objective-c - NSWindowController showWindow :nil does nothing

就像标题中一样，[myWindowController showWindow:nil]不起作用。您可能需要了解以下一些事实:

我的窗口 Controller :KRAuthenticationWindowController

接口(interface)构建器文件:AuthenticationWindow.xib

文件的所有者是KRAuthenticationWindowController

window导出已连接到窗口

Window的delegate连接到文件的所有者

未选中Window的Visible at launch

Window的Release when closed也未选中

我的代码如下所示:

// KRApplicationDelegate.m

- (void)applicationDidFinishLaunching:(NSNotification *)notification {
    NSLog(@"%s",__PRETTY_FUNCTION__);
    KRAuthenticationWindowController *authWindowController = [[KRAuthenticationWindowController alloc] init];
    [authWindowController showWindow:nil];
    [[authWindowController window] makeKeyAndOrderFront:nil];
}

// KRAuthenticationWindowController.m

- (id)init {
    self = [super initWithWindowNibName:@"AuthenticationWindow"];
    if(!self) return nil;
    NSLog(@"%s",__PRETTY_FUNCTION__);
    return self;
}

- (void)loadWindow {
    [super loadWindow];
    [self.window setBackgroundColor:[NSColor colorWithDeviceWhite:0.73 alpha:1]];
    NSLog(@"%s",__PRETTY_FUNCTION__);
}

- (void)windowDidLoad {
    [super windowDidLoad];
    NSLog(@"%s",__PRETTY_FUNCTION__);
}

- (void)showWindow:(id)sender {
    [super showWindow:sender];
    NSLog(@"%@",self.window);
    NSLog(@"%s",__PRETTY_FUNCTION__);
}

我的控制台输出:

2013-02-24 16:21:45.420 Application[3105:303] -[KRApplicationDelegate applicationDidFinishLaunching:]
2013-02-24 16:21:45.421 Application[3105:303] -[KRAuthenticationWindowController init]
2013-02-24 16:21:45.428 Application[3105:303] -[KRAuthenticationWindowController loadWindow]
2013-02-24 16:21:45.428 Application[3105:303] -[KRAuthenticationWindowController windowDidLoad]
2013-02-24 16:21:45.556 Application[3105:303] <NSWindow: 0x10016e860>
2013-02-24 16:21:45.556 Application[3105:303] -[KRAuthenticationWindowController showWindow:]

我想我只是错过了一些重要的东西。任何帮助，将不胜感激。

最佳答案

尝试将authWindowController转换为实例变量。当前，它是一个局部变量。当局部变量消失时，窗口 Controller 可能会被释放，并且带有它的窗口也不会被显示。

关于objective-c - NSWindowController showWindow :nil does nothing，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/15053211/