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iOS 導(dǎo)航欄無縫圓滑的隱藏 Navigationbar實例代碼

更新時間：2017年11月21日 10:35:27 作者：小圭哥

本文通過實例代碼給大家介紹了iOS 導(dǎo)航欄無縫圓滑的隱藏 Navigationbar的效果，代碼簡單易懂，非常不錯，具有參考借鑒價值，需要的朋友可以參考下

1.ViewController

.m

- (void)viewDidLoad {
 [super viewDidLoad];
 self.title = @"隱藏導(dǎo)航欄";
 UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
 button.backgroundColor = [UIColor lightGrayColor];
 button.frame = CGRectMake(10, 100, 60, 30);
 [button addTarget:self action:@selector(buttonClick) forControlEvents:UIControlEventTouchUpInside];
 [self.view addSubview:button];
 self.navigationController.delegate = self;
}
- (void)buttonClick{
 ///跳轉(zhuǎn)到KKViewController
 [self performSegueWithIdentifier:@"pusht" sender:nil];
}

頭部代理

@interface ViewController ()<UINavigationControllerDelegate>

代理方法

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
 [self.navigationController setNavigationBarHidden: [self hiddenBarVc: viewController] animated: animated];
}
- (BOOL)hiddenBarVc:(UIViewController *)viewController {
 BOOL needHideNaivgaionBar = NO;
 if ([viewController isKindOfClass: [KKViewController class]]) {
 needHideNaivgaionBar = YES;
 }
 return needHideNaivgaionBar;
}

2.KKViewController（目標(biāo)ViewController）

新建一個KKViewController

.h

@property (nonatomic,strong) id popDelegate;

.m

- (void)viewDidLoad {
 [super viewDidLoad];
 self.title = @"第二個頁面";
 [self popSet];
}
- (void)popSet{
 _popDelegate = self.navigationController.interactivePopGestureRecognizer.delegate;
 SEL action = NSSelectorFromString(@"handleNavigationTransition:");
 UIPanGestureRecognizer *popPanGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self.popDelegate action:action];
 popPanGesture.maximumNumberOfTouches = 1;
 popPanGesture.delegate = self;
 [self.view addGestureRecognizer: popPanGesture];
}

頭部代理

@interface KKViewController ()<UIGestureRecognizerDelegate>

手勢代理方法

- (BOOL)gestureRecognizerShouldBegin:(UIPanGestureRecognizer *)gestureRecognizer{
 ///【下面兩個方法寫一個】
 ///全屏拖動
 CGPoint tragPoint = [gestureRecognizer translationInView:gestureRecognizer.view];
 if (tragPoint.x <= 0){
  return NO;
 }
 else{
  if (self.navigationController.viewControllers.count <= 1){
   return NO;
  }
  else{
   return YES;
  }
 }
// ///局部允許拖動
// CGPoint tragPoint = [gestureRecognizer locationInView:gestureRecognizer.view];
// NSLog(@"x=%f;y=%f",tragPoint.x,tragPoint.y);
// if (tragPoint.x > 60){///拖動的范圍
//  return NO;
// }
// else{
//  if (self.navigationController.viewControllers.count <= 1) {
//   return NO;
//  }
//  else{
//   return YES;
//  }
// }
}

效果圖