Android - PullToRefresh ClassCastException

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Please bear with me on this one; since, I'm a newbie in Android/Java.

I use PullToRefresh library (from Chrisbanes) and having a LoadMoreGridView for my Android app. When I run the app, I encounter ClassCassException:

java.lang.ClassCastException: com.handmark.pulltorefresh.library.PullToRefreshGridView cannot be cast to com.mycommon.utils.LoadMoreGridView    

Frankly, I cannot figure it out whether I cast proper type to LoadMoreGridView. The following is my partial GridFragment.java that do the cast to LoadMoreGridView:

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2;
import com.handmark.pulltorefresh.library.PullToRefreshGridView;
import com.mycommom.utils.LoadMoreGridView;
import com.mycommom.utils.LoadMoreGridView.OnLoadMoreListener;

public class GridFragment extends Fragment {
...
private PullToRefreshGridView mPullRefreshGridView;
private LoadMoreGridView mGridView;
...
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
...
        mPullRefreshGridView = (PullToRefreshGridView) v.findViewById(R.id.feedgrid);
        mGridView = (LoadMoreGridView) mPullRefreshGridView.getRefreshableView();
...

And this the following is the partial com.mycommon.utils.LoadMoreGridView:

public class LoadMoreGridView
  extends GridView
  implements AbsListView.OnScrollListener
{
  private static final String TAG = "LoadMoreListView";
  private AbsListView.OnScrollListener mOnScrollListener;
  private LayoutInflater mInflater;
  private RelativeLayout mFooterView;
  private ProgressBar mProgressBarLoadMore;
  private OnLoadMoreListener mOnLoadMoreListener;
  private boolean mIsLoadingMore = false;
  private int mCurrentScrollState;

  public LoadMoreGridView(Context context)
  {
     super(context);

     init(context);
  }

  public LoadMoreGridView(Context context, AttributeSet attrs)
  {
     super(context, attrs);
     init(context);
  }

  public LoadMoreGridView(Context context, AttributeSet attrs, int defStyle)
  {
     super(context, attrs, defStyle);
     init(context);
  }

  private void init(Context context)
  {
     this.mInflater = 
       ((LayoutInflater)context.getSystemService("layout_inflater"));

     super.setOnScrollListener(this);
  }

...

And this is the PullRefreshGridView.java by Chrisbanes:

import ...
public class PullToRefreshGridView extends PullToRefreshAdapterViewBase<GridView> {

public PullToRefreshGridView(Context context) {
    super(context);
}

public PullToRefreshGridView(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public PullToRefreshGridView(Context context, Mode mode) {
    super(context, mode);
}

public PullToRefreshGridView(Context context, Mode mode, AnimationStyle style) {
    super(context, mode, style);
}

@Override
public final Orientation getPullToRefreshScrollDirection() {
    return Orientation.VERTICAL;
}

@Override
protected final GridView createRefreshableView(Context context, AttributeSet attrs) {
    final GridView gv;
    if (VERSION.SDK_INT >= VERSION_CODES.GINGERBREAD) {
        gv = new InternalGridViewSDK9(context, attrs);
    } else {
        gv = new InternalGridView(context, attrs);
    }

    // Use Generated ID (from res/values/ids.xml)
    gv.setId(R.id.gridview);
    return gv;
}

...

    @TargetApi(9)
    final class InternalGridViewSDK9 extends InternalGridView {

    public InternalGridViewSDK9(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected boolean overScrollBy(int deltaX, int deltaY, int scrollX, int scrollY, int scrollRangeX,
            int scrollRangeY, int maxOverScrollX, int maxOverScrollY, boolean isTouchEvent) {

        final boolean returnValue = super.overScrollBy(deltaX, deltaY, scrollX, scrollY, scrollRangeX,
                scrollRangeY, maxOverScrollX, maxOverScrollY, isTouchEvent);


     OverscrollHelper.overScrollBy(PullToRefreshGridView.this, deltaX, scrollX, deltaY, scrollY, isTouchEvent);

        return returnValue;
          }
    }
}

Any help on the above issue is really appreciated. Thank you!

asked 8 secs ago

Bean

1

Android - PullToRefresh ClassCastException