UITableView附件查看未顯示

爲什麼下面不顯示正確的UITableView附件視圖？它只是顯示在nib文件中選擇的UIAcessoryTypeCheckmark。UITableView附件查看未顯示

- (UITableViewCell *)tableView:(UITableView *)tableView cellForManagedObject:(NSManagedObject *)managedObject withIndexPath:(NSIndexPath *)indexPath{ 

    static NSString *CellIdentifier = @"Selection"; 

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 

    if(cell == nil) { 
     cell = tvCell; 
     self.tvCell = nil; 
    } 
    self.tableView.rowHeight = 70.0f; 

    //Background 
    BOOL useDarkBackground = NO; //odd 
    if(indexPath.row %2 == 0) useDarkBackground = YES; //even 
    NSString *backgroundImagePath = [[NSBundle mainBundle] pathForResource:useDarkBackground ? @"DarkBackground" : @"LightBackground" ofType:@"png"]; 
    UIImage *backgroundImage = [[UIImage imageWithContentsOfFile:backgroundImagePath] stretchableImageWithLeftCapWidth:0.0 topCapHeight:1.0]; 
    cell.backgroundView = [[[UIImageView alloc] initWithImage:backgroundImage] autorelease]; 
    cell.backgroundView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; 
    cell.backgroundView.frame = cell.bounds; 

    //Checkmark 
    cell.userInteractionEnabled = YES; 
    NSString *checkmarkImagePath; 
    checkmarkImagePath = [[NSBundle mainBundle] pathForResource:[selectedObjects containsObject:managedObject] ? @"checkSelected" : @"checkUnselected" ofType:@"png"]; 
    if([selectedObjects count] == 0) { 
     checkmarkImagePath = [[NSBundle mainBundle] pathForResource:@"checkUnselected" ofType:@"png"]; 
    } 
      UIImage *checkmarkImage = [[UIImage imageWithContentsOfFile:checkmarkImagePath] stretchableImageWithLeftCapWidth:0.0 topCapHeight:1.0]; 
    UIImageView *imageView = [[[UIImageView alloc] initWithImage:checkmarkImage] autorelease]; 
    imageView.contentMode = UIViewContentModeScaleAspectFit; 
    imageView.frame = CGRectMake(10.0, 10.0, imageView.frame.size.width/1.2, imageView.frame.size.height/1.2); 

    return cell; 

}

出於某種原因，下面確實工作：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 
NSManagedObject *objectToChange = [[self fetchedResultsControllerForTableView:tableView] objectAtIndexPath:indexPath]; //The object 

[tableView deselectRowAtIndexPath:[tableView indexPathForSelectedRow] animated:NO]; 

UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath]; 

NSString *checkmarkImagePath = [[NSBundle mainBundle] pathForResource:[selectedObjects containsObject:objectToChange] ? @"checkSelected" : @"checkUnselected" ofType:@"png"]; 
UIImage *checkmarkImage = [[UIImage imageWithContentsOfFile:checkmarkImagePath] stretchableImageWithLeftCapWidth:0.0 topCapHeight:1.0]; 
UIImageView *imageView = [[[UIImageView alloc] initWithImage:checkmarkImage] autorelease]; 
imageView.contentMode = UIViewContentModeScaleAspectFit; 
imageView.frame = CGRectMake(10.0, 10.0, imageView.frame.size.width/1.2, imageView.frame.size.height/1.2); 

cell.accessoryView = imageView; 
}

非常感謝！

來源

2011-06-02 joshim5

看起來好像你在UIImageView中添加了第一個代碼塊中單元的附件視圖。

你也漏水到處都是。確保您遵守Apple提出的memory management guidelines。

來源

2011-06-02 16:21:14 csano

我知道我有很多內存泄漏。我知道要修復什麼，並且一旦我真正擁有了一些可行的東西，就會修復它 – joshim5 2011-06-02 16:27:17

@ joshim5 - 你沒有問過，但我要評論 - 它會很好地幫助你早日寫出你的習慣代碼沒有內存泄漏的地方。很快你就不必考慮這個問題了，而且你也不需要修復泄漏到生產代碼中的泄漏。我的2美分。 – Rayfleck 2011-07-15 22:04:29

在您的cellForRowAtIndexPath中，您並不像在didSelect方法中那樣將accessoryView分配給單元格。

來源

2011-06-02 16:24:27 Rayfleck

UITableView附件查看未顯示

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