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[ios]action:@selector(doSome) | NavigationBar 的backBarButtonItem 与修改背景色

    博客分类：
  • ios
 
阅读更多

不错的一个介绍：http://my.oschina.net/plumsoft/blog/55927

 

action:@selector(doSome)与action:@selector(doSome:)

 

今天 遇到的一个问题

其实很简单

有：表示调用有参数的doSome

没则表示调用没参数的

 

 

同理action:@selector(doSome:asd:)

调用- doSome: xx asd:xx;

 

 

 

NavigationController 的 backBarButtonItem

 

设置backBarButtonItem 这个设置是针对于子导航层级的，也就是你push到下个视图控制器的时候才会看到。

 

 

修改背景

 

颜色    self.navigationController.navigationBar.tintColor=[UIColor yellowColor];

 

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

 

 

//    [self.navigationController.navigationBar setBackgroundColor:[UIColor yellowColor]];//这个是无效果的
//    [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"Default.png"] forBarMetrics:UIBarMetricsDefault]; 修改背景[用图片]
    self.navigationController.navigationBar.tintColor=[UIColor yellowColor];//修改背景[用颜色] 注意：会连按钮色也改了
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