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This commit is contained in:
Antonio Cappiello 2020-11-22 19:11:38 +01:00
parent 8b7e383dc2
commit c2be2711b9
44 changed files with 1028 additions and 191 deletions
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40
app/src/main/java/com/cappielloantonio/play/helper/recyclerview/ItemlDecoration.java Normal file
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package com.cappielloantonio.play.helper.recyclerview;
import android.graphics.Rect;
import android.view.View;
import androidx.recyclerview.widget.RecyclerView;
public class ItemlDecoration extends RecyclerView.ItemDecoration {
private int spanCount;
private int spacing;
private boolean includeEdge;
public ItemlDecoration(int spanCount, int spacing, boolean includeEdge) {
this.spanCount = spanCount;
this.spacing = spacing;
this.includeEdge = includeEdge;
}
@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
int position = parent.getChildAdapterPosition(view); // item position
int column = position % spanCount; // item column
if (includeEdge) {
outRect.left = spacing - column * spacing / spanCount; // spacing - column * ((1f / spanCount) * spacing)
outRect.right = (column + 1) * spacing / spanCount; // (column + 1) * ((1f / spanCount) * spacing)
if (position < spanCount) { // top edge
outRect.top = spacing;
}
outRect.bottom = spacing; // item bottom
} else {
outRect.left = column * spacing / spanCount; // column * ((1f / spanCount) * spacing)
outRect.right = spacing - (column + 1) * spacing / spanCount; // spacing - (column + 1) * ((1f / spanCount) * spacing)
if (position >= spanCount) {
outRect.top = spacing; // item top
}
}
}
}