Tableview圖像在選擇iOS的Tableview時沒有改變

Question

我的需求是管理tableview的行select，Select All和Delete.deleting行是正確的。但是當我選擇行時圖像沒有改變。請給我解決方案，做我做犯錯誤加入我的代碼

ViewController.h

@interface ViewController : UIViewController<UITableViewDelegate> 
{ 
    NSMutableArray *tableData; 
    NSMutableSet *selectedRows; 
    UIToolbar *actionToolbar; 
    UIImageView *imgView; 
    BOOL selected; 
    UIBarButtonItem *actionButton,*selectAllButton,*deleteButton; 
} 
@property(nonatomic,retain)NSMutableSet *selectedRows; 
@property(nonatomic,retain)IBOutlet UITableView *tableView; 
- (BOOL)selected; 
-(void)handleLongPress:(UILongPressGestureRecognizer *)gestureRecognizer; 
- (NSIndexPath *)indexPathForCellController:(id)cellController; 

ViewController.m

#import "ViewController.h" 
#import "MultiSelectTableViewCell.h" 
@interface ViewController() 

@end 
const NSInteger SELECTION_INDICATOR_TAG = 54321; 
const NSInteger TEXT_LABEL_TAG = 54322; 
@implementation ViewController 
@synthesize tableView,selectedRows; 


- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    tableData=[[NSMutableArray alloc]init]; 
    [tableData addObject:@"Row1"]; 
    [tableData addObject:@"Row2"]; 
    [tableData addObject:@"Row3"]; 
    [tableData addObject:@"Row4"]; 
    [tableData addObject:@"Row5"]; 
    [tableData addObject:@"Row6"]; 
    [tableData addObject:@"Row7"]; 
    [tableData addObject:@"Row8"]; 
    [tableData addObject:@"Row9"]; 
    [tableData addObject:@"Row10"]; 


    selectedRows=[[NSMutableSet alloc]init]; 
    actionToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 416, 320, 44)]; 
    actionButton = 
    [[UIBarButtonItem alloc] 
     initWithTitle:@"Submit" 
     style:UIBarButtonItemStyleBordered 
     target:self 
     action:@selector(noAction:)]; 

    NSMutableArray *buttons = [[NSMutableArray alloc ]initWithCapacity:2]; 

    selectAllButton=[[UIBarButtonItem alloc]initWithTitle:@"Select All" style:UIBarButtonItemStyleBordered target:self action:@selector(selectAllrows:)]; 

    deleteButton=[[UIBarButtonItem alloc]initWithTitle:@"Delete" style:UIBarButtonItemStyleBordered target:self action:@selector(deleterows:)]; 

    [self.tableView setAllowsSelectionDuringEditing:YES]; 

    self.tableView.allowsMultipleSelection = YES; 

    selected=NO; 

    [buttons addObject:actionButton]; 
    [buttons addObject:selectAllButton]; 
    [buttons addObject:deleteButton]; 


    [actionToolbar setItems:buttons]; 

    [self.view addSubview:actionToolbar]; 

    UILongPressGestureRecognizer *lpgr = [[UILongPressGestureRecognizer alloc] 
              initWithTarget:self action:@selector(handleLongPress:)]; 
    lpgr.minimumPressDuration = 2.0; //seconds 
    lpgr.delegate = self; 
    [self.tableView addGestureRecognizer:lpgr]; 
    // Do any additional setup after loading the view, typically from a nib. 
} 
-(void)handleLongPress:(UILongPressGestureRecognizer *)gestureRecognizer 
{ 
    CGPoint p = [gestureRecognizer locationInView:self.tableView]; 

    NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:p]; 
    if (indexPath == nil) 
     NSLog(@"long press on table view but not on a row"); 
    else 
     NSLog(@"long press on table view at row %d", indexPath.row);} 
- (void)noAction:(id)sender 
{ 

} 
- (void)deleterows:(id)sender 
{ 
// [self.tableView deleteRowsAtIndexPaths:arrayOfIndexPathsToDelete withRowAnimation:UITableViewRowAnimationTop]; 
    NSLog(@"select rows are::%@ %d",selectedRows,[selectedRows count]); 

    NSArray *array=[selectedRows allObjects]; 
    NSLog(@"indexes are::%@",array); 

    for (int i=0; i<[array count]; i++) { 
     NSLog(@"------%@",[array objectAtIndex:i]); 

     NSIndexPath *myIP = [NSIndexPath indexPathForRow:[[array objectAtIndex:i] intValue] inSection:0] ; 
     [self tableView:self.tableView commitEditingStyle:UITableViewCellEditingStyleDelete forRowAtIndexPath:myIP]; 

