Question

我的iPhone应用程序在主uiviewcontroller和帮助uiviewcontroller之间来回切换时严重泄漏。

以下是主视图的来源，后面是帮助视图的来源。

主要观点 - 提供帮助.....................

// Changes from operational view to Help view.
- (IBAction)showHelp:(id)sender 
{    
    // End trial mode:
    self.stop_trial_if_started; 
    self.rename_trial_if_edited;

    // Switch to trial help:
    help_view_context = 0;

    HelpView *controller = [[HelpView alloc] initWithNibName:@"HelpView" bundle:nil];
    controller.delegate = self;

    controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
    [self presentModalViewController:controller animated:YES];

    [controller release];
}

帮助视图 - INIT .............................

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor viewFlipsideBackgroundColor];   

    help_scroll.editable = FALSE;

  return;
}

帮助 - 返回主视图.........................

// User clicked the button to return to operational view:
- (IBAction)done:(id)sender {
    NSLog(@"help-  done");
    if( help_view_context == 0 ) {
        [self.delegate trial_help_DidFinish:self];  
    }else{
          [self.delegate file_help_DidFinish:self]; 
    }
}

主要观点 - 从帮助中退回................................

// Inits operational view when user changes from Help view back to operational view.
- (void)trial_help_DidFinish:(HelpView *)controller {
    NSLog(@"trial_help_DidFinish");
    [self dismissModalViewControllerAnimated:YES];
    self.init_trial_operation;
}

Answer 1

每次调用showHelp:时，您正在创建一个ref count为1的控制器和一个本地引用：

HelpView *controller = [[HelpView alloc] initWithNibName:@"HelpView" bundle:nil];

在此方法结束时，您将失去对它的引用。

您恰好在done:（自我）和*_help_didFinish（控制器）中引用了它，但您从未在其中任何一个位置发布过它。解雇控制器很好，但你还必须release。

（另一种选择是永远不要创建第二个，并将iVar维持在原始状态。）

Answer 2

你可能会在这条线上泄漏

controller.delegate = self;

代表的财产声明是什么？如果它不是assign，那么你需要更改它（首选选项）或确保你在dealloc控制器的HelpView方法中释放它。

如何在两个视图之间翻转时修复iOS泄漏

2 个答案: