objective-c - 在代码中向导航项添加按钮

Question

如何在视图控制器中的导航项右侧添加一个按钮？

Answer 1

self.navigationItem.leftBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"About" style:UIBarButtonItemStyleBordered target:self action:@selector(aboutB)] autorelease];