Ios 如何在更新objective c中UITableView中以前选定的行时显示带有复选标记的选定行

我试过这样…在CellforRowatinex（）中

并在DidSelectRowatineXpath中添加以下代码行

 UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
[tableView deselectRowAtIndexPath:indexPath animated:YES];

---

但是，在更新以前选择的值时，复选标记不会显示在以前选择的行上。。任何人都可以在此问题上提供帮助。。提前感谢。）

我想这就是你需要做的。在

cellforrowatinexpath

方法中，而不是指定

cell.selectionStyle=UITableViewCellSelectionStyleNone对于所有单元格，仅对于未选择的单元格将其指定为“无”

更改
didSelectRowAtIndexPath
方法以将所选单元格详细信息存储到数组中

UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
[self.selectedCellArray addObject:[hardDependencyAlldataArray objectAtIndex:indexPath.row]];
[tableView deselectRowAtIndexPath:indexPath animated:YES];

现在像这样更改
cellforrowatinexpath
方法

- (UITableViewCell *)tableView:(UITableView *)tableView    cellForRowAtIndexPath:(NSIndexPath *)indexPath
  {
       static NSString *SimpleTableViewIdentifier=@"SimpleTableViewIdentifier";

      UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:SimpleTableViewIdentifier];

      if (cell == nil)
      {
         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:SimpleTableViewIdentifier];
      }
      cell.textLabel.text=[hardDependencyAlldataArray objectAtIndex:indexPath.row];

      if (![self.selectedCellArray containsObject:[hardDependencyAlldataArray objectAtIndex:indexPath.row]])
      {
          cell.selectionStyle = UITableViewCellSelectionStyleNone;
      }
      else
      {
          cell.accessoryType = UITableViewCellAccessoryCheckmark;
      }
      return  cell;
}

我知道了，塔米姆。检查下面的答案。我尝试了示例项目。它工作正常

#import "ViewController.h"

@interface ViewController ()
{
  NSMutableArray *arrProductSelection,*arrProductSelectDeSelectCheckMark;
  NSArray *arrayFetchFromDefaults;
  NSInteger lastSelectedIndex;
}

@end

@implementation ViewController

@synthesize tableViewCheckMarkSelectionUpdate;

- (void)viewDidLoad 
{
  [super viewDidLoad];
  // Do any additional setup after loading the view from its nib.
  arrProductSelection = [[NSMutableArray alloc]initWithObjects:@"iPhone",@"iPad",@"iPod",@"iTV",@"iWatch",@"iMac",nil];
}

- (void)didReceiveMemoryWarning {
 [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
}

-(void)viewWillAppear:(BOOL)animated
{
   [NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
   arrayFetchFromDefaults = [userDefaults objectForKey:@"selectedcheckmark"];
   arrProductSelectDeSelectCheckMark = [[NSMutableArray alloc]initWithArray:arrayFetchFromDefaults];
   if(arrProductSelectDeSelectCheckMark.count == 0)
   {
      arrProductSelectDeSelectCheckMark = [[NSMutableArray alloc]init];
      for(int j=0;j<[arrProductSelection count];j++)
      {
        [arrProductSelectDeSelectCheckMark addObject:@"deselected"];
      }
   }
   [tableViewCheckMarkSelectionUpdate reloadData];

}


#pragma mark - UITableViewDataSource Methods
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
  return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  return arrProductSelection.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
   NSString *strCell = @"cell";
   UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:strCell];
   if(cell==nil)
   {
     cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:strCell];
   }

   // lastSelectedIndex =  [[NSUserDefaults standardUserDefaults] integerForKey:@"selectedRow"]; - Getting Last selected index row

   if([[arrProductSelectDeSelectCheckMark objectAtIndex:indexPath.row] isEqualToString:@"deselected"])
     cell.accessoryType = UITableViewCellAccessoryNone;

   else
     cell.accessoryType = UITableViewCellAccessoryCheckmark;

   //    if (indexPath.row == lastSelectedIndex)
   //        cell.accessoryType = UITableViewCellAccessoryCheckmark;

   cell.textLabel.text = [arrProductSelection objectAtIndex:indexPath.row];
   return cell;
 }


