[英]Swift 3 / How to reuse extensions
我正在嘗試保存代碼並進行重構。
在我的項目中,我在多個UIViewController
使用以下adMobBanner
擴展。
整個擴展是可重用的,我只需要更改ViewController的名稱即可:
extension MyVC: GADInterstitialDelegate {
但是由於我在多個類中使用它,所以這些類的長度不必要地超過了。
有某種重用擴展名的方法嗎? 就像是:
func myExtension(vc: UIViewController) {
extension vc: GADInterstitialDelegate {
....
}
}
由myExtension(MyViewController)
調用
我知道這段代碼是胡說八道,但是它提供了我想轉置的想法。 有沒有類似的東西? 還是用重復代碼保存擴展代碼行的另一種選擇是什么? 非常感謝您的幫助。
我的擴展名:
extension MyViewController: GADInterstitialDelegate {
// MARK: - Setup Ads
func setupAds() {
// Setup our interstitial ad initially
interstitial.delegate = self
interstitial.load(GADRequest())
}
// MARK: - Load Interstitial Ad
func loadFullScreenAd() {
// GADInterstitial's are single use. You have to create a new GADInterstitial for each presentation
// So, if you'd like to show more than one GADInterstitial in your apps session we need this
// This func will be used to create a new GADInterstitial after one has been displayed and dismissed
interstitial = GADInterstitial(adUnitID: getAdmobInterstitial())
interstitial.delegate = self
interstitial.load(GADRequest())
}
// MARK: - Show Interstitial Ad
func showFullScreenAd() {
// Call this function when you want to present the interstitial ad
// ie. game over, transition to another vc, etc...
// Make sure you give atleast a few seconds for this ad to load before atempting to present it
// For example, don't try to present this ad in viewDidAppear
// Check if the interstitial ad is loaded before trying to present it
if self.interstitial.isReady {
self.interstitial.present(fromRootViewController: self)
}
}
// MARK: - GADInterstitial Delegate Methods
func interstitialDidReceiveAd(_ ad: GADInterstitial!) {
print("interstitialDidReceiveAd")
showFullScreenAd()
}
func interstitialWillPresentScreen(_ ad: GADInterstitial!) {
print("interstitialWillPresentScreen")
// If you needed to pause anything in your app this would be the place to do it
// ie. sounds, game state, etc...
}
func interstitialDidDismissScreen(_ ad: GADInterstitial!) {
print("interstitialDidDismissScreen")
// The GADInterstitial has been shown and dismissed by the user
// Lets load another one for the next time we want to show a GADInterstitial
//loadFullScreenAd()
// If you paused anything in the interstitialWillPresentScreen delegate method this is where you would resume it
}
func interstitial(_ ad: GADInterstitial!, didFailToReceiveAdWithError error: GADRequestError!) {
print("interstitial didFailToReceiveAdWithError: \(error)")
}
}
到目前為止,對我有用的是創建一個名為"Name regarding to the content about-extension of class
的文件,然后將其放入名為Extensions
的組文件夾中。因此,在您的情況下,我將這樣稱呼該文件:
GADInterstitialDelegate-UIViewControllerExtension.swift
里面的代碼是這樣的:
extension UIViewController: GADInterstitialDelegate {
// your reusable code
}
這只是我的方法,我認為也有其他好的方法
擴展所有受影響的視圖控制器的公共超類(可能是UIViewController
本身),然后可以在所有子類中使用代碼。
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