添加navbar以及上面的左右按钮代码

UINavigationBar *navBar =
[[UINavigationBaralloc]
initWithFrame:CGRectMake(0, 0, 824, 44)];

navBar.barStyle = UIBarStyleDefault;

UINavigationItem
*navItem = [[UINavigationItemalloc]
init];

navItem.leftItemsSupplementBackButton = YES;

navItem.title = @"Add
CRA";

UIBarButtonItem
*leftButton = [[UIBarButtonItemalloc]
initWithTitle:@"Back"

style:UIBarButtonItemStylePlain

target:self

action:@selector(back)];

navItem.leftBarButtonItem =
leftButton;

UIBarButtonItem
*rightButton = [[UIBarButtonItemalloc]
initWithTitle:@"Done"

style:UIBarButtonItemStylePlain

target:self

action:@selector(done)];

navItem.rightBarButtonItem =
rightButton;

navBar.items = @[navItem];

[self.view addSubview:navBar];

添加navbar以及上面的左右按钮代码,码迷,mamicode.com