#pragma mark - UITableViewDelegate Methods
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
   // [[NSUserDefaults standardUserDefaults] setInteger:indexPath.row forKey:@"selectedRow"];  //This is for Last Selected IndexPath Row

   UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
   @try
   {
     CGPoint touchPoint = [cell convertPoint:CGPointZero toView:tableViewCheckMarkSelectionUpdate];
     NSIndexPath *indexPath = [tableViewCheckMarkSelectionUpdate indexPathForRowAtPoint:touchPoint];
     NSLog(@"%@",arrProductSelectDeSelectCheckMark);
     if([arrProductSelectDeSelectCheckMark count]==0)
     {
        for(int i=0; i<[arrProductSelection count]; i++)
        {
            [arrProductSelectDeSelectCheckMark addObject:@"deselected"];
        }
     }
     if([[arrProductSelectDeSelectCheckMark objectAtIndex:indexPath.row] isEqualToString:@"deselected"])
     {
        cell.accessoryType = UITableViewCellAccessoryCheckmark;
        [arrProductSelectDeSelectCheckMark replaceObjectAtIndex:indexPath.row withObject:@"selected"];
     }
     else
     {
        cell.accessoryType = UITableViewCellAccessoryNone;
        [arrProductSelectDeSelectCheckMark replaceObjectAtIndex:indexPath.row withObject:@"deselected"];
     }

     NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
     [defaults setObject:arrProductSelectDeSelectCheckMark forKey:@"selectedcheckmark"];
     [defaults synchronize];
  }
  @catch (NSException *exception) {
    NSLog(@"The exception is-%@",exception);
  }
}

- (IBAction)actionGoPrevious:(id)sender
{
   [self.navigationController popToRootViewControllerAnimated:YES];
}
@end

#导入“ViewController.h”
@界面视图控制器（）
{
NSMutableArray*arrProductSelection，*arrProductSelectDecelectCheckmark；
NSArray*阵列默认设置；
NSInteger最后选择的索引；
}
@结束
@实现视图控制器
@综合tableViewCheckMarkSelectionUpdate；
-（无效）viewDidLoad
{
[超级视图下载]；
//从nib加载视图后，执行任何其他设置。
arrProductSelection=[[NSMutableArray alloc]initWithObjects:@“iPhone”@“iPad”@“iPod”@“iTV”@“iWatch”@“iMac”，nil]；
}
-（无效）未收到记忆警告{
[超级记忆警告]；
//处置所有可以重新创建的资源。
}
-（无效）视图将显示：（BOOL）动画
{
[NSUserDefaults*userDefaults=[NSUserDefaults standardUserDefaults]；
arrayFetchFromDefaults=[userDefaults objectForKey:@“selectedcheckmark”]；
ArrProductSelectDeceCheckMark=[[NSMutableArray alloc]initWithArray:ArrayFetchFromDefault]；
如果（arrProductSelectDecelectCheckMark.count==0）
{
ArrProductSelectDecleCheckmark=[[NSMutableArray alloc]init]；
对于（int j=0；j“更新先前选择的值”是什么意思？对于u r响应：）…以前我从表视图中选择了行…在选择“在选定行上显示复选标记”时…现在我想在进行更新之前在以前选择的行上显示一个复选标记…您是否刷新了中间的表视图？您的意思是重新加载表视图？…我关心的是，我想用复选标记跟踪lastSelectedRows用于在填充表视图数据时识别lastSelectedIndexed值…thq先生：…..但我仍然没有得到以前在编辑模式下带有复选标记的选定行…抱歉，我错过了一个位代码。请现在用新的更新检查我的答案您所做的错误是重新加载表视图，这将重置选择所有单元格的le返回到none。我们现在做的是保存已选中单元格的状态，并将其更新为cellForRowAtIndexPath方法中的selected。以前发布的代码对我有效。但是我应该如何取消选择以前选择的值…我已经完成了所有操作。兄弟，检查我的代码一次。你得到了所有内容。我实现了Select，取消选择并保存最后选择的行，并检查条件最后选择的行索引是否等于indexath.row。在我的编码兄弟中所做的一切。检查并告诉我。比较两个答案。勾选最佳有用的答案。它应该满足您的所有要求。选择，取消选择，选择索引行，以便我们回来时显示。E一切都应该正常。hi varun..GM..yester代码很好..但它只显示最后一个索引值…但我想用复选标记显示多个值。。
#import "ViewController.h"

