UITabBarItem的终极写法(UIImageRenderingMode)的使用

#import "AppDelegate.h" #import "ViewController.h" @interface AppDelegate () @end @implementation AppDelegate - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]]; self.window.backgroundColor = [UIColor whiteColor]; [self.window makeKeyAndVisible]; ViewController * vc = [[ViewController alloc]init]; UIViewController * vc2 = [[UIViewController alloc]init]; UINavigationController * nav = [[UINavigationController alloc]initWithRootViewController:vc]; UINavigationController * nav2 = [[UINavigationController alloc]initWithRootViewController:vc2]; UITabBarController * tabBarController = [[UITabBarController alloc]init]; tabBarController.viewControllers = @[nav,nav2]; vc.tabBarItem = [[UITabBarItem alloc]initWithTitle:@"1" image:[[UIImage imageNamed:@"footer_a11"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] selectedImage:[[UIImage imageNamed:@"footer_a1"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; <img src="https://img-blog.csdn.net/20160914164416272?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /> vc2.tabBarItem = [[UITabBarItem alloc]initWithTitle:@"2" image:[[UIImage imageNamed:@"footer_a11"]imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate] selectedImage:[[UIImage imageNamed:@"footer_a1"]imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate]]; vc2.tabBarController.tabBar.tintColor = [UIColor redColor]; <img src="https://img-blog.csdn.net/20160914164612842?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /> // 在该模式的枚举值中，一共存在三个值， // UIImageRenderingModeAutomatic、 UIImageRenderingModeAlwaysOriginal与UIImageRenderingModeAlwaysTemplate。 // // 1.UIImageRenderingModeAutomatic // 根据图片的使用环境和所处的绘图上下文自动调整渲染模式。 // 2.UIImageRenderingModeAlwaysOriginal // 始终绘制图片原始状态，不使用Tint Color。 // 3.UIImageRenderingModeAlwaysTemplate // 始终根据Tint Color绘制图片，忽略图片的颜色信息。 self.window.rootViewController = tabBarController; return YES; }