IOS 怎么修改Navigation Bar上的返回按钮文本颜色,箭头颜色以及导航栏按钮的颜色

self.navigationController.navigationBar.barTintColor = [UIColor blackColor];

self.navigationController.navigationBar.tintColor = [UIColor whiteColor];

[self.navigationController.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor whiteColor]}];

self.navigationController.navigationBar.translucent = NO;