RecyclerView是谷歌V7包下新增的控件,用来替代ListView的使用，他可以通过设置LayoutManager来快速实现listview、gridview、瀑布流的效果，而且还可以设置横向和纵向显示，添加动画效果也非常简单(自带了ItemAnimation，可以设置加载和移除时的动画，方便做出各种动态浏览的效果),也是官方推荐使用的
引用：
compile 'com.android.support:cardview-v7:21.0.3'
compile 'com.android.support:recyclerview-v7:21.0.3'
简单使用：
mRecyclerView = findView(R.id.id_recyclerview);
//设置布局管理器
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));//类listview //mRecyclerView.setLayoutManager(new GridLayoutManager(this, 2));//类gridview //mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, OrientationHelper.VERTICAL));//类瀑布流
//设置adapter
mRecyclerView.setAdapter(adapter)
//点击事件
需要自定义，有3中方法，目前以在adapter中添加点击为例
adapter：
/** * Created by hp on 2017/2/7. */ public class MyListAdapter extends RecyclerView.Adapter<MyListAdapter.MyRecyclerListHolder> { private Context mContext; private List<String> mDatas; private LayoutInflater inflater; public MyListAdapter(Context context, List<String> datas){ this. mContext=context; this. mDatas=datas; inflater=LayoutInflater. from(mContext); } //添加一个点击事件的接口 public interface OnItemClickLitener{ void onItemClick(View view, int position); void onItemLongClick(View view , int position); } private OnItemClickLitener mOnItemClickLitener; public void setOnItemClickLitener(OnItemClickLitener mOnItemClickLitener) { this.mOnItemClickLitener = mOnItemClickLitener; } @Override public MyRecyclerListHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = inflater.inflate(R.layout.item_home1, parent, false); MyRecyclerListHolder holder= new MyRecyclerListHolder(view); return holder; } @Override public void onBindViewHolder(final MyRecyclerListHolder holder, int position) { holder.tv.setText(mDatas.get(position)); holder.bb.setText(mDatas.get(position)); // 如果设置了回调，则设置点击事件 if (mOnItemClickLitener != null) { //holder.itemView.其中iteamView是系统个提供的，表示对应的iteam一整栏，也就是说点击事件绑定的是整个iteam栏 holder.itemView.setOnClickListener(new View.OnClickListener() //holder.tv.setOnClickListener这个点击事件就绑定为对应的textview控件了 { @Override public void onClick(View v) { int pos = holder.getPosition(); mOnItemClickLitener.onItemClick(holder.itemView, pos); } }); } } @Override public int getItemCount() { return mDatas.size(); } class MyRecyclerListHolder extends ViewHolder{ TextView tv; Button bb; public MyRecyclerListHolder(View itemView) { super(itemView); tv=(TextView) itemView.findViewById(R.id. id_num); bb = (Button) itemView.findViewById(R.id.bb); } } }
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RecyclerView的分割线：
通过该方法添加分割线： mRecyclerView.addItemDecoration()
//该分割线是系统默认的，你可以在theme.xml中找到该属性的使用情况
mRecyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL_LIST));
添加默认分割线：高度为2px，颜色为灰色 mRecyclerView.addItemDecoration(new RecycleViewDivider(mContext, LinearLayoutManager.VERTICAL)); 添加自定义分割线：可自定义分割线drawable 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 mRecyclerView.addItemDecoration(new RecycleViewDivider( mContext, LinearLayoutManager.VERTICAL, 10, getResources().getColor(R.color.divide_gray_color)));
万能分割线登场： 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 <?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>
