iOS之tabbar圖片去除渲染以及字體顏色統一配置

轉發：http://www.cnblogs.com/qianLL/p/5521228.html

 

方式一 

代碼實現 這種要寫很多代碼 ，每個控制器都要寫 

 UIImage *image=[UIImage imageNamed:@"tabBar_friendTrends_click_icon"];

//    不讓tabbar底部有渲染的關鍵代碼

     image=[image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

    vc01.tabBarItem.selectedImage=image;

 

更改tabbar下方的文字樣式，大小， 顏色

  NSMutableDictionary *atts=[NSMutableDictionary dictionary];

// 更改文字大小

    atts[NSFontAttributeName]=[UIFont systemFontOfSize:12];

// 更改文字顏色

    atts[NSForegroundColorAttributeName]=[UIColor darkGrayColor];

 

    NSMutableDictionary *selectedAtts=[NSMutableDictionary dictionary];
    selectedAtts[NSFontAttributeName]=[UIFont systemFontOfSize:12];
    selectedAtts[NSForegroundColorAttributeName]=[UIColor greenColor];

    [vc01.tabBarItem setTitleTextAttributes:selectedAtts forState:UIControlStateSelected];

 

 

方式二  

 

在 Assets.xcassets文件夾中更改 改變之后不用代碼  並且在所有的控制器里面都會被作用到

具體操作

 

appearance屬性

//    通過appearance統一設置所有的UITabBarItem的文字屬性

//    后面帶有UI_APPEARANCE_SELECTOR的方法，都可以通過appearance同意設置

例如UITabBarItem的文字屬性

案例； 

    NSMutableDictionary *atts=[NSMutableDictionary dictionary];
    atts[NSFontAttributeName]=[UIFont systemFontOfSize:12];
    atts[NSForegroundColorAttributeName]=[UIColor grayColor];
   
    NSMutableDictionary *selectedAtts=[NSMutableDictionary dictionary];
    selectedAtts[NSFontAttributeName]=atts[NSFontAttributeName];

    selectedAtts[NSForegroundColorAttributeName]=[UIColor darkGrayColor];

// 在這里 只要更改，所有的文字都改

 

    UITabBarItem *item=[UITabBarItem appearance];
    [item setTitleTextAttributes:atts forState:UIControlStateNormal];
    [item setTitleTextAttributes:selectedAtts forState:UIControlStateSelected];
   
    //    添加子控制器
    UIViewController *vc01=[[UIViewController alloc]init];
    vc01.view.backgroundColor=[UIColor redColor];
    vc01.tabBarItem.title=@"精華";
    vc01.tabBarItem.image=[UIImage imageNamed:@"tabBar_essence_icon"];
    UIImage *image=[UIImage imageNamed:@"tabBar_friendTrends_click_icon"];
//    不讓tabbar底部有渲染的關鍵代碼

     image=[image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

    vc01.tabBarItem.selectedImage=image;

// 把控制器 添加到 UITabBarController里面去

    [self addChildViewController:vc01];

   
    UIViewController *vc02=[[UIViewController alloc]init];
    vc02.tabBarItem.title=@"新帖";
    vc02.tabBarItem.image=[UIImage imageNamed:@"tabBar_new_click_icon"];
    vc02.tabBarItem.selectedImage=[UIImage imageNamed:@"tabBar_new_click_icon"];
    vc02.view.backgroundColor=[UIColor cyanColor];
    [self addChildViewController:vc02];
   
    UIViewController *vc03=[[UIViewController alloc]init];
    vc03.view.backgroundColor=[UIColor blueColor];
    vc03.tabBarItem.title=@"關注";
    vc03.tabBarItem.image=[UIImage imageNamed:@"tabBar_friendTrends_icon"];
    vc03.tabBarItem.selectedImage=[UIImage imageNamed:@"tabBar_friendTrends_click_icon"];
    [self addChildViewController:vc03];
   
    UIViewController *vc04=[[UIViewController alloc]init];
    vc04.tabBarItem.title=@"我";
    vc04.tabBarItem.image=[UIImage imageNamed:@"tabBar_me_icon"];
    vc04.tabBarItem.selectedImage=[UIImage imageNamed:@"tabBar_me_click_icon"];
    vc04.view.backgroundColor=[UIColor yellowColor];

    [self addChildViewController:vc04];