Add OTP editing/viewing (WIP), some more translation

app/build.gradle

@@ -43,7 +43,7 @@ dependencies {
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
     implementation "androidx.biometric:biometric:1.1.0"
-    implementation 'com.cringe_studios:CringeAuthenticatorLibrary:1.2'
+    implementation 'com.cringe_studios:CringeAuthenticatorLibrary:1.4'
     implementation 'com.google.mlkit:barcode-scanning:17.1.0'
     implementation 'com.google.code.gson:gson:2.8.9'
 

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

@@ -41,7 +41,7 @@ public class IntroActivity extends AppCompatActivity {
         binding.videoView.setOnCompletionListener(mp -> openMainActivity());
 
         binding.videoView.setOnErrorListener((MediaPlayer mp, int what, int extra) -> {
-            Toast.makeText(this, "Failed to play video", Toast.LENGTH_LONG).show();
+            Toast.makeText(this, R.string.intro_video_failed, Toast.LENGTH_LONG).show();
             openMainActivity();
             return true;
         });

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

@@ -3,14 +3,13 @@ package com.cringe_studios.cringe_authenticator;
 import static androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRONG;
 import static androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL;
 
+import android.content.res.Configuration;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
-import android.view.WindowManager;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
-import android.widget.Button;
 import android.widget.EditText;
 import android.widget.Toast;
 
@@ -26,20 +25,18 @@ import androidx.fragment.app.Fragment;
 
 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.GroupFragment;
 import com.cringe_studios.cringe_authenticator.fragment.HomeFragment;
 import com.cringe_studios.cringe_authenticator.fragment.MenuFragment;
 import com.cringe_studios.cringe_authenticator.fragment.NamedFragment;
 import com.cringe_studios.cringe_authenticator.fragment.SettingsFragment;
 import com.cringe_studios.cringe_authenticator.scanner.QRScannerContract;
-import com.cringe_studios.cringe_authenticator.util.DialogCallback;
+import com.cringe_studios.cringe_authenticator.util.DialogUtil;
 import com.cringe_studios.cringe_authenticator.util.NavigationUtil;
 import com.cringe_studios.cringe_authenticator.util.SettingsUtil;
-import com.cringe_studios.cringe_authenticator_library.OTPAlgorithm;
 import com.cringe_studios.cringe_authenticator_library.OTPType;
 
+import java.util.Locale;
 import java.util.concurrent.Executor;
 
 public class MainActivity extends AppCompatActivity {
@@ -58,7 +55,9 @@ public class MainActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
+        setLocale("de");
+
+        //getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
 
         Integer themeID = SettingsUtil.THEMES.get(SettingsUtil.getTheme(this));
         if(themeID != null) {
@@ -85,8 +84,8 @@ public class MainActivity extends AppCompatActivity {
 
         if(!recentlyUnlocked && SettingsUtil.isBiometricLock(this) && supportsBiometricAuth) {
             BiometricPrompt.PromptInfo info = new BiometricPrompt.PromptInfo.Builder()
-                    .setTitle("Cringe Authenticator")
+                    .setTitle(getString(R.string.app_name))
-                    .setSubtitle("Unlock the authenticator")
+                    .setSubtitle(getString(R.string.biometric_lock_subtitle))
                     .setAllowedAuthenticators(BIOMETRIC_STRONG | DEVICE_CREDENTIAL)
                     .build();
 
@@ -99,7 +98,7 @@ public class MainActivity extends AppCompatActivity {
             if(obj == null) return; // Cancelled
 
             if(!obj.isSuccess()) {
-                Toast.makeText(this, "Failed to scan code: " + obj.getErrorMessage(), Toast.LENGTH_LONG).show();
+                Toast.makeText(this, getString(R.string.qr_scanner_failed, obj.getErrorMessage()), Toast.LENGTH_LONG).show();
                 return;
             }
 
@@ -111,6 +110,14 @@ public class MainActivity extends AppCompatActivity {
         });
     }
 
+    private void setLocale(String lang) {
+        Locale locale = new Locale(lang);
+        Locale.setDefault(locale);
+        Configuration config = new Configuration();
+        config.locale = locale;
+        getResources().updateConfiguration(config, getResources().getDisplayMetrics());
+    }
+
     private void launchApp() {
         unlocked = true;
 
@@ -188,9 +195,9 @@ public class MainActivity extends AppCompatActivity {
         options[1] = OTPType.HOTP.getFriendlyName() + " (HOTP)";
 
         AlertDialog dialog = new AlertDialog.Builder(this)
-                .setTitle("Select Code Type")
+                .setTitle(R.string.create_totp_title)
                 .setView(binding.getRoot())
-                .setNegativeButton("Cancel", (view, which) -> {})
+                .setNegativeButton(R.string.cancel, (view, which) -> {})
                 .create();
 
         binding.codeTypes.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, options));
@@ -211,105 +218,31 @@ public class MainActivity extends AppCompatActivity {
     }
 
     private void showTOTPDialog() {
-        DialogInputCodeTotpBinding binding = DialogInputCodeTotpBinding.inflate(getLayoutInflater());
+        DialogUtil.showTOTPDialog(getLayoutInflater(), null, data -> {
-        binding.inputAlgorithm.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, OTPAlgorithm.values()));
-        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 GroupFragment)) return true;
+            if(!(fragment instanceof GroupFragment)) return;
 
