Gets the row index of item at given index.

Returns the index for the first occurrence of item in the adapter, or -1 if not found. @param item The item to find in the list. @return Index of th

Invalidate items after or equal to index. This will remove visible items after that and invalidate cache of layout results after that.

To determine whether the data are loaded complete

To determine whether the data are loaded complete

determine whether the focus is located on the bottom row @return true if the focus on the bottom row

determine whether the focus is located on the leftmost column @return true if the focus on the leftmost column

determine whether the focus is located on the rightmost column @return true if the focus on the rightmost column

determine whether the focus is located on the top row @return true if the focus on the top row

Load view from states, it's none operation if the there is no state associated with the id. @param view view where loads into @param id unique id f

notify more data is loading

notify more data is loading

Callback method to be invoked when a child of this ViewGroup has been added to the view hierarchy and has been laid out. @param parent The ViewGroup

Returns the view where focus should be requested given the current focused view and the direction of focus search.

Called when {@link #setHasStableIds(boolean)} is called and the status of stable ids has changed.

Returns true if the touch dispatch event should be consumed.

Returns true if the touch dispatch event should be consumed.

Called when a range of items in the ObjectAdapter has changed. The basic ordering and structure of the ObjectAdapter has not changed. @param position

Called when a range of items is inserted into the ObjectAdapter. @param positionStart The position of the first inserted item. @param itemCount The n

Called when a range of items is removed from the ObjectAdapter. @param positionStart The position of the first removed item. @param itemCount The num

Called when {@link #setPresenterSelector(PresenterSelector)} is called and the PresenterSelector differs from the previous one.

See {@link android.view.ViewGroup#requestChildFocus( View, View)}.

Prepends items using cached locations, returning true if toLimit is reached. This method should only be called by prependVisibleItems().

Prepends items until first item or reaches toLimit (min edge when not reversed or max edge when reversed)

This implements the algorithm of layout staggered grid, the method should only be called by prependVisibleItems().

Removes the first occurrence of the given item from the adapter. @param item The item to remove from the adapter. @return True if the item was found

Removes invisible items from end until reaches item at aboveIndex or toLimit.

Removes invisible items from front until reaches item at belowIndex or toLimit.

@return the saved views states

Save off screen views according to policy. @param view view to save @param id unique id for the view within this ViewsStateBundle

Save views regardless what's the current policy is. @param view view to save @param id unique id for the view within this ViewsStateBundle

Sets the gravity used for child view positioning. Defaults to GRAVITY_TOP|GRAVITY_START. @param gravity See {@link Gravity}

Sets the margin in pixels between two child items horizontally.

@see ViewsStateBundle#getLimitNumber()

update max scroll, Integer.MAX_VALUE means unknown

set minScroll, Integer.MIN_VALUE means unknown

Sets the number of columns. Defaults to one.