附件复选标记,在uitableview-iphone中一次一个

Question

HI,如何在uitableview中一次实现一个checkmark,然后如何在我的应用程序中保存该状态？请指导.现在我有一个表,表行中的数据来自nsmutablearray.My .m文件如下:

#import "LocationSelection.h"

@implementation LocationSelection  
@synthesize menuList, table;  

- (void)viewDidLoad {  
    menuList=[[NSMutableArray alloc] initWithObjects:
              [NSArray arrayWithObjects:@"LOCATION1",nil],  
              [NSArray arrayWithObjects:@"LOCATION2",nil],   
              [NSArray arrayWithObjects:@"LOCATION3",nil],  
              [NSArray arrayWithObjects:@"LOCATION4",nil],  
              [NSArray arrayWithObjects:@"LOCATION5",nil],  
              [NSArray arrayWithObjects:@"LOCATION6",nil],  
              [NSArray arrayWithObjects:@"LOCATION7",nil],  
              nil];  

    [self.navigationController setNavigationBarHidden:NO];      
    self.navigationController.navigationBar.tintColor=[UIColor blackColor];     
    self.navigationController.navigationBar.barStyle=UIBarStyleBlackTranslucent;        
    self.title=@"Location Selection";           
    [table reloadData];    
    [super viewDidLoad];    
}  
- (NSInteger)numberOfSectionsInTableView:(UITableView *)theTableView{  
    return 1;  
}  

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{  
    return 40;  
}  

- (NSInteger)tableView:(UITableView *)theTableView numberOfRowsInSection:(NSInteger)section{
    return menuList.count;
}

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

    UITableViewCell *cell = [table dequeueReusableCellWithIdentifier:CellIdentifier];  
    if(cell == nil){
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero] autorelease];  
    }
    cell.highlighted=NO;  
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;  

    NSArray *rowArray = [menuList objectAtIndex:indexPath.row];  
    UILabel *nameLabel = [[[UILabel alloc] initWithFrame:CGRectMake(15, 8, 200, 20)]autorelease];    
    nameLabel.text = [NSString stringWithFormat:@"%@",[rowArray objectAtIndex:0]];  
    nameLabel.backgroundColor = [UIColor clearColor];  
    nameLabel.shadowColor=[UIColor whiteColor];  
    nameLabel.shadowOffset=CGSizeMake(0.0, 0.5);  
    nameLabel.textColor = RGB(0,0,0);
    [nameLabel setFont:[UIFont boldSystemFontOfSize:16.0f]];  
    [cell.contentView addSubview:nameLabel];    
    return cell;  

}  

谢谢!

Answer 1

在cellForRowAtIndexPath中注释这一行 - > cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
使用这个:

NSIndexPath* lastIndexPath; // This as an ivar

  - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
    {
        UITableViewCell* newCell = [tableView cellForRowAtIndexPath:indexPath]; 
        int newRow = [indexPath row]; 
        int oldRow = (lastIndexPath != nil) ? [lastIndexPath row] : -1; 

        if(newRow != oldRow) 
        { 
            newCell.accessoryType = UITableViewCellAccessoryCheckmark; 
            UITableViewCell* oldCell = [tableView cellForRowAtIndexPath:lastIndexPath]; 
            oldCell.accessoryType = UITableViewCellAccessoryNone;
            lastIndexPath = indexPath; 
        } 
    }