如何在黑色透明方块中创建活动指示器加载警报？

Question

我想在下面的屏幕截图中创建一个提醒:

Answer 1

它是第三方

pod'MBProgressHUD','〜> 0.9.2'

在豆荚和

let loadingNotification = MBProgressHUD.showHUDAddedTo(self.view,animated:true)loadingNotification.labelText ="Loding ..."

MBProgressHUD.hideAllHUDsForView(self.view,animated:true)

https://www.cocoacontrols.com/controls/mbprogresshud https://github.com/jdg/MBProgressHUD