iOS 导航栏小结

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基础设置

• 隐藏导航栏

self.navigationController.navigationBarHidden = YES;

• 去掉透明效果

[self.navigationController.navigationBar setTranslucent:NO];

提示:
NO:无透明效果 + 会向下偏移64
YES：有透明效果 + 不会向下偏移64

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中间标题

• 修改中间标题的文字颜色

 self.navigationController.navigationBar.titleTextAttributes = [NSDictionary dictionaryWithObject:[UIColor colorWithRed:1.0 green:0.4118 blue:0.4392 alpha:1.0] forKey:UITextAttributeTextColor];

• 单独设置nav标题

 NSDictionary *navTitleArr = [NSDictionary dictionaryWithObjectsAndKeys:[UIFont boldSystemFontOfSize:20],UITextAttributeFont,[UIColor redColor],UITextAttributeTextColor ,[NSValue valueWithCGSize:CGSizeMake(2.0, 2.0)] , UITextAttributeTextShadowOffset ,[UIColor whiteColor] ,UITextAttributeTextShadowColor ,nil];
    [self.navigationController.navigationBar setTitleTextAttributes:navTitleArr];

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左右item设置

• 改变返回按钮的颜色

self.navigationController.navigationBar.tintColor = [UIColor redColor];

• 隐藏返回按钮

[self.navigationItem setHidesBackButton:YES];

• 去掉返回按钮的文字（如果添加了左按钮，可以自动去掉返回按钮的文字）

[[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(0, -60) forBarMetrics:UIBarMetricsDefault];

• 添加右按钮

 UIBarButtonItem *leftBtnItem = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"111"] style:UIBarButtonItemStyleDone target:self action:@selector(share:)];
    [self.navigationItem setRightBarButtonItem:leftBtnItem];

• 可以把左按钮 - 做成返回按钮

UIBarButtonItem *leftBtnItem= [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"nav_leftbtn"] style:UIBarButtonItemStyleDone target:self     action:@selector(goBackAction)];
    leftBtnItem.imageInsets = UIEdgeInsetsMake(0, -10, 0, 0);
    [self.navigationItem setLeftBarButtonItem:leftBtnItem];

• 修改返回按钮背景

UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
    btn.frame = CGRectMake(0, 0, 25, 25);
    UIBarButtonItem *leftItem = [[UIBarButtonItem alloc]initWithCustomView:btn];
    [btn setImage:[UIImage imageNamed:@"nav_leftbtn"] forState:UIControlStateNormal];
    [btn addTarget:self action:@selector(goBackAction:) forControlEvents:UIControlEventTouchUpInside];
    btn.imageEdgeInsets = UIEdgeInsetsMake(0, -10, 0, 10);
    [self.navigationItem setLeftBarButtonItem:leftItem];

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Nav背景

• 修改Nav背景
  （1）半透明

self.navigationController.navigationBar.backgroundColor = [UIColor colorWithRed:0.98f green:0.98f blue:0.98f alpha:1.00f];

（2）不带半透明的效果

self.navigationController.navigationBar.barTintColor = [UIColor redColor];

• 更改nav背景图片

UIImage *image = [UIImage imageNamed:@"333"];
    [self.navigationController.navigationBar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];

• 去掉nav 那个黑色的分割线

[self.navigationController.navigationBar setShadowImage:[UIImage new]];

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其他

• 添加系统默认的nav手势返回

self.navigationController.interactivePopGestureRecognizer.enabled = YES;
self.navigationController.interactivePopGestureRecognizer.delegate=(id)self;