NavigationBar设置

NavigationBar设置

1. 设置背景颜色

[self.navigationController.navigationBar setBarTintColor:[UIColor redColor]];

2. Translucent设置成透明度,设置成YES会有一种模糊效果

[self.navigationController.navigationBar setTranslucent:YES];

3. 设置背景图片，图片样式需要根据情况适用

[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"FlyElephant.png"] forBarMetrics:UIBarMetricsDefault];

4. 设置NavigationBar标题大小及颜色

之前设置是通过UITextAttributeFont，UITextAttributeTextColor，UITextAttributeTextShadowColor和UITextAttributeTextShadowOffset设置，现在需要都根据NS开头的属性去设置

NSDictionary  *textAttributes=@{NSForegroundColorAttributeName:[UIColor whiteColor],NSFontAttributeName:[UIFont systemFontOfSize:20]};

[self.navigationController.navigationBar setTitleTextAttributes:textAttributes];

5. NavigationBar设置中间的标题或者自定义View

[self.navigationItem setTitle:@"旅行"];
[self.navigationItem setTitleView:[UIImage imageNamed:@"FlyElephant"];

6. 单个或多个左右Item设置

//单个leftItem设置:
UIBarButtonItem  *leftBarButton=[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"BackIcon"] style:UIBarButtonItemStylePlain target:self action:@selector(popBack)];
 [leftBarButton setTintColor:[UIColor colorWithWhite:0 alpha:1]];
 self.navigationItem.leftBarButtonItem=leftBarButton;
 //多个rightItem设置:
UIBarButtonItem *firstItem=[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemReply target:self action:nil];
UIBarButtonItem *secondItem=[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemTrash target:self action:nil];
NSArray *rightItems=@[firstItem, secondItem];
self.navigationItem.rightBarButtonItems=rightItems;