-            try {
+            ((GroupFragment) fragment).addOTP(data);
-                String name = binding.inputName.getText().toString();
+        }, () -> inputCode(), false);
-                String secret = binding.inputSecret.getText().toString();
-                OTPAlgorithm algorithm = (OTPAlgorithm) binding.inputAlgorithm.getSelectedItem();
-                int digits = (int) binding.inputDigits.getSelectedItem();
-                int period = Integer.parseInt(binding.inputPeriod.getText().toString());
-                boolean checksum = binding.inputChecksum.isChecked();
-
-                OTPData data = new OTPData(name, OTPType.TOTP, secret, algorithm, digits, period, 0, checksum);
-
-                String errorMessage = data.validate();
-                if(errorMessage != null) {
-                    showErrorDialog(errorMessage);
-                    return false;
-                }
-
-                ((GroupFragment) fragment).addOTP(data);
-                return true;
-            }catch(NumberFormatException e) {
-                showErrorDialog("Invalid number entered");
-                return false;
-            }
-        });
     }
 
     private void showHOTPDialog() {
-        DialogInputCodeHotpBinding binding = DialogInputCodeHotpBinding.inflate(getLayoutInflater());
+        DialogUtil.showHOTPDialog(getLayoutInflater(), null, data -> {
-        binding.inputAlgorithm.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, OTPAlgorithm.values()));
-        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 GroupFragment)) return true;
+            if(!(fragment instanceof GroupFragment)) return;
 
-            try {
+            ((GroupFragment) fragment).addOTP(data);
-                String name = binding.inputName.getText().toString();
+        }, () -> inputCode(), false);
-                String secret = binding.inputSecret.getText().toString();
-                OTPAlgorithm algorithm = (OTPAlgorithm) binding.inputAlgorithm.getSelectedItem();
-                int digits = (int) binding.inputDigits.getSelectedItem();
-                int counter = Integer.parseInt(binding.inputCounter.getText().toString());
-                boolean checksum = binding.inputChecksum.isChecked();
-
-                OTPData data = new OTPData(name, OTPType.TOTP, secret, algorithm, digits, 0, counter, checksum);
-
-                String errorMessage = data.validate();
-                if(errorMessage != null) {
-                    showErrorDialog(errorMessage);
-                    return false;
-                }
-
-                ((GroupFragment) fragment).addOTP(data);
-                return true;
-            }catch(NumberFormatException e) {
-                showErrorDialog("Invalid number entered");
-                return false;
-            }
-        });
-    }
-
-    private void showCodeDialog(View view, DialogCallback ok) {
-        AlertDialog dialog = new AlertDialog.Builder(this)
-                .setTitle("Input Code")
-                .setView(view)
-                .setPositiveButton("Ok", (btnView, which) -> {})
-                .setNegativeButton("Cancel", (btnView, which) -> {})
-                .create();
-
-        dialog.setOnShowListener(d -> {
-            Button okButton = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
-            okButton.setOnClickListener(v -> {
-                if(ok.callback()) dialog.dismiss();
-            });
-        });
-
-        dialog.show();
-    }
-
-    private void showErrorDialog(String errorMessage) {
-        new AlertDialog.Builder(this)
-                .setTitle("Failed to add code")
-                .setMessage(errorMessage)
-                .setPositiveButton("Ok", (dialog, which) -> {})
-                .show();
     }
 
     public void addGroup(MenuItem item) {
         EditText t = new EditText(this);
         new AlertDialog.Builder(this)
-                .setTitle("New Group")
+                .setTitle(R.string.action_new_group)
                 .setView(t)
-                .setPositiveButton("Add", (view, which) -> {
+                .setPositiveButton(R.string.add, (view, which) -> {
                     if(t.getText().length() == 0) {
-                        showErrorDialog("You need to input a name");
+                        DialogUtil.showErrorDialog(this, getString(R.string.new_group_missing_title));
                         return;
                     }
 
@@ -318,7 +251,7 @@ public class MainActivity extends AppCompatActivity {
                         ((MenuFragment) frag).addGroup(t.getText().toString());
                     }
                 })
-                .setNegativeButton("Cancel", (view, which) -> {})
+                .setNegativeButton(R.string.cancel, (view, which) -> {})
                 .show();
     }
 

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

@@ -63,7 +63,11 @@ public class OTPData implements Serializable {
         return counter;
     }
 
-    public String getPin() {
+    public boolean hasChecksum() {
+        return checksum;
+    }
+
+    public String getPin() throws OTPException {
         return getOTP().getPin();
     }
 
