iphone - 展开和折叠 UITableview

Question

我使用下面的代码进行 uitableview 展开和折叠。它工作正常。但是，当我选择任何部分时，它会展开但不会折叠之前展开的部分。

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if ([self tableView:tableView canCollapseSection:indexPath.section])
    {
    if (!indexPath.row)
    {
        // only first row toggles exapand/collapse
        [tableView deselectRowAtIndexPath:indexPath animated:YES];
         NSInteger section = indexPath.section;
         BOOL currentlyExpanded = [expandedSections containsIndex:section];
        NSInteger rows;
        NSMutableArray *tmpArray = [NSMutableArray array];
    if (currentlyExpanded)
        {
            rows = [self tableView:tableView numberOfRowsInSection:section];
            NSLog(@"expanded");
            [expandedSections removeIndex:section];
            screenTypeReloadCheck = NO;
        }
        else
        {
            screenTypeReloadCheck =YES;
            [expandedSections addIndex:section];
            rows = [self tableView:tableView numberOfRowsInSection:section];

        }
        for (int i=1; i<rows; i++)
        {
            NSIndexPath *tmpIndexPath = [NSIndexPath indexPathForRow:i
                                                           inSection:section];
            [tmpArray addObject:tmpIndexPath];
        }

        UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];

        if (currentlyExpanded)
        {
            [tableView deleteRowsAtIndexPaths:tmpArray
                             withRowAnimation:UITableViewRowAnimationTop];

            UIImageView *imView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"UITableExpand"]];
            cell.accessoryView = imView;
        }
        else
        {
            [tableView insertRowsAtIndexPaths:tmpArray
                             withRowAnimation:UITableViewRowAnimationTop];

            UIImageView *imView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"UITableContract"]];
            cell.accessoryView = imView;
        }
    }
}

}

谢谢

Answer 1

我在我的应用程序中做了同样的事情..这是解决方案..

在你的.h

#import "sampleCustomCell.h"

@interface second : UIViewController <UITableViewDelegate,UITableViewDataSource>
{
   NSMutableDictionary *selectedIndexes;
   sampleCustomCell *samplCustom;
   UITableView *tblTempData;
   NSMutableArray *yourAry;
}

@property(nonatomic,retain) sampleCustomCell *samplCustom;
@property (nonatomic,retain) NSMutableArray *yourAry;
@property (nonatomic,retain) IBOutlet UITableView *tblTempData;

@end

在你的.m

@synthesize samplCustom;
@synthesize tblTempData;

BOOL isSelected;

int kCellHieght=0;

- (void)viewDidLoad
{
   [super viewDidLoad];
   yourAry = [[NSMutableArray alloc] initWithObjects:@"1_id",@"2_id",@"3_id",@"4_id",@"5_id",@"6_id",@"7_id",@"8_id",@"9_id",@"10_id", nil];
   selectedIndexes = [[NSMutableDictionary alloc] init];
}


#pragma mark TableView with Expand and collapse


- (BOOL)cellIsSelected:(NSIndexPath *)indexPath {
    // Return whether the cell at the specified index path is selected or not
    NSLog(@"%@", selectedIndexes);
    NSNumber *selectedIndex = [selectedIndexes objectForKey:indexPath];
    NSLog(@"%@", selectedIndex);
    return selectedIndex == nil ? FALSE : [selectedIndex boolValue];
 }


-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    if([self cellIsSelected:indexPath])
    {
       kCellHieght = 200; //Expanded height for your customCell xib.
    }
    else
    {
       kCellHieght = 130; // Height of your customCell xib
    }
    return kCellHieght;
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [yourAry count];
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    sampleCustomCell *cell;
    if (tableView.tag == 11)
    {
       cell = (sampleCustomCell *)[tableView dequeueReusableCellWithIdentifier:@"sampleCustomCell"];
       NSArray *nib;
       for (UIControl *subview in cell.contentView.subviews) {
          [subview removeFromSuperview];
       }
       if(cell == nil)
       {
           nib = [[NSBundle mainBundle] loadNibNamed:@"sampleCustomCell" owner:self options:nil];

           for(id oneobject in nib)
           {
              if([oneobject isKindOfClass:[sampleCustomCell class]])
              {
                  cell = (sampleCustomCell *)oneobject;
                  //[cell setIndexpath:indexPath];
                  //[cell setDelegete:self];
                  cell.lblProduct.text = [yourAry objectAtIndex:[indexPath row]];
              }
          }
       }

       if([self cellIsSelected:indexPath])
       {
          [UIView beginAnimations:nil context:nil];
          [UIView setAnimationDuration:3];
          [UIView commitAnimations];
         [self performSelector:@selector(showHidden:) withObject:cell afterDelay:0.4];
       }
    }
    return cell;
}


- (void)tableView:(UITableView *)aTableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyleforRowAtIndexPath:(NSIndexPath *)indexPath
{

}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    isSelected = ![self cellIsSelected:indexPath];
    [tableView deselectRowAtIndexPath:indexPath animated:TRUE];
    BOOL isSelected = ![self cellIsSelected:indexPath];
    NSNumber *selectedIndex = [NSNumber numberWithBool:isSelected];
    [selectedIndexes removeAllObjects];
    [self hideTV:tableView];
    [selectedIndexes setObject:selectedIndex forKey:indexPath];
    NSLog(@" array %@", selectedIndexes);
    [self.tblTempData beginUpdates];


    sampleCustomCell *selectedCell = (sampleCustomCell *)[tblTempData cellForRowAtIndexPath:indexPath];
    if([self cellIsSelected:indexPath])
    {
        samplCustom = selectedCell;
        [UIView animateWithDuration:15 delay:0.2 options:UIViewAnimationCurveLinear animations:^{NSLog(@"animating");} completion:^(BOOL finished){
            NSLog(@"Done 1!");
        }];
        [UIView commitAnimations];
    }
    else
    {
        [UIView animateWithDuration:5 delay:0.2 options:UIViewAnimationCurveLinear animations:^{NSLog(@"animating");} completion:^(BOOL finished){
            NSLog(@"Done 1!");
        }];
        [UIView commitAnimations];
    }
    [self.tblTempData endUpdates];
    [tblTempData reloadData];
}

-(void)hideTV:(UIView *) view{

    [tblTempData reloadData];

    for (id View in [view subviews]) {
       if ([View isKindOfClass:[UITextView class]]) {
           [View setHidden:YES];
       }

       if ([View isKindOfClass:[UITableViewCell class]]) {
           UITableViewCell *cell = (UITableViewCell *) View;
           [self hideTV:cell.contentView];
       }  
   }
}


-(void) showHidden : (UITableViewCell *)cell{
    for (id View in [cell subviews]) {
        if ([View isKindOfClass:[UITextView class]]) {
            if ([View tag] == 111) {
               [View setHidden:NO];
           }
       } 
   }
}

希望这有帮助..快乐编码..谢谢..