如何在android上制作polyline动画？

implementation 'com.google.android.gms:play-services-maps:17.0.0'

<com.google.android.gms.maps.MapView
    android:id="@+id/mapView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

private MapView mapView;
private GoogleMap googleMap;

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

    mapView = findViewById(R.id.mapView);
    mapView.onCreate(savedInstanceState);
    mapView.getMapAsync(this);
}

@Override
public void onMapReady(GoogleMap map) {
    googleMap = map;
    // 在地图上添加Polyline
    PolylineOptions polylineOptions = new PolylineOptions()
            .add(new LatLng(37.7749, -122.4194))
            .add(new LatLng(34.0522, -118.2437))
            .add(new LatLng(32.7157, -117.1611))
            .color(Color.RED)
            .width(5);
    googleMap.addPolyline(polylineOptions);
}

@Override
protected void onResume() {
    super.onResume();
    mapView.onResume();
}

@Override
protected void onPause() {
    super.onPause();
    mapView.onPause();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    mapView.onDestroy();
}

@Override
public void onLowMemory() {
    super.onLowMemory();
    mapView.onLowMemory();
}

// 创建ValueAnimator对象
ValueAnimator animator = ValueAnimator.ofFloat(0, 1);
animator.setDuration(3000); // 设置动画时长为3秒
animator.setInterpolator(new LinearInterpolator()); // 设置线性插值器，使动画平滑进行

// 设置动画更新监听器
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
    @Override
    public void onAnimationUpdate(ValueAnimator animation) {
        float fraction = animation.getAnimatedFraction(); // 获取动画完成的百分比
        // 根据百分比更新Polyline的样式
        PolylineOptions polylineOptions = new PolylineOptions()
                .add(new LatLng(37.7749, -122.4194))
                .add(new LatLng(34.0522, -118.2437))
                .add(new LatLng(32.7157, -117.1611))
                .color(Color.RED)
                .width(5 + fraction * 10); // 根据百分比改变宽度
        googleMap.clear(); // 清除之前的Polyline
        googleMap.addPolyline(polylineOptions); // 添加更新后的Polyline
    }
});

animator.start(); // 启动动画