Android RecyclerView使用GridLayoutManager间距设置的方法
时间: 2024-02-25 10:30:54 浏览: 22
可以通过设置RecyclerView的ItemDecoration来实现间距的设置。例如,可以自定义一个继承自RecyclerView.ItemDecoration的类,在其中重写getItemOffsets()方法来设置每个Item的间距。具体实现请参考以下代码:
```
public class GridSpacingItemDecoration extends RecyclerView.ItemDecoration {
private int spanCount;
private int spacing;
private boolean includeEdge;
public GridSpacingItemDecoration(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
}
}
}
}
```
然后在使用GridLayoutManager的RecyclerView中,调用addItemDecoration()方法添加该ItemDecoration即可:
```
int spanCount = 3; // number of columns
int spacing = 50; // spacing between columns
boolean includeEdge = false; // include edge spacing or not
recyclerView.addItemDecoration(new GridSpacingItemDecoration(spanCount, spacing, includeEdge));
```
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