Question

基本上我想要做的是我想用数组中的字符串填充表视图。我做了第二个UIviewcontroller和一个自定义单元格，显示图像和另外两个标签。但是当我运行代码时，没有错误消息，但tableview是空白的，几乎就像它根本不识别代码一样。我在.h文件中声明了它的委托和数据源。

    #import "ViewController4.h"
    #import "Cell.h"
    #import "XMLparse.h"

    @interface ViewController4 ()

@end

@implementation ViewController4

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

-(NSMutableArray *)objects {
    if (!Datarray) {
        Datarray = [[NSMutableArray alloc]init];
    }
    return Datarray;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    Datarray = [[NSMutableArray alloc]initWithObjects:@"USD",@"EUR",@"JPY",@"BGN",@"CZK",@"DKK",@"GBP",@"HUF",@"LTL",@"PLN",@"RON",@"SEK",@"CHF",@"NOK",@"HRK",@"RUB",@"TRY",@"AUD",@"BRL",@"CAD",@"CNY",@"HKD",@"IDR",@"ILS",@"INR",@"KRW",@"MXN",@"MYR",@"NZD",@"PHP",@"SGD",@"THB",@"ZAR", nil];
    Tableview.delegate = self;
    XMLparse *datee = [[XMLparse alloc]init];
    [datee loadDataFromXML];
    Date.text = [NSString stringWithFormat:@"Last updated: %@",[datee tid]];
}

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

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

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

- (CGFloat)tableView:(UITableView *)tableview heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return 78;
}


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

    Cell *cell = (Cell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
    if (cell == nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"Cell" owner:self options:nil];
        cell = [nib objectAtIndex:0];
    }

  //  cell.ratename.text = [tableData objectAtIndex:indexPath.row];
 //   cell.thumbnailImageView.image = [UIImage imageNamed:[thumbnails objectAtIndex:indexPath.row]];
    cell.currencyname.text = [Datarray objectAtIndex:indexPath.row];

    return cell;
}




@end

Answer 1

您必须将self设置为UITableView的datasource属性。我建议您编辑以下代码。

- (void)viewDidLoad
{
    [super viewDidLoad];
    Datarray = [[NSMutableArray alloc]initWithObjects:@"USD",@"EUR",@"JPY",@"BGN",@"CZK",@"DKK",@"GBP",@"HUF",@"LTL",@"PLN",@"RON",@"SEK",@"CHF",@"NOK",@"HRK",@"RUB",@"TRY",@"AUD",@"BRL",@"CAD",@"CNY",@"HKD",@"IDR",@"ILS",@"INR",@"KRW",@"MXN",@"MYR",@"NZD",@"PHP",@"SGD",@"THB",@"ZAR", nil];
    Tableview.delegate = self;
    Tableview.dataSource = self;    // <---- added code for setting datasource.
    XMLparse *datee = [[XMLparse alloc]init];
    [datee loadDataFromXML];
    Date.text = [NSString stringWithFormat:@"Last updated: %@",[datee tid]];
}

填写tableview，其中数组内容不起作用

1 个答案: