如何在flutter android的默认闪屏中添加文本

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@color/white"/>
    <item>
        <bitmap
            android:gravity="center"
            android:src="@mipmap/ic_launcher"/>
    </item>
    <item>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Your App Name"
            android:textColor="@color/black"
            android:textSize="24sp"
            android:gravity="center_horizontal|bottom"
            android:paddingBottom="32dp"/>
    </item>
</layer-list>

<resources>
    <color name="white">#FFFFFF</color>
    <color name="black">#000000</color>
</resources>