Android Google Map classeNotFound exception

Question

Fondamentalement, je suis en train de faire une application qui affiche une carte Google.Voici mon code.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/LinearLayout1" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" 
    > 
    <com.google.android.maps.MapView 
    android:id="@+id/mapView" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:enabled="true" 
    android:clickable="true" 
    android:apiKey="my key goes here" 
    /> 
</LinearLayout> 

classe MainActivity ...

import com.google.android.maps.MapActivity; 

import android.os.Bundle; 
import android.app.Activity; 
import android.view.Menu; 

public class MainActivity extends MapActivity { 

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

@Override 
protected boolean isRouteDisplayed() { 
    // TODO Auto-generated method stub 
    return false; 
    } 


} 

Quand je lance, je reçois le message suivant

06-22 15:54:03.622: E/AndroidRuntime(26187): FATAL EXCEPTION: main 
06-22 15:54:03.622: E/AndroidRuntime(26187): java.lang.RuntimeException: 
Unable to instantiate activity 
ComponentInfo{com.example.maptutorial/com.example.maptutorial.MainActivity}: 
java.lang.ClassNotFoundException: com.example.maptutorial.MainActivity 

Peut-être que je pourrais faire quelque chose de mal dans mon dossier Manifest, et peut pas le voir ..

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

<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="18" /> 

<uses-permission android:name="android.permission.INTERNET"/> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name="com.example.maptutorial.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> 
    </application> 

</manifest> 

Answer 1

Je pense que vous utilisez MAP API version 1 qui est obsolète. Pourquoi Cant-vous utiliser l'API 2 fragmenter ou support fragment (https://developers.google.com/maps/documentation/android/start)

<fragment xmlns:android="http://schemas.android.com/apk/res/android" 
     android:id="@+id/map" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:name="com.google.android.gms.maps.MapFragment"/> 

fichier Manifest

<uses-feature 
    android:glEsVersion="0x00020000" 
    android:required="true" /> 
<meta-data 
     android:name="com.google.android.maps.v2.API_KEY" 
     android:value="AIzaSyC8qEhdHVd3ZtxCR0549UqwnM72h0jgoMY" /> 

Answer 2

vous avez oublié d'ajouter des utilisations bibliothèque dans votre fichier manifeste, dans ce cas

<application> 
    ... 
    <uses-library android:name="com.google.android.maps" 
    android:required="true" /> 
    ... 
</application> 

Answer 3

Fondamentalement, je devais utiliser l'utilisation du SupportMapFragment comme celui-ci pour le faire fonctionner pour Android 2.3 .Aussi a dû créer une nouvelle clé API ..

<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=".MainActivity" > 

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

</RelativeLayout> 

Voici un exemple de code java.

public class EmergencyMap extends FragmentActivity { 
static final LatLng ASTYNOMIA = new LatLng(39.620530, 22.401728); 
static final LatLng PYROSVESTIKH = new LatLng(39.632652, 22.398704);        
static final LatLng genikonosokomeio = new LatLng(39.642081, 22.422350); 
static final LatLng panosokomeio = new LatLng(39.609993, 22.385722); 

private GoogleMap map; 
final int RQS_GooglePlayServices = 1; 

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

    map = ((SupportMapFragment)getSupportFragmentManager() 
      .findFragmentById(R.id.map)).getMap(); 

    map.addMarker(new MarkerOptions().position(ASTYNOMIA).title("ΑΣΤΥΝΟΜΙΑ")); 
    map.moveCamera(CameraUpdateFactory.newLatLngZoom(ASTYNOMIA,15)); 
    map.animateCamera(CameraUpdateFactory.zoomTo(20),2000,null); 


    map.addMarker(new MarkerOptions().position(PYROSVESTIKH).title("ΠΥΡΟΣΒΕΣΤΙΚΗ")); 
    map.moveCamera(CameraUpdateFactory.newLatLngZoom(PYROSVESTIKH,15)); 
    map.animateCamera(CameraUpdateFactory.zoomTo(20),2000,null); 

    map.addMarker(new MarkerOptions().position(genikonosokomeio).title("ΓΕΝΙΚΟ 
    ΝΟΣΟΚΟΜΕΙΟ")); 
    map.moveCamera(CameraUpdateFactory.newLatLngZoom(genikonosokomeio,15)); 
    map.animateCamera(CameraUpdateFactory.zoomTo(20),2000,null); 

    map.addMarker(new MarkerOptions().position(panosokomeio).title("ΠΑΝΕΠΙΣΤΗΜΙΑΚΟ 

    ΝΟΣΟΚΟΜΕΙΟ")); 
    map.moveCamera(CameraUpdateFactory.newLatLngZoom(panosokomeio,15)); 
    map.animateCamera(CameraUpdateFactory.zoomTo(20),2000,null); 

    map.setMapType(GoogleMap.MAP_TYPE_HYBRID); 
} 

protected void onResume() { 
    super.onResume(); 

    int resultCode = 
    GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext()); 
    if (resultCode == ConnectionResult.SUCCESS){ 
     Toast.makeText(getApplicationContext(), 
       "Το κινητό σας υποστηρίζει GooglePlayServices", 
       Toast.LENGTH_LONG).show();   
    }else{ 
    GooglePlayServicesUtil.getErrorDialog(resultCode, this,RQS_GooglePlayServices); 
    } 
} 

} 

Answer 4

Il est API Google Map 2. Voici une partie de mon dossier manifeste.

<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="19" /> 
    <permission 
    android:name="com.example.larissaguide.permission.MAPS_RECEIVE" 
    android:protectionLevel="signature" /> 

<uses-permission android:name="larissa.app.permission.MAPS_RECEIVE" /> 
<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
<!-- 
The following two permissions are not required to use 
Google Maps Android API v2, but are recommended. 
--> 
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 

<uses-feature 
    android:glEsVersion="0x00020000" 
    android:required="true" /> 
<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name="larissa.app.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> 
    <meta-data 
     android:name="com.google.android.maps.v2.API_KEY" 
     android:value="MY_KEY_GOES_HERE" /> 
    <meta-data 
     android:name="com.google.android.gms.version" 
     android:value="@integer/google_play_services_version" />