UITableViewCell Tipo di accesso selezionato Toccare e impostare altro deselezionato

Question

Sono un po 'confuso circa gli accessori della cella di visualizzazione tabella delle impostazioni.

ho fissato due sezioni in mia tabella

• casa
• Ufficio

Quello che voglio è la seguente ....

• Quando toccare utente qualsiasi la cella
• La cella viene selezionata &
  • voglio impostare controllato (impostare il tipo di UITableViewCell accessorio -checked di cellula sfruttato)
• E anche tipo di accessorio di tutti gli altri cellulare ora deve impostare a
  • vista uitable tipo di accessorio cellule nessuno

Ho provato il seguente codice. Ma ho trovato che indexpath.row & indexpath.section è proprietà readonly.

// Override to support row selection in the table view. 
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {  
    [tblProfileView deselectRowAtIndexPath:indexPath animated:YES]; 
    int i,max; 
    UITableViewCell *x; NSIndexPath *tt; 

    for(i=0;i<[tblProfileView numberOfRowsInSection:0];i++) 
    { 
     tt.row=i; tt.section=0; 
     x=[tblProfileView cellForRowAtIndexPath:]; 
     [x setAccessoryType:UITableViewCellAccessoryNone]; 
    } 
    for(i=0;i<[tblProfileView numberOfRowsInSection:1];i++) 
    { 
     tt.row=i; tt.section=1; 
     x=[tblProfileView cellForRowAtIndexPath:tt]; 
     [x setAccessoryType:UITableViewCellAccessoryNone]; 
    } 

    x=[tblProfileView cellForRowAtIndexPath:indexPath]; 
    [x setAccessoryType:UITableViewCellAccessoryCheckmark]; 
    // Navigation logic may go here -- for example, create and push another view controller. 
    // AnotherViewController *anotherViewController = [[AnotherViewController alloc] initWithNibName:@"AnotherView" bundle:nil]; 
    // [self.navigationController pushViewController:anotherViewController animated:YES]; 
    // [anotherViewController release]; 
} 

Answer 1

vorrei tenere traccia dei datiche devono essere controllati e cambiare la cella in tableView: didSelectRowAtIndexPath: e aggiornare cui i dati vengono controllati in tableView: cellForRowAtIndexPath: in questo modo:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
    // do usual stuff here including getting the cell 

    // determine the data from the IndexPath.row 

    if (data == self.checkedData) 
    { 
     cell.accessoryType = UITableViewCellAccessoryCheckmark; 
    } else { 
     cell.accessoryType = UITableViewCellAccessoryNone; 
    } 

    return cell; 
} 

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 
    // determine the selected data from the IndexPath.row 

    if (data != self.checkedData) { 
     self.checkedData = data; 
    } 

    [tableView reloadData]; 
} 

Answer 2

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{ 

    UITableViewCell *newCell = [tableView cellForRowAtIndexPath:indexPath]; 

    if (newCell.accessoryType == UITableViewCellAccessoryNone) { 
     newCell.accessoryType = UITableViewCellAccessoryCheckmark; 
    }else { 
     newCell.accessoryType = UITableViewCellAccessoryNone; 
    } 


} 

inoltre è necessario rimuovere l'accessorio segno di spunta sulla cellForRowAtIndexPath

if ([selectedOptionsArray indexOfObject:cell.textLabel.text] != NSNotFound) { 
    cell.accessoryType = UITableViewCellAccessoryCheckmark; 
}else{ 
    cell.accessoryType = UITableViewCellAccessoryNone; 
} 

Answer 3

Dichiarare una variabile int chiamata prev e implementare questo metodo: -

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 

UITableViewCell *cell =[tableView cellForRowAtIndexPath:indexPath]; 

    if (cell.accessoryType==UITableViewCellAccessoryNone) 
    { 
     cell.accessoryType=UITableViewCellAccessoryCheckmark; 
     if (prev!=indexPath.row) { 
     cell=[tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:prev inSection:0]]; 
     cell.accessoryType=UITableViewCellAccessoryNone; 
     prev=indexPath.row; 
    } 

} 
else{ 
    cell.accessoryType=UITableViewCellAccessoryNone; 
} 
} 

Answer 4

Un modo più breve e più semplice per implementare la logica per segno di spunta nella riga selezionata solo .....

---

1. Creare un oggetto globale di NSIndexPath ..

selectedIndexPathForCheckMark= [[NSIndexPath alloc] init]; 

2. In didSelectRowAtIndexPath ..

// assiging indexPath selezionato l'oggetto dichiarato

selectedIndexPathForCheckMark = indexPath; 
[tableView reloadData]; 

3. in cellForRowAtIndexPath ..

if ([selectedIndexPathForCheckMark isEqual:indexPath]) { 
    [cell setAccessoryType:UITableViewCellAccessoryCheckmark]; 
}else { 
    //setAccessoryType None if not get the selected indexPath 
    [cell setAccessoryType:UITableViewCellAccessoryNone]; 
} 

Answer 5

Ecco come lo faccio con celle statiche, e bypassando cellForRow

Creare una var che memorizza la posizione del "controllato" cella.

NSInteger _checkedCell; 

Poi basta implementare willDisplayCell e didSelectRow metodi come questo.

