Common methods in IOS, Uitableviewdatasource, and uitableviewdelegate protocols

common methods in Uitableviewdatasource protocol

1. Set the right side Index Value

-(nsarray *) Sectionindextitlesfortableview: ( UITableView *) TableView

2. set up grouping identities

-(nsstring *) TableView: ( UITableView *) TableView titleforheaderinsection: (nsinteger) section

3.set Number of groups
- (Nsinteger) Numberofsectionsintableview: (UITableView*) TableView

4. Set the number of rows

-(nsinteger) TableView: ( UITableView *) TableView numberofrowsinsection: (nsinteger) section

5.Createcell (using the reuse mechanism, as in the following example)
- (UITableViewCell*) TableView: (UITableView*) TableView Cellforrowatindexpath: (Nsindexpath*) Indexpath
{
1.creating a reuse identifier
   StaticNSString*identifier =@ "Reuse";

2. go to the reuse queue to take reusable cells from identifiers

Addressbookcell *cell = [TableViewdequeuereusablecellwithidentifier: Identifier];

3. determine whether to obtain a reusable cell ( finally space free )

if (!cell) {

cell = [[[addressbookcellalloc]initwithstyle: Uitableviewcellstyledefaultreuseidentifier: identifier]autorelease ];

}

return cell;
}
6.SetTableViewthe edit state of each row(YES, editable)
- (BOOL) TableView: (UITableView*) TableView Caneditrowatindexpath: (Nsindexpath*) Indexpath
{
return YES
}

7.edit button's Click event ( triggered when the edit button is clicked )

-(void) setediting: ( BOOL ) Editing animated: (BOOL) animated

8. Triggers when an edit operation is committed

-(void) TableView: ( UITableView *) TableView Commiteditingstyle: (uitableviewcelleditingstyle) Editingstyle Forrowatindexpath :(nsindexpath *) Indexpath

9. Set tableView If each row is allowed to move (YES, movable)

-(BOOL) TableView: ( UITableView *) TableView Canmoverowatindexpath: (nsindexpath *) Indexpath

{
return YES
}

triggering after committing a move operation

-(void) TableView: ( UITableView *) TableView Moverowatindexpath: (nsindexpath *) Sourceindexpath Toindexpath: ( Nsindexpath *) Destinationindexpath

common methods in Uitableviewdelegate protocol

1. Set the row height

-(cgfloat) TableView: ( UITableView *) TableView Heightforrowatindexpath: (nsindexpath *) Indexpath

{
return;
}

2. trigger When cell is selected

-(void) TableView: ( UITableView *) TableView Didselectrowatindexpath: (nsindexpath *) Indexpath

3. set the edit style for Tableviewcell ( insert / Delete )

-(uitableviewcelleditingstyle) TableView: ( UITableView *) TableView Editingstyleforrowatindexpath: (nsindexpath *) Indexpath

4. set the text shown above when you click the Edit button , such as show delete

-( nsstring Span style= "font:18.0px Menlo" > *) TableView: ( uitableview *) TableView Titlefordeleteconfirmationbuttonforrowatindexpath: ( Span style= "color: #6122ae; font:18.0px Menlo ">nsindexpath *) Indexpath ns_available_ios ( 3 _0) {    return @ " delete " ;}

5. Set the cell Move location

-(nsindexpath *) TableView: ( UITableView *) TableView Targetindexpathformovefromrowatindexpath: (nsindexpath *) Sourceindexpath Toproposedindexpath: (nsindexpath *) Proposeddestinationindexpath

Common methods in IOS, Uitableviewdatasource, and uitableviewdelegate protocols