低內存警告與幾個EGOImageView

Question

我要求你在我的應用程序的內存問題的幫助！

我在表格中有一個單元格，其中包含一個或多個EGOImageView s的水平滾動視圖。此單元格始終位於第0行，但我經常需要用另一個Image重新加載此單元格。

的問題是：當我重裝我的手機太多的時間（30或40倍），我收到一個內存警告或時有時無的錯誤和應用程序崩潰...

我使用ARC國防部。這裏是我的代碼預覽：

單元代碼爲行0

GalleryDetailCell *cell = (GalleryDetailCell *) [tableView dequeueReusableCellWithIdentifier: @"GalleryAnimated"]; 
if (cell == nil) { 
    cell = [[GalleryDetailCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier: @"GalleryAnimated" animated:animated]; 
} 
[cell configureGallery:id]; 
cellToReturn = cell; 

你有任何想法，我的錯誤是

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier animated:(BOOL)animated{  
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]; 
    if (self) { 
     // Initialization code 
     [self.contentView setFrame:CGRectMake(0, 0, 320, 240)]; 
     self.scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 240)]; 
     [self.scrollView setDelegate:self]; 
     [self.scrollView setPagingEnabled:YES]; 
     [self.scrollView setShowsHorizontalScrollIndicator:NO];    
     self.scrollView.contentSize = CGSizeMake(320, 240); 

     pageControl = [[UIPageControl alloc]initWithFrame:CGRectMake(0, 220, 320, 20)]; 
     [pageControl setCurrentPage:0]; 
     [self.contentView addSubview:self.scrollView]; 
     [self.contentView addSubview:pageControl]; 
     isAnimated= animated; 


    return self; 
} 


- (void)configureGallery:(NSInteger)accommodationId{ 

counter =0; 
Accommodation *item = [[[DataManager sharedManager]accommodations]objectAtIndex:accommodationId]; 
numberPictures = [[item photo_set]count]; 

if (numberPictures >1) { 
    [scrollView setContentSize:CGSizeMake((numberPictures + 2)*320, 240)]; 
} else [scrollView setContentSize:CGSizeMake(320, 240)]; 

[pageControl setNumberOfPages:numberPictures]; 

// add the last image into the first position 
if (numberPictures) { 
    [self addImageWithName:[NSString stringWithFormat:@"%@%@",[[DataManager sharedManager]baseUrl],[[item.photo_set objectAtIndex:numberPictures-1]thumbnail_gallery]] atPosition:0]; 
} 


// add all of the images to the scroll view 
for (int i = 0; i < numberPictures; i++) { 
    [self addImageWithName:[NSString stringWithFormat:@"%@%@",[[DataManager sharedManager]baseUrl],[[item.photo_set objectAtIndex:i]thumbnail_gallery]] atPosition:i+1 ]; 
} 

// add the first image into the last position 
[self addImageWithName:[NSString stringWithFormat:@"%@%@",[[DataManager sharedManager]baseUrl],[[item.photo_set objectAtIndex:0]thumbnail_gallery]] atPosition:numberPictures+1]; 

[self.scrollView scrollRectToVisible:CGRectMake(320,0,320,416) animated:NO]; 
[self performSelector:@selector(switchToNextPhoto) withObject:nil afterDelay:5]; 


} 

- (void)addImageWithName:(NSString*)imageString atPosition:(int)position { 
// add image to scroll view 
UIImageView * placeHolderView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"France"]]; 
[placeHolderView setFrame:CGRectMake(position*320, 0, 320, 240)]; 
UIActivityIndicatorView * activityView = [[UIActivityIndicatorView alloc]initWithFrame:CGRectMake((position*320)+160, 120, 20, 20)]; 
[activityView startAnimating]; 
EGOImageView *imageView = [[EGOImageView alloc] init]; 


imageView.frame = CGRectMake(position*320, 0, 320, 240); 
[self.scrollView addSubview:placeHolderView]; 
[self.scrollView addSubview:activityView]; 
[self.scrollView addSubview:imageView]; 

imageView.imageURL = [NSURL URLWithString:imageString]; 
} 

表的代碼？當我重新加載我的細胞時，是否必須手動處理我的EGOImageView並將它們放到nil？

謝謝你的時間！

Answer 1

EGOImageView可能導致內存泄漏，請注意。

首先，檢查它是否釋放_responseData在EGOImageLoadConnection的dealloc中，這樣它看起來像：

- (void)dealloc 
{ 
    self.response = nil; 
    self.delegate = nil; 
    [_connection release]; 
    [_imageURL release]; 
    [_responseData release]; //this line is absent in current EGOImageLoadConnection.m 

    [super dealloc]; 
} 

重新分配它使用它，無其圖像屬性（記得視圖時，然後調用cancelImageLoad，我使用ARC代碼示例）：

- (void)dealloc 
{ 
    //... 
    self.myView.image = nil; 
    [self.myView cancelImageLoad]; 
    //... 
} 

而且我也建議你有時候打電話：

[EGOCache.currentCache clearCache]; 

無論如何，隨意使用儀器。打開分配工具，單擊虛擬機跟蹤器並將自動快照設置爲1秒延遲。然後觀看髒內存列和內存標籤70行，它顯示了您的應用程序中消耗了多少內存映像。