@interface ViewController ()
{
  NSMutableArray *arrProductSelection,*arrProductSelectDeSelectCheckMark;
  NSArray *arrayFetchFromDefaults;
  NSInteger lastSelectedIndex;
}

@end

@implementation ViewController

@synthesize tableViewCheckMarkSelectionUpdate;

- (void)viewDidLoad 
{
  [super viewDidLoad];
  // Do any additional setup after loading the view from its nib.
  arrProductSelection = [[NSMutableArray alloc]initWithObjects:@"iPhone",@"iPad",@"iPod",@"iTV",@"iWatch",@"iMac",nil];
}

- (void)didReceiveMemoryWarning {
 [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
}

-(void)viewWillAppear:(BOOL)animated
{
   [NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
   arrayFetchFromDefaults = [userDefaults objectForKey:@"selectedcheckmark"];
   arrProductSelectDeSelectCheckMark = [[NSMutableArray alloc]initWithArray:arrayFetchFromDefaults];
   if(arrProductSelectDeSelectCheckMark.count == 0)
   {
      arrProductSelectDeSelectCheckMark = [[NSMutableArray alloc]init];
      for(int j=0;j<[arrProductSelection count];j++)
      {
        [arrProductSelectDeSelectCheckMark addObject:@"deselected"];
      }
   }
   [tableViewCheckMarkSelectionUpdate reloadData];

}


#pragma mark - UITableViewDataSource Methods
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
  return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  return arrProductSelection.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
   NSString *strCell = @"cell";
   UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:strCell];
   if(cell==nil)
   {
     cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:strCell];
   }

   // lastSelectedIndex =  [[NSUserDefaults standardUserDefaults] integerForKey:@"selectedRow"]; - Getting Last selected index row

   if([[arrProductSelectDeSelectCheckMark objectAtIndex:indexPath.row] isEqualToString:@"deselected"])
     cell.accessoryType = UITableViewCellAccessoryNone;

   else
     cell.accessoryType = UITableViewCellAccessoryCheckmark;

   //    if (indexPath.row == lastSelectedIndex)
   //        cell.accessoryType = UITableViewCellAccessoryCheckmark;

   cell.textLabel.text = [arrProductSelection objectAtIndex:indexPath.row];
   return cell;
 }


#pragma mark - UITableViewDelegate Methods
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
   // [[NSUserDefaults standardUserDefaults] setInteger:indexPath.row forKey:@"selectedRow"];  //This is for Last Selected IndexPath Row

   UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
   @try
   {
     CGPoint touchPoint = [cell convertPoint:CGPointZero toView:tableViewCheckMarkSelectionUpdate];
     NSIndexPath *indexPath = [tableViewCheckMarkSelectionUpdate indexPathForRowAtPoint:touchPoint];
     NSLog(@"%@",arrProductSelectDeSelectCheckMark);
     if([arrProductSelectDeSelectCheckMark count]==0)
     {
        for(int i=0; i<[arrProductSelection count]; i++)
        {
            [arrProductSelectDeSelectCheckMark addObject:@"deselected"];
        }
     }
     if([[arrProductSelectDeSelectCheckMark objectAtIndex:indexPath.row] isEqualToString:@"deselected"])
     {
        cell.accessoryType = UITableViewCellAccessoryCheckmark;
        [arrProductSelectDeSelectCheckMark replaceObjectAtIndex:indexPath.row withObject:@"selected"];
     }
     else
     {
        cell.accessoryType = UITableViewCellAccessoryNone;
        [arrProductSelectDeSelectCheckMark replaceObjectAtIndex:indexPath.row withObject:@"deselected"];
     }

     NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
     [defaults setObject:arrProductSelectDeSelectCheckMark forKey:@"selectedcheckmark"];
     [defaults synchronize];
  }
  @catch (NSException *exception) {
    NSLog(@"The exception is-%@",exception);
  }
}

- (IBAction)actionGoPrevious:(id)sender
{
   [self.navigationController popToRootViewControllerAnimated:YES];
}
@end