java - Android 2.3 和谷歌地图 API v2

Question

今天我尝试使用 google maps api v2 for Android 2.3.3 我的步骤:

• 从 debug.keystore 获取 SHA1 代码
• 在 google apis 控制台中创建一个新项目
• 注册一个新的id
• 启用谷歌地图 android api v2
• 使用 SHA1 作为输入创建一个 android key ；it.mappe(it.mappe 是我的 包)
• 获取 API key

• 更新 AndroidManifest 文件:

  <permission android:name="it.mappe.permission.MAPS_RECEIVE" android:protectionLevel="signature" />
  
  <uses-permission android:name="it.mappe.permission.MAPS_RECEIVE" />
  <uses-sdk android:minSdkVersion="10" android:targetSdkVersion="16" />
  
  <uses-permission android:name="android.permission.INTERNET" />
  <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" >
      <meta-data
          android:name="com.google.android.maps.v2.API_KEY"
          android:value="MY_KEY" />
  
          <activity
              android:name="it.mappe.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>
  

• 我的主要 Activity

  public class MainActivity extends Activity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
  }   
  

• 我的主要 Activity :

  <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"/>
  

• 将目录 ANDROID_SDK_DIR/extras/google/google_play_services/libproject/google-play-services_lib 复制到项目的根目录

• 添加 /extras/android/compatibility/v4/android-support-v4.jar 作为 外部 jar

• 将下一行添加到 YOUR_PROJECT/project.properties android.library.reference.1=google-play-services_lib

当我在我的三星 galaxy S 上运行它时(带有 google play services apk)，它崩溃并且 logcat 显示这个错误

E/AndroidRuntime(6435): FATAL EXCEPTION: main java.lang.RuntimeException: Unable to start activity ComponentInfo{it.mappe/it.mappe.MainActivity}: 

android.view.InflateException: Binary XML file line #2: Error inflating class fragment
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
    at android.app.ActivityThread.access$1500(ActivityThread.java:117)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:123)
    at android.app.ActivityThread.main(ActivityThread.java:3687)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:507)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
    at dalvik.system.NativeStart.main(Native Method)
 Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:386)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:209)
    at android.app.Activity.setContentView(Activity.java:1657)
    at it.mappe.MainActivity.onCreate(MainActivity.java:12)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
    ... 11 more
 Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader dalvik.system.PathClassLoader[/data/app/it.mappe-2.apk]
    at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
    at android.view.LayoutInflater.createView(LayoutInflater.java:471)
    at android.view.LayoutInflater.onCreateView(LayoutInflater.java:549)
    at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
    ... 19 more

一些建议？

编辑

这里是我的 main.xml:

<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"/>

Answer 1

<fragment>应该全部小写。

此外，您正在使用 Activity (不是 FragmentActivity )与 SupportMapFragment ，我怀疑这种组合是否有效。