Chapter 22 TableView TableView. TableView ios. ViewController. Cell TableViewCell TableView

Transcription

1 Chapter 22 TableView TableView Android TableView ListView App 22.1 TableView TableView Storyboard Table View ViewController TableView ios Cell TableViewCell TableView

2 Table View Cell Cell ImageView (imageview) Label (textlabel detailtextlabel) Style Basic Label (detailtextlabel) ( ImageView Label)

3 Style Right Detail detailtextlabel Style Left Detail ImageView

4 Style Subtitle Style Image ImageView Identifier appcell Accessory Cell (Indicator) Disclosure Indicator >

5 Detail Disclosure Checkmark (Detail )

6 Prototype Cell TableView Attributes Inspector Prototype Cells 0 1 TableView Prototype Cells [1] TableView Prototype Cells Switch Storyboard TableView datasource ViewController

7 1 class ViewController: UIViewController, UITableViewDataSource { 2 3 var imgs = ["shift", "daycounter", "oilconsume", "mps"] 4 var appnames = [" ", " ", " ", 5 " "] 6 var status = ["ios & Android", "Android", " ", "Android"] 7 8 func tableview(_ tableview: UITableView, cellforrowat indexpath: 9 IndexPath) -> UITableViewCell { let cell: UITableViewCell = 12 tableview.dequeuereusablecell(withidentifier: "appcell", 13 for: indexpath) 14 let row = indexpath.row 15 cell.imageview?.image = UIImage(named: imgs[row]) 16 cell.textlabel?.text = appnames[row] 17 cell.detailtextlabel?.text = status[row] 18 return cell 19 }

8 20 func tableview(_ tableview: UITableView, numberofrowsinsection 21 section: Int) -> Int { return appnames.count 24 } override func viewdidload() { 27 super.viewdidload() 28 } override func didreceivememorywarning() { 31 super.didreceivememorywarning() 32 } 33 } TableView datasource ViewController? 1 ViewController UITableViewDataSource tableview(_ tableview: UITableView, numberofrowsinsection section: Int) tableview(_ tableview: UITableView, cellforrowat indexpath: IndexPath) 11 UITableViewCell tableview dequeuereusablecellwithidentifier Prototype Cell Storyboard Prototype Cell Identifier Identifier indexpath 14 indexpath (row) TableView Prototype Cell ImageView Label 15 ~ 17 3 View 22.2 TableView TableView delegate Storyboard (1) Label TableView Label (2) TableView delegate ViewController

9 1 class ViewController: UIViewController, UITableViewDataSource, 2 UITableViewDelegate { 3 weak var appdesc: UILabel! 5 6 var desc = [" App", ", 7 " ", " "] 8 9 func tableview(_ tableview: UITableView, didselectrowat indexpath: 10 IndexPath) { appdesc.text = desc[indexpath.row] 13 } // 14 } Storyboard TableView delegate ViewController 1 ViewController UITableViewDelegate 4 Label UITableViewDelegate tableview(tableview: UITableView, didselectrowatindexpath indexpath: NSIndexPath)

10 22.3 TableView section ( ) section? 3 section Storyboard TableView Style Plain Grouped

11 1 class ViewController: UIViewController, UITableViewDataSource { 2 3 var imgs = ["shift", "daycounter", "mps", "oilconsume"] 4 var appnames = [" ", " ", ", 5 " "] 6 var status = ["ios & Android", "Android", "Android", " "] 7 8 func numberofsectionsintableview(tableview: UITableView) -> Int { 9 return 3 10 } func tableview(_ tableview: UITableView, cellforrowat indexpath: 13 IndexPath) -> UITableViewCell { let cell: UITableViewCell = 16 tableview.dequeuereusablecell(withidentifier: "appcell", 17 for: indexpath) let section = indexpath.section 20 let row = indexpath.row if section == 0 { 23 cell.imageview?.image = UIImage(named: imgs[0]) 24 cell.textlabel?.text = appnames[0] 25 cell.detailtextlabel?.text = status[0] 26 } else if section == 1 { 27 cell.imageview?.image = UIImage(named: imgs[row+1]) 28 cell.textlabel?.text = appnames[row+1] 29 cell.detailtextlabel?.text = status[row+1] 30 } else { 31 cell.imageview?.image = UIImage(named: imgs[3]) 32 cell.textlabel?.text = appnames[3] 33 cell.detailtextlabel?.text = status[3] 34 } 35 return cell 36 } func tableview(_ tableview: UITableView, numberofrowsinsection 39 section: Int) -> Int { if section == 0 { 42 return 1 43 } else if section == 1 { 44 return 2 45 } 46 return 1 47 } override func viewdidload() { 50 super.viewdidload() 51 } override func didreceivememorywarning() { 54 super.didreceivememorywarning() 55 } 56 }

12 3 UITableViewDataSource numberofsectionsintableview Section 3 tableview(tableview: UITableView, cellforrowatindexpath indexpath: NSIndexPath) 15.1 indexpath row 19 section section 0 22 ~ 35 tableview(tableview: UITableView, numberofrowsinsection section: Int) section [1] App Store App, id ?l=zh&mt=8