Google Maps API v2 non funziona

Question

Sto provando a creare un'applicazione utilizzando l'API di Google Maps API v2, ma il fatto è che l'applicazione continua a farmi chiudere la forza anche se ho seguito tutte le istruzioni richieste.

Ecco la parte di Android

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); 
    } 

e qui è l'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> 

e questo è il mio manifesto

 <?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> 

E l'uscita Log Cat

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 

Un altro problema io faccia, è che quando provo a
import com.google.android.gms.maps.MapFragment; dà un errore che si pretende molto riconosce un nome di un pacchetto di essere com.google.android.gms così non posso nemmeno usare il GoogleMap o MapFragment per esempio.

Quindi qualcuno ha qualche soluzione a questi 2 problemi?

Answer 1

Presumibilmente, non è stato aggiunto un riferimento al progetto di libreria dei servizi di Google Play nel progetto dell'app. Vedi the Google Play Services SDK documentation, in particolare la sezione intitolata "Per impostare un progetto per utilizzare l'SDK dei servizi di Google Play".

Answer 2

Ho trovato che mancavano diverse cose nel codice.

Risposta 1: Il tuo GPSonMAP.java deve essere modificato come di seguito;

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(); 
    } 


} 

Dopo aver modificato quanto sopra, premere "Ctrl + Maiusc + (alfabetico) O" e alcune classi richieste verranno importate.

Risposta 2: Il file xml nel layout deve essere modificato come di seguito;

<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" > 

Il MainActivity non è MapsActivity, ma GPSonMap.

Risposta 3: il file manifest non corrisponde al nome del pacchetto con il nome del pacchetto descritto nel file manifest. Si prega di abbinare il nome del pacchetto con lo stesso.

Modificare "com.example.example" con il nome del pacchetto.

Dopo aver copiato e incollato alcuni codici, è necessario controllare almeno il nome del pacchetto e il nome della classe.

Answer 3

COME VISUALIZZARE GOOGLE MAP tramite Google Maps API v2 su Android.

NOTA che Tutte due casi sono necessarie per impostare il servizio e il file manifesto tra cui diverse autorizzazioni e chiave API di Google Play.

1. Visualizzare Google Map in (Support) Fragment.

main.xml

<?xml version="1.0" encoding="utf-8"?> 

<!-- This can go anywhere in your layout (see other demos for some examples). --> 
<fragment xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/map" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    class="com.google.android.gms.maps.SupportMapFragment"/> 

MainActivity.java

/** 
* This shows how to create a simple activity with a map and a marker on the map. 
* <p> 
* Notice how we deal with the possibility that the Google Play services APK is not 
* installed/enabled/updated on a user's device. 
*/ 
public class BasicMapActivity extends android.support.v4.app.FragmentActivity { 
    /** 
    * Note that this may be null if the Google Play services APK is not available. 
    */ 
    private GoogleMap mMap; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     setUpMapIfNeeded(); 
    } 

    @Override 
    protected void onResume() { 
     super.onResume(); 
     setUpMapIfNeeded(); 
    } 

    /** 
    * Sets up the map if it is possible to do so (i.e., the Google Play services APK is correctly 
    * installed) and the map has not already been instantiated.. This will ensure that we only ever 
    * call {@link #setUpMap()} once when {@link #mMap} is not null. 
    * <p> 
    * If it isn't installed {@link SupportMapFragment} (and 
    * {@link com.google.android.gms.maps.MapView 
    * MapView}) will show a prompt for the user to install/update the Google Play services APK on 
    * their device. 
    * <p> 
    * A user can return to this Activity after following the prompt and correctly 
    * installing/updating/enabling the Google Play services. Since the Activity may not have been 
    * completely destroyed during this process (it is likely that it would only be stopped or 
    * paused), {@link #onCreate(Bundle)} may not be called again so we should call this method in 
    * {@link #onResume()} to guarantee that it will be called. 
    */ 
    private void setUpMapIfNeeded() { 
     // 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) getSupportFragmentManager().findFragmentById(R.id.map)) 
        .getMap(); 
      // Check if we were successful in obtaining the map. 
      if (mMap != null) { 
       setUpMap(); 
      } 
     } 
    } 

    /** 
    * This is where we can add markers or lines, add listeners or move the camera. In this case, we 
    * just add a marker near Africa. 
    * <p> 
    * This should only be called once and when we are sure that {@link #mMap} is not null. 
    */ 
    private void setUpMap() { 
     mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker")); 
    } 
} 

2. display MapView in (supporto) Frammento.

main.xml

<?xml version="1.0" encoding="utf-8"?> 

<!-- This can go anywhere in your layout. --> 
<com.google.android.gms.maps.MapView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/map" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"/> 

MainActivity.java

/** 
* This shows how to create a simple activity with a raw MapView and add a marker to it. This 
* requires forwarding all the important lifecycle methods onto MapView. 
*/ 
public class RawMapViewDemoActivity extends android.support.v4.app.FragmentActivity { 
    private MapView mMapView; 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     mMapView = (MapView) findViewById(R.id.map); 
     mMapView.onCreate(savedInstanceState); 


    } 

    @Override 
    protected void onResume() { 
     super.onResume(); 
     mMapView.onResume(); 


    } 



    @Override 
    protected void onPause() { 
     mMapView.onPause(); 
     super.onPause(); 
    } 

    @Override 
    protected void onDestroy() { 
     mMapView.onDestroy(); 
     super.onDestroy(); 
    } 

    @Override 
    public void onLowMemory() { 
     super.onLowMemory(); 
     mMapView.onLowMemory(); 
    } 


} 

Answer 4

Ho avuto questo problema ed è stato di perdere tempo (oltre 1,5 giorni di strapparsi i capelli frustrazione). Poi ho guardato un video di YouTube che stava facendo una noiosa passeggiata attraverso le istruzioni per aggiungere i servizi di Google Play a un'app. Bene, in quel video dopo aver aggiunto l'SDK dal gestore sdk hanno usato Eclipse "Controlla aggiornamenti". Quel piccolo pezzo di magia è uscito e ha scaricato un file jar che l'SDK Manager non fa! Hanno davvero bisogno di aggiungere questo alle istruzioni e salvare la gente dalla frustrazione. Sono stato tentato di rimuovere Google Maps dalla mia app. Ho usato la 1.0 e avevo bisogno di aggiornare a 2.0 o mappe di fossa.