老師，你好，根據這樣來寫，我發現左右的item和中間的item大小不一樣。

• GridSpaceItemDecoration 類

public?class?GridSpaceItemDecoration?extends?RecyclerView.ItemDecoration?{

????private?int?mSpace;

????public?GridSpaceItemDecoration(int?space,?RecyclerView?parent)?{
????????mSpace?=?space;
????????getRecyclerViewOffsets(parent);
????}

????/**
?????*?這個方法每次都會被調用
?????*?@param?outRect?Item?的矩形邊界
?????*?@param?view??ItemView
?????*?@param?parent?RecyclerView
?????*?@param?state?RecyclerView的狀態
?????*/
????@Override
????public?void?getItemOffsets(@NonNull?Rect?outRect,?@NonNull?View?view,?@NonNull?RecyclerView?parent,?@NonNull?RecyclerView.State?state)?{
????????super.getItemOffsets(outRect,?view,?parent,?state);
????????outRect.left?=?mSpace;
????}

????private?void?getRecyclerViewOffsets(RecyclerView?parent){
????????//?View?margin，
????????//?margin?為正，則?View?會距離邊界產生一個距離
????????//?margin?為負，則?View?會超出邊界產生一個距離
????????LinearLayout.LayoutParams?layoutParams?=?(LinearLayout.LayoutParams)?parent.getLayoutParams();
????????layoutParams.leftMargin?=?-mSpace;
????????parent.setLayoutParams(layoutParams);
????}
}

通過 layout inspector 工具，分析圖片可以看出：

1. 左邊的item

2. 中間的item

進一步分析發現是：左右兩邊的 WEqualsHImageView 寬度比中間的要寬1px

老師這是什么情況，如何解決？