Restrict MapView area on OSMdroid

Question

I'm trying to restrict the map view for OSM given the 4 points to act as corers.

In reference to this question, I am also trying to use the BoundedMapView.java (got from this website) to help me with this.

This is my activity codes:

public class POfflineMapView extends Activity implements LocationListener, MapViewConstants{

    private BoundedMapView myOpenMapView;
    //... removed unreleated variables
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    mResourceProxy = new DefaultResourceProxyImpl(getApplicationContext());
    setContentView(R.layout.offline_map_activity);
    myOpenMapView = (BoundedMapView) findViewById(R.id.openmapview);
    myOpenMapView.getTileProvider().clearTileCache();

    //removed unlreleated codes

    BoundingBoxE6 bbox = new BoundingBoxE6(north,east,south,west);
    myOpenMapView.setScrollableAreaLimit(bbox);
    }
}   

This is my xml:

<LinearLayout 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"
android:orientation="vertical" >

    <entity.BoundedMapView
        android:id="@+id/openmapview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"/>
</LinearLayout>

My LogCat shows this error:

12-28 17:24:11.830: E/AndroidRuntime(14459): Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet]

I'm unsure why I am still getting this error; the BoundedMapView is extended from the MapView class, why is it still having an error for the Constructor?

Kindly enlighten if I do not seem to be interpreting this error correctly, thanks!

Answer 1

It's because when you create a BoundedMapView in xml code, it calls this constructor, which is missing:

public BoundedMapView(final Context context, final AttributeSet attrs) {
    super(context, 256, new DefaultResourceProxyImpl(context), null, null, attrs);
}