    } 


// [self.tableView deleteRowsAtIndexPaths:array withRowAnimation:UITableViewRowAnimationTop]; 

} 
- (void)tableView:(UITableView *)tableview commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { 
    if(editingStyle == UITableViewCellEditingStyleDelete) { 
     //Delete the object from the friends array and the table. 
     [tableData removeObjectAtIndex:indexPath.row]; 
     NSLog(@"------%@",[indexPath description]); 
     [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; 
    } 
} 
- (void)selectAllrows:(id)sender 
{ 

} 
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
    return 1; 
} 
-(void)viewDidAppear:(BOOL)animated 

{ 
    [self.tableView setEditing:YES]; 
} 
// Customize the number of rows in the table view. 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 
    return [tableData count]; 
} 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *cellIdentifier = @"MultiSelectCellController"; 
    UITableViewCell *cell = 
    [self.tableView dequeueReusableCellWithIdentifier:cellIdentifier]; 
    UIImageView *indicator; 
    UILabel *textLabel; 
    if (!cell) 
    { 
     cell = 
     [[MultiSelectTableViewCell alloc] 
      initWithFrame:CGRectMake(0, 0, 320,self.tableView.rowHeight) 
      reuseIdentifier:cellIdentifier]; 


     indicator = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"NotSelected.png"]]; 

     const NSInteger IMAGE_SIZE = 30; 
     const NSInteger SIDE_PADDING = 5; 

     indicator.tag = SELECTION_INDICATOR_TAG; 
     indicator.frame = 
     CGRectMake(-EDITING_HORIZONTAL_OFFSET + SIDE_PADDING, (0.5 *self.tableView.rowHeight) - (0.5 * IMAGE_SIZE), IMAGE_SIZE, IMAGE_SIZE); 
     [cell.contentView addSubview:indicator]; 

     textLabel = [[UILabel alloc] initWithFrame:CGRectMake(SIDE_PADDING, 0, 320, self.tableView.rowHeight)]; 
     textLabel.tag = TEXT_LABEL_TAG; 
     textLabel.textColor = [UIColor blackColor]; 
     textLabel.backgroundColor = [UIColor clearColor]; 
     textLabel.font = [UIFont boldSystemFontOfSize:[UIFont labelFontSize]]; 
     [cell.contentView addSubview:textLabel]; 

     cell.selectionStyle = UITableViewCellSelectionStyleNone; 
     cell.backgroundView = [[UIView alloc] init]; 
    } 
    else 
    { 
     indicator = (UIImageView *)[cell.contentView viewWithTag:SELECTION_INDICATOR_TAG]; 
     textLabel = (UILabel *)[cell.contentView viewWithTag:TEXT_LABEL_TAG]; 
    } 

    textLabel.text = [tableData objectAtIndex:[indexPath row]]; 



    if (selected) 
    { 
     indicator.image = [UIImage imageNamed:@"IsSelected.png"]; 
     cell.backgroundView.backgroundColor = [UIColor colorWithRed:223.0/255.0 green:230.0/255.0 blue:250.0/255.0 alpha:1.0]; 
    } 
    else 
    { 
     indicator.image = [UIImage imageNamed:@"NotSelected.png"]; 
     cell.backgroundView.backgroundColor = [UIColor whiteColor]; 
    } 

    return cell; 
} 

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    return 45; 
} 
- (BOOL)selected 
{ 
    return selected; 
} 

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if (self.tableView.isEditing) 
    { 
     //selected = !selected; 

     selected=[self selected]; 

     NSNumber *rowNsNum = [NSNumber numberWithUnsignedInt:indexPath.row]; 
     if ([self.selectedRows containsObject:rowNsNum]) 
      [self.selectedRows removeObject:rowNsNum]; 
     else 
     { 
      [self.selectedRows addObject:rowNsNum]; 
      NSLog(@"index is:::%@",rowNsNum); 
     } 

     [self.tableView performSelector:@selector(reloadData) withObject:nil afterDelay:0.2]; 

     UITableViewCell *cell =[self.tableView cellForRowAtIndexPath:[self indexPathForCellController:[tableData objectAtIndex:[indexPath row]]]]; 
// [tableView cellForRowAtIndexPath: 
//  [(RootViewController *)tableView.delegate 
//  indexPathForCellController:self]]; 

