ClassNotFoundException при использовании Google Map V2 в Android

Question

Вход Cat

03-11 09:43:55.428: E/dalvikvm(1518): Could not find class 'com.google.android.gms.maps.MapFragment', referenced from method com.example.mapdemo2.MapDemo2.onCreate 
03-11 09:43:55.428: W/dalvikvm(1518): VFY: unable to resolve check-cast 696 (Lcom/google/android/gms/maps/MapFragment;) in Lcom/example/mapdemo2/MapDemo2; 
03-11 09:43:55.498: D/dalvikvm(1518): VFY: replacing opcode 0x1f at 0x0013 
03-11 09:43:55.908: D/AndroidRuntime(1518): Shutting down VM 
03-11 09:43:55.908: W/dalvikvm(1518): threadid=1: thread exiting with uncaught exception (group=0x41465700) 
03-11 09:43:55.958: E/AndroidRuntime(1518): FATAL EXCEPTION: main 
03-11 09:43:55.958: E/AndroidRuntime(1518): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.mapdemo2/com.example.mapdemo2.MapDemo2}: android.view.InflateException: Binary XML file line #12: Error inflating class fragment 
03-11 09:43:55.958: E/AndroidRuntime(1518):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211) 
03-11 09:43:55.958: E/AndroidRuntime(1518):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261) 
03-11 09:43:55.958: E/AndroidRuntime(1518):  at android.app.ActivityThread.access$600(ActivityThread.java:141) 
03-11 09:43:55.958: E/AndroidRuntime(1518):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256) 
03-11 09:43:55.958: E/AndroidRuntime(1518):  at android.os.Handler.dispatchMessage(Handler.java:99) 
03-11 09:43:55.958: E/AndroidRuntime(1518):  at android.os.Looper.loop(Looper.java:137) 
03-11 09:43:55.958: E/AndroidRuntime(1518):  at android.app.ActivityThread.main(ActivityThread.java:5103) 
03-11 09:43:55.958: E/AndroidRuntime(1518):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-11 09:43:55.958: E/AndroidRuntime(1518):  at java.lang.reflect.Method.invoke(Method.java:525) 
03-11 09:43:55.958: E/AndroidRuntime(1518):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 

Manifest

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.mapdemo2" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="11" 
     android:targetSdkVersion="18" /> 

    <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" /> 
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /> 

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

     <activity 
      android:name="com.example.mapdemo2.MapDemo2" 
      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="AIzaSyAfdExXel00usxddAR-WtSJ0FMcXzSMERA" /> 
     <meta-data 
      android:name="com.google.android.gms.version" 
      android:value="@integer/google_play_services_version" > 
     </meta-data> 
    </application> 

</manifest> 

Activity XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    xmlns:map="http://schemas.android.com/apk/res-auto" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context=".MapDemo2" > 

    <fragment 

     android:id="@+id/fragment1" 
     class="com.google.android.gms.maps.SupportMapFragment" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentTop="true" 
     android:layout_centerHorizontal="true" /> 

</RelativeLayout> 

Java Code

package com.example.mapdemo2; 
import com.google.android.gms.maps.GoogleMap; 
import com.google.android.gms.maps.MapFragment; 
import com.google.android.gms.maps.SupportMapFragment; 
import android.os.Bundle; 
import android.app.Activity; 
import android.support.v4.app.FragmentActivity; 
import android.view.Menu; 

public class MapDemo2 extends FragmentActivity { 

    GoogleMap maps; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_map_demo2); 
     SupportMapFragment mapFrag = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.fragment1)); 
     maps = mapFrag.getMap(); 
     maps.setMapType(GoogleMap.MAP_TYPE_NORMAL); 
    } 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.map_demo2, menu); 
     return true; 
    } 

} 

Answer 1

Google представила Google Play Services, которая имеет GoogleApiClient(), чтобы получить доступ карты и много других особенностей поддержки недавно , Я бы рекомендовал вам добавить ссылку на проект библиотеки Google Play Services в проект приложения. Пожалуйста, ознакомьтесь с нижеприведенным documentation, чтобы узнать, как использовать Google Play Services с помощью GoogleapiClient для доступа к картам.

Пожалуйста, обратитесь к официальному лицу documentation для реализации кода.

Обратитесь к этому tutorial, если вы хотите получить доступ к Картам Google через Службы Google Play.

Надеюсь, что поможет!

Answer 2

XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
xmlns:map="http://schemas.android.com/apk/res-auto" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:paddingBottom="@dimen/activity_vertical_margin" 
android:paddingLeft="@dimen/activity_horizontal_margin" 
android:paddingRight="@dimen/activity_horizontal_margin" 
android:paddingTop="@dimen/activity_vertical_margin" 
tools:context=".MapDemo2" > 

<fragment 

    android:id="@+id/fragment1" 
    class="com.google.android.gms.maps.MapFragment" <--- use MapFragment 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentBottom="true" 
    android:layout_alignParentTop="true" 
    android:layout_centerHorizontal="true" /> 

</RelativeLayout> 

Java Code

MapFragment mapFrag = ((MapFragment) getFragmentManager().findFragmentById(R.id.fragment1)); 
    maps = mapFrag.getMap();