java.lang.noclassdeffounderror:com.google.android.gms.R $ styleable没什么帮助我的

我有这样的活动类代码:

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:

    

这样的表现:

                             

但当我运行我的活动时,我得到:

 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) 

我尝试清理项目,我添加了lib和项目,我尝试google并做一些建议….但没有什么帮助我(

我做错了什么?

注意:我必须在android 2.3.3上运行它…

如何解决这个错误?

如果我不得不猜测,当你“添加了lib和项目”时,你添加了JAR,而不是Android库项目。 Play Services SDK是一个恰好包含JAR的Android库项目。

Play Services SDK文档包含基本步骤。 假设您使用的是Eclipse,则需要将Play Services SDK Android库项目导入工作区,然后从您的应用程序(项目>属性> Android)引用该库项目。 此外,撤消您最初尝试使用Play Services SDK所做的任何操作,因为这可能会干扰修改后的设置。