iOS 防止截屏錄屏

通過官方 api 無法實現(xiàn)
這里通過 UITextField.isSecureTextEntry 奇技淫巧, 截屏?xí)r系統(tǒng)自動隱藏內(nèi)容實現(xiàn)

通知

• UIApplication.userDidTakeScreenshotNotification 截屏通知 (截圖已經(jīng)保存相冊)
• UIScreen.capturedDidChangeNotification 錄屏通知

密碼框

let textfeild = UITextField()
textfeild.isSecureTextEntry = true
self.view.addSubview(textfeild)

截屏/錄屏 一勞永逸

1. 設(shè)置 UITextField.isSecureTextEntry
2. 將私密內(nèi)容放在 UITextField 中
3. 截圖后 scrollView 被隱藏

// textfeild
let textfeild = UITextField(frame: self.view.bounds)
textfeild.isSecureTextEntry = true
self.view.addSubview(textfeild)

// scrollView
if let view = textfeild.subviews.first {
    view.isUserInteractionEnabled = true
    view.addSubview(scrollView)
}else{
    textfeild.addSubview(scrollView)
}

// other ...