initial commit

Author: pouyamaroufi

AppDelegate.swift

@@ -0,0 +1,29 @@
+import UIKit
+import Flutter
+
+
+@UIApplicationMain
+@objc class AppDelegate: FlutterAppDelegate {
+  override func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
+    self.window.makeSecure() // + add this line
+    GeneratedPluginRegistrant.register(with: self)
+    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+  }
+}
+
+// +  add this section
+
+extension UIWindow {
+func makeSecure() {
+    let field = UITextField()
+    field.isSecureTextEntry = true
+    self.addSubview(field)
+    field.centerYAnchor.constraint(equalTo: self.centerYAnchor).isActive = true
+    field.centerXAnchor.constraint(equalTo: self.centerXAnchor).isActive = true
+    self.layer.superlayer?.addSublayer(field.layer)
+    field.layer.sublayers?.first?.addSublayer(self.layer)
+  }
+}

MainActivity.kt

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+package com.example.test // replace your packageName
+
+import android.view.WindowManager.LayoutParams
+import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.engine.FlutterEngine
+
+class MainActivity: FlutterActivity() {
+  override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
+    window.addFlags(LayoutParams.FLAG_SECURE)
+    super.configureFlutterEngine(flutterEngine)
+  }
+}