Question

我试图用viewpager在一个片段中实现mapview，但是尽管我尝试了许多解决方案，但仍找不到适合我项目的正确解决方案。

这是我的logcat

2019-05-26 17:28:16.645 12469-12469/com.example.emrullah.booksharingappv4 E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.emrullah.booksharingappv4, PID: 12469
    android.view.InflateException: Binary XML file line #6: Binary XML file line #6: Error inflating class com.google.android.gms.maps.MapView
    Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class com.google.android.gms.maps.MapView
    Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Constructor.newInstance0(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:334)
        at android.view.LayoutInflater.createView(LayoutInflater.java:651)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:794)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:734)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:867)
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:828)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:519)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:427)
        at com.example.emrullah.booksharingappv4.Fragments.MapviewFragment.onCreateView(MapviewFragment.java:50)
        at android.support.v4.app.Fragment.performCreateView(Fragment.java:2439)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1460)
        at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1784)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1852)
        at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:802)
        at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2625)
        at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2411)
        at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2366)
        at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:2243)
        at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:654)
        at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:146)

这是我的片段

public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.mapview_fragment, container, false);

        mLocationList= new ArrayList<>();
        mLocList= new ArrayList<>();
        mLocList2= new ArrayList<>();
        mRef=FirebaseDatabase.getInstance().getReference().child("users");
        currentUser=FirebaseAuth.getInstance().getCurrentUser();
        getLatLongFromDb();
        split(mLocList);

        mMapView = view.findViewById(R.id.map_view);
        mMapView.onCreate(savedInstanceState);

        mMapView.onResume();

        try {
            MapsInitializer.initialize(getActivity().getApplicationContext());
        } catch (Exception e) {
            e.printStackTrace();
        }

        //Gets the Googlemap from Mapview and does the initialization stuff
        mMapView.getMapAsync(new OnMapReadyCallback() {
            @Override
            public void onMapReady(GoogleMap googleMap) {
                mMap = googleMap;
                mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);


                for (int i = 0;i<mLocList2.size();i++){
                    LatLng sydney = new LatLng(mLocList2.get(i),mLocList2.get(i+1));
                    mMap.addMarker(new MarkerOptions().position(sydney).title("Book dest:"+(i+1)));
                }
            }
        });


        return view;
    }
    @Override
    public void onResume() {
        super.onResume();

        if (mMapView != null)
            mMapView.onResume();
    }


    @Override
    public void onDestroy() {
        super.onDestroy();

        if (mMapView != null)
            mMapView.onDestroy();
    }


    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);

        if (mMapView != null)
            mMapView.onSaveInstanceState(outState);
    }
}

这是我的xml文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.google.android.gms.maps.MapView
        android:id="@+id/map_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:name="com.example.emrullah.booksharingappv4.Fragments.MapviewFragment"
        />
</RelativeLayout>

活动中的viewPager部分

public void setupViewPager(ViewPager viewPager) {
        SectionPageAdapter sectionPageAdapter = new SectionPageAdapter(getSupportFragmentManager());
        sectionPageAdapter.addFragment(new BookListFragment(), "BOOKS");
        sectionPageAdapter.addFragment(new MapviewFragment(), "BOOK MAP");
        sectionPageAdapter.addFragment(new SettingsFragment(), "SETTINGS");
        viewPager.setAdapter(sectionPageAdapter);
    }
    public void setUpTabIcons(){
        tabLayout.getTabAt(0).setIcon(navIcons[0]);
        tabLayout.getTabAt(1).setIcon(navIcons[1]);
        tabLayout.getTabAt(2).setIcon(navIcons[2]);
    }

我知道有一些类似的问题，例如我的，但我尝试了所有这些问题，但没有一个起作用。感谢您的帮助。

Answer 1

您正在尝试使用Android的原始版本的Google Maps支持（com.google.android.maps）。我们现在将其称为Maps V1。

这已失效，因为Maps V1已弃用4年以上。您将无法再获得其API密钥，因此即使您的代码正确无误，也无法正常工作。崩溃是因为错误指示，必须在MapActivity内部使用旧的MapView。

当前版本的Google Maps对Android的支持-Maps V2-具有非常不同的API，并且不涉及com.google.android.maps包中的类。

请通过官方documentation

阅读如何使用Maps V2

android.view.InflateException：二进制XML文件第6行：膨胀类com.google.android.gms.maps.MapView时出错

1 个答案: