I am trying to use the new Google Play Services Lib and embbed Maps in side the Maps Fragment as below
PlaceMapsFragment.java
public class PlaceMapsFragment extends SupportMapFragment {
private GoogleMap mMap;
private LatLng mPosFija;
public PlaceMapsFragment() {
super();
}
public static PlaceMapsFragment newInstance(LatLng posicion) {
PlaceMapsFragment frag = new PlaceMapsFragment();
frag.mPosFija = posicion;
return frag;
}
@Override
public GoogleMap getMap() {
// TODO Auto-generated method stub
return super.getMap();
}
@Override
public void onCreate(Bundle arg0) {
// TODO Auto-generated method stub
super.onCreate(arg0);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = super.onCreateView(inflater, container, savedInstanceState);
//initMap();
return view;
}
private void initMap() {
UiSettings settings = getMap().getUiSettings();
settings.setAllGesturesEnabled(false);
settings.setMyLocationButtonEnabled(false);
getMap().moveCamera(CameraUpdateFactory.newLatLngZoom(mPosFija, 16));
getMap().addMarker(
new MarkerOptions().position(mPosFija)
.icon(BitmapDescriptorFactory
.fromResource(R.drawable.marker)));
}
}
Error
12-10 01:44:54.416: E/AndroidRuntime(32716): FATAL EXCEPTION: main
12-10 01:44:54.416: E/AndroidRuntime(32716): java.lang.NullPointerException
12-10 01:44:54.416: E/AndroidRuntime(32716): at maps.ar.b.a(Unknown Source)
12-10 01:44:54.416: E/AndroidRuntime(32716): at maps.y.h.a(Unknown Source)
12-10 01:44:54.416: E/AndroidRuntime(32716): at maps.y.au.a(Unknown Source)
12-10 01:44:54.416: E/AndroidRuntime(32716): at maps.y.ae.moveCamera(Unknown Source)
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.google.android.gms.maps.internal.IGoogleMapDelegate$Stub.onTransact(IGoogleMapDelegate.java:83)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.os.Binder.transact(Binder.java:297)
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.google.android.gms.maps.internal.IGoogleMapDelegate$a$a.moveCamera(Unknown Source)
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.google.android.gms.maps.GoogleMap.moveCamera(Unknown Source)
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.m7.nomad.PlaceMapsFragment.initMap(PlaceMapsFragment.java:55)
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.m7.nomad.PlaceMapsFragment.onCreateView(PlaceMapsFragment.java:46)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1460)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:911)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:461)
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.m7.nomad.PlaceActivity$TabManager.onTabChanged(PlaceActivity.java:153)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.widget.TabHost.invokeOnTabChangeListener(TabHost.java:379)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.widget.TabHost.setCurrentTab(TabHost.java:364)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.widget.TabHost$2.onTabSelectionChanged(TabHost.java:150)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.widget.TabWidget$TabClickListener.onClick(TabWidget.java:540)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.view.View.performClick(View.java:3591)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.view.View$PerformClick.run(View.java:14263)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.os.Handler.handleCallback(Handler.java:605)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.os.Handler.dispatchMessage(Handler.java:92)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.os.Looper.loop(Looper.java:137)
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.app.ActivityThread.main(ActivityThread.java:4507)
12-10 01:44:54.416: E/AndroidRuntime(32716): at java.lang.reflect.Method.invokeNative(Native Method)
12-10 01:44:54.416: E/AndroidRuntime(32716): at java.lang.reflect.Method.invoke(Method.java:511)
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
12-10 01:44:54.416: E/AndroidRuntime(32716): at dalvik.system.NativeStart.main(Native Method)
Manifest File
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.m7.nomad"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="16" />
<permission
android:name="com.example.newmapview.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.newmapview.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/Theme.Sherlock" >
<activity
android:name="com.m7.nomad.SplashActivity"
android:label="@string/app_name" >
</activity>
<activity
android:name="com.m7.nomad.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.m7.nomad.PlaceActivity"
android:label="@string/app_name" >
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="XXXXXXXXXXX" />
</application>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
</manifest>
I have a SherlockFragmentActivity which has a TabHost which has two Fragments attached to it. I am trying to render the map inside one of those Tab Fragments
Edit
I have got the Map to be Displayed but now i am not able to Reference the Map and Change the Map to Hybrid. Basically i need to Reference the Map with out getting the Null error.
Sloy
In onCreateView() you must call its parent. Check my solution in https://stackoverflow.com/a/13734470/835787 closer. The map is initialized in the onCreateView() method of MapFragment, if you don't call it the map will be null.
- super.onCreate(savedInstanceState); should be called in onCreate(), not onCreateView()
If you want to override onCreateView(), it should be something like:
@Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = super.onCreateView(inflater, container, savedInstanceState); // Do any other initialization you need, but note that the MapView already exists inside v setUpMapIfNeeded(v); return v; }
I don't know is it helps or not but you should set your package here:
<permission
android:name="com.example.newmapview.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.newmapview.permission.MAPS_RECEIVE" />
I solved this error by checking "Copy projects into workspace" while importing the Google Play Services lib.
More info here: http://developer.android.com/google/play-services/setup.html
来源：https://stackoverflow.com/questions/13764266/android-supportmapfragment-exception-error