UITableViewController<UITableViewDelegate, UITableViewDataSource>
@protocol UITableViewDelegate<NSObject, UIScrollViewDelegate>
@optional
// Display customization
- (
void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *
)indexPath;
// Variable height support
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *
)indexPath;
- (CGFloat)tableView:(UITableView *
)tableView heightForHeaderInSection:(NSInteger)section;
- (CGFloat)tableView:(UITableView *
)tableView heightForFooterInSection:(NSInteger)section;
// Section header & footer information. Views are preferred over title should you decide to provide both
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section;
// custom view for header. will be adjusted to default or specified header height
- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section;
// custom view for footer. will be adjusted to default or specified footer height
// Accessories (disclosures).
- (UITableViewCellAccessoryType)tableView:(UITableView *)tableView accessoryTypeForRowWithIndexPath:(NSIndexPath *
)indexPath __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_NA,__MAC_NA,__IPHONE_2_0,__IPHONE_3_0);
- (
void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *
)indexPath;
// Selection
// Called before the user changes the selection. Return a new indexPath, or nil, to change the proposed selection.
- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *
)indexPath;
- (NSIndexPath *)tableView:(UITableView *)tableView willDeselectRowAtIndexPath:(NSIndexPath *
)indexPath __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);
// Called after the user changes the selection.
- (
void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *
)indexPath;
- (
void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *
)indexPath __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);
// Editing
// Allows customization of the editingStyle for a particular cell located at 'indexPath'. If not implemented, all editable cells will have UITableViewCellEditingStyleDelete set for them when the table has editing property set to YES.
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *
)indexPath;
- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *
)indexPath __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);
// Controls whether the background is indented while editing.If not implemented, the default is YES.This is unrelated to the indentation level below.This method only applies to grouped style table views.
- (BOOL)tableView:(UITableView *)tableView shouldIndentWhileEditingRowAtIndexPath:(NSIndexPath *
)indexPath;
// The willBegin/didEnd methods are called whenever the 'editing' property is automatically changed by the table (allowing insert/delete/move). This is done by a swipe activating a single row
- (
void)tableView:(UITableView*)tableView willBeginEditingRowAtIndexPath:(NSIndexPath *
)indexPath;
- (
void)tableView:(UITableView*)tableView didEndEditingRowAtIndexPath:(NSIndexPath *
)indexPath;
// Moving/reordering
// Allows customization of the target row for a particular row as it is being moved/reordered
- (NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *
)proposedDestinationIndexPath;
// Indentation
- (NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath;
// return 'depth' of row for hierarchies
@end
@protocol UITableViewDataSource<NSObject>
@required
- (NSInteger)tableView:(UITableView *
)table numberOfRowsInSection:(NSInteger)section;
// Row display. Implementers should *always* try to reuse cells by setting each cell's reuseIdentifier and querying for available reusable cells with dequeueReusableCellWithIdentifier:
// Cell gets various attributes set automatically based on table (separators) and data source (accessory views, editing controls)
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *
)indexPath;
@optional
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView;
// Default is 1 if not implemented
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section;
// fixed font style. use custom view (UILabel) if you want something different
- (NSString *)tableView:(UITableView *
)tableView titleForFooterInSection:(NSInteger)section;
// Editing
// Individual rows can opt out of having the -editing property set for them. If not implemented, all rows are assumed to be editable.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *
)indexPath;
// Moving/reordering
// Allows the reorder accessory view to optionally be shown for a particular row. By default, the reorder control will be shown only if the datasource implements -tableView:moveRowAtIndexPath:toIndexPath:
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *
)indexPath;
// Index
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView;
// return list of section titles to display in section index view (e.g. "ABCD...Z#")
- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index;
// tell table which section corresponds to section title/index (e.g. "B",1))
// Data manipulation - insert and delete support
// After a row has the minus or plus button invoked (based on the UITableViewCellEditingStyle for the cell), the dataSource must commit the change
- (
void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *
)indexPath;
// Data manipulation - reorder / moving support
- (
void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *
)destinationIndexPath;
@end
DataPicker : NSData *selectedData = [myDataPicker data];
感觉自定义的Picker和TableView的使用方法差不多，相应的delegate和dataSource也差不多！
@protocol UIPickerViewDelegate<NSObject>
@optional
// returns width of column and height of row for each component.
- (CGFloat)pickerView:(UIPickerView *
)pickerView widthForComponent:(NSInteger)component;
- (CGFloat)pickerView:(UIPickerView *
)pickerView rowHeightForComponent:(NSInteger)component;
// these methods return either a plain UIString, or a view (e.g UILabel) to display the row for the component.
// for the view versions, we cache any hidden and thus unused views and pass them back for reuse.
// If you return back a different object, the old one will be released. the view will be centered in the row rect
- (NSString *)pickerView:(UIPickerView *
)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *
)view;
- (
void)pickerView:(UIPickerView *
)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component;
@end
@protocol UIPickerViewDataSource<NSObject>
@required
// returns the number of 'columns' to display.
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *
)pickerView;
// returns the # of rows in each component..
- (NSInteger)pickerView:(UIPickerView *
)pickerView numberOfRowsInComponent:(NSInteger)component;
@optional
// returns width of column and height of row for each component.
- (CGFloat)pickerView:(UIPickerView *
)pickerView widthForComponent:(NSInteger)component;
- (CGFloat)pickerView:(UIPickerView *
)pickerView rowHeightForComponent:(NSInteger)component;
// these methods return either a plain UIString, or a view (e.g UILabel) to display the row for the component.
// for the view versions, we cache any hidden and thus unused views and pass them back for reuse.
// If you return back a different object, the old one will be released. the view will be centered in the row rect
- (NSString *)pickerView:(UIPickerView *
)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *
)view;
- (
void)pickerView:(UIPickerView *
)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component;
@end
转载于:https://www.cnblogs.com/tracy-e/archive/2010/08/05/1793459.html
