CCControlPickerDataSource Protocol Reference
| Conforms to | NSObject |
| Declared in | CCControlPicker.h |
Overview
The CCControlPickerDataSource protocol must be adopted by an object that mediates between a CCControlPicker object and your application’s data model for that control picker. The data source provides the control picker with the number of components, and the number of rows in the component, for displaying the control picker data. Both methods in this protocol are required.
Tasks
Providing Counts for the Control Picker
-
– numberOfRowsInControlPicker:Called by the picker control when it needs the number of rows. (required)
required method
Setting the Content of Component Rows
-
– controlPicker:nodeForRow:Called by the picker control when it needs the node to use for a given row.
required method
Instance Methods
controlPicker:nodeForRow:
Called by the picker control when it needs the node to use for a given row.
- (CCControlPickerRow *)controlPicker:(CCControlPicker *)controlPicker nodeForRow:(NSUInteger)rowParameters
- controlPicker
An object representing the control picker requesting the data.
- row
A zero-indexed number identifying a row of component. Rows are numbered top-to-bottom.
Return Value
The node to use as the visual representation of the indicated row.
Declared In
CCControlPicker.hnumberOfRowsInControlPicker:
Called by the picker control when it needs the number of rows. (required)
- (NSUInteger)numberOfRowsInControlPicker:(CCControlPicker *)controlPickerParameters
- controlPicker
The picker control requesting the data.
Return Value
The number of rows.
Discussion
Called by the picker control when it needs the number of rows. (required)
Declared In
CCControlPicker.h