RecyclerViewExpandableItemManager

Packed position version of NO_POSITION

Constructor.

Attaches android.support.v7.widget.RecyclerView instance.

Before calling this method, the target android.support.v7.widget.RecyclerView must set the wrapped adapter instance which is returned by the createWrappedAdapter(android.support.v7.widget.RecyclerView.Adapter) method.

Collapse all groups.

Note that this method does not invoke the onGroupCollapse(int, boolean, Object) callback.

Collapse a group.

Collapse a group.

Create wrapped adapter.

Expand all groups.

Note that this method does not invoke the onGroupExpand(int, boolean, Object) callback.

Expand a group.

Expand a group.

Gets the number of children in a specified group.

Gets child item ID from a raw ID.

Gets child view type from a raw view type.

Gets the number of collapsed groups.

Gets combined ID for child item.

bit 0-27: Lower 28 bits of the childId bit 28-55: Lower 28 bits of the groupId bit 56-61: reserved

Gets combined ID for child item.

bit 0-27: all bits are set to 1 bit 28-55: Lower 28 bits of the groupId bit 56-61: reserved

Gets default group items expanded state

Converts a flat position (the raw position of an item in the list) to a group and/or child position (represented in a packed position). Use getPackedPositionChild(long), getPackedPositionGroup(long) to unpack.

Gets the number of expanded groups.

Converts a group and/or child position to a flat position.

Gets the number of groups.

Gets group item ID from a raw ID.

Gets group view type from a raw view type.

Gets the child position from a packed position. To get the group that this child belongs to, use getPackedPositionGroup(long). See getPackedPositionForChild(int, int).

Returns the packed position representation of a child position.

In general, a packed position should be used in situations where the position given to/returned from RecyclerViewExpandableItemManager method can either be a child or group. The two positions are packed into a single long which can be unpacked using getPackedPositionChild(long) and getPackedPositionGroup(long).

Returns the packed position representation of a group's position. See getPackedPositionForChild(int, int).

Gets the group position from a packed position. See getPackedPositionForChild(int, int).

Gets saved state object in order to restore the internal state.

Call this method in Activity/Fragment's onSavedInstance() and save to the bundle.

Whether the all groups are expanded.

Whether the all groups are expanded.

Whether the given group is currently expanded.

Checks whether the passed item ID is a group's one.

Checks whether the passed view type is a group's one.

Indicates this manager instance has released or not.

Notify any registered observers that the child item at {groupPosition, childPosition} has changed.

This is an item change event, not a structural change event. It indicates that any reflection of the data at {groupPosition, childPosition} is out of date and should be updated. The item at {groupPosition, childPosition} retains the same identity.

Notify any registered observers that the child item at {groupPosition, childPosition} has changed.

This is an item change event, not a structural change event. It indicates that any reflection of the data at {groupPosition, childPosition} is out of date and should be updated. The item at {groupPosition, childPosition} retains the same identity.

Notify any registered observers that the group item reflected at groupPosition has been newly inserted. The group item previously at groupPosition is now at position groupPosition + 1.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the child item reflected at fromGroupPosition, fromChildPosition has been moved to toGroupPosition, toChildPosition.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the child item reflected at groupPosition, fromChildPosition has been moved to groupPosition, toChildPosition.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the itemCount child items starting at position {groupPosition, childPosition} have changed.

This is an item change event, not a structural change event. It indicates that any reflection of the data in the given position range is out of date and should be updated. The items in the given range retain the same identity.

Notify any registered observers that the itemCount child items starting at position {groupPosition, childPosition} have changed.

This is an item change event, not a structural change event. It indicates that any reflection of the data in the given position range is out of date and should be updated. The items in the given range retain the same identity.

Notify any registered observers that the currently reflected itemCount child items starting at childPositionStart have been newly inserted. The child items previously located at childPositionStart and beyond can now be found starting at position childPositionStart + itemCount.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the itemCount child items previously located at childPositionStart have been removed from the data set. The child items previously located at and after childPositionStart + itemCount may now be found at oldPosition - itemCount.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the child item previously located at childPosition has been removed from the data set. The child items previously located at and after childPosition may now be found at oldGroupPosition - 1.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the children items contained in the group item at groupPosition have changed.

This is an group item change event, not a structural change event. It indicates that any reflection of the data at groupPosition is out of date and should be updated. The item at groupPosition retains the same identity.

This method does not notify for the group item. If the group has also changed, use notifyGroupAndChildrenItemsChanged(int) instead.

Notify any registered observers that the children items contained in the group item at groupPosition have changed.

This is an group item change event, not a structural change event. It indicates that any reflection of the data at groupPosition is out of date and should be updated. The item at groupPosition retains the same identity.

This method does not notify for the group item. If the group has also changed, use notifyGroupAndChildrenItemsChanged(int) instead.

Notify any registered observers that the group and children items at groupPosition have changed.

This is an group item change event, not a structural change event. It indicates that any reflection of the data at groupPosition is out of date and should be updated. The item at groupPosition retains the same identity.

Notify any registered observers that the group and children items at groupPosition have changed.

This is an group item change event, not a structural change event. It indicates that any reflection of the data at groupPosition is out of date and should be updated. The item at groupPosition retains the same identity.

Notify any registered observers that the group item at groupPosition has changed with an optional payload object.

This is an group item change event, not a structural change event. It indicates that any reflection of the data at groupPosition is out of date and should be updated. The item at groupPosition retains the same identity.

This method does not notify for children that are contained in the specified group. If children have also changed, use notifyGroupAndChildrenItemsChanged(int, Object) instead.

Client can optionally pass a payload for partial change. These payloads will be merged and may be passed to adapter's onBindGroupViewHolder(RecyclerView.ViewHolder, int, int, List) if the item is already represented by a ViewHolder and it will be rebound to the same ViewHolder. A notifyItemRangeChanged() with null payload will clear all existing payloads on that item and prevent future payload until onBindGroupViewHolder(RecyclerView.ViewHolder, int, int, List) is called. Adapter should not assume that the payload will always be passed to onBindGroupViewHolder(), e.g. when the view is not attached, the payload will be simply dropped.

Notify any registered observers that the group item at groupPosition has changed.

This is an group item change event, not a structural change event. It indicates that any reflection of the data at groupPosition is out of date and should be updated. The item at groupPosition retains the same identity.

This method does not notify for children that are contained in the specified group. If children have also changed, use notifyGroupAndChildrenItemsChanged(int) instead.

Notify any registered observers that the group item reflected at groupPosition has been newly inserted. The group item previously at groupPosition is now at position groupPosition + 1.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the group item reflected at groupPosition has been newly inserted. The group item previously at groupPosition is now at position groupPosition + 1.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the group item reflected at fromGroupPosition has been moved to toGroupPosition.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the currently reflected itemCount group items starting at groupPositionStart have been newly inserted and may be expanded. The group items previously located at groupPositionStart and beyond can now be found starting at position groupPositionStart + itemCount.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the currently reflected itemCount group items starting at groupPositionStart have been newly inserted. The group items previously located at groupPositionStart and beyond can now be found starting at position groupPositionStart + itemCount.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the itemCount group items previously located at groupPositionStart have been removed from the data set. The group items previously located at and after groupPositionStart + itemCount may now be found at oldPosition - itemCount.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Notify any registered observers that the group item previously located at groupPosition has been removed from the data set. The group items previously located at and after groupPosition may now be found at oldGroupPosition - 1.

This is a structural change event. Representations of other existing items in the data set are still considered up to date and will not be rebound, though their positions may be altered.

Detach the android.support.v7.widget.RecyclerView instance and release internal field references.

This method should be called in order to avoid memory leaks.

Restore saves state. See restoreState(android.os.Parcelable, boolean, boolean). (This method does not invoke any hook methods and listener events)

Restore saves state.

This method is useful when the adapter can not be prepared (because data loading may takes time and processed asynchronously) before creating this manager instance.

Scroll to a group.

Scroll to a group.

Scroll to a group.

Scroll to a group with specifying total children height.

Scroll to a group with specifying total children height.

Sets default group items expanded state

Register a callback to be invoked when an group item has been collapsed.

Register a callback to be invoked when an group item has been expanded.