HarmonyOS鸿蒙Next中关于pageSlider的问题，具体看正文，不知道怎么描述

HarmonyOS鸿蒙Next中关于pageSlider的问题，具体看正文，不知道怎么描述 首先这是一个tab栏和pageSlider的联动

tab栏三个对应pageSlider的三个

点击地图栏后，定位完成。

之后在返回首页栏，点击设备删除这一项，跳转到设备删除的页面，这个页面是空的，但是会加载地图的界面，如下所示

设备删除页面的代码（里面什么都没有）

<?xml version="1.0" encoding="utf-8"?>
<DirectionalLayout
    xmlns:ohos="http://schemas.huawei.com/res/ohos"
    ohos:height="match_parent"
    ohos:width="match_parent"
    ohos:orientation="vertical"/>

以下是整个mainAbility的代码，我的那一栏代码不涉及到此问题，故没有加入

public class MainAbilitySlice extends AbilitySlice implements LocationSource {
    EasyDialog.Builder builder = EasyDialog.builder(this, DefaultTypeConfig.ALERT_DIALOG);
    int id=0;
    User user;
    private MapView mapView;
    private AMap aMap;
    private Locator locator;
    private MylocatorCallBack myLocatorCallback = new MylocatorCallBack();
    private static final String PERM_LOCATION = "ohos.permission.LOCATION";
    private OnLocationChangedListener mListener = null;
    public static final int MY_LOCATION_PERMISSION = 6;
    private static final HiLogLabel hilog = new HiLogLabel(HiLog.DEBUG, 0x0000, "APP_LOG");
    GeoConvert geoConvert = new GeoConvert();

    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_ability_main);
        if(intent!=null){
            IntentParams params = intent.getParams();
            id = (int) params.getParam("userid");
        }
        OrmContext context = Utils.getUserOrmContext(this);
        OrmPredicates predicates = new OrmPredicates(User.class)
                .equalTo("userid",id);
        List<User> users = context.query(predicates);
        user = users.get(0);
        context.close();
        int[] icons = new int[3];
        icons[0] = ResourceTable.Media_ic_public_home;
        icons[1] = ResourceTable.Media_ic_gallery_map_all;
        icons[2] = ResourceTable.Media_ic_public_settings;
        TabList tablist = findComponentById(ResourceTable.Id_tab_list);
        tablist.removeAllComponents();
        String[] tablistTags = {"首页","地图","我的"};
        for(int i=0;i<tablistTags.length;i++){
            TabList.Tab tab = tablist.new Tab(this);
            tab.setText(tablistTags[i]);
            setTabImage(tab,icons[i]);
            tablist.addTab(tab);
        }
        List<Integer> layoutFileIds = new ArrayList<>();
        layoutFileIds.add(ResourceTable.Layout_ability_main_index);
        layoutFileIds.add(ResourceTable.Layout_ability_main_map);
        layoutFileIds.add(ResourceTable.Layout_ability_main_user);
        PageSlider pageSlider = findComponentById(ResourceTable.Id_page_slider);
        pageSlider.setProvider(new TabPageSliderProvider(layoutFileIds,this));
        tablist.addTabSelectedListener(new TabList.TabSelectedListener() {
            @Override
            public void onSelected(TabList.Tab tab) {
                int index = tab.getPosition();
                pageSlider.setCurrentPage(index);
                if(index==0){
                    initIndex(user);
                }else if(index==1){
                    initMapView();
                }else if(index==2){
                    inituser(user,id);
                }
            }
            @Override
            public void onUnselected(TabList.Tab tab) {}
            @Override
            public void onReselected(TabList.Tab tab) {}
        });
        tablist.selectTabAt(0);
        pageSlider.setSlidingPossible(false);
    }

    private void inituser(User user, int id) {
        Text userid = findComponentById(ResourceTable.Id_userid);
        Text username = findComponentById(ResourceTable.Id_username);
        userid.setText(user.getUserid()+"");
        username.setText(user.getUserName());
        Button changepwdbtn = findComponentById(ResourceTable.Id_changepwd_btn);
        changepwdbtn.setClickedListener(component -> {
            Intent intent = new Intent();
            intent.setParam("userid",id);
            present(new ChangepwdAbilitySlice(),intent);
        });
        Button quitbtn = findComponentById(ResourceTable.Id_quit_btn);
        quitbtn.setClickedListener(component -> {
            OrmContext context1 = Utils.getTokenOrmContext(this);
            OrmPredicates predicates1 = new OrmPredicates(Token.class);
            predicates1.clear();
            context1.delete(predicates1);
            Intent intent1 = new Intent();
            present(new LoginAbilitySlice(),intent1);
        });
    }

