Google Maps API Android - 錯誤擴展類片段

Question

我知道StackOverFlow中有很多關於這個問題的主題，但是他們沒有一個可以幫助我。 我正在做一個非常基本的應用程序，我只想顯示一個MAP。

• 我已將google-play-services_lib導入到我的主項目中。
• 我已經生成了我的API密鑰。

這是我的AndroidManifest.xml文件：

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.linkme2night" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="11" 
     android:targetSdkVersion="17" /> 

    <permission 
     android:name="com.linkme2night.permission.MAPS_RECEIVE" 
     android:protectionLevel="signature" /> 

    <uses-permission android:name="com.linkme2night.permission.MAPS_RECEIVE" /> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
    <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.WRITE_EXTERNAL_STORAGE" /> 
    <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="com.linkme2night.view.interactwithvenue.InteractWithVenueActivity" 
      android:label="@string/app_name" > 
     </activity> 
     <activity 
      android:name="com.linkme2night.view.openvenuesmap.OpenVenuesMapActivity" 
      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="AIzaSyBJVHZJr1Q14fcvEHBkAUT1A_ZH4eQlnrI" /> 
    </application> 

</manifest> 

這是我的佈局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:name="com.google.android.gms.maps.SupportMapFragment " 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" /> 

這是我的代碼：

public class OpenVenuesMapActivity extends FragmentActivity { 

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

我運行在我的索尼XPeria J上的應用程序。我得到Loc Cat生成的以下錯誤：

05-01 18:51:48.544: E/AndroidRuntime(10794): FATAL EXCEPTION: main 
05-01 18:51:48.544: E/AndroidRuntime(10794): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.linkme2night/com.linkme2night.view.openvenuesmap.OpenVenuesMapActivity}: android.view.InflateException: Binary XML file line #1: Error inflating class fragment 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2065) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2090) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.app.ActivityThread.access$600(ActivityThread.java:136) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1201) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.os.Handler.dispatchMessage(Handler.java:99) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.os.Looper.loop(Looper.java:137) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.app.ActivityThread.main(ActivityThread.java:4802) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at java.lang.reflect.Method.invokeNative(Native Method) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at java.lang.reflect.Method.invoke(Method.java:511) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:813) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:580) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at dalvik.system.NativeStart.main(Native Method) 
05-01 18:51:48.544: E/AndroidRuntime(10794): Caused by: android.view.InflateException: Binary XML file line #1: Error inflating class fragment 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.view.LayoutInflater.inflate(LayoutInflater.java:466) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:256) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.app.Activity.setContentView(Activity.java:1869) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at com.linkme2night.view.openvenuesmap.OpenVenuesMapActivity.onCreate(OpenVenuesMapActivity.java:14) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.app.Activity.performCreate(Activity.java:5013) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2029) 
05-01 18:51:48.544: E/AndroidRuntime(10794): ... 11 more 
05-01 18:51:48.544: E/AndroidRuntime(10794): Caused by: android.support.v4.app.Fragment$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 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.support.v4.app.Fragment.instantiate(Fragment.java:401) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.support.v4.app.Fragment.instantiate(Fragment.java:369) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676) 
05-01 18:51:48.544: E/AndroidRuntime(10794): ... 20 more 
05-01 18:51:48.544: E/AndroidRuntime(10794): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.SupportMapFragment 
05-01 18:51:48.544: E/AndroidRuntime(10794): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
05-01 18:51:48.544: E/AndroidRuntime(10794): at android.support.v4.app.Fragment.instantiate(Fragment.java:391) 
05-01 18:51:48.544: E/AndroidRuntime(10794): ... 23 more 

這是我所得到的，當我從現有代碼的谷歌服務-lib中，位於我的C：/ Program Files文件/月食/軟件開發工具包/ ...，然後導入它在我的項目：

有誰人知道還有什麼可以我會丟失？我開始絕望這個簡單的事情...

Answer 1

你分鐘SDK是11.您將需要添加支持庫的API版本低於12個

<uses-sdk 
    android:minSdkVersion="11" 
    android:targetSdkVersion="17" /> 

片段在蜂窩進行了介紹。因此，對於落後compatibality你需要添加支持庫

android:name="com.google.android.gms.maps.SupportMapFragment " 

既然你din't添加支持庫，你有ClassCastException異常

要添加支持庫檢查以下

http://developer.android.com/tools/extras/support-library.html

Answer 2

我已經將google-play-services_lib導入到我的主項目。

不根據您的堆棧跟蹤。您的堆棧跟蹤表明您手動修改了構建路徑以包含來自Play Services SDK的JAR，而不是將Play Services SDK作爲Android庫項目附加。