ItemSpacingDecoration.java
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.car.widget.itemdecorators;
import static androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP_PREFIX;
import android.graphics.Rect;
import android.view.View;
import androidx.annotation.RestrictTo;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
/**
* A {@link RecyclerView.ItemDecoration} that will add spacing between each item in the
* RecyclerView that it is added to.
*
* @hide
*/
@RestrictTo(LIBRARY_GROUP_PREFIX)
public class ItemSpacingDecoration extends RecyclerView.ItemDecoration {
private int mItemSpacing;
public ItemSpacingDecoration(int itemSpacing) {
mItemSpacing = itemSpacing;
}
@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent,
RecyclerView.State state) {
super.getItemOffsets(outRect, view, parent, state);
int position = parent.getChildAdapterPosition(view);
// Skip offset for last item except for GridLayoutManager.
if (position == state.getItemCount() - 1
&& !(parent.getLayoutManager() instanceof GridLayoutManager)) {
return;
}
outRect.bottom = mItemSpacing;
}
/**
* @param itemSpacing sets spacing between each item.
*/
public void setItemSpacing(int itemSpacing) {
mItemSpacing = itemSpacing;
}
}