android studio中的位置弹出菜单

<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/menu_item1"
        android:title="菜单项1" />
    <item
        android:id="@+id/menu_item2"
        android:title="菜单项2" />
</menu>

Button buttonShowPopup = findViewById(R.id.button_show_popup);
buttonShowPopup.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        showPopupMenu(v);
    }
});

private void showPopupMenu(View anchorView) {
    PopupMenu popupMenu = new PopupMenu(this, anchorView);
    popupMenu.getMenuInflater().inflate(R.menu.popup_menu, popupMenu.getMenu());
    popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            switch (item.getItemId()) {
                case R.id.menu_item1:
                    // 处理菜单项1的点击事件
                    break;
                case R.id.menu_item2:
                    // 处理菜单项2的点击事件
                    break;
            }
            return true;
        }
    });
    popupMenu.show();
}

popupMenu.setGravity(Gravity.END); // 将菜单与锚点对齐
popupMenu.setHorizontalOffset(10); // 设置水平偏移量
popupMenu.setVerticalOffset(20); // 设置垂直偏移量