在UITableView中收到内存警告

Question

我加载带有图像的表格并向上和向下滚动。大约一分钟后，我收到“收到内存警告”通知。在看到此消息几次后，应用程序崩溃了。

每次用户滚动到表格底部时，我会通过滚动位置5图像来加载。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"aCell";
PostTable_Cell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

CGFloat cellHeight = (screenWidth / 16) * 10 + self.view.frame.size.height * 0.09;


cell = [[PostTable_Cell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier withParentWidth:self.view.frame.size.width withCellHeight:cellHeight withParent:self withPostArray:[postsArray objectAtIndex:indexPath.row] withCurrentIndexPostArray:(int)indexPath.row];

[cell setUserInteractionEnabled:YES];

cell.selectionStyle = UITableViewCellStyleDefault;
tableView.separatorColor = [UIColor blackColor];

return cell;

}

编辑：

- (UITableViewCell *)tableView:(UITableView *)tableView  cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"aCell";
PostTable_Cell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

CGFloat cellHeight = (screenWidth / 16) * 10 + self.view.frame.size.height * 0.09;

if (cell == nil)
{
    cell = [[PostTable_Cell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier withParentWidth:self.view.frame.size.width withCellHeight:cellHeight withParent:self withPostArray:[postsArray objectAtIndex:indexPath.row] withCurrentIndexPostArray:(int)indexPath.row];
    [cell setUserInteractionEnabled:YES];
    cell.selectionStyle = UITableViewCellStyleDefault;
    tableView.separatorColor = [UIColor blackColor];

}
else
{
    [cell reloadCellContetWithParent:self withPostArray:[postsArray objectAtIndex:indexPath.row] withCurrentIndexPostArray:(int)indexPath.row];
}

return cell;
 }

编辑3：

@implementation PostTable_Cell

- (void)awakeFromNib
{
// Initialization code
}

  - (void)setSelected:(BOOL)selected animated:(BOOL)animated
 {
[super setSelected:selected animated:animated];

// Configure the view for the selected state
 }

 -(void)dealloc
 {
 #ifdef DEBUG
NSLog(@"%@ destoyed",NSStringFromClass([self class]));
 #endif
 }

 - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier withParentWidth:(CGFloat)parentWidth withCellHeight:(CGFloat)celltHeight  withParent:(id)parent withPostArray:(id)postArray withCurrentIndexPostArray:(int)IndexNumber
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self)
{
    mainDalegate = (Main*)parent;
    self.backgroundColor = [UIColor clearColor];
    Post *curPost = (Post*)postArray;

    postId =  [curPost getPostId];
    postText =  [curPost getPostText];
    postImageUrl =  [curPost getImageUrl];
    commentsCount = [curPost getCommentsCount];
    likesCount = [curPost getLikesCount];
    likeByMe = [curPost getLikeByMe];
    facebookId = [curPost getCreatorFacebookId];
    publisherName =[curPost getCreatorName];
    currentIndexPostArray = IndexNumber;

    [GeneralMethods setNew_width:parentWidth ToView:self];
    [GeneralMethods setNew_height:celltHeight ToView:self];

    [self cellBuilderForPost];
}

return self;
 }

Answer 1

mainDalegate = (Main*)parent; 看起来这可能是你的问题。由于您正在创建保留周期，因此您的单元格不会被释放。 rules to avoid retain cycles。