Question

我试图在UITableView中输出我的NSMutableArray，tableView正在显示，但它的输出是不正确的数据。我期待这样的事情

Check   10
Try     11
Test    12

这是我的代码

- (void)viewDidLoad
{
arr1 = [[NSMutableArray alloc] initWithObjects:@"Check",@"Try",@"Test" ,nil];
arr2 = [[NSMutableArray alloc] initWithObjects:@"10",@"11",@"12", nil];
self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 400, 500, 500)];
self.tableView.dataSource = self;
self.delegate = self;
[self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cells"];
[self.view addSubview:self.tableView];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cells" forIndexPath:indexPath];

UIImageView *images = [[UIImageView alloc] initWithFrame:CGRectMake(8, 8, 50, 50)];
[images setImage:[UIImage imageNamed:[img objectAtIndex:indexPath.row]]];
[cell addSubview:images];

UILabel *label1 = [[UILabel alloc] initWithFrame:CGRectMake(131, 27, 59, 21)];
label1.text = [arr1 objectAtIndex:indexPath.row];
[cell addSubview:label1];

UILabel *label2 = [[UILabel alloc] initWithFrame:CGRectMake(231, 27, 67, 21)];
label2.text = [arr2 objectAtIndex:indexPath.row];
[cell addSubview:label2];

return cell;
}

它的输出是

Check    10
Try      11
Check    10

Answer 1

请不要在tableview委托的cellForRowAtIndex中添加SubView。因为它被多次调用。在您的情况下，自定义UITableViewCell，例如：

MyTableViewCell.h：

@interface MyTableViewCell : UITableViewCell
- (void)setImages:(UIImage *)images label1:(NSString *)label1 label2:(NSString *)label2;

@end

MyTableViewCell.m：

@interface MyTableViewCell()

@property (nonatomic, strong) UIImageView *images;
@property (nonatomic, strong) UILabel *label1;
@property (nonatomic, strong) UILabel *label2;

@end

@implementation MyTableViewCell

- (void)awakeFromNib {
    [super awakeFromNib];
    _images = [[UIImageView alloc] initWithFrame:CGRectMake(8, 8, 50, 50)];
    [self addSubview:_images];

    _label1 = [[UILabel alloc] initWithFrame:CGRectMake(131, 27, 59, 21)];
    [self addSubview:_label1];

    _label2 = [[UILabel alloc] initWithFrame:CGRectMake(231, 27, 67, 21)];
    [self addSubview:_label2];
}

- (void)setImages:(UIImage *)images label1:(NSString *)label1 label2:(NSString *)label2 {
    _images.image = images;
    _label1.text = label1;
    _label2.text = label2;
}

修改你的代码：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    MyTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cells" forIndexPath:indexPath];

    UIImage *image = [UIImage imageNamed:[img objectAtIndex:indexPath.row]];
    NSString *text1 = [arr1 objectAtIndex:indexPath.row];
    NSString *text2 = [arr2 objectAtIndex:indexPath.row];

    [cell setImages:image label1:text1label2:text2];

    return cell;
}

UITableViewCell显示不正确的数据

1 个答案: