NoClassDefFoundError MapView活動

Question

我已經向應用添加了mapview活動，嘗試打開mapView activivty會導致崩潰。 我不熟悉這個問題，這里的其他線程傾向於引用libs，我似乎沒有，或類路徑，這可能是問題，但我真的不明白它。

 12-12 18:01:26.075: E/AndroidRuntime(4655): FATAL EXCEPTION: main 12-12 18:01:26.075: E/AndroidRuntime(4655): java.lang.NoClassDefFoundError: com.b00517566.weekST.MyMapViewer 12-12 18:01:26.075: E/AndroidRuntime(4655): at com.b00517566.weekST.WeekSevenTwoActivity.updateWeatherView(WeekSevenTwoActivity.java:144) 12-12 18:01:26.075: E/AndroidRuntime(4655): at com.b00517566.weekST.WeekSevenTwoActivity.access$0(WeekSevenTwoActivity.java:142) 12-12 18:01:26.075: E/AndroidRuntime(4655): at com.b00517566.weekST.WeekSevenTwoActivity$1.onClick(WeekSevenTwoActivity.java:63) 12-12 18:01:26.075: E/AndroidRuntime(4655): at android.view.View.performClick(View.java:4202) 12-12 18:01:26.075: E/AndroidRuntime(4655): at android.view.View$PerformClick.run(View.java:17340) 12-12 18:01:26.075: E/AndroidRuntime(4655): at android.os.Handler.handleCallback(Handler.java:725) 12-12 18:01:26.075: E/AndroidRuntime(4655): at android.os.Handler.dispatchMessage(Handler.java:92) 12-12 18:01:26.075: E/AndroidRuntime(4655): at android.os.Looper.loop(Looper.java:137) 12-12 18:01:26.075: E/AndroidRuntime(4655): at android.app.ActivityThread.main(ActivityThread.java:5039) 12-12 18:01:26.075: E/AndroidRuntime(4655): at java.lang.reflect.Method.invokeNative(Native Method) 12-12 18:01:26.075: E/AndroidRuntime(4655): at java.lang.reflect.Method.invoke(Method.java:511) 12-12 18:01:26.075: E/AndroidRuntime(4655): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 12-12 18:01:26.075: E/AndroidRuntime(4655): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 12-12 18:01:26.075: E/AndroidRuntime(4655): at dalvik.system.NativeStart.main(Native Method) 

public class MyMapViewer extends MapActivity {
        /** Called when the activity is first created. */


        @Override
        public void onCreate(Bundle savedInstanceState) {//class begins
            super.onCreate(savedInstanceState);
            setContentView(R.layout.my_mapview);//sets the layout to the xml

            MapView mapView = (MapView) findViewById(R.id.mapview);//creates a new mapview initialisation
            mapView.setBuiltInZoomControls(true);//adds the zoom function to the map

            List<Overlay> mapOverlays = mapView.getOverlays();//the mapOverlay listobject is initialised to teh mapView
            Drawable drawable = this.getResources().getDrawable(R.drawable.station_icon);//points to marker icon
            MyItemizedOverlay itemizedoverlay = new MyItemizedOverlay(drawable, this);//instantiates Itemizer


            GeoPoint point = new GeoPoint((int)(54.684624 * 1e6),
                    (int)(-5.880218 * 1e6));//converts double cords to microdegrees for Geopoint
            OverlayItem overlayitem = new OverlayItem(point, "Jordanstown", "Shore Road, Newtownabbey, Belfast, Antrim BT370QB ");


            GeoPoint point1 = new GeoPoint((int)(54.66370520273512 * 1e6),
                    (int)(-5.930986404418945 * 1e6));//converts double cords to microdegrees for Geopoint
            OverlayItem overlayitem2 = new OverlayItem(point1, "Valley JuiJitsu Club", "Valley Park Newtownabbey BT36 6");

            GeoPoint point2 = new GeoPoint((int)(54.644600844283104 * 1e6),
                    (int)(-5.666391849517822 * 1e6));//converts double cords to microdegrees for Geopoint
            OverlayItem overlayitem3 = new OverlayItem(point2, "Peninsula Martial Arts", "3 Balloo Link, Bangor, Down BT19 7HJ");

            itemizedoverlay.addOverlay(overlayitem); //calls teh addOverlay method
            mapOverlays.add(itemizedoverlay);//adds above to the itemizedoverlay
         }//end of class





        @Override
        protected boolean isRouteDisplayed() {
            // TODO Auto-generated method stub
            return false;
        }//a necessary generated method
    }

代碼看起來很好，所以問題應該與編輯器或項目屬性中的某些內容相關。 如何解決這個問題的任何建議將不勝感激。

表現

  <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.b00517566.weekST" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="9" /> <uses-permission android:name="android.permission.INTERNET"/> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:name=".WeekSevenTwoActivity" android:label="@string/app_name" > </activity> <activity android:name="splash"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="MyMapViewer" android:theme="@android:style/Theme.NoTitleBar"> </activity> </application> </manifest> 

private void updateWeatherView() {      

startActivity(new Intent(this, MyMapViewer.class));
}//end of method

正如您所看到的，它非常簡單，沒有其他MyMapViewer類

Answer 1

<uses-library android:name="com.google.android.maps" />

mainfest添加此庫

並添加權限

 <!--permissions -->
     <uses-permission
         android:name="android.permission.INTERNET">
     </uses-permission>
     <uses-permission
         android:name="android.permission.ACCESS_FINE_LOCATION">
     </uses-permission>