//开放域层级
private static _openZone:Laya.Sprite;
//开放域纹理
private static _openZoneTexture:Laya.Texture;
public static openZone(vx:number=0,vy:number=0,scaleX:number=1,scaleY:number=1)
{
    if(!this._openZone)
    {
        //开放域
        this._openZone = new Laya.Sprite();
    }
    this._openZone.size(Laya.stage.width,Laya.stage.height);
    if(this._openZone.parent) return;
    console.log("打开开放域",Laya.Browser.onMiniGame)
    Laya.stage.addChild(this._openZone);
    this._openZone.x = vx;
    this._openZone.y = vy;
    if(Laya.Browser.onMiniGame){
        Laya.Browser.window.sharedCanvas.width = Laya.stage.designWidth;
        Laya.Browser.window.sharedCanvas.height = Laya.stage.designHeight;
        if(!this._openZoneTexture)
            this._openZoneTexture = new Laya.Texture(Laya.Browser.window.sharedCanvas);
        this._openZoneTexture.bitmap.alwaysChange = true;//小游戏使用，非常费，每帧刷新
        console.log("开放域大小",this._openZoneTexture.width,this._openZoneTexture.height,Laya.Browser.window.sharedCanvas.width,Laya.Browser.window.sharedCanvas.height);
        this._openZone.graphics.drawTexture(this._openZoneTexture,0,0,this._openZoneTexture.width,this._openZoneTexture.height,new Laya.Matrix(scaleX,0,0,scaleY));
    }
}

接字节跳动小游戏，绘制开放域排行榜时报this.bitmap.activeResource is not a function这个错，请问下有解决方法吗