我想添加很多UIBarButtonItem's to a UINavigationbar，不仅仅是左右按钮：
logoButton = [[UIBarButtonItem alloc] initWithTitle:@"A Button" style:UIBarButtonItemStyleBordered target:self action:@selector(logoButtonAClicked:)];
logoButton2 = [[UIBarButtonItem alloc] initWithTitle:@"B Button" style:UIBarButtonItemStyleBordered target:self action:@selector(logoButtonBClicked:)];
logoButto3 = [[UIBarButtonItem alloc] initWithTitle:@"C Button" style:UIBarButtonItemStyleBordered target:self action:@selector(logoButtonCClicked:)];
self.navigationController.navigationBarHidden = NO;
self.title = @"Title";
NSArray* items = [[NSArray alloc] initWithObjects:logoButtonA, logoButtonB, logoButtonC, nil];
self.navigationController.navigationBar.items = items;
I get a SIGBRT on self.navigationController.navigationBar.items = items;
如何添加多个UIBarButtonItems to a UINavigationBar?
你需要添加UIBarButtonItem实例到一个UINavigationItem，不至于UINavigationBar。所以你可以这样做：
NSArray *buttonArray = [NSArray arrayWithObjects:logoButton, logoButton2, logoButton3, nil];
self.navigationItem.leftBarButtonItems = buttonArray;
如果您希望按钮位于右侧，请使用rightBarButtonItems.
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