objective-c - 关闭模态窗口时的 EXC_BAD_ACCESS ([NSWindow _restoreLevelAfterRunningModal] : message sent to deallocated instance)

Question

在我的主 ViewController 中，我有以下代码:

- (IBAction)listFunctions:(id)sender //button clicked
{
    FunctionListController *functionListController = [[FunctionListController alloc] initWithWindowNibName:@"FunctionList"];

    NSWindow *functionListWindow = [functionListController window];

    [NSApp runModalForWindow: functionListWindow];

    NSLog(@"done");
}

FunctionListController 是 FunctionList.nib 的文件所有者和 NSWindowController 的子类，并实现协议(protocol) NSWindowDelegate .

下面是FunctionListController的实现:

@implementation FunctionListController

- (id)initWithWindow:(NSWindow *)window
{
    self = [super initWithWindow:window];
    if(self)
    {
        // Initialization code here.
    }

    return self;
}

- (void)windowDidLoad
{
    [super windowDidLoad];

    // Implement this method to handle any initialization after your window controller's window has been loaded from its nib file.
    self.window.delegate = self;
}

- (void)windowWillClose:(NSNotification *)notification
{
    [NSApp stopModal];
}

@end

当模式窗口关闭时，NSLog(@"done"); 运行并显示，但是在 listFunctions 完成后，我收到 EXC_BAD_ACCESS 错误。

使用 NSZombiesEnabled 我得到错误 [NSWindow _restoreLevelAfterRunningModal]: message sent to deallocated instance。

编辑:

我正在使用 ARC。

Answer 1

尝试 [functionListWindow setReleasedWhenClosed:NO] 并保持对窗口的强引用直到关闭。