com.alexvasilkov.gestures.transition.tracker

Interface IntoTracker<ID>

All Known Implementing Classes:

SimpleTracker

public interface IntoTracker<ID>

Field Summary

Fields

Modifier and Type	Field and Description
static int	NO_POSITION

Method Summary

Modifier and Type	Method and Description
ID	getIdByPosition(int position)
int	getPositionById(ID id)
android.view.View	getViewById(ID id)

Field Detail

NO_POSITION

static final int NO_POSITION

See Also:

Constant Field Values

Method Detail

getIdByPosition

@Nullable
ID getIdByPosition(int position)

Parameters:

position - List position

Returns:

Item's id at given position, or null if position is invalid. Note, that only one id per position should be possible for "To" view.

getPositionById

int getPositionById(@NonNull
                    ID id)

Parameters:

id - Item ID

Returns:

Position of list item which contains element with given ID, or NO_POSITION if element with given ID is not part of the list.
Note, that there can be several elements inside single list item, but we only need to know list item position, so we can scroll to it if required.

getViewById

@Nullable
android.view.View getViewById(@NonNull
                                        ID id)

Parameters:

id - Item ID

Returns:

View for given element ID, or null if view is not found.
Note, that it is safe to return null if view is not found on the screen, list view will be automatically scrolled to needed position (as returned by getPositionById(Object)) and this method will be called again.