//1.設(shè)置導(dǎo)航欄背景顏色[[UINavigationBar appearance] setBarTintColor:[UIColor orangeColor]]; //2.設(shè)置導(dǎo)航欄背景圖片[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"navigationBarImg"] forBarMetrics:UIBarMetricsDefault]; //3.設(shè)置導(dǎo)航欄標(biāo)題樣式[[UINavigationBar appearance] setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys: [UIColor purpleColor], NSForegroundColorAttributeName, [UIFont boldSystemFontOfSize:25], NSFontAttributeName, nil]]; //4.設(shè)置導(dǎo)航欄返回按鈕的顏色[[UINavigationBar appearance] setTintColor:[UIColor greenColor]];//5.設(shè)置導(dǎo)航欄隱藏[[UINavigationBar appearance] setHidden:YES];

//進(jìn)入頁(yè)面時(shí)設(shè)置顏色：灰色- (void)viewWillAppear:(BOOL)animated{ [super viewWillAppear:animated]; [self.navigationController.navigationBar setBarTintColor:[UIColor grayColor]];}//離開(kāi)頁(yè)面時(shí)還原為全局設(shè)置：橙色- (void)viewWillDisappear:(BOOL)animated{ [super viewWillDisappear:animated]; [self.navigationController.navigationBar setBarTintColor:[UIColor orangeColor]];}

#import “BaseNavigationController.h"//第一步：設(shè)置自定義導(dǎo)航控制器使用UIGestureRecognizerDelegate@interface BaseNavigationController ()<UIGestureRecognizerDelegate>@end@implementation BaseNavigationController- (void)viewDidLoad { [super viewDidLoad]; //第二步：設(shè)置自定義導(dǎo)航控制器的側(cè)滑手勢(shì)的代理 self.interactivePopGestureRecognizer.delegate = self;} //第三步：實(shí)現(xiàn)代理方法- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer{ if (self.childViewControllers.count == 1) { // 表示用戶(hù)在根控制器界面，就不需要觸發(fā)滑動(dòng)手勢(shì)， return NO; } return YES;}@end

#import "TestViewController.h"@interface TestViewController ()//第一步：設(shè)置一個(gè)屬性，存放導(dǎo)航欄底部分割線對(duì)象@property (nonatomic, strong) UIImageView *navBarBottomImage;@end@implementation TestViewController- (void)viewDidLoad { [super viewDidLoad]; ////第三步：獲取導(dǎo)航欄底部分割線對(duì)象 UIImageView *navBarBottomImage = [self findNavBarBottomImage:self.navigationController.navigationBar]; self.navBarBottomImage = navBarBottomImage; }//第四步：設(shè)置分割線的顯示或隱藏//進(jìn)入頁(yè)面隱藏分割線- (void)viewWillAppear:(BOOL)animated{ [super viewWillAppear:animated]; self.navBarBottomImage.hidden = YES;}//離開(kāi)頁(yè)面時(shí)顯示分割線-(void)viewWillDisappear:(BOOL)animated{ [super viewWillDisappear:animated]; self.navBarBottomImage.hidden = NO;}//第二步：添加用于獲取導(dǎo)航欄分割線的方法//導(dǎo)航欄底部分割線是一個(gè)UIImageView,且高度不超過(guò)1.0個(gè)高度，可據(jù)此查找此對(duì)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是滑動(dòng)視圖，內(nèi)容自動(dòng)向下偏移，不會(huì)被導(dǎo)航欄覆蓋UITextView *leftTextView = [[UITextView alloc] init];leftTextView.frame = CGRectMake(0, 0,100, kDeviceHeight); //leftTextView.backgroundColor = [UIColor lightGrayColor];leftTextView.text = @"君不見(jiàn)，黃河之水天上來(lái)，奔流到海不復(fù)回。君不見(jiàn)，高堂明鏡悲白發(fā)，朝如青絲暮成雪。人生得意須盡歡，莫使金樽空對(duì)月。天生我材必有用，千金散盡還復(fù)來(lái)。";leftTextView.font = [UIFont systemFontOfSize:18];leftTextView.editable = NO;[self.view addSubview:leftTextView]; //UIView是非滑動(dòng)視圖，內(nèi)容被導(dǎo)航欄部分覆蓋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，所以需要判斷if (@available(iOS 11.0,*)) { scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;}else{ //automaticallyAdjustsScrollViewIn，關(guān)閉自動(dòng)偏移的系統(tǒng)優(yōu)化 self.automaticallyAdjustsScrollViewInsets = NO;}

self.navigationController.navigationBar.translucent= NO;