Java 为什么android studio不将svg文件显示为符号？

我想在android studio中添加svg文件作为符号

drawer_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:showIn = "navigation_view">
    
    <group android:checkableBehavior="single">
        <item
            android:id="@+id/nav_sctt"
            android:icon="@drawable/ic_sctt"
            android:title="School Timetable" />

        <item
            android:id="@+id/nav_dailytt"
            android:icon="@drawable/ic_dailytt"
            android:title="Daily Timetable" />
        <item
            android:id="@+id/nav_notes"
            android:icon="@drawable/ic_lecture_notes"
            android:title="Lecture Notes" />
        <item
            android:id="@+id/nav_calculator"
            android:icon="@drawable/ic_calculator"
            android:title="Calculator" />
    </group>

    <item android:title="Communicate">
        <menu>
            <item
                android:id="@+id/nav_share"
                android:icon="@drawable/ic_share"
                android:title="Share" />
        </menu>
    </item>
</menu>

ic_scitt.xml

    <vector android:height="24dp" android:viewportHeight="512"
    android:viewportWidth="512" android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
    <path android:fillColor="#fff" android:pathData="m10,162h492v340h-492z"/>
    <path android:fillColor="#ffcd69" android:pathData="m66,218h95.127v76h-95.127z"/>
    <path android:fillColor="#7dd9c2" android:pathData="m66,370h95.127v76h-95.127z"/>
    <path android:fillColor="#7dd9c2" android:pathData="m256.127,370h95.127v76h-95.127z"/>
    <path android:fillColor="#ff7d97" android:pathData="m66,294h95.127v76h-95.127z"/>
    <path android:fillColor="#ff7d97" android:pathData="m161.127,294h95.127v76h-95.127z"/>
    <path android:fillColor="#ff7d97" android:pathData="m351.127,294h95.127v76h-95.127z"/>
    <path android:fillColor="#ffcd69" android:pathData="m256.127,218h95.127v76h-95.127z"/>
    <path android:fillColor="#00ccf2" android:pathData="m10,50h492v112h-492z"/>
    <path android:fillColor="#e2e9ee" android:pathData="m396,76v-44c0,-12.15 9.85,-22 22,-22 12.15,0 22,9.85 22,22v44c0,12.15 -9.85,22 -22,22 -12.15,0 -22,-9.85 -22,-22z"/>
    <path android:fillColor="#e2e9ee" android:pathData="m288,76v-44c0,-12.15 9.85,-22 22,-22 12.15,0 22,9.85 22,22v44c0,12.15 -9.85,22 -22,22 -12.15,0 -22,-9.85 -22,-22z"/>
    <path android:fillColor="#e2e9ee" android:pathData="m180,76v-44c0,-12.15 9.85,-22 22,-22 12.15,0 22,9.85 22,22v44c0,12.15 -9.85,22 -22,22 -12.15,0 -22,-9.85 -22,-22z"/>
    <path android:fillColor="#e2e9ee" android:pathData="m72,76v-44c0,-12.15 9.85,-22 22,-22 12.15,0 22,9.85 22,22v44c0,12.15 -9.85,22 -22,22 -12.15,0 -22,-9.85 -22,-22z"/>
    <path android:fillColor="#FF000000" android:pathData="m502,40h-52v-8c0,-17.645 -14.355,-32 -32,-32s-32,14.355 -32,32v8h-44v-8c0,-17.645 -14.355,-32 -32,-32s-32,14.355 -32,32v8h-44v-8c0,-17.645 -14.355,-32 -32,-32s-32,14.355 -32,32v8h-44v-8c0,-17.645 -14.355,-32 -32,-32s-32,14.355 -32,32v8h-52c-5.523,0 -10,4.477 -10,10v452c0,5.523 4.477,10 10,10h492c5.523,0 10,-4.477 10,-10v-452c0,-5.523 -4.477,-10 -10,-10zM406,32c0,-6.617 5.383,-12 12,-12s12,5.383 12,12v44c0,6.617 -5.383,12 -12,12s-12,-5.383 -12,-12zM298,32c0,-6.617 5.383,-12 12,-12s12,5.383 12,12v44c0,6.617 -5.383,12 -12,12s-12,-5.383 -12,-12zM190,32c0,-6.617 5.383,-12 12,-12s12,5.383 12,12v44c0,6.617 -5.383,12 -12,12s-12,-5.383 -12,-12zM82,32c0,-6.617 5.383,-12 12,-12s12,5.383 12,12v44c0,6.617 -5.383,12 -12,12s-12,-5.383 -12,-12zM20,492v-320h191c5.523,0 10,-4.477 10,-10s-4.477,-10 -10,-10h-191v-92h42v16c0,17.645 14.355,32 32,32s32,-14.355 32,-32v-16h44v16c0,17.645 14.355,32 32,32s32,-14.355 32,-32v-16h44v16c0,17.645 14.355,32 32,32s32,-14.355 32,-32v-16h44v16c0,17.645 14.355,32 32,32s32,-14.355 32,-32v-16h42v92h-191c-5.523,0 -10,4.477 -10,10s4.477,10 10,10h191v320z"/>
    <path android:fillColor="#FF000000" android:pathData="m446,208h-380c-5.523,0 -10,4.477 -10,10v228c0,5.523 4.477,10 10,10h380c5.523,0 10,-4.477 10,-10v-228c0,-5.523 -4.477,-10 -10,-10zM76,304h75.127v56h-75.127zM171.127,304h75v56h-75zM246.127,284h-75v-56h75zM266.127,228h75v56h-75zM246.127,380v56h-75v-56zM266.127,380h75v56h-75zM266.127,360v-56h75v56zM361.127,304h74.873v56h-74.873zM436,284h-74.873v-56h74.873zM151.127,228v56h-75.127v-56zM76,380h75.127v56h-75.127zM361.127,436v-56h74.873v56z"/>
    <path android:fillColor="#FF000000" android:pathData="m256,172c2.63,0 5.21,-1.07 7.07,-2.93s2.93,-4.44 2.93,-7.07 -1.07,-5.21 -2.93,-7.07 -4.44,-2.93 -7.07,-2.93 -5.21,1.07 -7.07,2.93 -2.93,4.44 -2.93,7.07 1.07,5.21 2.93,7.07 4.44,2.93 7.07,2.93z"/>
</vector>

我在剪贴画格式中使用了同样的方法。它工作得很好。 此外，这些符号作为预览显示在drawer_menu.xml的左侧。 我错过什么了吗