Google Maps API v2 not working

Question

I am trying to build an application using Google Maps API v2 but the thing is, the application keeps giving me force closes although i followed all the required instructions.

Here is the android part

import android.support.v4.app.FragmentActivity;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;

public class GPSonMap extends FragmentActivity{

 MapView map;
 MapController controller;
 LocationManager locationManager;
 LocationListener listener;
 PendingIntent pendingIntent ;
 Criteria criteria;
 MapOverlay overlay;


@Override
public void onCreate(Bundle onsaved)
{
    super.onCreate(onsaved);
    setContentView(R.layout.map);
    Log.d("", "entered");


    map = (MapView)findViewById(R.id.mapView);
    }

and here is the XML

<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"
tools:context=".MapsActivity" >

<fragment

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

</RelativeLayout>

and this is my Manifest

        <?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.bachelor.bond"
        android:versionCode="1"
        android:versionName="1.0" >

        <uses-sdk
            android:minSdkVersion="14"
            android:targetSdkVersion="17" />
      <!--   <permission
              android:name="com.example.example.permission.MAPS_RECEIVE"
              android:protectionLevel="signature"/>
            <uses-permission android:name="com.bachelor.bond.permission.MAPS_RECEIVE"/>. -->

           <uses-permission android:name="android.permission.INTERNET" />
         <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
        <permission android:name="com.example.example.permission.C2D_MESSAGE" android:protectionLevel="signature" />
    <uses-permission android:name="com.example.example.permission.C2D_MESSAGE" /> 

    <!-- App receives GCM messages. -->
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <!-- GCM connects to Google Services. -->
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
        <uses-permission android:name="android.permission.READ_PHONE_STATE"/> 
    <!-- GCM requires a Google account. -->
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <!-- Keeps the processor from sleeping when a message is received. -->
    <uses-permission android:name="android.permission.WAKE_LOCK"
         />
    <uses-permission android:name="com.example.example.permission.MAPS_RECEIVE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
      <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />  
    <!-- Permission to vibrate -->
        <uses-permission android:name="android.permission.VIBRATE"/>
        <uses-permission android:name = "android.permission.ACCESS_FINE_LOCATION"/>

        <permission 
        android:name="com.example.example.permission.MAPS_RECEIVE" 
        android:protectionLevel="signature"></permission>

        <uses-feature 
        android:glEsVersion="0x00020000" 
        android:required="true"/>
        <application
            android:allowBackup="true"
            android:icon="@drawable/ic_launcher"
            android:label="@string/app_name">
            <uses-library android:name="com.google.android.maps" />
             <activity
                android:name=".GPSonMap"
                android:label="@string/app_name"
                 > <intent-filter>
                    <action android:name="android.intent.action.MAIN" />

                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>

            </activity>

             <uses-library android:name="com.google.android.maps" />
             <intent-filter>
        <action android:name="com.google.android.c2dm.intent.RECEIVE" />
        <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
        <category android:name="com.example.example" />
      </intent-filter>
              <receiver android:name="com.google.android.gcm.GCMBroadcastReceiver" 
                 android:permission="com.google.android.c2dm.permission.SEND" >

    </receiver>
     <service android:name=".GCMIntentService" />
     <activity android:name="Login"></activity>

     <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="****"/>

        </application>

    </manifest>

And the Log Cat output

02-15 00:42:35.257: E/AndroidRuntime(2693): FATAL EXCEPTION: main
02-15 00:42:35.257: E/AndroidRuntime(2693): java.lang.RuntimeException: Unable to start         activity ComponentInfo{com.bachelor.bond/com.dxample.example.GPSonMap}:     android.view.InflateException: Binary XML file line #7: Error inflating class fragment
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.os.Handler.dispatchMessage(Handler.java:99)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.os.Looper.loop(Looper.java:137)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread.main(ActivityThread.java:5039)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at java.lang.reflect.Method.invokeNative(Native Method)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at java.lang.reflect.Method.invoke(Method.java:511)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at dalvik.system.NativeStart.main(Native Method)
02-15 00:42:35.257: E/AndroidRuntime(2693): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.Activity.setContentView(Activity.java:1881)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at com.bachelor.bond.GPSonMap.onCreate(GPSonMap.java:54)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.Activity.performCreate(Activity.java:5104)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
02-15 00:42:35.257: E/AndroidRuntime(2693):     ... 11 more
02-15 00:42:35.257: E/AndroidRuntime(2693): Caused by:         android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment     com.google.android.gms.maps.SupportMapFragment: make sure class name exists, is public, and     has an empty constructor that is public
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.support.v4.app.Fragment.instantiate(Fragment.java:401)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.support.v4.app.Fragment.instantiate(Fragment.java:369)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
02-15 00:42:35.257: E/AndroidRuntime(2693):     ... 21 more
02-15 00:42:35.257: E/AndroidRuntime(2693): Caused by: java.lang.ClassNotFoundException:     Didn't find class "com.google.android.gms.maps.SupportMapFragment" on path:     /system/framework/com.google.android.maps.jar:/data/app/com.bachelor.bond-1.apk
02-15 00:42:35.257: E/AndroidRuntime(2693):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.support.v4.app.Fragment.instantiate(Fragment.java:391)
02-15 00:42:35.257: E/AndroidRuntime(2693):     ... 24 more

One other problem I face, is that when i try to
import com.google.android.gms.maps.MapFragment; it gives an error that it doesnt recognise a package name to be com.google.android.gms so i cant even use the GoogleMapor MapFragment for example.

So does anyone have any solution to those 2 problems?

Answer 1

I found you missed several things in your code.

Answer 1: Your GPSonMAP.java must be modified like below;

public class GPSonMap extends android.support.v4.app.FragmentActivity{
 GoogleMap googlemap;  // "MapView map;" is wrong
 //MapController controller;  ==> it was depreciated.
 LocationManager locationManager;
 LocationListener listener;
 PendingIntent pendingIntent ;
 Criteria criteria;
 //MapOverlay overlay; ==> it was depreciated.
 SupportMapFragment fm; // add this


@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.map);
        Log.d("", "entered");


    //map = (MapView)findViewById(R.id.mapView); ==> delete it.

     fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.mapView);
     googleMap = fm.getMap();
    }


}

After modifying the above, press "Ctrl + Shft + (alphabet) O " and some required classes will be imported.

Answer 2: Your xml file in layout must be modified like below;

<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"
tools:context=".GPSonMap" >

Your MainActivity is not MapsActivity, but GPSonMap.

Answer 3: Your Manifest file does not match your package name with the described package name in the manifest file. Please match the package name with the same one.

Modify "com.example.example" to your package name.

After copying and pasting some codes, you MUST check the package name and class name at least.

Answer 2

Presumably, you have not added a reference to the Google Play Services library project to your app project. See the Google Play Services SDK documentation, specifically the section entitled "To set up a project to use the Google Play services SDK".