我正在尝试将 OSMdroid 用于项目，但我完全无法使最简单的代码工作。好吧，几天前我能够显示地图等，现在我什至无法实例化 MapView。我将代码简化为最简单的形式。我与日食一起工作。我下载了 osmdroid-android-3.0.5.jar 和 slf4j-android-1.5.8.jar，并通过在类路径文件中添加行将它们包含在项目中
<classpathentry kind="lib" path="lib/osmdroid-android-3.0.5.jar"/>
<classpathentry kind="lib" path="lib/slf4j-android-1.5.8.jar"/>
或者通过右键单击它们然后构建路径->添加到构建路径（无论如何都给出了相同的结果）
然后我输入了这段代码：
import android.app.Activity;
import org.osmdroid.tileprovider.tilesource.TileSourceFactory;
import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.MapController;
import org.osmdroid.views.MapView;
import android.os.Bundle;
public class TestMapActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MapView mv=new MapView(this,256);
}
}
在模拟器上运行它时出现错误：
04-17 09:10:31.181: E/AndroidRuntime(595): FATAL EXCEPTION: main
04-17 09:10:31.181: E/AndroidRuntime(595): java.lang.NoClassDefFoundError: org.osmdroid.views.MapView
04-17 09:10:31.181: E/AndroidRuntime(595): at testmap.sagem.TestMapActivity.onCreate(TestMapActivity.java:17)
04-17 09:10:31.181: E/AndroidRuntime(595): at android.app.Activity.performCreate(Activity.java:4465)
04-17 09:10:31.181: E/AndroidRuntime(595): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
04-17 09:10:31.181: E/AndroidRuntime(595): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
04-17 09:10:31.181: E/AndroidRuntime(595): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
04-17 09:10:31.181: E/AndroidRuntime(595): at android.app.ActivityThread.access$600(ActivityThread.java:123)
04-17 09:10:31.181: E/AndroidRuntime(595): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
04-17 09:10:31.181: E/AndroidRuntime(595): at android.os.Handler.dispatchMessage(Handler.java:99)
04-17 09:10:31.181: E/AndroidRuntime(595): at android.os.Looper.loop(Looper.java:137)
04-17 09:10:31.181: E/AndroidRuntime(595): at android.app.ActivityThread.main(ActivityThread.java:4424)
04-17 09:10:31.181: E/AndroidRuntime(595): at java.lang.reflect.Method.invokeNative(Native Method)
04-17 09:10:31.181: E/AndroidRuntime(595): at java.lang.reflect.Method.invoke(Method.java:511)
04-17 09:10:31.181: E/AndroidRuntime(595): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
04-17 09:10:31.181: E/AndroidRuntime(595): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
04-17 09:10:31.181: E/AndroidRuntime(595): at dalvik.system.NativeStart.main(Native Method)
当我注释掉“MapView mv=new MapView(this,256);” 它有效，所以我不明白为什么不能实例化地图视图。
对此有任何想法吗？
感谢您的关注。
编辑：AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="testmap.sagem"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-sdk android:minSdkVersion="15" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".TestMapActivity"
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>
</manifest>
main.xml 文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
</LinearLayout>