Fix ItemLongClick and ItemClick both firing in Gallery widget

Gallery.java

 /**
  * This change should work in both the original Gallery code as well as in the vairous open source
  * extensions and variations.
  * 
  * Find the displatchLongPress method in the Gallery class file. and update it to the following.
  * 
  * Make sure that longPressHandled is a field available to all the other methods.
  * 
  */
    boolean longPressHandled =  false;
	private boolean dispatchLongPress(View view, int position, long id) {
		longPressHandled = false;

		if (mOnItemLongClickListener != null) {
			longPressHandled = mOnItemLongClickListener.onItemLongClick(this,
					mDownTouchView, mDownTouchPosition, id);
		}

		if (!longPressHandled) {
			mContextMenuInfo = new AdapterContextMenuInfo(view, position, id);
			longPressHandled = super.showContextMenuForChild(this);
		}

		if (longPressHandled) {
			performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
		}

		return longPressHandled;
	}

    /**
     * Find the onKeyUp method and change it to the following.
     * 
     * Since dispatchLongPress is fired before the onKeyUp event, we have
     * to check to see if the onItemLongClickListener handled the event.
     * If so do not performItemClick, and always reset the longPressHandled to false.
     * 
     */
	@Override
	public boolean onKeyUp(int keyCode, KeyEvent event) {
		switch (keyCode) {
		case KeyEvent.KEYCODE_DPAD_CENTER:
		case KeyEvent.KEYCODE_ENTER: {

			if (mReceivedInvokeKeyDown) {
				if (mItemCount > 0) {

					dispatchPress(mSelectedChild);
					postDelayed(new Runnable() {
						@Override
						public void run() {
							dispatchUnpress();
						}
					}, ViewConfiguration.getPressedStateDuration());

					int selectedIndex = mSelectedPosition - mFirstPosition;

					if (!longPressHandled) {
						performItemClick(getChildAt(selectedIndex),
								mSelectedPosition,
								mAdapter.getItemId(mSelectedPosition));
					}
				}
			}

			// Clear the flag
			mReceivedInvokeKeyDown = false;
			longPressHandled = false;

			return true;
		}
		}

		return super.onKeyUp(keyCode, event);
	}