Question

我第一次调用片段时可以访问地图但是当我第二次调用片段时它会给我带来错误：

12-26 09:36:41.306: E/AndroidRuntime(28156): Caused by: java.lang.IllegalArgumentException: Binary XML file line #164: Duplicate id 0x7f090012, tag null, or parent id 0x0 with another fragment for com.google.android.gms.maps.SupportMapFragment

我在片段类中创建内部地图片段＆＃39; onCreateView（）：

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    // Defines the xml file for the fragment
    View view = inflater.inflate(R.layout.howtogo_fragment, container,
            false);

    if(map==null)
        map = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map))
            .getMap();
}

这是我片段的布局：

<LinearLayout>

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

</LinearLayout>

Answer 1

试试这个。

private static GoogleMap mMap;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        if (container == null) {
            return null;
        }
        view = (RelativeLayout) inflater.inflate(R.layout.howtogo_fragment, container, false);

               MapLoad(); // For setting up the MapFragment

        return view;
    }

    /***** Sets up the map if it is possible to do so *****/
    public static void MapLoad() {
        // Do a null check to confirm that we have not already instantiated the map.
        if (mMap == null) {
            // Try to obtain the map from the SupportMapFragment.
            mMap = ((SupportMapFragment) YOURACTIVITY.fragmentManager
                    .findFragmentById(R.id.map)).getMap();
            // Check if we were successful in obtaining the map.
            if (mMap != null)
                setUpMap();
        }
    }
private static void setUpMap() {
    // For showing a move to my loction button
    mMap.setMyLocationEnabled(true);
    // For dropping a marker at a point on the Map
  //  mMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longitude)).title("My Home").snippet("Home Address"));
    // For zooming automatically to the Dropped PIN Location
  //  mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(latitude,
        //    longitude), 12.0f));
}

Answer 2

您可以尝试我的代码： xml代码：

<RelativeLayout 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"
android:background="@android:color/white"
tools:context="com.example.catalyst_home.GeolocationActivity$PlaceholderFragment" >

<RelativeLayout
    android:id="@+id/map_root"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
</RelativeLayout>

片段java：

private GoogleMap mMap;
private SupportMapFragment mMapFragment;
private void setUpMapIfNeeded() {
    if (mMap == null) {
        mMapFragment = SupportMapFragment.newInstance();
        FragmentTransaction fragmentTransaction = getChildFragmentManager()
                .beginTransaction();
        fragmentTransaction.add(R.id.map_root, mMapFragment);
        fragmentTransaction.commit();
    }
}

在片段的onResum中：

@Override
public void onResume() {
    super.onResume();
    new Handler().postDelayed(new Runnable() {

        @Override
        public void run() {
            // TODO Auto-generated method stub
            mMap = mMapFragment.getMap();
            if (mMap != null) {
                mMap.setMyLocationEnabled(true);
            }
        }
    }, 2000);
}

内部地图片段在外部片段第二次调用时出现问题

2 个答案: