在静态的UITableViewCell动态的UITableView(dynamic UITableV

2019-07-28 22:05发布

下面的设置会造成麻烦:

在我的故事板我有一个标准表视图控制器,含有三个静态细胞作为内容的表格视图。 一个细胞包含具有动态内容并在它的原型细胞另一个表视图。 两个表视图代表和数据源被设置为相同的表视图控制器。 在委托和数据源的方法我确定哪个的tableview已经调用方法并适当地处理该响应。 然而,如果动态表视图包含一个以上的元件I得到NSRangeException[__NSArrayI objectAtIndex:]: index 1 beyond bounds [0 .. 0] 我无法追查,因为调用堆栈中有没有什么看起来面熟。 我怀疑我的数据是currupt但污染严重的寄托都与之后NSLog的消息,似乎不这样,我还是蛮丢失。

这里是我的代码:

@interface CartViewController : UITableViewController

@property (nonatomic, strong) IBOutlet UITableView* cartTableView;
@property (nonatomic, strong) IBOutlet UILabel* lblTotalPrice;
@property (nonatomic, strong) IBOutlet UITableViewCell* cellProductList;
@property (nonatomic, strong) IBOutlet UITableViewCell* cellTotalPrice;
@property (nonatomic, strong) IBOutlet UITableViewCell* cellProceedToCheckout;

@end

@implementation CartViewController

@synthesize cartTableView;
@synthesize lblTotalPrice;
@synthesize cellProductList;
@synthesize cellTotalPrice;
@synthesize cellProceedToCheckout;

// other methods ...

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];

    [[cartTableView layer] setCornerRadius:10];
    [cartTableView setTableFooterView:[[UIView alloc] initWithFrame:CGRectZero]];
    [cartTableView setClipsToBounds:YES];
}

- (void)viewWillAppear:(BOOL)animated
{
    [cartTableView reloadData];
    lblTotalPrice.text = [NSString stringWithFormat:@"%.2f €", [[DataStorage instance] shoppingCartTotalPrice]];
    [super viewWillAppear:animated];
}
#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    NSString* tableName = @"unknown";
    if(tableView == cartTableView)
        tableName = @"dynamic";
    if(tableView == self.tableView)
        tableName = @"static";

    int sections = 0;

    if (tableView == self.tableView)
        sections = 3;
    if (tableView == cartTableView)
        sections = 1;

    NSLog(@"%@ sections %d", tableName, sections);
    return sections;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    NSString* tableName = @"unknown";
    if(tableView == cartTableView)
        tableName = @"dynamic";
    if(tableView == self.tableView)
        tableName = @"static";

    int rows = 0;

    if (tableView == self.tableView && section < 3)
        rows = 1;
    if (tableView == cartTableView && section == 0)
        rows = [[DataStorage instance] shoppingCartItemCount];

    NSLog(@"%@ rows %d", tableName, rows);
    return rows;
}


- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    float height = 44;
    if (tableView == self.tableView)
    {
        if(indexPath.section == 0)
            height = UIInterfaceOrientationIsLandscape(self.interfaceOrientation)
            ? kCellProductListHeightLandscape
            : kCellProductListHeightPortrait;
    }
    else
    {
        height = kCartItemCellHeight;
    }

    return height;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell* cell = nil;

    NSString* tableName = @"unknown";
    if(tableView == cartTableView)
        tableName = @"dynamic";
    if(tableView == self.tableView)
        tableName = @"static";

    NSLog(@"%@ indexpath row %d section %d", tableName, indexPath.row, indexPath.section);

    if(tableView == cartTableView && indexPath.section == 0)
    {        
        ProductDefaultCell* cartItemCell = [tableView dequeueReusableCellWithIdentifier:kCellIdentifier];
        if (cartItemCell == nil) {
            cartItemCell = [[ProductDefaultCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kCellIdentifier];
        }

        DataStorage* dataStorage = [DataStorage instance];

        ProductEntity* product = [dataStorage productFromCartAtIndex:indexPath.row];

        // set up cell data from product ...

        cell = cartItemCell;
    }
    else
    {
        switch (indexPath.section)
        {
            case 0:
                cell = cellProductList;
                break;
            case 1:
                cell = cellTotalPrice;
                break;
            case 2:
                cell = cellProceedToCheckout;
                break;
            default:
                break;
        }
    }

    NSLog(@"%@ %@", tableName, cell == nil ? @"error" : @"ok");

    return cell;
}

#pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString* tableName = @"unknown";
    if(tableView == cartTableView)
        tableName = @"dynamic";
    if(tableView == self.tableView)
        tableName = @"static";

    NSLog(@"%@ display row %d section %d", tableName, indexPath.row, indexPath.section);
}

这里是控制台输出:

