VCOne *vc1 = [[VCOne alloc]init];
// [self.window setRootViewController:vc1];
//导航栏的高度是44
UINavigationController *navCtrl = [[UINavigationController alloc]initWithRootViewController:vc1];
//显示工具栏
navCtrl.toolbarHidden = NO;
//
//创建自己的导航栏,不使用系统默认的
//第一步,隐藏系统的导航栏
navCtrl.navigationBarHidden = YES;
//第二步,创建自己的导航栏
UINavigationBar *navBar = [[UINavigationBar alloc]initWithFrame:CGRectMake(0, 20, 320, 46)];
navBar.tag = 101;
//第三部,创建导航元素xiang
UINavigationItem *navItem = [[UINavigationItem alloc]initWithTitle:@"根视图"];
//第四步:添加按钮元素
UIBarButtonItem *btn01 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemEdit target:nil action:nil];
UIBarButtonItem *btn02 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCompose target:nil action:nil];
//第五步:将按钮赋给导航元素项
navItem.leftBarButtonItem = btn01;
navItem.rightBarButtonItem = btn02;
//第六步:将导航元素项推入导航栏元素栈
[navBar pushNavigationItem:navItem animated:YES];
//第七部:将导航栏加入视图中
[navCtrl.view addSubview:navBar];
navBar.barStyle = UIBarStyleBlackTranslucent;
[self.window setRootViewController:navCtrl];
// [self.window setRootViewController:vc1];
//导航栏的高度是44
UINavigationController *navCtrl = [[UINavigationController alloc]initWithRootViewController:vc1];
//显示工具栏
navCtrl.toolbarHidden = NO;
//
//创建自己的导航栏,不使用系统默认的
//第一步,隐藏系统的导航栏
navCtrl.navigationBarHidden = YES;
//第二步,创建自己的导航栏
UINavigationBar *navBar = [[UINavigationBar alloc]initWithFrame:CGRectMake(0, 20, 320, 46)];
navBar.tag = 101;
//第三部,创建导航元素xiang
UINavigationItem *navItem = [[UINavigationItem alloc]initWithTitle:@"根视图"];
//第四步:添加按钮元素
UIBarButtonItem *btn01 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemEdit target:nil action:nil];
UIBarButtonItem *btn02 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCompose target:nil action:nil];
//第五步:将按钮赋给导航元素项
navItem.leftBarButtonItem = btn01;
navItem.rightBarButtonItem = btn02;
//第六步:将导航元素项推入导航栏元素栈
[navBar pushNavigationItem:navItem animated:YES];
//第七部:将导航栏加入视图中
[navCtrl.view addSubview:navBar];
navBar.barStyle = UIBarStyleBlackTranslucent;
[self.window setRootViewController:navCtrl];