    UIImageView *indicator = (UIImageView *)[cell.contentView viewWithTag:SELECTION_INDICATOR_TAG]; 
    if (selected) 
    { 

     indicator.image = [UIImage imageNamed:@"IsSelected.png"]; 
     cell.backgroundView.backgroundColor = [UIColor colorWithRed:223.0/255.0 green:230.0/255.0 blue:250.0/255.0 alpha:1.0]; 
     selected = !selected; 
    } 
    else 
    { 
     indicator.image = [UIImage imageNamed:@"NotSelected.png"]; 
     cell.backgroundView.backgroundColor = [UIColor whiteColor]; 
    } 
    } 


// 
// cell.imageView.image = imgView.image; 
} 

- (NSIndexPath *)indexPathForCellController:(id)cellController 
{ 


    NSLog(@"cell controller is;::%@",cellController); 
    NSInteger sectionIndex; 
// NSInteger sectionCount = [tableData count]; 
    for (sectionIndex = 0; sectionIndex < 1; sectionIndex++) 
    { 
     NSArray *section = tableData; 
     NSInteger rowIndex; 
     NSLog(@"section count is:::%d",[section count]); 
     NSInteger rowCount = [section count]; 
     for (rowIndex = 0; rowIndex < rowCount; rowIndex++) 
     { 
      NSArray *row = [section objectAtIndex:rowIndex]; 
      NSLog(@"row is:::%@",row); 
      if ([row isEqual:cellController]) 
      { 
       selected=YES; 
       NSLog(@"row index is::%d",rowIndex); 
       return [NSIndexPath indexPathForRow:rowIndex inSection:sectionIndex]; 
      } 
     } 
    } 

    return nil; 
} 

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

@end 

MultiSelectTableViewCell.h

#import <UIKit/UIKit.h> 

@interface MultiSelectTableViewCell : UITableViewCell 
{ 

} 

@end 

extern const NSInteger EDITING_HORIZONTAL_OFFSET; 

MultiSelectTableViewCell.m

#import "MultiSelectTableViewCell.h" 

const NSInteger EDITING_HORIZONTAL_OFFSET = 30; 

@implementation MultiSelectTableViewCell 

// 
// setEditing:animated: 
// 
// Refreshed the layout when editing is enabled/disabled. 
// 
- (void)setEditing:(BOOL)editing animated:(BOOL)animated 
{ 
    [self setNeedsLayout]; 
} 

// 
// layoutSubviews 
// 
// When editing, displace everything rightwards to allow space for the 
// selection indicator. 
// 
- (void)layoutSubviews 
{ 
    [UIView beginAnimations:nil context:nil]; 
    [UIView setAnimationBeginsFromCurrentState:YES]; 

    [super layoutSubviews]; 

    if (((UITableView *)self.superview).isEditing) 
    { 
     CGRect contentFrame = self.contentView.frame; 
     contentFrame.origin.x = 30; 
     self.contentView.frame = contentFrame; 
    } 
    else 
    { 
     CGRect contentFrame = self.contentView.frame; 
     contentFrame.origin.x = 30; 
     self.contentView.frame = contentFrame; 
    } 

    [UIView commitAnimations]; 
} 

@end 

Answer 1

ü沒有處理適當選擇標籤BOOL。試試這個在didselect委託方法..

 UIImageView *indicator = (UIImageView *)[cell.contentView viewWithTag:SELECTION_INDICATOR_TAG]; 
     if (selected) 
     { 

      indicator.image = [UIImage imageNamed:@"NotSelected.png"]; 
      cell.backgroundView.backgroundColor = [UIColor colorWithRed:223.0/255.0 green:230.0/255.0 blue:250.0/255.0 alpha:1.0]; 

     } 
     else 
     { 
      indicator.image = [UIImage imageNamed:@"Selected.png"]; 
      cell.backgroundView.backgroundColor = [UIColor whiteColor]; 

     } 
selected = !selected; 
     } 

Answer 2

如果你想完全按照自己的圖像例子說明，我假設你想在那邊V檢查。
單元格已具有「選定」屬性，您不必使用BOOLEAN處理它。所有你需要做的是選擇一排的方法：

[tableView selectRowAtIndexPath:<#(NSIndexPath *)#> animated:<#(BOOL)#> scrollPosition:<#(UITableViewScrollPosition)#>] 

[tableView deselectRowAtIndexPath:<#(NSIndexPath *)#> animated:<#(BOOL)#>] 

然後更改委託方法圖像

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    UITableViewCell *cell = (UITableViewCell *)[tableView cellForRowAtIndexPath:indexPath]; 
    cell.imageView.image = [UIImage imageNamed:@"selected_cell_image"]; 
} 

- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    UITableViewCell *cell = (UITableViewCell *)[tableView cellForRowAtIndexPath:indexPath]; 
    cell.imageView.image = [UIImage imageNamed:@"deselected_cell_image"]; 
}