android - 谷歌地图 V2 android 应用程序中的空数组错误

Question

我正在尝试将 google map 集成到 fragment 中......应用程序之前运行良好但突然崩溃

我检查了以下链接...但这些都不适合我 Attempt to get length of null array in google maps V2 android app

Why google map v2 suddenly crashed by java.lang.NullPointerException: Attempt to get length of null array?

我的代码是:

@Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        MapsInitializer.initialize(getActivity());



        View bottomSheet = fragmentLayout.findViewById(R.id.bottomSheet);

        fap = (FloatingActionButton) fragmentLayout.findViewById(R.id.fap);
        fap.setOnClickListener(this);
        bottomSheetTitle = (TextView) fragmentLayout.findViewById(R.id.bottomSheetTitle);
        bottomSheetAddress = (TextView) fragmentLayout.findViewById(R.id.bottomSheetAddress);

        bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);


        bottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
            @Override
            public void onStateChanged(@NonNull View bottomSheet, int newState) {
                if (newState == BottomSheetBehavior.STATE_HIDDEN) {
                    fap.setVisibility(View.GONE);
//                    text1.setText("Collapse Me!");
                } else {
                    fap.setVisibility(View.VISIBLE);
//                    text1.setText("Expand Me!");
                }
            }

            @Override
            public void onSlide(@NonNull View bottomSheet, float slideOffset) {

            }


        });
        bottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
//        getDetails(1);
//        bottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);


        switch (GooglePlayServicesUtil.isGooglePlayServicesAvailable(getActivity())) {
            case ConnectionResult.SUCCESS:
                Toast.makeText(getActivity(), "SUCCESS", Toast.LENGTH_SHORT).show();
                mapView = (MapView) fragmentLayout.findViewById(R.id.map);
                if(mapView != null)
                    mapView.onCreate(savedInstanceState);
                // Gets to GoogleMap from the MapView and does initialization stuff
                if (mapView != null) {
                    Toast.makeText(getActivity(), "Getting map", Toast.LENGTH_SHORT).show();
                    mapView.getMapAsync(this);
                }
                break;
            case ConnectionResult.SERVICE_MISSING:
                Toast.makeText(getActivity(), "SERVICE MISSING", Toast.LENGTH_SHORT).show();
                break;
            case ConnectionResult.SERVICE_VERSION_UPDATE_REQUIRED:
                Toast.makeText(getActivity(), "UPDATE REQUIRED", Toast.LENGTH_SHORT).show();
                break;
            default:
//                Toast.makeText(getActivity(), GooglePlayServicesUtil.isGooglePlayServicesAvailable(getActivity()), Toast.LENGTH_SHORT).show();
                break;
        }

//        googleMap.setMyLocationEnabled(true);
    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
//        Toast.makeText(getActivity(), "Map is ready to use", Toast.LENGTH_SHORT).show();
        this.map = googleMap;
        map.getUiSettings().setMyLocationButtonEnabled(false);
        if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            Toast.makeText(getActivity(), "Oops permission denied", Toast.LENGTH_SHORT).show();
            return;
        }
        map.setMyLocationEnabled(true);
        map.getUiSettings().setMyLocationButtonEnabled(true);
        mClusterManager = new ClusterManager<Location>(getActivity(), map);

        map.setOnCameraIdleListener(new GoogleMap.OnCameraIdleListener() {
            @Override
            public void onCameraIdle() {
//                Toast.makeText(getActivity(), "camera moved", Toast.LENGTH_SHORT).show();
                getLocationByRadius(map.getCameraPosition().target.latitude, map.getCameraPosition().target.longitude);
            }
        });

        map.setOnCameraChangeListener(new GoogleMap.OnCameraChangeListener() {
            @Override
            public void onCameraChange(CameraPosition cameraPosition) {
                getLocationByRadius(map.getCameraPosition().target.latitude, map.getCameraPosition().target.longitude);
            }
        });

        map.setOnCameraIdleListener(mClusterManager);
        map.setOnMarkerClickListener(mClusterManager);

        mClusterManager.setOnClusterItemClickListener(new ClusterManager.OnClusterItemClickListener<Location>() {
            @Override
            public boolean onClusterItemClick(Location location) {
                getDetails(location.getLocationId());
                return false;
            }

        });


        checkPermission();


    }

xml布局:

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context="rollwithme.com.rollwithme.Fragments.ParkingFragment" app:layout_behavior="@string/appbar_scrolling_view_behavior">

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

    <include layout="@layout/fragment_location_details" />

    <android.support.design.widget.FloatingActionButton
        android:src="@drawable/ic_expand_less_white_24dp"
        android:id="@+id/fap"
        app:fabSize="normal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_anchor="@id/bottomSheet"
        android:visibility="gone"
        app:backgroundTint="@color/colorPrimary"
        app:layout_anchorGravity="top|right|end"
        android:layout_marginRight="@dimen/cardViewPadding"/>

</android.support.design.widget.CoordinatorLayout>

我正在 lg g3 上测试.....应用程序在华为 Y6 Pro 中运行良好.....过去也适用于 g3.....

