Fix biometric lock on devices without biometric data

app/src/main/java/com/cringe_studios/cringe_authenticator/MainActivity.java

@@ -4,7 +4,6 @@ import static androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRON
 import static androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL;
 
 import android.os.Bundle;
-import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
@@ -19,6 +18,7 @@ import androidx.activity.result.ActivityResultLauncher;
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.biometric.BiometricManager;
 import androidx.biometric.BiometricPrompt;
 import androidx.core.content.ContextCompat;
 import androidx.fragment.app.Fragment;
@@ -27,7 +27,7 @@ import com.cringe_studios.cringe_authenticator.databinding.ActivityMainBinding;
 import com.cringe_studios.cringe_authenticator.databinding.DialogInputCodeChoiceBinding;
 import com.cringe_studios.cringe_authenticator.databinding.DialogInputCodeHotpBinding;
 import com.cringe_studios.cringe_authenticator.databinding.DialogInputCodeTotpBinding;
-import com.cringe_studios.cringe_authenticator.fragment.DynamicFragment;
+import com.cringe_studios.cringe_authenticator.fragment.GroupFragment;
 import com.cringe_studios.cringe_authenticator.fragment.HomeFragment;
 import com.cringe_studios.cringe_authenticator.fragment.MenuFragment;
 import com.cringe_studios.cringe_authenticator.fragment.SettingsFragment;
@@ -72,7 +72,7 @@ public class MainActivity extends AppCompatActivity {
             }
         });
 
-        if(SettingsUtil.isBiometricLock(this)) {
+        if(SettingsUtil.isBiometricLock(this) && BiometricManager.from(this).canAuthenticate(BIOMETRIC_STRONG | DEVICE_CREDENTIAL) == BiometricManager.BIOMETRIC_SUCCESS) {
             BiometricPrompt.PromptInfo info = new BiometricPrompt.PromptInfo.Builder()
                     .setTitle("Cringe Authenticator")
                     .setSubtitle("Unlock the authenticator")
@@ -93,11 +93,10 @@ public class MainActivity extends AppCompatActivity {
             }
 
             Fragment fragment = NavigationUtil.getCurrentFragment(this);
-            if(fragment instanceof DynamicFragment) {
+            if(fragment instanceof GroupFragment) {
-                DynamicFragment frag = (DynamicFragment) fragment;
+                GroupFragment frag = (GroupFragment) fragment;
                 frag.addOTP(obj.getData());
             }
-            Log.i("AMOGUS", "Actually got something bruh" + obj);
         });
     }
 
@@ -198,7 +197,7 @@ public class MainActivity extends AppCompatActivity {
         binding.inputDigits.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, new Integer[]{6, 7, 8, 9, 10, 11, 12}));
         showCodeDialog(binding.getRoot(), () -> {
             Fragment fragment = NavigationUtil.getCurrentFragment(this);
-            if(!(fragment instanceof DynamicFragment)) return true;
+            if(!(fragment instanceof GroupFragment)) return true;
 
             try {
                 String name = binding.inputName.getText().toString();
@@ -216,7 +215,7 @@ public class MainActivity extends AppCompatActivity {
                     return false;
                 }
 
-                ((DynamicFragment) fragment).addOTP(data);
+                ((GroupFragment) fragment).addOTP(data);
                 return true;
             }catch(NumberFormatException e) {
                 showErrorDialog("Invalid number entered");
@@ -231,7 +230,7 @@ public class MainActivity extends AppCompatActivity {
         binding.inputDigits.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, new Integer[]{6, 7, 8, 9, 10, 11, 12}));
         showCodeDialog(binding.getRoot(), () -> {
             Fragment fragment = NavigationUtil.getCurrentFragment(this);
-            if(!(fragment instanceof DynamicFragment)) return true;
+            if(!(fragment instanceof GroupFragment)) return true;
 
             try {
                 String name = binding.inputName.getText().toString();
@@ -249,7 +248,7 @@ public class MainActivity extends AppCompatActivity {
                     return false;
                 }
 
-                ((DynamicFragment) fragment).addOTP(data);
+                ((GroupFragment) fragment).addOTP(data);
                 return true;
             }catch(NumberFormatException e) {
                 showErrorDialog("Invalid number entered");

app/src/main/java/com/cringe_studios/cringe_authenticator/fragment/GroupFragment.java

@@ -11,7 +11,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.cringe_studios.cringe_authenticator.OTPData;
-import com.cringe_studios.cringe_authenticator.databinding.FragmentDynamicBinding;
+import com.cringe_studios.cringe_authenticator.databinding.FragmentGroupBinding;
 import com.cringe_studios.cringe_authenticator.otplist.OTPListAdapter;
 import com.cringe_studios.cringe_authenticator.otplist.OTPListItem;
 import com.cringe_studios.cringe_authenticator.util.FabUtil;
@@ -20,13 +20,13 @@ import com.cringe_studios.cringe_authenticator_library.OTPType;
 
 import java.util.List;
 
