iOS中导航栏的基本使用汇总

//1.设置导航栏背景颜色
[[UINavigationBar appearance] setBarTintColor:[UIColor orangeColor]];
 
//2.设置导航栏背景图片
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"navigationBarImg"] forBarMetrics:UIBarMetricsDefault];
 
//3.设置导航栏标题样式
[[UINavigationBar appearance] setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:
 [UIColor purpleColor], NSForegroundColorAttributeName,
 [UIFont boldSystemFontOfSize:25], NSFontAttributeName, nil]];
 
//4.设置导航栏返回按钮的颜色
[[UINavigationBar appearance] setTintColor:[UIColor greenColor]];

//5.设置导航栏隐藏
[[UINavigationBar appearance] setHidden:YES];

//进入页面时设置颜色：灰色
- (void)viewWillAppear:(BOOL)animated{
 [super viewWillAppear:animated];
 [self.navigationController.navigationBar setBarTintColor:[UIColor grayColor]];
}

//离开页面时还原为全局设置：橙色
- (void)viewWillDisappear:(BOOL)animated{
 [super viewWillDisappear:animated];
 [self.navigationController.navigationBar setBarTintColor:[UIColor orangeColor]];
}

#import “BaseNavigationController.h"
//第一步：设置自定义导航控制器使用UIGestureRecognizerDelegate
@interface BaseNavigationController ()<UIGestureRecognizerDelegate>
@end

@implementation BaseNavigationController
- (void)viewDidLoad {
 [super viewDidLoad];
 //第二步：设置自定义导航控制器的侧滑手势的代理
 self.interactivePopGestureRecognizer.delegate = self;
}
 

//第三步：实现代理方法
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer{
 if (self.childViewControllers.count == 1) {
 // 表示用户在根控制器界面，就不需要触发滑动手势，
 return NO;
 }
 return YES;
}
@end

#import "TestViewController.h"
@interface TestViewController ()
//第一步：设置一个属性，存放导航栏底部分割线对象
@property (nonatomic, strong) UIImageView *navBarBottomImage;
@end

@implementation TestViewController
- (void)viewDidLoad {
 [super viewDidLoad];
 ////第三步：获取导航栏底部分割线对象
 UIImageView *navBarBottomImage = [self findNavBarBottomImage:self.navigationController.navigationBar];
 self.navBarBottomImage = navBarBottomImage;
 }

//第四步：设置分割线的显示或隐藏
//进入页面隐藏分割线
- (void)viewWillAppear:(BOOL)animated{
 [super viewWillAppear:animated];
 self.navBarBottomImage.hidden = YES;
}
//离开页面时显示分割线
-(void)viewWillDisappear:(BOOL)animated{
 [super viewWillDisappear:animated];
 self.navBarBottomImage.hidden = NO;
}

//第二步：添加用于获取导航栏分割线的方法
//导航栏底部分割线是一个UIImageView,且高度不超过1.0个高度，可据此查找此对象
-(UIImageView *)findNavBarBottomImage:(UIView *)view {
 if ([view isKindOfClass:UIImageView.class] && view.bounds.size.height <= 1.0) {
 return (UIImageView *)view;
 }
 for (UIView *subview in view.subviews) {
 UIImageView *imageView = [self findNavBarBottomImage:subview];
 if (imageView) {
 return imageView;
 }
 }
 return nil;
}

//UITextView是滑动视图，内容自动向下偏移，不会被导航栏覆盖
UITextView *leftTextView = [[UITextView alloc] init];
leftTextView.frame = CGRectMake(0, 0,100, kDeviceHeight); //
leftTextView.backgroundColor = [UIColor lightGrayColor];
leftTextView.text = @"君不见，黄河之水天上来，奔流到海不复回。君不见，高堂明镜悲白发，朝如青丝暮成雪。人生得意须尽欢，莫使金樽空对月。天生我材必有用，千金散尽还复来。";
leftTextView.font = [UIFont systemFontOfSize:18];
leftTextView.editable = NO;
[self.view addSubview:leftTextView];
 
//UIView是非滑动视图，内容被导航栏部分覆盖
UIView *rightView= [[UIView alloc] initWithFrame:CGRectMake(150, 0, 100, 100)];
rightView.backgroundColor = [UIColor redColor];
[self.view addSubview:rightView];

//automaticallyAdjustsScrollViewInsets在11.0后失效，所以需要判断
if (@available(iOS 11.0,*)) {
 scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
}else{
 //automaticallyAdjustsScrollViewIn，关闭自动偏移的系统优化
 self.automaticallyAdjustsScrollViewInsets = NO;
}

self.navigationController.navigationBar.translucent= NO;