档添加RecyclerView的Divider时候，要加入距离，不然除了第一Item之后的item 设置的距离会有问题。
正解如下。
1，
//set recycler view
recyclerView= (RecyclerView)v.findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(newLinearLayoutManager(getActivity()));
//adding custom divider
recyclerView.addItemDecoration(newSimpleDividerItemDecoration(getContext()));
2，
public classSimpleDividerItemDecorationextendsRecyclerView.ItemDecoration {
privateDrawablemDivider;
publicSimpleDividerItemDecoration(Context context) {
mDivider= context.getResources().getDrawable(R.drawable.divider);
}
@Override
public voidonDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
intleft = parent.getPaddingLeft();
intright = parent.getWidth() - parent.getPaddingRight();
intchildCount = parent.getChildCount();
for(inti =0; i < childCount; i++) {
View child = parent.getChildAt(i);
RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
inttop = child.getBottom() + params.bottomMargin;
intbottom = top +mDivider.getIntrinsicHeight();mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
}
//adding space
@Override
public voidgetItemOffsets(Rect outRect, View view, RecyclerView parent,
RecyclerView.State state) {
outRect.bottom= (int) ZR.convertDpToPx(view.getContext(),6);
}
}
3，divider.xml
<shape xmlns:android="http://scheme.android.com/apk/res/android"
android:shape="rectangle">
<solid android:clor="#f2f2f2"/>
<size android:height="6dp"/>
</shape>