    private void initMapView() {
        mapView = new MapView(this);
        DirectionalLayout layout = findComponentById(ResourceTable.Id_map_directionlayout);
        DirectionalLayout.LayoutConfig config = new DirectionalLayout.LayoutConfig(
                DirectionalLayout.LayoutConfig.MATCH_PARENT, 1785);
        mapView.setLayoutConfig(config);
        layout.addComponent(mapView);
        mapView.onCreate(null);
        mapView.onResume();
        requestLocationPermission();
        aMap = mapView.getMap();
        requestLocationPermission();
        aMap.setOnMyLocationChangeListener(new AMap.OnMyLocationChangeListener() {
            @Override
            public void onMyLocationChange(Location location) {
            }
        });
        aMap.setOnMapLoadedListener(new AMap.OnMapLoadedListener() {
            @Override
            public void onMapLoaded() {
                // todo
            }
        });
        aMap.setOnMapTouchListener(new AMap.OnMapTouchListener() {
            @Override
            public void onTouch(MotionEvent motionEvent) {
                System.out.println("~~~~~~~~~~~~~~~~~~~~"+motionEvent.getX()+"~~~~~~~~~~"+motionEvent.getY());
                int posX = (int) motionEvent.getX();
                int posY = (int) motionEvent.getY();
                Point point = new Point(posX,posY);
                LatLng latLng = aMap.getProjection().fromScreenLocation(point);
                List<GeoAddress> geo = null;
                try {
                    geo = geoConvert.getAddressFromLocation(latLng.latitude,latLng.longitude,1);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                String location = geo.get(0).getAdministrativeArea()
                        +geo.get(0).getSubAdministrativeArea()
                        +geo.get(0).getRoadName()
                        +geo.get(0).getSubRoadName();
                builder.setTitle("位置")
                        .setMessage(location)
                        .setOnCancelListener(dialog -> Log.d(TAG, "onCancel"))
                        .setOnDismissListener(dialog -> Log.d(TAG, "onDismiss"))
                        .setNeutralButton("know", null)
                        .setPositiveButton("ok", (dialog, which) -> {
                            final Marker marker = aMap.addMarker(new MarkerOptions().position(latLng));
                            Log.d(TAG, "onClick ok");
                        })
                        .setNegativeButton("cancel", (dialog, which) -> dialog.dismiss())
                        .setCancelable(true);
                builder.build().show();
            }
        });
    }

    public void requestLocationPermission(){
        if (verifySelfPermission("ohos.permission.LOCATION") != IBundleManager.PERMISSION_GRANTED ){
            if (canRequestPermission("ohos.permission.LOCATION") ){
                requestPermissionsFromUser(
                        new String[]{"ohos.permission.LOCATION","ohos.permission.LOCATION_IN_BACKGROUND"},
                        MY_LOCATION_PERMISSION
                );
            }else{
                new ToastDialog(getContext()).setText("请进入手机系统【设置】中，开启应用的定位权限").show();
            }
        }else{
            new ToastDialog(getContext()).setText("此应用已授权,可进行定位功能的初始化").show();
            HiLog.info(hilog,"此应用已授权，开始定位" );
            isOpenLocationSwitch();
        }
    }

    public void isOpenLocationSwitch(){
        HiLog.info(hilog,"获取定位器" );
        locator = new Locator(getContext());
        if(locator.isLocationSwitchOn()){
            HiLog.info(hilog,"[位置信息]开关已开启" );
            onLocationChangeListener();
        } else {
            new ToastDialog(getContext()).setText("请在控制中心打开【位置信息】开关，以便获取当前所在位置").show();
            locator.stopLocating(myLocatorCallback);
        }
    }

    public void onLocationChangeListener() {
        HiLog.info(hilog,"定位功能开始" );
        RequestParam requestParam = new RequestParam(RequestParam.SCENE_NAVIGATION);
        HiLog.info(hilog,"开启定位" );
        locator.startLocating(requestParam,myLocatorCallback);
        HiLog.info(hilog,"绘制蓝点");
        getMyLocationStyle();
    }

    private void getMyLocationStyle(){
        HiLog.info(hilog,"绘制定位小蓝点" );
        MyLocationStyle locationStyle = new MyLocationStyle();
        aMap.setMyLocationStyle(locationStyle);
        locationStyle.interval(1000);
        aMap.setMyLocationStyle(locationStyle);
        aMap.getUiSettings().setMyLocationButtonEnabled(false);
        aMap.setLocationSource(this);
        aMap.setMyLocationEnabled(true);
    }

    @Override
    public void activate(OnLocationChangedListener onLocationChangedListener) {
        mListener = onLocationChangedListener;
    }

    @Override
    public void deactivate() {
        mListener = null;
    }

    public class MylocatorCallBack implements LocatorCallback {
        @Override
        public void onLocationReport(final Location location) {
            HiLog.info(hilog,"AMap定位，Latitude为：" + location.getLatitude()+",Longitude为：" + location.getLongitude());
            getUITaskDispatcher().asyncDispatch(() -> {
                getLocation(location);
            });
        }
        @Override
        public void onStatusChanged(int i) {}
        @Override
        public void onErrorReport(int i) {}
    }

    public void getLocation(Location location){
        LatLng latLng = new LatLng(location.getLatitude(),location.getLongitude());
        System.out.println("Latitude"+location.getLatitude()+"Longtitude"+location.getLongitude());
        aMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng,16));
        HiLog.info(hilog,"AMap定位，Latitude为：" + location.getLatitude()+",Longitude为：" + location.getLongitude());
        getMyLocationStyle();
        mListener.onLocationChanged(location);
    }

    @Override
    public void onActive() {
        super.onActive();
    }

    @Override
    public void onForeground(Intent intent) {
        super.onForeground(intent);
    }

    @Override
    protected void onStop() {
        super.onStop();
        if (mapView != null) {
            mapView.onDestroy();
        }
    }
}

第一次写鸿蒙开发，代码可能有点乱。麻烦各位了，还请大佬们不吝赐教。

如果还有什么需要的，我一定及时补充