android中RecyclerView自定义分割线实现

public class CustomDecoration extends RecyclerView.ItemDecoration { public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL; public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL; private Drawable mDivider; private int mOrientation; /**  * 分割线缩进值  */ private int inset; private Paint paint; /**  * @param context  * @param orientation layout的方向  * @param drawable  引入的drawable的ID  * @param inset    分割线缩进值  */ public CustomDecoration(Context context, int orientation, int drawable, int inset) {   mDivider = context.getResources().getDrawable(drawable);   this.inset = inset;   paint = new Paint();   paint.setColor(context.getResources().getColor(R.color.white));   paint.setStyle(Paint.Style.FILL);   paint.setAntiAlias(true);   setOrientation(orientation); } public void setOrientation(int orientation) {   if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) {     throw new IllegalArgumentException("invalid orientation");   }   mOrientation = orientation; } @Override public void onDraw(Canvas c, RecyclerView parent) {   if (mOrientation == VERTICAL_LIST) {     drawVertical(c, parent);   } else {     drawHorizontal(c, parent);   } } private void drawVertical(Canvas c, RecyclerView parent) {   final int left = parent.getPaddingLeft();   final int right = parent.getWidth() - parent.getPaddingRight();   final int childCount = parent.getChildCount();   //最后一个item不画分割线   for (int i = 0; i < childCount - 1; i++) {     final View child = parent.getChildAt(i);     final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();     final int top = child.getBottom() + params.bottomMargin;     final int bottom = top + mDivider.getIntrinsicHeight();     if (inset > 0) {       c.drawRect(left, top, right, bottom, paint);       mDivider.setBounds(left + inset, top, right - inset, bottom);     } else {       mDivider.setBounds(left, top, right, bottom);     }     mDivider.draw(c);   } } private void drawHorizontal(Canvas c, RecyclerView parent) {   final int top = parent.getPaddingTop();   final int bottom = parent.getHeight() - parent.getPaddingBottom();   final int childCount = parent.getChildCount();   for (int i = 0; i < childCount - 1; i++) {     final View child = parent.getChildAt(i);     final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();     final int left = child.getRight() + params.rightMargin;     final int right = left + mDivider.getIntrinsicHeight();     mDivider.setBounds(left, top, right, bottom);     mDivider.draw(c);   } } //由于Divider也有宽高，每一个Item需要向下或者向右偏移 @Override public void getItemOffsets(Rect outRect, int itemPosition, RecyclerView parent) {   if (mOrientation == VERTICAL_LIST) {     outRect.set(0, 0, 0, mDivider.getIntrinsicHeight());   } else {     outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0);   } }}

recyclerView.setLayoutManager(new LinearLayoutManager(this));recyclerView.addItemDecoration(new CustomDecoration(this, CustomDecoration.VERTICAL_LIST, R.drawable.divider_love, UnitHelper.dip2px(this, 15)));recyclerView.setAdapter(adapter);

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <solid android:color="#CB8589"/> <size android:height="15dp"/></shape>

<shape xmlns:android="http://schemas.android.com/apk/res/android"  android:shape="rectangle">  <solid android:color="#CD3131"/>  <size android:height="1dp"/></shape>

paint.setColor(Color.parseColor("#ECF0F1"));