iphone - 我的 retainCount 正在增加？

Question

我在这里尝试构建 rss 阅读器，当用户完成阅读文章并按下 dealloc 时不会调用的问题

我得到了retainCount 6 & 有时是7！

我有很多定制面板

当按下后退按钮时，视图被弹出并且没有调用 dealloc ？！

.h 文件：

 @interface ArticalViewController : UIViewController<UIWebViewDelegate,UIScrollViewDelegate,UIActionSheetDelegate,ArticalBottomPanelDelegate,ArticalContentFetcherDelegate> {

    UIWebView * description_;
    UIActivityIndicatorView * ind_;
    ArticalModel * artical_;
    NSString * content;
    UIButton * faceBookShareBtn_;

     UIBarButtonItem * btnSharePanel_;


     CustomTopToolBar * topToolbar_;

     ArticalBottomPanel* articalBottomPanel_;
     MovingSharePanel * movingSharePanel_;

     int fontSize;
     BOOL favoStatus;
     ArticalContentFetcher *datafetcher_;     

 }


@property (nonatomic,retain) IBOutlet UIWebView * description;
@property (nonatomic,retain ) IBOutlet UIActivityIndicatorView * ind;
@property (nonatomic,retain) ArticalModel * artical;
@property (nonatomic,retain) IBOutlet UIButton * faceBookShareBtn;


@property (nonatomic,retain) IBOutlet  CustomTopToolBar * topToolbar;
@property (nonatomic , retain) IBOutlet ArticalBottomPanel * articalBottomPanel;
@property (nonatomic , retain) IBOutlet MovingSharePanel * movingSharePanel;

@property (nonatomic , retain) ArticalContentFetcher *datafetcher;




-(void) loadArtical:(ArticalModel * )artical;
- (void) loadArticalContentFromInternet;
-(void) changeFavoriteBtnIcon:(BOOL) status;
-(void)backBtnPressed:(id) sender;

-(IBAction)openPostBtnPressed:(id)sender;

@end

.m 文件：

    #import "ArticalViewController.h"


    @implementation ArticalViewController


    @synthesize description=description_;
    @synthesize artical=artical_; 
    @synthesize ind=ind_;

    @synthesize  faceBookShareBtn=faceBookShareBtn_;

    @synthesize topToolbar=topToolbar_;
    @synthesize articalBottomPanel=articalBottomPanel_;
    @synthesize movingSharePanel=movingSharePanel_;
    @synthesize datafetcher=datafetcher_;

    - (void)dealloc
    {
        NSLog(@"ArticalViewController : dealloc");
        [description_ release];
        [ind_ release];
        [artical_ release];
        [content release];
        [faceBookShareBtn_ release];

        [btnSharePanel_ release];


        [topToolbar_ release];

        [articalBottomPanel_ release];
        [movingSharePanel_ release];
        [datafetcher_ release];

        [super dealloc];
    }

    #pragma mark -
    #pragma mark - View lifecycle

    - (void)viewDidLoad
    {
        [super viewDidLoad];
        fontSize=100;


        [self.articalBottomPanel setDelegate:self];
        [self.movingSharePanel setArtical:self.artical];
        [self.movingSharePanel setParentView:self];


        [self.topToolbar.rightButon setFrame:CGRectMake(260 , 3,  50, 30)];
        [self.topToolbar.rightButon addTarget:self action:@selector(backBtnPressed:) forControlEvents:UIControlEventTouchUpInside];
        [self.topToolbar.rightButon setImage:[UIImage imageNamed:@"back-button"] forState:UIControlStateNormal];

        [self.topToolbar.leftButon setFrame:CGRectMake(10 , 3,  50, 30)];
        [self.topToolbar.leftButon setImage:[UIImage imageNamed:@"button-toolbar-post-link"] forState:UIControlStateNormal];
         [self.topToolbar.leftButon addTarget:self action:@selector(openPostBtnPressed:) forControlEvents:UIControlEventTouchUpInside];


        self.topToolbar.label.text =self.artical.category;
      //  [label release];

        //Navigation Buttons
        self.navigationItem.hidesBackButton=YES;

        //Check if artical is favorited or not
        [self changeFavoriteBtnIcon:[Favorites chechArtical:self.artical]];



        [self.description setBackgroundColor:[UIColor clearColor]];
        [self.description setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"1px-post-views-background"]]];

        if([[self.artical content] length] >1){
            NSLog(@"[[self.artical content] length] >1");
           [self loadArtical:self.artical];
        }else {
            NSLog(@"else");
            self.datafetcher=[[ArticalContentFetcher alloc ]init ];
            [self.datafetcher setArticalContentFetcherDelegate:self];
             [NSThread detachNewThreadSelector:@selector(loadArticalContentFromInternet) toTarget:self withObject:nil];

        }




    }
    #pragma mark -
    #pragma mark ArticalConnectionFeed Delegate Methods
    -(void) articalContentConnectionDoneWithArtical:(ArticalModel *)artical {
        NSLog(@"articalContentConnectionDoneWithArtical");
        [self loadArtical:artical];
    }
    -(void) articalContentConnectionFailed{
        NSLog(@"articalContentConnectionFailed");

    }
    #pragma mark -
    #pragma mark ArticalBottomPanelDelegate Delegate Methods

    -(void) openPanelFired{
        NSLog(@"openPanelFired");
        [self.movingSharePanel movePanel];
      //  [self.articalBottomPanel.btnOpenSharePanel setHidden:YES];
    }

