模态View显示NavigationBar
NavigationBarViewController *navigationBar= [[NavigationBarViewController alloc]init];
UINavigationController *nav=[[UINavigationController alloc] initWithRootViewController:navigationBar];
[self presentViewController:nav animated:YES completion:nil];
在 NavigationBarViewController 里面对NavigationBar设置
self.navigationController.navigationBar.translucent = NO;// 是否透明
[self.navigationItem setTitle:@"旅行"];
[self.navigationController.navigationBar setBarTintColor:[UIColor redColor]];//背景颜色
[self.navigationController.navigationBar setBarStyle:UIBarStyleBlackTranslucent];//去掉底部线条
NSDictionary *textAttributes=@{NSForegroundColorAttributeName:[UIColor whiteColor],NSFontAttributeName:[UIFont systemFontOfSize:20]};
[self.navigationController.navigationBar setTitleTextAttributes:textAttributes];//字体样式
UIBarButtonItem *leftBar=[[UIBarButtonItem alloc ]initWithTitle:@"Left" style:UIBarButtonItemStyleDone target:self action:nil];
UIBarButtonItem *leftBar1=[[UIBarButtonItem alloc ]initWithTitle:@"Left" style:UIBarButtonItemStyleDone target:self action:nil];
UIBarButtonItem *rightBar=[[UIBarButtonItem alloc ]initWithBarButtonSystemItem:UIBarButtonSystemItemTrash target:self action:nil];
UIBarButtonItem *rightBar1=[[UIBarButtonItem alloc ]initWithBarButtonSystemItem:UIBarButtonSystemItemReply target:self action:nil];
leftBar.width=-10;
self.navigationItem.leftBarButtonItems=[NSArray arrayWithObjects:leftBar,leftBar1, nil];
self.navigationItem.rightBarButtonItems=[NSArray arrayWithObjects:rightBar,rightBar1, nil];
self.navigationItem.leftBarButtonItem.enabled=NO;//左边button 禁掉 灰色
[self.navigationController.navigationBar setUserInteractionEnabled:NO]; //所有的button 都是readonly的，颜色不是灰色的