无法为RecyclerView的DividerItemDecoration设置自定义可绘制

// 自定义分隔线Drawable
public class CustomDividerDrawable extends Drawable {
    // 实现自定义的绘制逻辑
    @Override
    public void draw(Canvas canvas) {
        // 绘制分隔线的形状和样式
        // ...
    }

    // 其他方法...
}

// 自定义ItemDecoration类
public class CustomItemDecoration extends RecyclerView.ItemDecoration {
    private Drawable mDivider;

    public CustomItemDecoration(Drawable divider) {
        mDivider = divider;
    }

    // 绘制分隔线
    @Override
    public void onDraw(Canvas canvas, RecyclerView parent, RecyclerView.State state) {
        // 获取RecyclerView的布局管理器
        RecyclerView.LayoutManager layoutManager = parent.getLayoutManager();

        // 遍历RecyclerView的所有可见列表项
        for (int i = 0; i < parent.getChildCount(); i++) {
            View child = parent.getChildAt(i);

            // 获取列表项的布局参数
            RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();

            // 计算分隔线的位置和大小
            int left = layoutManager.getDecoratedLeft(child);
            int right = layoutManager.getDecoratedRight(child);
            int top = layoutManager.getDecoratedBottom(child) + params.bottomMargin;
            int bottom = top + mDivider.getIntrinsicHeight();

            // 绘制分隔线
            mDivider.setBounds(left, top, right, bottom);
            mDivider.draw(canvas);
        }
    }

    // 设置分隔线的偏移量
    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        // 设置分隔线的偏移量，即分隔线与列表项之间的间距
        outRect.bottom = mDivider.getIntrinsicHeight();
    }
}

// 在Activity或Fragment中应用自定义ItemDecoration
public class MainActivity extends AppCompatActivity {
    private RecyclerView mRecyclerView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 初始化RecyclerView
        mRecyclerView = findViewById(R.id.recycler_view);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));

        // 创建自定义分隔线Drawable
        Drawable divider = getResources().getDrawable(R.drawable.custom_divider);

        // 创建自定义ItemDecoration对象
        RecyclerView.ItemDecoration itemDecoration = new CustomItemDecoration(divider);

        // 将自定义ItemDecoration应用到RecyclerView
        mRecyclerView.addItemDecoration(itemDecoration);

        // ...
    }
}