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath { 
    if (_checkedCell == indexPath.row) { 
     cell.accessoryType = UITableViewCellAccessoryCheckmark; 
    } 
    else { 
     cell.accessoryType = UITableViewCellAccessoryNone; 
    } 
} 

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 
    _checkedCell = indexPath.row; 
    [self.tableView reloadData]; 
} 

Answer 6

ho conosciuto questa domanda è abbastanza vecchio, ma qui è la versione Swift in base alla risposta del Blackberry (che ho votato per la via)

import UIKit 
 

 
class PlacesViewController: UITableViewController, UITableViewDelegate, UITableViewDataSource { 
 

 
    var placesArray = NSMutableArray() 
 
    
 
    var previousCheckedIndex = 0 
 
    
 
    override func viewDidLoad() { 
 
     super.viewDidLoad() 
 

 
     self.placesArray.addObject("Tandil") 
 
     self.placesArray.addObject("Balcarce") 
 
     self.placesArray.addObject("Mar del Plata") 
 
     
 
     self.tableView.rowHeight = UITableViewAutomaticDimension 
 
    } 
 

 
    
 
    
 
    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int { 
 
     return self.placesArray.count 
 
    } 
 
    
 
    
 
    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { 
 
     
 
     var cell: UITableViewCell = self.tableView.dequeueReusableCellWithIdentifier("cell") as UITableViewCell 
 

 
     cell.textLabel?.text = self.placesArray.objectAtIndex(indexPath.row) as? String 
 
     
 

 
     return cell 
 
    } 
 
    
 
    
 
    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { 
 

 
     if (indexPath.row != previousCheckedIndex) { 
 
      var cell: UITableViewCell = self.tableView.cellForRowAtIndexPath(indexPath)! 
 
      if (cell.accessoryType == UITableViewCellAccessoryType.None) { 
 
       cell.accessoryType = UITableViewCellAccessoryType.Checkmark 
 
       if (previousCheckedIndex != indexPath.row) { 
 
        cell = tableView.cellForRowAtIndexPath(NSIndexPath(forRow: previousCheckedIndex, inSection: 0))! 
 
        cell.accessoryType = UITableViewCellAccessoryType.None 
 
        previousCheckedIndex = indexPath.row 
 
       } 
 
      } else { 
 
       cell.accessoryType = UITableViewCellAccessoryType.None 
 
      } 
 
     
 
      tableView.reloadData() 
 
     } 
 
    } 
 
}

Answer 7

In Swift 2.0 con accessorio personalizzatoVisualizza uitableviewcell con swift

1º Creazione di Globar var IndexPa esimo

var indexSelected = NSIndexPath() 

2º In didSelectRowAtIndexPath

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { 
     indexSelected = indexPath 
     TB_Lojas.reloadData() 
    } 

3a nella cellForRowAtIndexPath:

if SelectedIndexPath == indexPath { 
       let img = UIImageView(frame: CGRect(x: 0, y: 0, width: 20, height: 20)) 
       img.image = UIImage(named: "check") 
       cell.accessoryView = img 
      }else{ 
       let img = UIImageView(frame: CGRect(x: 0, y: 0, width: 20, height: 20)) 
       img.image = UIImage(named: "uncheck") 
       cell.accessoryView = img 
      } 
} 

Answer 8

si Considerando vuole solo per mantenere una singola selezione, e se si dispone di un personalizzato UITableViewCell, vorrei raccomandare quanto segue.

Nella tua UITableViewController

override func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) { 
    //... 
    let data = dataArray[indexPath.row] 
    if data.isSelected { 
     tableView.selectRowAtIndexPath(indexPath, animated: false, scrollPosition: .None) 
    } 
    //... 

    return cell 
} 

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { 
    let data = dataArray[indexPath.row] 
    data.isSelected = true 
    let cell = tableView.cellForRowAtIndexPath(indexPath) 
    cell?.setSelected(true, animated: true) 
} 

override func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) { 
    let data = dataArray[indexPath.row] 
    data.isSelected = false 
    let cell = tableView.cellForRowAtIndexPath(indexPath) 
    cell?.setSelected(false, animated: true) 
} 

Nel personalizzato UITableViewCell

override func setSelected(selected: Bool, animated: Bool) { 
    super.setSelected(selected, animated: animated) 

    // Configure the view for the selected state 
    self.accessoryType = .None 
    if selected { 
     self.accessoryType = .Checkmark 
    } 
} 

Finché allowsMultipleSelection non è abilitato, si gestirà automaticamente deselezionando altre cellule quando si seleziona una nuova. Se allowMultipleSelection è abilitato, funzionerà anche, tranne che dovrai semplicemente toccare di nuovo per deselezionare.

Answer 9

Risposta di BlackBerry in Swift 3. UITableView con celle standard, selezionando 0 o 1 celle.

private var previousSelection = NSIndexPath() 

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { 
    tableView.deselectRow(at: indexPath, animated: true) 
    let cell = tableView.cellForRow(at: indexPath)! 
    if cell.accessoryType == .none { 
     cell.accessoryType = .checkmark 
     selection = indexPath 

     if previousSelection == IndexPath() { 
      previousSelection = indexPath 
     } else if previousSelection != indexPath { 
      let previousCell = tableView.cellForRow(at: previousSelection) 
      previousCell?.accessoryType = .none 
      previousSelection = indexPath 
     } 
    } else if cell.accessoryType == .checkmark { 
     cell.accessoryType = .none 
     selection = IndexPath() 
    } 

}