我有这样的activityclass code：

I have such activityclass code:

package com.pavel.exchanger;

import android.os.Bundle;
import android.app.Activity;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import android.support.v4.app.Fragment;


public class SearchExchangerActivity extends FragmentActivity   {
    static final LatLng HAMBURG = new LatLng(53.558, 9.927);
    static final LatLng KIEL = new LatLng(53.551, 9.993);
    private GoogleMap map;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_search_exchanger);

        map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
                .getMap();
            Marker hamburg = map.addMarker(new MarkerOptions().position(HAMBURG)
                .title("Hamburg"));
            Marker kiel = map.addMarker(new MarkerOptions()
                .position(KIEL)
                .title("Kiel")
                .snippet("Kiel is cool")
                .icon(BitmapDescriptorFactory
                    .fromResource(R.drawable.ic_launcher)));

            // Move the camera instantly to hamburg with a zoom of 15.
            map.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15));

            // Zoom in, animating the camera.
            map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
    }

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

}

和这样的布局：

<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=".SearchExchangerActivity" >

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

</RelativeLayout> 

和这样的清单：

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

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="10" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="com.pavel.exchanger.permission.MAPS_RECEIVE" />
    <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" />

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

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.pavel.exchanger.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>
        <activity
            android:name="com.pavel.exchanger.ExchangerListActivity"
            android:label="@string/title_activity_exchanger_list" >
        </activity>
        <activity
            android:name="com.pavel.exchanger.BankExchangersListActivity"
            android:label="@string/title_activity_bank_exchangers_list" >
        </activity>
        <activity
            android:name="com.pavel.exchanger.NbrbActivity"
            android:label="@string/title_activity_nbrb" >
        </activity>

        <meta-data
            android:name="com.google.android.maps.v2.***"
            android:value="****" />

        <activity
            android:name="com.pavel.exchanger.SearchExchangerActivity"
            android:label="@string/title_activity_search_exchanger" >
        </activity>
    </application>

</manifest>

但是当我跑我的活动我得到：

but when i run my activity i get:

04-30 17:25:35.926: E/AndroidRuntime(400): FATAL EXCEPTION: main
04-30 17:25:35.926: E/AndroidRuntime(400): java.lang.NoClassDefFoundError: com.google.android.gms.R$styleable
04-30 17:25:35.926: E/AndroidRuntime(400):  at com.google.android.gms.maps.GoogleMapOptions.createFromAttributes(Unknown Source)
04-30 17:25:35.926: E/AndroidRuntime(400):  at com.google.android.gms.maps.SupportMapFragment.onInflate(Unknown Source)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:279)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
04-30 17:25:35.926: E/AndroidRuntime(400):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.app.Activity.setContentView(Activity.java:1657)
04-30 17:25:35.926: E/AndroidRuntime(400):  at com.pavel.exchanger.SearchExchangerActivity.onCreate(SearchExchangerActivity.java:26)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.os.Handler.dispatchMessage(Handler.java:99)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.os.Looper.loop(Looper.java:123)
04-30 17:25:35.926: E/AndroidRuntime(400):  at android.app.ActivityThread.main(ActivityThread.java:3683)
04-30 17:25:35.926: E/AndroidRuntime(400):  at java.lang.reflect.Method.invokeNative(Native Method)
04-30 17:25:35.926: E/AndroidRuntime(400):  at java.lang.reflect.Method.invoke(Method.java:507)
04-30 17:25:35.926: E/AndroidRuntime(400):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-30 17:25:35.926: E/AndroidRuntime(400):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-30 17:25:35.926: E/AndroidRuntime(400):  at dalvik.system.NativeStart.main(Native Method)

我试图清理项目，我加入lib和项目，我尝试谷歌和做一些建议....但没有帮我（

i try to clean project, i added lib and project, i try to google and do some advices.... but nothing helped me(

我在做什么错了？

注：我必须在Android 2.3.3运行...

Note: i must run it on android 2.3.3...

如何解决这个问题？

推荐答案

如果我猜的话，当你补充说：lib和项目，添加的JAR，而不是Android的库项目。播放服务SDK是一个Android库项目，恰好包含一个JAR。

If I had to guess, when you "added lib and project", you added the JAR, not the Android library project. The Play Services SDK is an Android library project that happens to contain a JAR.

借助播放服务SDK文档具有的基本步骤。假设你使用的是Eclipse，你需要播放服务SDK的Andr​​oid库项目导入到工作区，然后引用该库项目，从您的应用程序（项目>属性> Android的）。此外，撤消不管你是最初尝试使用播放服务SDK，因为这可能会与修改后的设置干扰。

The Play Services SDK documentation has the basic steps. Assuming that you are using Eclipse, you need to import the Play Services SDK Android library project into your workspace, then reference that library project from your app (Project > Properties > Android). Also, undo whatever you did originally to attempt to use the Play Services SDK, as that may interfere with the revised setup.