UITableView自定義accessoryView只出現在最後一個單元格

我想爲UITableView使用自定義accessoryView。至於accessorView我正在使用UIImageView。我面臨的問題是accessoryView只出現在最後一行UITableView。UITableView自定義accessoryView只出現在最後一個單元格

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我這樣做：

- (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; 
}

這是截圖：

enter image description here

來源

2014-04-21 Rashad

您在所有單元格中使用了相同的對象'customAccessory'，因此它將顯示在最後一個單元格中。爲每個單元創建附件視圖將解決該問題。 – Akhilrajtr

是的。但爲什麼會發生？爲什麼我不能爲所有單元使用相同的accessoryView？ – Rashad

視圖只能有一個父級。無法同時多次顯示單個視圖實例。 – rmaddy

還有就是customAccessory只有一個實例。你應該爲每個單元格創建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; 
}

來源

2014-04-21 05:09:45

試試這個，

- (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; 
    } 

    .... 
}

來源

2014-04-21 05:10:09 Akhilrajtr

它的工作原理，但你能解釋爲什麼會發生這種情況？ – Rashad

視圖只能包含在單個父視圖的層次結構中。只要將它添加到新的，它就會從前一箇中刪除。在這裏，當你將視圖添加到單元格時，它將從前一個單元格中移除。 – Akhilrajtr

視圖只能有一個上海華。當您將自定義視圖添加到第二個單元格時，它將從第一個單元格中移除。因此，爲每個表視圖單元格創建自定義附件視圖。

- (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; 
}

來源

2014-04-21 05:11:24 Apurv

UITableView自定義accessoryView只出現在最後一個單元格

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