CWA-164 | added biometric authentication

android/app/src/main/AndroidManifest.xml

@@ -7,6 +7,7 @@
          FlutterApplication and put your custom class here. -->
 
     <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.USE_FINGERPRINT"/>
     
     <application
         android:name="io.flutter.app.FlutterApplication"

android/app/src/main/java/com/cakewallet/cake_wallet/MainActivity.java

@@ -1,10 +1,10 @@
 package com.cakewallet.cake_wallet;
 
 import android.os.Bundle;
-import io.flutter.app.FlutterActivity;
+import io.flutter.app.FlutterFragmentActivity;
 import io.flutter.plugins.GeneratedPluginRegistrant;
 
-public class MainActivity extends FlutterActivity {
+public class MainActivity extends FlutterFragmentActivity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);