UITableView自定义accessoryView只出现在最后一个单元格

我想为UITableView使用自定义accessoryView。至于accessorView我正在使用UIImageView。我面临的问题是accessoryView只出现在最后一行UITableView。UITableView自定义accessoryView只出现在最后一个单元格

In viewDidLoad我初始化了UIImageView。

customAccessory = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 10, 15)]; 
customAccessory.image = [UIImage imageNamed:@"icon_right"];

在cellForRowAtIndexPath我这样做：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
    MyDayCell *cell =(MyDayCell *)[self.tableView dequeueReusableCellWithIdentifier:@"MyDayCell"]; 
    if (cell == nil) { 
     NSArray *cellArray = [[NSBundle mainBundle] loadNibNamed:@"MyDayCell" owner:self options:nil]; 
     cell = [cellArray objectAtIndex:0]; 
    } 
    switch (indexPath.row) { 
     case 0: 
      cell.image.image = [UIImage imageNamed:@"icon_guide"]; 
      break; 
     case 1: 
      cell.image.image = [UIImage imageNamed:@"icon_media"]; 
      break; 
     case 2: 
      cell.image.image = [UIImage imageNamed:@"icon_lives"]; 
      break; 
     case 3: 
      cell.image.image = [UIImage imageNamed:@"icon_ask"]; 
      break; 
     case 4: 
      cell.image.image = [UIImage imageNamed:@"icon_k"]; 
      break; 
     default: 
      break; 
    } 
    cell.name.text = [dataSource objectAtIndex:indexPath.row]; 
    cell.accessoryView = customAccessory; 
    return cell; 
}

这是截图：

enter image description here

来源

2014-04-21 Rashad

您在所有单元格中使用了相同的对象'customAccessory'，因此它将显示在最后一个单元格中。为每个单元创建附件视图将解决该问题。 – Akhilrajtr

是的。但为什么会发生？为什么我不能为所有单元使用相同的accessoryView？ – Rashad

视图只能有一个父级。无法同时多次显示单个视图实例。 – rmaddy

还有就是customAccessory只有一个实例。你应该为每个单元格创建UIImageView。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
    MyDayCell *cell =(MyDayCell *)[self.tableView dequeueReusableCellWithIdentifier:@"MyDayCell"]; 
    if (cell == nil) { 
     NSArray *cellArray = [[NSBundle mainBundle] loadNibNamed:@"MyDayCell" owner:self options:nil]; 
     cell = [cellArray objectAtIndex:0]; 

     customAccessory = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 10, 15)]; 
     customAccessory.image = [UIImage imageNamed:@"icon_right"]; 
     cell.accessoryView = customAccessory; 

    } 

    // Here your code... 
    // An return cell 
     return cell; 
}

来源

2014-04-21 05:09:45

试试这个，

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 

    .... 
    if (cell == nil) { 
     NSArray *cellArray = [[NSBundle mainBundle] loadNibNamed:@"MyDayCell" owner:self options:nil]; 
     cell = [cellArray objectAtIndex:0]; 
     UIImageView *customAccessoryView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 10, 15)]; 
     customAccessoryView.image = [UIImage imageNamed:@"icon_right"]; 
     cell.accessoryView = customAccessoryView; 
    } 

    .... 
}

来源

2014-04-21 05:10:09 Akhilrajtr

它的工作原理，但你能解释为什么会发生这种情况？ – Rashad

视图只能包含在单个父视图的层次结构中。只要将它添加到新的，它就会从前一个中删除。在这里，当你将视图添加到单元格时，它将从前一个单元格中移除。 – Akhilrajtr

视图只能有一个上海华。当您将自定义视图添加到第二个单元格时，它将从第一个单元格中移除。因此，为每个表视图单元格创建自定义附件视图。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
    MyDayCell *cell =(MyDayCell *)[self.tableView dequeueReusableCellWithIdentifier:@"MyDayCell"]; 
    if (cell == nil) { 
     NSArray *cellArray = [[NSBundle mainBundle] loadNibNamed:@"MyDayCell" owner:self options:nil]; 
     cell = [cellArray objectAtIndex:0]; 
    } 
    switch (indexPath.row) { 
     case 0: 
      cell.image.image = [UIImage imageNamed:@"icon_guide"]; 
      break; 
     case 1: 
      cell.image.image = [UIImage imageNamed:@"icon_media"]; 
      break; 
     case 2: 
      cell.image.image = [UIImage imageNamed:@"icon_lives"]; 
      break; 
     case 3: 
      cell.image.image = [UIImage imageNamed:@"icon_ask"]; 
      break; 
     case 4: 
      cell.image.image = [UIImage imageNamed:@"icon_k"]; 
      break; 
     default: 
      break; 
    } 
    cell.name.text = [dataSource objectAtIndex:indexPath.row]; 
    UIImageView *customAccessory = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 10, 15)]; 
    customAccessory.image = [UIImage imageNamed:@"icon_right"]; 
    cell.accessoryView = customAccessory; 
    return cell; 
}

来源

2014-04-21 05:11:24 Apurv

UITableView自定义accessoryView只出现在最后一个单元格

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