NetworkConnectivityListener class not found on UPC300-2.2 Viewsonic G-Tablet

I am getting this error in my application, and this happens only on UPC300-2.2 Viewsonic G-Tablet. All answers I've found so far (including this one) adviced on putting

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

to the manifest file, but it doesn't help.

Here is the complete stacktrace:

java.lang.NoClassDefFoundError: android.net.NetworkConnectivityListener

at com.google.android.maps.MapActivity.onCreate(MapActivity.java:199) at myapp.Activity.ActivityMapSearch.onCreate(ActivityMapSearch.java:99) at android开发者_如何学C.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) at android.app.ActivityThread.access$2300(ActivityThread.java:125) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:123) at android.app.ActivityThread.main(ActivityThread.java:4627) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) at dalvik.system.NativeStart.main(Native Method)

If that is TRUE, you can grab the source code of the class from the Android Source and add it yourself