以前的人也有同样的错误信息，但解决方法一直是删除或修改一些导入“android.R”。我没有这样的进口所以我真的迷路了
我正在尝试运行一个示例 android google maps 程序。
我正在关注本教程。http://www.vogella.com/articles/AndroidGoogleMaps/article.html
但是，当我粘贴代码时，eclipse 给了我这个错误：“activity_main 无法解析或不是字段”
这发生在这段代码中的 MainActivity
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;}
具体错误在“R.menu.activity_main”部分。
这是我的 activity_main.xml 文件。
<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=".MainActivity" >
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
</RelativeLayout>
这是我完整的 MainActivity.java 类
package com.example.mapssample;
import android.app.Activity;
import android.os.Bundle;
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.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;
public class MainActivity extends Activity {
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_main);
map = ((MapFragment) getFragmentManager().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) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
预先感谢您的所有帮助。对不起，我的代码中有一些奇怪的缩进，我一直给它四个额外的空格让它显示为代码，它有点奇怪。
新的，错误日志。
非常感谢，你知道这是什么意思吗？
06-07 22:45:25.226: E/AndroidRuntime(29901): FATAL EXCEPTION: main
06-07 22:45:25.226: E/AndroidRuntime(29901): java.lang.NoClassDefFoundError: com.google.android.gms.R$styleable
06-07 22:45:25.226: E/AndroidRuntime(29901): at com.google.android.gms.maps.GoogleMapOptions.createFromAttributes(Unknown Source)
06-07 22:45:25.226: E/AndroidRuntime(29901): at com.google.android.gms.maps.MapFragment.onInflate(Unknown Source)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.app.Activity.onCreateView(Activity.java:4713)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
06-07 22:45:25.226: E/AndroidRuntime(29901): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:260)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.app.Activity.setContentView(Activity.java:1893)
06-07 22:45:25.226: E/AndroidRuntime(29901): at com.example.mapssample.MainActivity.onCreate(MainActivity.java:23)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.app.Activity.performCreate(Activity.java:5058)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2174)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.app.ActivityThread.access$700(ActivityThread.java:141)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1267)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.os.Handler.dispatchMessage(Handler.java:99)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.os.Looper.loop(Looper.java:137)
06-07 22:45:25.226: E/AndroidRuntime(29901): at android.app.ActivityThread.main(ActivityThread.java:5059)
06-07 22:45:25.226: E/AndroidRuntime(29901): at java.lang.reflect.Method.invokeNative(Native Method)
06-07 22:45:25.226: E/AndroidRuntime(29901): at java.lang.reflect.Method.invoke(Method.java:511)
06-07 22:45:25.226: E/AndroidRuntime(29901): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
06-07 22:45:25.226: E/AndroidRuntime(29901): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
06-07 22:45:25.226: E/AndroidRuntime(29901): at dalvik.system.NativeStart.main(Native Method)