    -(void) fontBtnFired:(int)font{
       // NSLog(@"fontBtnFired : %d",font);
        if(font==1){
            [self.description stringByEvaluatingJavaScriptFromString:@"document.getElementsByTagName('body')[0].style.webkitTextSizeAdjust= '90%'"];
        }else {
            [self.description stringByEvaluatingJavaScriptFromString:@"document.getElementsByTagName('body')[0].style.webkitTextSizeAdjust= '-10%'"];
        }
    }
    -(void) favoBtnFired {
        NSLog(@"favoBtnFired");
        favoStatus=[Favorites processArtical:self.artical];
        [self changeFavoriteBtnIcon:favoStatus];
    }

    -(void) changeFavoriteBtnIcon:(BOOL) status{
        if (status){
            [self.articalBottomPanel.btnFavo setImage: [UIImage imageNamed:@"active-star.png"] forState:UIControlStateNormal];

        }else {
            [self.articalBottomPanel.btnFavo setImage: [UIImage imageNamed:@"star.png"] forState:UIControlStateNormal];
        }
    }
    #pragma mark -
    #pragma mark UIWebView Delegate Methods
    -(BOOL) webView:(UIWebView *)inWeb shouldStartLoadWithRequest:(NSURLRequest *)inRequest navigationType:(UIWebViewNavigationType)inType {
        if([InternetConnection getInternetStatus]){
            if ( inType == UIWebViewNavigationTypeLinkClicked ) {
                [[UIApplication sharedApplication] openURL:[inRequest URL]];
                return NO;
            }
            return YES;
        }else {
            [InternetConnection ShowNoInternetAlert];
            return NO;
        }


    }

    - (void)webViewDidFinishLoad:(UIWebView *)webView {
        [self.ind stopAnimating];
    }


    #pragma mark -
    #pragma mark Class Methods
    -(void) loadArtical:(ArticalModel * )artical{
        NSLog(@"loadArtical");
        [self.artical setContent:[artical content]];
        [self.artical setCategory:[artical category]];


        NSString * style=[[NSString alloc ] initWithFormat:@"<style> #offline img{display:none;} .wrap{text-align:right;line-height:22px; direction:rtl;} .title{font-size:20px;margin-bottom:5px;} .date{font-size:13px;} .cat{font-size:13px;} </style>"];

        if([InternetConnection getInternetStatus])
            NSLog(@"[InternetConnection getInternetStatus] : true");
        content=[[NSString alloc] initWithFormat:@"%@<div class='wrap' ><div class='title'>%@</div><div class='date'>%@</div><div class='cat'>%@</div>%@</div>",style,[self.artical title],[DateProcessor getInternetDateAndTimeForArticals:self.artical.pubDate],[self.artical category],[self.artical content] ];
        [ self.description loadHTMLString:content baseURL:[NSURL URLWithString:@""]];

        [style release];
    }

    - (void) loadArticalContentFromInternet{
        NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
        [self.datafetcher loadArticlContentWithID:self.artical.ID];
        [[NSRunLoop currentRunLoop] run ];
        [pool release];


    }
    -(void)backBtnPressed:(id) sender{
            NSLog(@"backBtnPressed");

        [self.navigationController popViewControllerAnimated:YES];


    }

    #pragma mark -
    #pragma mark IBActions      


    -(IBAction)openPostBtnPressed:(id)sender{
        if([InternetConnection getInternetStatus]){
            [InternetConnection openExternalUrl:self.artical.link];
        }else{
            [InternetConnection ShowNoInternetAlert];
        }


    }

    @end

添加 ：

当我调用我使用的 Artical 时

avc=[[ArticalViewController alloc]initWithNibName:@"ArticalViewController" bundle:nil];
    avc.artical=[self.feeds objectAtIndex:indexPath.row]; 
    [self.navCon pushViewController:avc animated:YES];

    [avc release]; 

Answer 1

我发现跟踪保留计数和丢失保留释放对的最佳方法是使用Instruments。点击个人资料（Cmd ⌘</kbd>+I) and choose Leaks template. Even if leaks will not be discovered automatically, retain changes are logged so you can manually trace additional retains. To do that, find your class name in Object Summary when selected Allocations instrument. If you can't find it, this means that all instances were deallocated. Otherwise click on the arrow that appears when you select class name: You will see all living instances of your class:

如果您认为有些实例应该已经被释放，请选择一个并单击出现在对象地址旁边的箭头。现在，您应该看到在该对象上调用的任何保留或释放，其方法名称是执行此操作：

RefCt列在调用操作后显示 retainCount，当您双击任何保留/释放时，仪器将显示执行此操作的代码行：

如您所见，对象被添加到数组中，并且从未从中删除。

以我的经验，这是查找Leaks仪器无法自动检测到的内存泄漏的最快和最简单的方法。我认为另一个好的做法是查看对象摘要中的#Living，以确保活动实例的数量完全符合您的预期。

Answer 2

您没有理由关心保留计数是多少。只要确保你平衡你的保留和释放。

Answer 3

看起来很奇怪，但retainCount对于计算您的留存率根本没有用。[myObject retain]事情会因为你打电话等其他原因而被保留[[MyClass alloc] init]。

最好忽略retainCount并学习内存管理规则。retainCount会让你更加困惑。如果您只为 iOS 5 开发，最好忘记内存管理并使用ARC。

Answer 4

NSThread detachNewThreadSelector:toTarget:withObject:保留其目标，在本例中为self. 此外，self 是这里一些事情的代表，通常你不想保留代表，所以如果你已经编写了这些协议，请检查你没有这样做。