Android: Add divider between items in RecyclerView

you should try add Divider

mListview.addItemDecoration(new DividerItemDecoration(this.getActivity(), LinearLayout.VERTICAL));

I have done this way:

onCreateView() of Fragment:

RecyclerView recyclerView = (RecyclerView) rootView.findViewById(R.id.recyclerView);recyclerView.addItemDecoration(new SimpleDividerItemDecoration(getActivity()));

SimpleDividerItemDecoration.java:

public class SimpleDividerItemDecoration extends RecyclerView.ItemDecoration {    private Drawable mDivider;    public SimpleDividerItemDecoration(Context context) {        mDivider = context.getResources().getDrawable(R.drawable.recycler_horizontal_divider);    }    @Override    public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {        int left = parent.getPaddingLeft();        int right = parent.getWidth() - parent.getPaddingRight();        int childCount = parent.getChildCount();        for (int i = 0; i < childCount; i++) {            View child = parent.getChildAt(i);            RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();            int top = child.getBottom() + params.bottomMargin;            int bottom = top + mDivider.getIntrinsicHeight();            mDivider.setBounds(left, top, right, bottom);            mDivider.draw(c);        }    }}

recycler_horizontal_divider.xml:

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="rectangle">    <size        android:width="1dp"        android:height="1dp" />    <solid android:color="#2EC590" /></shape>

Hope this will help you.

RecyclerView doesn’t have any divider related parameters to display the divider. Instead you need to extend a class from ItemDecoration and use addItemDecoration() method to display the divider.

Create a class named DividerItemDecoration.java and paste the below code.

DividerItemDecoration.java

public class DividerItemDecoration extends RecyclerView.ItemDecoration {    private static final int[] ATTRS = new int[]{            android.R.attr.listDivider    };    public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;    public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;    private Drawable mDivider;    private int mOrientation;    public DividerItemDecoration(Context context, int orientation) {        final TypedArray a = context.obtainStyledAttributes(ATTRS);        mDivider = a.getDrawable(0);        a.recycle();        setOrientation(orientation);    }    public void setOrientation(int orientation) {        if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) {            throw new IllegalArgumentException("invalid orientation");        }        mOrientation = orientation;    }    @Override    public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {        if (mOrientation == VERTICAL_LIST) {            drawVertical(c, parent);        } else {            drawHorizontal(c, parent);        }    }    public void drawVertical(Canvas c, RecyclerView parent) {        final int left = parent.getPaddingLeft();        final int right = parent.getWidth() - parent.getPaddingRight();        final int childCount = parent.getChildCount();        for (int i = 0; i < childCount; 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();            mDivider.setBounds(left, top, right, bottom);            mDivider.draw(c);        }    }    public 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; 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);        }    }    @Override    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {        if (mOrientation == VERTICAL_LIST) {            outRect.set(0, 0, 0, mDivider.getIntrinsicHeight());        } else {            outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0);        }    }}

Open Activity.java and set the item decoration using addItemDecoration() method before setting the adapter.

recyclerView.addItemDecoration(new DividerItemDecoration(this, LinearLayoutManager.VERTICAL));// set the adapterrecyclerView.setAdapter(mAdapter);