Optional password fallback

app/src/main/java/sushi/hardcore/droidfs/VolumeOpener.kt

@@ -80,7 +80,7 @@ class VolumeOpener(
                             }
                             override fun onPasswordHashSaved() {}
                             override fun onFailed(pending: Boolean) {
-                                if (!pending) {
+                                if (!pending && sharedPrefs.getBoolean("passwordFallback", true)) {
                                     askForPassword(volume, isVolumeSaved, callbacks)
                                 }
                             }

app/src/main/res/drawable/icon_password.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="?attr/colorAccent" android:pathData="M2,17h20v2H2V17zM3.15,12.95L4,11.47l0.85,1.48l1.3,-0.75L5.3,10.72H7v-1.5H5.3l0.85,-1.47L4.85,7L4,8.47L3.15,7l-1.3,0.75L2.7,9.22H1v1.5h1.7L1.85,12.2L3.15,12.95zM9.85,12.2l1.3,0.75L12,11.47l0.85,1.48l1.3,-0.75l-0.85,-1.48H15v-1.5h-1.7l0.85,-1.47L12.85,7L12,8.47L11.15,7l-1.3,0.75l0.85,1.47H9v1.5h1.7L9.85,12.2zM23,9.22h-1.7l0.85,-1.47L20.85,7L20,8.47L19.15,7l-1.3,0.75l0.85,1.47H17v1.5h1.7l-0.85,1.48l1.3,0.75L20,11.47l0.85,1.48l1.3,-0.75l-0.85,-1.48H23V9.22z"/>
+</vector>

app/src/main/res/values/strings.xml

@@ -258,4 +258,6 @@
     <string name="theme_color">Theme color</string>
     <string name="theme_color_summary">Change app theme color</string>
     <string name="black_theme">Black theme</string>
+    <string name="password_fallback">Fallback to password</string>
+    <string name="password_fallback_summary">Prompt for password when fingerprint authentication is cancelled</string>
 </resources>

app/src/main/res/xml/root_preferences.xml

@@ -74,6 +74,13 @@
             android:defaultValue="false"
             android:icon="@drawable/icon_mod"/>
 
+        <SwitchPreferenceCompat
+            android:title="@string/password_fallback"
+            android:summary="@string/password_fallback_summary"
+            android:key="passwordFallback"
+            android:defaultValue="true"
+            android:icon="@drawable/icon_password"/>
+
         <SwitchPreferenceCompat
             android:title="@string/pin_passwords_title"
             android:summary="@string/pin_passwords_summary"