主要设置屏幕适配的代码是下面，大部分手机是好的，有少部分andriod机器有比较大的概率出现半屏的情况。请问下是引擎不兼容呢，还是代码写的不完善
 class Main {

        private _roomId = 0;

        constructor(roomId?: number) {
            this._roomId = roomId;
            Laya.init(750, 1218, Laya.WebGL);
            Laya.Browser.document.title = 'GG游戏;
            if (Laya.Browser.onPC) {
                //设置舞台缩放模式
                Laya.stage.scaleMode = Laya.Stage.SCALE_SHOWALL;
                Laya.stage.screenMode = Laya.Stage.SCREEN_NONE;
            } else {
                Laya.stage.scaleMode = Laya.Stage.SCALE_FIXED_WIDTH;
                Laya.stage.screenMode = Laya.Stage.SCREEN_VERTICAL;
            }
            Laya.stage.bgColor = "#222d39";
            //设置舞台对齐模式
            Laya.stage.alignH = Laya.Stage.ALIGN_CENTER;
            Laya.stage.alignV = Laya.Stage.ALIGN_MIDDLE;
            //Laya.stage.frameRate = Laya.Stage.FRAME_MOUSE;
            Laya.stage.frameRate = Laya.Stage.FRAME_SLOW;
            //注册自定义按钮控件
            Laya.View.regComponent("ScaleButton", ScaleButton);

            Laya.loader.load("res/atlas/com/loading.atlas", Laya.Handler.create(this, this.loadGame));
        }


        private loadGame(): void {
            var resArray = [
                { url: "res/atlas/lobby/create_room.atlas", type: Laya.Loader.ATLAS },
                                .......
            ];
            let createGameScene = () => {
                Laya.stage.width = 1218;
                Laya.stage.height = 750;
                if (Laya.Browser.onPC) {
                    //设置舞台缩放模式
                    Laya.stage.scaleMode = Laya.Stage.SCALE_SHOWALL;
                    Laya.stage.screenMode = Laya.Stage.SCREEN_NONE;
                } else {
                    Laya.stage.scaleMode = Laya.Stage.SCALE_FIXED_WIDTH;
                    Laya.stage.screenMode = Laya.Stage.SCREEN_HORIZONTAL;
                }
                AppConfig.init();
                let game = new Game(Laya.stage);
                if (!this._roomId && this.getGets()["roomId"]) {
                    this._roomId = parseInt(this.getGets()["roomId"]);
                }
                if (this._roomId) {
                    game.enterRoom(this._roomId);
                }
            }
            AppFunction.showLoadingView_fullScreen(resArray, createGameScene, null, "正在进入游戏...");
        }

        private getGets() {
            var tempUrl: String = Laya.Browser.window.location.href;
            var u = tempUrl.split("?");
            var gets: Object = {};
            if (u[1]) {
                u = u[1].split("&");
                for (var p of u) {
                    var param = p.split("=");
                    gets[param[0]] = param[1];
                }
            }
            return gets;
        }

    }