我得到的错误消息是

FATAL EXCEPTION: main
                                                                         Process: rollwithme.com.rollwithme, PID: 4401
                                                                         java.lang.NullPointerException: Attempt to get length of null array
                                                                             at maps.G.a.a(Unknown Source)
                                                                             at maps.V.N.a(Unknown Source)
                                                                             at maps.D.e.a(Unknown Source)
                                                                             at maps.D.p.a(Unknown Source)
                                                                             at maps.ad.ae.a(Unknown Source)
                                                                             at maps.ad.t.a(Unknown Source)
                                                                             at maps.ad.R.a(Unknown Source)
                                                                             at uo.onTransact(:com.google.android.gms.DynamiteModulesB:66)
                                                                             at android.os.Binder.transact(Binder.java:380)
                                                                             at com.google.android.gms.maps.internal.IMapViewDelegate$zza$zza.onCreate(Unknown Source)
                                                                             at com.google.android.gms.maps.MapView$zza.onCreate(Unknown Source)
                                                                             at com.google.android.gms.dynamic.zza$3.zzb(Unknown Source)
                                                                             at com.google.android.gms.dynamic.zza$1.zza(Unknown Source)
                                                                             at com.google.android.gms.maps.MapView$zzb.zzbru(Unknown Source)
                                                                             at com.google.android.gms.maps.MapView$zzb.zza(Unknown Source)
                                                                             at com.google.android.gms.dynamic.zza.zza(Unknown Source)
                                                                             at com.google.android.gms.dynamic.zza.onCreate(Unknown Source)
                                                                             at com.google.android.gms.maps.MapView.onCreate(Unknown Source)
                                                                             at rollwithme.com.rollwithme.Fragments.ParkingFragment.onActivityCreated(ParkingFragment.java:163)
                                                                             at android.support.v4.app.Fragment.performActivityCreated(Fragment.java:2089)
                                                                             at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1133)
                                                                             at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1290)
                                                                             at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:801)
                                                                             at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:1638)
                                                                             at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:679)
                                                                             at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:143)
                                                                             at android.support.v4.view.ViewPager.populate(ViewPager.java:1240)
                                                                             at android.support.v4.view.ViewPager.populate(ViewPager.java:1088)
                                                                             at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1614)
                                                                             at android.view.View.measure(View.java:17496)
                                                                             at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
                                                                             at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1438)
                                                                             at android.widget.LinearLayout.measureVertical(LinearLayout.java:724)
                                                                             at android.widget.LinearLayout.onMeasure(LinearLayout.java:615)
                                                                             at android.view.View.measure(View.java:17496)
                                                                             at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
                                                                             at android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:700)
                                                                             at android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:767)
                                                                             at android.view.View.measure(View.java:17496)
                                                                             at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
                                                                             at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
                                                                             at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:135)
                                                                             at android.view.View.measure(View.java:17496)
                                                                             at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
                                                                             at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1438)
                                                                             at android.widget.LinearLayout.measureVertical(LinearLayout.java:724)
                                                                             at android.widget.LinearLayout.onMeasure(LinearLayout.java:615)
                                                                             at android.view.View.measure(View.java:17496)
                                                                             at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
                                                                             at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
                                                                             at android.view.View.measure(View.java:17496)
                                                                             at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
                                                                             at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1438)
                                                                             at android.widget.LinearLayout.measureVertical(LinearLayout.java:724)
                                                                             at android.widget.LinearLayout.onMeasure(LinearLayout.java:615)
                                                                             at android.view.View.measure(View.java:17496)
                                                                             at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
                                                                             at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
                                                                             at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2636)
                                                                            at android.view.View.measure(View.java:17496

Answer 1

我无法使用 mapview 解决它后来我切换到 supportMapFragment....它解决了我的问题...感谢谷歌

对于其他人，我点击了以下链接...谢谢 :)

https://developers.google.com/android/reference/com/google/android/gms/maps/SupportMapFragment

https://developers.google.com/maps/documentation/android-api/map