RecyclerView的万能分割线
2016-01-18 17:35
489 查看
效果图:
使用方法:
添加默认分割线:高度为2px,颜色为灰色
[code]mRecyclerView.addItemDecoration(new RecycleViewDivider(mContext, LinearLayoutManager.VERTICAL));
添加自定义分割线:可自定义分割线drawable
[code]mRecyclerView.addItemDecoration(new RecycleViewDivider( mContext, LinearLayoutManager.VERTICAL, R.drawable.divider_mileage));
添加自定义分割线:可自定义分割线高度和颜色
[code]mRecyclerView.addItemDecoration(new RecycleViewDivider( mContext, LinearLayoutManager.VERTICAL, 10, getResources().getColor(R.color.divide_gray_color)));
万能分割线登场:
[code]public class RecycleViewDivider extends RecyclerView.ItemDecoration { private Paint mPaint; private Drawable mDivider; private int mDividerHeight = 2;//分割线高度,默认为1px private int mOrientation;//列表的方向:LinearLayoutManager.VERTICAL或LinearLayoutManager.HORIZONTAL private static final int[] ATTRS = new int[]{android.R.attr.listDivider}; /** * 默认分割线:高度为2px,颜色为灰色 * * @param context * @param orientation 列表方向 */ public RecycleViewDivider(Context context, int orientation) { if (orientation != LinearLayoutManager.VERTICAL && orientation != LinearLayoutManager.HORIZONTAL) { throw new IllegalArgumentException("请输入正确的参数!"); } mOrientation = orientation; final TypedArray a = context.obtainStyledAttributes(ATTRS); mDivider = a.getDrawable(0); a.recycle(); } /** * 自定义分割线 * * @param context * @param orientation 列表方向 * @param drawableId 分割线图片 */ public RecycleViewDivider(Context context, int orientation, int drawableId) { this(context, orientation); mDivider = ContextCompat.getDrawable(context, drawableId); mDividerHeight = mDivider.getIntrinsicHeight(); } /** * 自定义分割线 * * @param context * @param orientation 列表方向 * @param dividerHeight 分割线高度 * @param dividerColor 分割线颜色 */ public RecycleViewDivider(Context context, int orientation, int dividerHeight, int dividerColor) { this(context, orientation); mDividerHeight = dividerHeight; mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); mPaint.setColor(dividerColor); mPaint.setStyle(Paint.Style.FILL); } //获取分割线尺寸 @Override public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) { super.getItemOffsets(outRect, view, parent, state); outRect.set(0, 0, 0, mDividerHeight); } //绘制分割线 @Override public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) { super.onDraw(c, parent, state); if (mOrientation == LinearLayoutManager.VERTICAL) { drawVertical(c, parent); } else { drawHorizontal(c, parent); } } //绘制横向 item 分割线 private void drawHorizontal(Canvas canvas, RecyclerView parent) { final int left = parent.getPaddingLeft(); final int right = parent.getMeasuredWidth() - parent.getPaddingRight(); final int childSize = parent.getChildCount(); for (int i = 0; i < childSize; i++) { final View child = parent.getChildAt(i); RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) child.getLayoutParams(); final int top = child.getBottom() + layoutParams.bottomMargin; final int bottom = top + mDividerHeight; if (mDivider != null) { mDivider.setBounds(left, top, right, bottom); mDivider.draw(canvas); } if (mPaint != null) { canvas.drawRect(left, top, right, bottom, mPaint); } } } //绘制纵向 item 分割线 private void drawVertical(Canvas canvas, RecyclerView parent) { final int top = parent.getPaddingTop(); final int bottom = parent.getMeasuredHeight() - parent.getPaddingBottom(); final int childSize = parent.getChildCount(); for (int i = 0; i < childSize; i++) { final View child = parent.getChildAt(i); RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) child.getLayoutParams(); final int left = child.getRight() + layoutParams.rightMargin; final int right = left + mDividerHeight; if (mDivider != null) { mDivider.setBounds(left, top, right, bottom); mDivider.draw(canvas); } if (mPaint != null) { canvas.drawRect(left, top, right, bottom, mPaint); } } } }
附:自定的drawable文件一份
[code]<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <size android:height="20dp" /> <solid android:color="#ff992900" /> </shape>
相关文章推荐
- web应用的乱码解决
- php 5.6以上可以采用new PDD连接数据库的方法。
- Oracle创建DataBase Links
- Android活动(Activity)状态与生命周期总结
- 程序猿人们、媛媛们精神分裂的9件事
- Linux C串口编程部分 转
- nginx 重写 rewrite 基础及实例
- 自动化专业出路-前景-就业方向
- 在电脑上用麦克风录音声音明显小于实际声音
- iOS 日期与字符串格式互转
- iOS url编码、解码
- git add
- 360加固动态脱壳
- 输入一个无符号整数,用最少的步骤将该数变为1
- 树莓派 原理图 摄像头接口定义
- setw和setfill控制输出间隔
- 在centos 6.2,python2.7 下安装QT 4.8.3,pyqt 4.9.5 详细步骤
- MongoDB 基础(六)安全性(权限操作)
- 网站CDN监测接口
- Objective-C语法-数组NSArray和可变数组NSMutableArray