2012-04-12 09:58:51.842 MyApp[363:fb03] dynamic sections 1
2012-04-12 09:58:51.856 MyApp[363:fb03] dynamic rows 2
2012-04-12 09:58:51.857 MyApp[363:fb03] dynamic sections 1
2012-04-12 09:58:51.857 MyApp[363:fb03] dynamic rows 2
2012-04-12 09:58:51.859 MyApp[363:fb03] static sections 3
2012-04-12 09:58:51.860 MyApp[363:fb03] static sections 3
2012-04-12 09:58:51.860 MyApp[363:fb03] static rows 1
2012-04-12 09:58:51.861 MyApp[363:fb03] static rows 1
2012-04-12 09:58:51.861 MyApp[363:fb03] static rows 1
2012-04-12 09:58:51.862 MyApp[363:fb03] static indexpath row 0 section 0
2012-04-12 09:58:51.862 MyApp[363:fb03] static ok
2012-04-12 09:58:51.863 MyApp[363:fb03] dynamic sections 1
2012-04-12 09:58:51.864 MyApp[363:fb03] dynamic rows 2
2012-04-12 09:58:51.864 MyApp[363:fb03] dynamic indexpath row 0 section 0
2012-04-12 09:58:51.978 MyApp[363:fb03] dynamic ok
2012-04-12 09:58:51.981 MyApp[363:fb03] dynamic display row 0 section 0
2012-04-12 09:58:51.991 MyApp[363:fb03] dynamic indexpath row 1 section 0
2012-04-12 09:58:52.053 MyApp[363:fb03] dynamic ok
objc[363]: EXCEPTIONS: throwing 0x6b6f670 (object 0x6b6fc20, a NSException)
objc[363]: EXCEPTIONS: searching through frame [ip=0x23d8678 sp=0xbfffc1a0] for exception 0x6b6f650
objc[363]: EXCEPTIONS: searching through frame [ip=0x23e2578 sp=0xbfffc1d0] for exception 0x6b6f650
objc[363]: EXCEPTIONS: searching through frame [ip=0x23e2673 sp=0xbfffd230] for exception 0x6b6f650
objc[363]: EXCEPTIONS: searching through frame [ip=0x23d8678 sp=0xbfffd4f0] for exception 0x6b6f650
objc[363]: EXCEPTIONS: searching through frame [ip=0x23e2578 sp=0xbfffd520] for exception 0x6b6f650
objc[363]: EXCEPTIONS: terminating
objc[363]: EXCEPTIONS: searching through frame [ip=0x1a0deed sp=0xbfffb6a0] for exception 0x6b6f650
objc[363]: EXCEPTIONS: catch(id)
objc[363]: EXCEPTIONS: unwinding through frame [ip=0x1a0deed sp=0xbfffb6a0] for exception 0x6b6f650
objc[363]: EXCEPTIONS: handling exception 0x6b6f650 at 0x1a0deff
2012-04-12 09:58:52.139 MyApp[363:fb03] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndex:]: index 1 beyond bounds [0 .. 0]'
*** First throw call stack:
(0x187c022 0x1a0dcd6 0x1868644 0x8a7f88 0x6b41eb 0x51c008 0x51c3ce 0x507cbd 0x5166f1 0x4bfd42 0x187de42 0x23d8679 0x23e2579 0x23e2674 0x4b9967 0x670033 0x51be26 0x51c3ce 0x507cbd 0x5166f1 0x4bfd21 0x187de42 0x23d8679 0x23e2579 0x23674f7 0x23693f6 0x23f6160 0x491f30 0x185099e 0x17e7640 0x17b34c6 0x17b2d84 0x17b2c9b 0x1c7a7d8 0x1c7a88a 0x481626 0x247d 0x23e5)

Answer 1:

我从来没有想通了,是什么原因导致的问题,而是我的子类我TableViewCell(包含动态表中的一个),并让它实现neccessary协议和分配意见表委托和数据源,以它代替的视图控制器静态表视图。 这工作完全正常,并可能更好地设计反正。

下面是一些示例代码:

@interface CellWithTableInside : UITableViewCell <UITableViewDelegate, UITableViewDataSource>

@property (nonatomic, strong) UITableView* tableViewInCell;
@property (nonatomic, strong) NSArray* cellData;

@end

@implementation CellWithTableInside

@synthesize tableViewInCell;
@synthesize cellData = _cellData;

- (void)setCellData:(NSArray *)cellData
{
    _cellData = cellData;
    [tableViewInCell reloadData];
}

- (void)setFrame:(CGRect)frame
{
    [super setFrame:frame];
    [tableViewInCell setFrame:self.bounds];
}

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        [self setupTableView];
    }
    return self;
}

- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self) {
        [self setupTableView];
    }
    return self;
}

- (void)setupTableView
{
    tableViewInCell = [[UITableView alloc] initWithFrame:self.bounds];
    [tableViewInCell setDataSource:self];
    [tableViewInCell setDelegate:self];
    [self addSubview:tableViewInCell];
}

#pragma mark - Table view data source

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

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

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"NestedCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

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

@end

您可以使用CellWithTableInside这样的:

@interface HostingTableViewController : UITableViewController

@property (nonatomic, strong) NSArray* tableData;

@end

@implementation HostingTableViewController

@synthesize tableData;

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
    return YES;
}

- (void)viewDidLoad
{
    tableData = [NSArray arrayWithObjects:
                 [NSArray arrayWithObjects:@"February", nil],
                 [NSArray arrayWithObjects:@"Apple", @"Banana", nil],
                 [NSArray arrayWithObjects:@"John", @"Peter", @"Edward", nil],
                 [NSArray arrayWithObjects:@"Yellow", @"Green", @"Red", @"Blue", nil],
                 nil];
}

#pragma mark - Table view data source

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

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

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return 44 * [(NSArray*)[tableData objectAtIndex:indexPath.row] count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"CellWithTableInside";
    CellWithTableInside *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[CellWithTableInside alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

    [cell setCellData:[tableData objectAtIndex:indexPath.row]];
    return cell;
}

@end

这适用于这两种,动态或静态表视图。



文章来源: dynamic UITableView in static UITableViewCell