RecyclerView 未完全展开以显示所有元素

RecyclerView 是 Android 平台上常用的控件之一，用于在列表或网格布局中展示大量数据。然而，有时候由于屏幕空间的限制，RecyclerView 无法完全展开以显示所有元素。本文将探讨如何解决这个问题，并给出相应的案例代码。

public class AutoExpandLayoutManager extends RecyclerView.LayoutManager {
    @Override
    public RecyclerView.LayoutParams generateDefaultLayoutParams() {
        return new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    }
    @Override
    public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
        detachAndScrapAttachedViews(recycler); // 清空屏幕上的所有 View
        int offsetY = 0;
        int itemCount = getItemCount();
        for (int i = 0; i < itemCount; i++) {
            View view = recycler.getViewForPosition(i);
            addView(view);
            measureChildWithMargins(view, 0, 0);
            int width = getDecoratedMeasuredWidth(view);
            int height = getDecoratedMeasuredHeight(view);
            layoutDecorated(view, 0, offsetY, width, offsetY + height);
            offsetY += height;
        }
    }
}

    android:id="@+id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

RecyclerView recyclerView = findViewById(R.id.recyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(adapter);