如果我的自定义选项卡中的图像已经具有正确的尺寸设置格式，该如何实用地缩小它们？

Question

我的“自定义”标签栏中的图像太大，超出了该栏。它们的尺寸大小正确，如何通过编程将其缩小？

override func viewDidLoad() {
super.viewDidLoad()
selectedIndex = 0


    let selectedImage1 = UIImage(named: "Food")?.withRenderingMode(.alwaysOriginal)
    let deSelectedImage1 = UIImage(named: "Food Grey")?.withRenderingMode(.alwaysOriginal)
    tabBarItem = self .tabBar.items?[0]
    tabBarItem.image = deSelectedImage1
    tabBarItem.selectedImage = selectedImage1


    let selectedImage2 = UIImage(named: "Fitness")?.withRenderingMode(.alwaysOriginal)
    let deSelectedImage2 = UIImage(named: "Fitness grey")?.withRenderingMode(.alwaysOriginal)
    tabBarItem = self .tabBar.items?[1]
    tabBarItem.image = deSelectedImage2
    tabBarItem.selectedImage = selectedImage2


    let selectedImage3 = UIImage(named: "Home")?.withRenderingMode(.alwaysOriginal)
    let deSelectedImage3 = UIImage(named: "Home grey")?.withRenderingMode(.alwaysOriginal)
    tabBarItem = self .tabBar.items?[2]
    tabBarItem.image = deSelectedImage3
    tabBarItem.selectedImage = selectedImage3

    let selectedImage4 = UIImage(named: "PP")?.withRenderingMode(.alwaysOriginal)
    let deSelectedImage4 = UIImage(named: "PP grey")?.withRenderingMode(.alwaysOriginal)
    tabBarItem = self .tabBar.items?[3]
    tabBarItem.image = deSelectedImage4
    tabBarItem.selectedImage = selectedImage4

    let selectedImage5 = UIImage(named: "Calendar")?.withRenderingMode(.alwaysOriginal)
    let deSelectedImage5 = UIImage(named: "Calendar grey")?.withRenderingMode(.alwaysOriginal)
    tabBarItem = self .tabBar.items?[4]
    tabBarItem.image = deSelectedImage5
    tabBarItem.selectedImage = selectedImage5
}