Google Map API v2 java.lang.ClassNotFoundException：com.google.android.gms.maps.MapFragment

Question

我在集成Google Map API V2時遇到了java.lang.ClassNotFoundException: com.google.android.gms.maps.MapFragment錯誤。

我已經嘗試了幾乎所有可能的解決方案目前在stackoverflow。

10-01 15:02:48.181: E/AndroidRuntime(14917): FATAL EXCEPTION: main 
10-01 15:02:48.181: E/AndroidRuntime(14917): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mapdummy/com.mapdummy.MainActivity}: android.view.InflateException: Binary XML file line #1: Error inflating class fragment 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.ActivityThread.access$600(ActivityThread.java:123) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.os.Handler.dispatchMessage(Handler.java:99) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.os.Looper.loop(Looper.java:137) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.ActivityThread.main(ActivityThread.java:4424) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at java.lang.reflect.Method.invokeNative(Native Method) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at java.lang.reflect.Method.invoke(Method.java:511) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:817) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at dalvik.system.NativeStart.main(Native Method) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): Caused by: android.view.InflateException: Binary XML file line #1: Error inflating class fragment 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:697) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.view.LayoutInflater.inflate(LayoutInflater.java:466) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:268) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.Activity.setContentView(Activity.java:1837) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at com.mapdummy.MainActivity.onCreate(MainActivity.java:13) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.Activity.performCreate(Activity.java:4470) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): ... 11 more 
    10-01 15:02:48.181: E/AndroidRuntime(14917): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.MapFragment: make sure class name exists, is public, and has an empty constructor that is public 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.Fragment.instantiate(Fragment.java:581) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.Fragment.instantiate(Fragment.java:549) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.Activity.onCreateView(Activity.java:4240) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:673) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): ... 20 more 
    10-01 15:02:48.181: E/AndroidRuntime(14917): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.MapFragment 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): at android.app.Fragment.instantiate(Fragment.java:571) 
    10-01 15:02:48.181: E/AndroidRuntime(14917): ... 23 more 

清單文件：

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

     <uses-sdk 
      android:minSdkVersion="12" 
      android:targetSdkVersion="15" /> 
    <permission 
     android:name="com.mapdummy.permission.MAPS_RECEIVE" 
     android:protectionLevel="signature" /> 
    <uses-permission android:name="com.mapdummy.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" /> 
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /> 
    <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=".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.gms.version" 
    android:value="@integer/google_play_services_version" /> 
      <meta-data 
     android:name="com.google.android.maps.v2.API_KEY" 
     android:value="AIzaSyAY5MKF9nca8Y4LQUv6Zj3N1wuKr8ikJUs" /> 
      <uses-library 
      android:name="com.google.android.maps" 
      android:required="false" /> 
     </application> 

    </manifest> 

XML文件：

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

Java代碼：

package com.mapdummy; 

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

public class MainActivity extends Activity { 

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

Answer 1

嘗試通過這種替換XML地圖片段，

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" > 
    <fragment 
     android:id="@+id/map" 
     android:name="com.google.android.gms.maps.SupportMapFragment" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     class="com.google.android.gms.maps.SupportMapFragment" /> 

</LinearLayout> 

問題是在XML文件中的片段定義的類名。

Answer 2

你的問題是你加入谷歌播放服務，以項目的方式：

我抄了谷歌，播放services.jar在libs文件夾，並在Eclipse的構建路徑設置。

這是錯誤的！閱讀第3步這篇博客我寫來獲取如何正確地做到這一點的想法：

谷歌地圖API V2

總之，你應該導入谷歌播放服務作爲一個項目你工作區。然後從您的項目中引用它。

Answer 3

最後解決我的問題。問題發生是因爲Eclipse無法找到google-play-services_lib（即使它在添加爲庫時顯示爲綠色標記）。我在另一臺機器上嘗試過相同的過程，一切正常。

所以我改變了我的整個Android SDK的位置，它很好。