-public class DynamicFragment extends NamedFragment {
+public class GroupFragment extends NamedFragment {
 
     public static final String BUNDLE_GROUP = "group";
 
     private String groupName;
 
-    private FragmentDynamicBinding binding;
+    private FragmentGroupBinding binding;
 
     private Handler handler;
 
@@ -47,9 +47,9 @@ public class DynamicFragment extends NamedFragment {
     @Nullable
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        binding = FragmentDynamicBinding.inflate(inflater, container, false);
+        binding = FragmentGroupBinding.inflate(inflater, container, false);
 
-        groupName = requireArguments().getString(DynamicFragment.BUNDLE_GROUP);
+        groupName = requireArguments().getString(GroupFragment.BUNDLE_GROUP);
 
         FabUtil.showFabs(requireActivity());
 

app/src/main/java/com/cringe_studios/cringe_authenticator/fragment/MenuFragment.java

@@ -35,8 +35,8 @@ public class MenuFragment extends NamedFragment {
 
         groupListAdapter = new GroupListAdapter(requireContext(), group -> {
             Bundle bundle = new Bundle();
-            bundle.putString(DynamicFragment.BUNDLE_GROUP, group);
+            bundle.putString(GroupFragment.BUNDLE_GROUP, group);
-            NavigationUtil.navigate(this, DynamicFragment.class, bundle);
+            NavigationUtil.navigate(this, GroupFragment.class, bundle);
         }, this::removeGroup);
 
         binding.menuItems.setAdapter(groupListAdapter);

app/src/main/java/com/cringe_studios/cringe_authenticator/fragment/SettingsFragment.java

@@ -1,5 +1,8 @@
 package com.cringe_studios.cringe_authenticator.fragment;
 
+import static androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRONG;
+import static androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL;
+
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -9,6 +12,7 @@ import android.widget.ArrayAdapter;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.biometric.BiometricManager;
 
 import com.cringe_studios.cringe_authenticator.databinding.FragmentSettingsBinding;
 import com.cringe_studios.cringe_authenticator.util.FabUtil;
@@ -31,8 +35,14 @@ public class SettingsFragment extends NamedFragment {
         binding.settingsEnableIntroVideo.setChecked(SettingsUtil.isIntroVideoEnabled(requireContext()));
         binding.settingsEnableIntroVideo.setOnCheckedChangeListener((view, checked) -> SettingsUtil.setEnableIntroVideo(requireContext(), checked));
 
-        binding.settingsBiometricLock.setChecked(SettingsUtil.isBiometricLock(requireContext()));
+        if(BiometricManager.from(requireContext()).canAuthenticate(BIOMETRIC_STRONG | DEVICE_CREDENTIAL) == BiometricManager.BIOMETRIC_SUCCESS) {
-        binding.settingsBiometricLock.setOnCheckedChangeListener((view, checked) -> SettingsUtil.setBiometricLock(requireContext(), checked));
+            binding.settingsBiometricLock.setChecked(SettingsUtil.isBiometricLock(requireContext()));
+            binding.settingsBiometricLock.setOnCheckedChangeListener((view, checked) -> SettingsUtil.setBiometricLock(requireContext(), checked));
+        }else {
+            binding.settingsBiometricLock.setChecked(false);
+            binding.settingsBiometricLock.setEnabled(false);
+            // TODO: inform user
+        }
 
         binding.settingsTheme.setAdapter(new ArrayAdapter<>(getContext(), android.R.layout.simple_list_item_1, SettingsUtil.THEME_NAMES.toArray(new String[0])));
         binding.settingsTheme.setSelection(SettingsUtil.THEME_NAMES.indexOf(SettingsUtil.getTheme(requireContext())));

app/src/main/res/layout/fragment_group.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".fragment.DynamicFragment">
+    tools:context=".fragment.GroupFragment">
 
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"

app/src/main/res/navigation/nav_graph.xml

@@ -25,8 +25,8 @@
     </fragment>
     <fragment
         android:id="@+id/DynamicFragment"
-        android:name="com.cringe_studios.cringe_authenticator.fragment.DynamicFragment"
+        android:name="com.cringe_studios.cringe_authenticator.fragment.GroupFragment"
         android:label="Dynamic"
-        tools:layout="@layout/fragment_dynamic">
+        tools:layout="@layout/fragment_group">
     </fragment>
 </navigation>