导航栏相关知识
一、从坐标(0,0)从导航栏下面算起
self.edgesForExtendedLayout=UIRectEdgeBottom;
二、导航栏是否半透明
self.navigationController.navigationBar.translucent = NO;
三、导航栏隐藏
- (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [self.navigationController setNavigationBarHidden:YES animated:animated]; } - (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; [self.navigationController setNavigationBarHidden:NO animated:animated]; }
四、导航栏背景颜色的设置
// 将导航栏背景变为紫色
self.navigationController.navigationBar.barTintColor = [UIColor purpleColor];
// 将状态栏和导航栏字体全变为白色 self.navigationController.navigationBar.barStyle = UIBarStyleBlack;
五、设置导航栏的title字体大小、颜色
[self.navigationBar setTitleTextAttributes:@{ NSForegroundColorAttributeName : GMainBgColor_323232, NSFontAttributeName : GTextFont_16 }];
六、导航栏(包括状态栏)设置背景图片
UIImage *backGroundImage = [UIImage imageNamed:@"home_nav_bg"]; backGroundImage = [backGroundImage resizableImageWithCapInsets:UIEdgeInsetsZero resizingMode:UIImageResizingModeStretch]; // 这一句解决导航栏平铺问题,尤其在渐变色背景图片时 [self.navigationController.navigationBar setBackgroundImage:backGroundImage forBarPosition:UIBarPositionAny barMetrics:UIBarMetricsDefault]; [self.navigationController.navigationBar setShadowImage:[UIImage new]];
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