底部
//        super.onDraw(canvas)
          ......
}