Question

我在查看寻呼机中显示谷歌地图片段时遇到问题。我有一个活动，viewpager在其中，在viewpager的一个片段中有一个谷歌地图2.0片段。

片段布局：

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

    android:orientation="vertical" >

    <TextView
        android:id="@+id/no_profile_dialog_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="20dp"
        android:text="@string/about_screen_info" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginBottom="20dp"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:scaleType="fitCenter"
        android:src="@drawable/banner_bf" />

    <fragment
        android:id="@+id/about_map"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        class="com.google.android.gms.maps.SupportMapFragment"
        android:tag="AboutMapFragment"
        map:mapType="normal" />

</LinearLayout>

片段类：

public class AboutFragment extends Fragment {

    public static final String TAG = AboutFragment.class.getSimpleName();

    private SupportMapFragment mapFragment;
    private GoogleMap map;

    public static AboutFragment newInstance() {
        AboutFragment fragment = new AboutFragment();
        return fragment;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        return inflater.inflate(R.layout.fragment_about, container, false);
    }



    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        FragmentManager fm = getChildFragmentManager();
        mapFragment = (SupportMapFragment) fm.findFragmentById(R.id.about_map);

        if (mapFragment == null) {
            mapFragment = SupportMapFragment.newInstance();
            fm.beginTransaction().replace(R.id.about_map, mapFragment).commit();
            fm.executePendingTransactions();
        }

    }

    @Override
    public void onResume() {

        super.onResume();

        if (map == null) {
            map = mapFragment.getMap();
            if(map != null){
                Log.d(TAG, "map in AboutFragment initialized!");
                drawPositionOnMap();
            }else{
                Log.d(TAG, "map in AboutFragment is null!");
            }
        }
    }

    private void drawPositionOnMap() {

        LatLng latLng = new LatLng(20, 50);
        map.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 20));
        map.animateCamera(CameraUpdateFactory.zoomTo(15), 2000, null);
        map.addMarker(new MarkerOptions().position(latLng));
        map.setMyLocationEnabled(true);

    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        ((HomeActivity)getActivity()).getCurrentSlidingMenu().addIgnoredView(view.findViewById(R.id.about_map));
    }
}

所以，问题如下：当我切换到这个片段时，map似乎初始化，但是我看到静态地图快照不是可移动的地图，而是以0,0坐标为中心。

enter image description here

BUT！如果我锁定设备屏幕然后解锁它，地图会正常初始化！

有人可以帮助我吗？

Answer 1

我有同样的问题，我使用getFragmentManager（）而不是getChildFragmentManager（）解决了，我使用了相同的实现：

FragmentManager fm = getFragmentManager(); 
fragment = (SupportMapFragment) fm.findFragmentById(R.id.map_container);
if (fragment == null) {
    fragment = SupportMapFragment.newInstance();
    fm.beginTransaction().replace(R.id.map_container, fragment).commit();
    fm.executePendingTransactions();
}

我改变了，我的问题解决了......我希望这对你有帮助。

Answer 2

您是否尝试初始化地图onActivityCreated？

 if (mapFragment == null) {
        mapFragment = SupportMapFragment.newInstance();
        fm.beginTransaction().replace(R.id.about_map, mapFragment).commit();
        fm.executePendingTransactions();
    }
 if (map == null) {
        map = mapFragment.getMap();
        if(map != null){
            Log.d(TAG, "map in AboutFragment initialized!");
            drawPositionOnMap();
        }else{
            Log.d(TAG, "map in AboutFragment is null!");
        }
    }

嵌套的谷歌地图2.0片段显示静态图片

2 个答案: