1 //IOS8以前使用的是：2 3 UITabBarItem *photoItem = [[UITabBarItem alloc] initWithTitle:@"首页" image:[UIImage imageNamed:@"app2"] tag:0];4 5 photo.tabBarItem = photoItem;6 7 [photo.tabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"app1"] withFinishedUnselectedImage:[UIImage imageNamed:@"app2"]];8 9 [photoItem release];

•  查看API之后看到使用了新的API方法

1 //使用新的API方法来初始化tabBarItem2 - (instancetype)initWithTitle:(NSString *)title image:(UIImage *)image selectedImage:(UIImage *)selectedImage3 //同时对使用的UIImage设置一下UIImageRenderingMode，使用UIImageRenderingModeAlwaysOriginal4 5 //用例：6 UIImage * normalImage = [[UIImage imageNamed:@"nor.png"]  imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];7 UIImage * selectImage = [[UIImage imageNamed:@"select.png"]  imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];8      9 UITabBarItem * tabBarItem = [[UITabBarItem alloc]initWithTitle:@"" image:normalImage selectedImage:selectImage];