调用
addItemDecoration(
TextGridSpacingItemDecoration(
3,//三列
1f.dp,//表格线 1dp
R.color.color_f1f1f5.getColor()//线颜色
)
)
分割线类图如下：
package com.shizhuang.poizon.modules.sell.batchSellDialog.view
import android.graphics.*
import android.view.View
import androidx.recyclerview.widget.RecyclerView
import com.shizhuang.poizon.modules.ui.components.dp
/**
*
* @Author: chenfeipeng
* @Email: o_chenfeipeng@shizhuang-inc.com
* @Date: 2024/11/21
* @Description: 文本网格分割线
* ----------------------------------------------
* important modify:
*
*/
class TextGridSpacingItemDecoration(private val spanCount: Int, private val spacing: Int, private val colorPaint: Int) : RecyclerView.ItemDecoration() {
private val paint = Paint().apply {
color =colorPaint // 设置分割线颜色
strokeWidth =1f.dp.toFloat()// 分割线宽度
style = Paint.Style.STROKE // 设置为描边模式
isAntiAlias =true // 启用抗锯齿
}
override fun onDraw(c: Canvas, parent: RecyclerView, state: RecyclerView.State) {
val childCount = parent.childCount
for (indexin 0 until childCount) {
val child = parent.getChildAt(index)
val params = child.layoutParams as RecyclerView.LayoutParams
val currentPosition = index +1
if (currentPosition <=spanCount) {
if (currentPosition %spanCount ==1) {
// 左边的线
drawLeftLine(child, params, c)
// 右边的线
drawRightLine(child, params, c)
// 上面的线
drawTopLine(child, params, c)
// 下面的线
drawBottomLine(child, params, c)
}else if (currentPosition %spanCount ==2) {
// 右边的线
drawRightLine(child, params, c)
// 上面的线
drawTopLine(child, params, c)
// 下面的线
drawBottomLine(child, params, c)
}else if (currentPosition %spanCount ==0) {
// 右边的线
drawRightLine(child, params, c)
// 上面的线
drawTopLine(child, params, c)
// 下面的线
drawBottomLine(child, params, c)
}
}else {
// 每排最左侧和最右侧的左右边距设置成 20 像素, 其余 4 个边距一律设置成5
if (currentPosition %spanCount ==1) {
// 左边的线
drawLeftLine(child, params, c)
// 右边的线
drawRightLine(child, params, c)
// 下面的线
drawBottomLine(child, params, c)
}else if (currentPosition %spanCount ==2) {
// 右边的线
drawRightLine(child, params, c)
// 下面的线
drawBottomLine(child, params, c)
}else if (currentPosition %spanCount ==0) {
// 右边的线
drawRightLine(child, params, c)
// 下面的线
drawBottomLine(child, params, c)
}
}
}
}
private fun drawLeftLine(child: View, params: RecyclerView.LayoutParams, c: Canvas) {
// 左边的线
val left = child.left + params.leftMargin
c.drawLine(left.toFloat(), child.top.toFloat() -spacing /3f, left.toFloat(), child.bottom.toFloat() +spacing /3f, paint)
}
private fun drawRightLine(child: View, params: RecyclerView.LayoutParams, c: Canvas) {
// 右边的线
val right = child.right + params.rightMargin
c.drawLine(right.toFloat(), child.top.toFloat() -spacing /3f, right.toFloat(), child.bottom.toFloat() +spacing /3f, paint)
}
private fun drawTopLine(child: View, params: RecyclerView.LayoutParams, c: Canvas) {
// 上面的线
val top = child.top + params.topMargin
c.drawLine(child.left.toFloat() -spacing /3f, top.toFloat(), child.right.toFloat() +spacing /3f, top.toFloat(), paint)
}
private fun drawBottomLine(child: View, params: RecyclerView.LayoutParams, c: Canvas) {
// 下面的线
val bottom = child.bottom + params.bottomMargin
c.drawLine(child.left.toFloat() -spacing /3f, bottom.toFloat(), child.right.toFloat() +spacing /3f, bottom.toFloat(), paint)
}
override fun getItemOffsets(outRect: Rect, view: View, parent: RecyclerView, state: RecyclerView.State) {
val index = parent.getChildAdapterPosition(view)
val currentPosition = index +1
if (currentPosition <=spanCount) {
if (currentPosition %spanCount ==1) {
// 每排最左侧的边距
outRect.left =spacing
outRect.top =spacing
outRect.right =spacing
outRect.bottom =spacing
}else if (currentPosition %spanCount ==2) {
outRect.left =0
outRect.top =spacing
outRect.right =spacing
outRect.bottom =spacing
}else if (currentPosition %spanCount ==0) {
outRect.left =0
outRect.top =spacing
outRect.right =spacing
outRect.bottom =spacing
}
}else {
if (currentPosition %spanCount ==1) {
outRect.left =spacing
outRect.right =spacing
outRect.bottom =spacing
}else if (currentPosition %spanCount ==2) {
outRect.left =0
outRect.right =spacing
outRect.bottom =spacing
}else if (currentPosition %spanCount ==0) {
outRect.left =0
outRect.right =spacing
outRect.bottom =spacing
}
outRect.top =0
}
}
}
