[英]image scaling for UITabBar background image
我在我的应用程序中创建了UITabBarController。
然后在viewDidLoad()
我想更改UITabBar背景图像。 这是我试图让它工作的代码:
class MainTabBarController: UITabBarController {
override func viewDidLoad() {
super.viewDidLoad()
UITabBar.appearance().translucent = false
UITabBar.appearance().backgroundColor = UIColor.clearColor()
UITabBar.appearance().backgroundImage = UIImage(named: "tabbar_background")
UITabBar.appearance().contentMode = .ScaleAspectFit
}
}
但结果不正确( 图像 )。 有人可以帮助我填充整个tabbar框架吗?
尝试将image
调整为标签栏大小。 或添加imageView
到tabBar
作为subview
,然后利用图像中imageView
。
将TabBarController
子类化并在其中添加imageview
:
var bgView: UIImageView = UIImageView(image: UIImage(named: "tabBarBackground.png"))
bgView.frame = CGRectMake(0, 420, 320, 60)//you might need to modify this frame to your tabbar frame
self.view.addSubview(bgView)
以下是带有自定义图标的自定义半透明标签栏图像的代码。 您需要通过变量直接引用标签栏。
斯威夫特3
private func setupTabBar() {
print ("Setting up the Tab Bar and Items")
tabBarView.clipsToBounds = true
tabBarView.backgroundImage = UIImage()
let bgView: UIImageView = UIImageView(image: #imageLiteral(resourceName: "TabBarBackground"))
bgView.frame = tabBarView.bounds
tabBarView.addSubview(bgView)
tabBarView.tintColor = UIColor.white
UITabBar.appearance().tintColor = UIColor.gray
UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName : UIColor.white], for: .normal)
UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName : UIColor.gray], for: .selected)
tabBarLimitsItemView.image = #imageLiteral(resourceName: "TabIconLimits").withRenderingMode(UIImageRenderingMode.alwaysOriginal)
tabBarControlsItemView.image = #imageLiteral(resourceName: "TabIconControls").withRenderingMode(UIImageRenderingMode.alwaysOriginal)
tabBarPayRulesItemView.image = #imageLiteral(resourceName: "TabIconPayRules").withRenderingMode(UIImageRenderingMode.alwaysOriginal)
tabBarSettingsItemView.image = #imageLiteral(resourceName: "TabIconSettings").withRenderingMode(UIImageRenderingMode.alwaysOriginal)
}
这对我来说很快3
class MyTabBarController: UITabBarController, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let backgroundImage = UIImageView(image: UIImage(named: "gray background"))
backgroundImage.frame = backgroundImage.bounds
self.view.addSubview(backgroundImage)
}
我使用clipsToBounds解决了这个问题。
这是我的例子:
let tabBar = self.tabBar
tabBar.backgroundImage = UIImage()
tabBar.clipsToBounds = true
这在iPhone X上完美运行
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