ios - 在 UITabBarItem 上使用自定义选择和未选择的图像

Question

我试图将我自己的图像设置为 UITabBarItem 上的选定和未选定图像，但没有成功。我在 View Controller viewDidLoad 和 viewWillAppear 方法中尝试了以下代码，但都不起作用:

[self.tabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"on_rojo"] withFinishedUnselectedImage:[UIImage imageNamed:@"on"]];

我做错了什么？我也读过:iOS 5: UITabBarItem setFinishedSelectedImage:withFinishedUnselectedImage: not working / ignored ，但我不是以编程方式在 IB 上创建了我的 UITabBarController。这是问题所在吗？

提前谢谢你，

Answer 1

您必须为每个选项卡项指定图像。以下代码对我有用

if ([[tabBarController.tabBar.items objectAtIndex:0] respondsToSelector:@selector(setFinishedSelectedImage:withFinishedUnselectedImage:)]) {

  [[tabBarController.tabBar.items objectAtIndex:0] setFinishedSelectedImage:[UIImage imageNamed:@"blabla1.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"bleble1.png"]];
  [[tabBarController.tabBar.items objectAtIndex:1] setFinishedSelectedImage:[UIImage imageNamed:@"blabla2.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"bleble2.png"]];
  [[tabBarController.tabBar.items objectAtIndex:2] setFinishedSelectedImage:[UIImage imageNamed:@"blabla3.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"bleble3.png"]];
  [[tabBarController.tabBar.items objectAtIndex:3] setFinishedSelectedImage:[UIImage imageNamed:@"blabla4.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"bleble4.png"]];

}