显示主机菜单时更新NSMenuItem
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我需要更新“ 0”以显示进度（例如Time Machine对其进行备份）。问题是当我在那个
NSMenuItem
title
没有找到相关结果
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卧沫
，但是您可能只想使用，所以当下拉菜单时菜单项标题是正确的。 这是菜单项的简单示例，该菜单项计算自应用启动以来的秒数：- (void)doStuff; { static int i = 0; [foo setTitle:[NSString stringWithFormat:@\"%d\", ++i]]; } - (void)applicationDidFinishLaunching:(NSNotification *)aNotification; { NSInvocation *invocation = [NSInvocation invocationWithMethodSignature: [self methodSignatureForSelector:@selector(doStuff)]]; [invocation setTarget:self]; [invocation setSelector:@selector(doStuff)]; [[NSRunLoop mainRunLoop] addTimer:[NSTimer timerWithTimeInterval:1 invocation:invocation repeats:YES] forMode:NSRunLoopCommonModes]; }