Question

我正在尝试将OSMdroid用于项目，而且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等，现在我甚至无法实例化MapView。我将代码缩减为最简单的形式。我和eclipse一起工作。我下载了osmdroid-android-3.0.5.jar和slf4j-android-1.5.8.jar，我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);

    }
}

我在模拟器上运行时遇到错误：

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)

当我评论出“MapView mv = new MapView（this，256）;”时它有效，所以我不明白为什么无法实例化mapview。

对此有什么想法吗？

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>

Answer 1

将文件夹名称“lib”更改为“libs”，并将所有jar文件放在该文件夹中，并将jar的充电路径放入文件到“libs”文件夹。我不确定，但我认为它会起作用。

Answer 2

尝试使用3.0.7并清理项目。让我知道。 http://code.google.com/p/osmdroid/downloads/list

无法实例化OsmDroid MapView

2 个答案: