如何像最近的谷歌设计那样让AppBarLayout浮动在内容之上

implementation 'com.android.support:design:28.0.0'

<android.support.design.widget.CoordinatorLayout>
    <android.support.design.widget.AppBarLayout>
        <!-- 定义应用栏的内容，如Toolbar、TabLayout等 -->
    </android.support.design.widget.AppBarLayout>

    <android.support.v4.widget.NestedScrollView>
        <!-- 定义内容布局 -->
    </android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

<android.support.design.widget.AppBarLayout>
    <android.support.v7.widget.Toolbar>
        <!-- 定义工具栏的样式和功能 -->
    </android.support.v7.widget.Toolbar>

    <android.support.design.widget.TabLayout>
        <!-- 定义选项卡的样式和功能 -->
    </android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>

AppBarLayout appBarLayout = findViewById(R.id.appBarLayout);
CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) appBarLayout.getLayoutParams();
AppBarLayout.Behavior behavior = new AppBarLayout.Behavior();
behavior.setDragCallback(new AppBarLayout.Behavior.DragCallback() {
    @Override
    public boolean canDrag(@NonNull AppBarLayout appBarLayout) {
        return false; // 禁止手动拖动AppBarLayout
    }
});
params.setBehavior(behavior);