@@ -80,15 +84,18 @@ public class OTPData implements Serializable {
         try {
             getOTP();
             return null;
-        }catch(IllegalArgumentException | OTPException e) {
+        }catch(RuntimeException e) {
             return e.getMessage() != null ? e.getMessage() : e.toString();
         }
     }
 
     private OTP getOTP() {
-        // TODO: checksum
         if(otp != null) return otp;
-        return otp = OTP.createNewOTP(type, secret, algorithm, digits, counter, period, checksum);
+        try {
+            return otp = OTP.createNewOTP(type, secret, algorithm, digits, counter, period, checksum);
+        } catch (OTPException e) {
+            throw new RuntimeException(e.getMessage(), e);
+        }
     }
 
     @NonNull

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

@@ -9,13 +9,17 @@ import android.view.ViewGroup;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
 
 import com.cringe_studios.cringe_authenticator.OTPData;
+import com.cringe_studios.cringe_authenticator.R;
 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.DialogUtil;
 import com.cringe_studios.cringe_authenticator.util.FabUtil;
 import com.cringe_studios.cringe_authenticator.util.SettingsUtil;
+import com.cringe_studios.cringe_authenticator_library.OTPException;
 import com.cringe_studios.cringe_authenticator_library.OTPType;
 
 import java.util.List;
@@ -53,7 +57,8 @@ public class GroupFragment extends NamedFragment {
 
         FabUtil.showFabs(requireActivity());
 
-        otpListAdapter = new OTPListAdapter(getContext());
+        otpListAdapter = new OTPListAdapter(requireContext(), data -> showOTPDialog(data));
+
         binding.itemList.setAdapter(otpListAdapter);
 
         loadOTPs();
@@ -69,6 +74,50 @@ public class GroupFragment extends NamedFragment {
         return binding.getRoot();
     }
 
+    private void showOTPDialog(OTPData data) {
+        new AlertDialog.Builder(requireContext())
+                .setTitle(R.string.edit_otp_title)
+                .setItems(R.array.view_edit_delete, (dialog, which) -> {
+                    switch(which) {
+                        case 0:
+                            DialogUtil.showViewCodeDialog(getLayoutInflater(), data, newData -> {
+                                otpListAdapter.replace(data, newData);
+                                saveOTPs();
+                            }, () -> showOTPDialog(data));
+                            break;
+                        case 1:
+                            DialogUtil.showEditCodeDialog(getLayoutInflater(), data, newData -> {
+                            otpListAdapter.replace(data, newData);
+                                saveOTPs();
+                            }, () -> showOTPDialog(data));
+                            break;
+                        case 2: break;
+                    }
+                })
+                .setNegativeButton(R.string.cancel, (dialog, which) -> {})
+                .show();
+
+        /*switch(data.getType()) {
+            case HOTP:
+                DialogUtil.showHOTPDialog(getLayoutInflater(), data, newData -> {
+                    otpListAdapter.replace(data, newData);
+                    saveOTPs();
+                });
+                break;
+            case TOTP:
+                DialogUtil.showTOTPDialog(getLayoutInflater(), data, newData -> {
+                    otpListAdapter.replace(data, newData);
+                    saveOTPs();
+                });
+                break;
+        }*/
+    }
+
+    private void saveOTPs() {
+        SettingsUtil.updateOTPs(requireContext(), groupName, otpListAdapter.getItems());
+        refreshCodes();
+    }
+
     private void loadOTPs() {
         List<OTPData> data = SettingsUtil.getOTPs(requireContext(), groupName);
 
@@ -86,7 +135,11 @@ public class GroupFragment extends NamedFragment {
         for(int i = 0; i < binding.itemList.getChildCount(); i++) {
             OTPListItem vh = (OTPListItem) binding.itemList.findViewHolderForAdapterPosition(i);
             if(vh == null) continue;
-            vh.getBinding().otpCode.setText(vh.getOTPData().getPin());
+            try {
+                vh.getBinding().otpCode.setText(vh.getOTPData().getPin());
+            } catch (OTPException e) {
+                DialogUtil.showErrorDialog(requireContext(), e.getMessage() == null ? "An error occurred while refreshing the code" : e.getMessage());
+            }
 
             if(vh.getOTPData().getType() == OTPType.TOTP) {
                 long timeDiff = vh.getOTPData().getNextDueTime() - System.currentTimeMillis() / 1000;

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

@@ -1,7 +1,6 @@
 package com.cringe_studios.cringe_authenticator.fragment;
 
 import android.os.Bundle;
-import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -54,7 +53,6 @@ public class MenuFragment extends NamedFragment {
 
     private void loadGroups() {
         List<String> items = SettingsUtil.getGroups(requireContext());
-        Log.i("AMOGUS", "items: " + items);
 
         for(String item : items) {
             groupListAdapter.add(item);

app/src/main/java/com/cringe_studios/cringe_authenticator/grouplist/GroupListAdapter.java

@@ -11,6 +11,7 @@ import androidx.appcompat.app.AlertDialog;
 import androidx.core.util.Consumer;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.cringe_studios.cringe_authenticator.R;
 import com.cringe_studios.cringe_authenticator.databinding.MenuItemBinding;
 
 import java.util.ArrayList;
@@ -55,10 +56,10 @@ public class GroupListAdapter extends RecyclerView.Adapter<GroupListItem> {
         holder.getBinding().button.setOnClickListener(view -> navigateToGroup.accept(group));
         holder.getBinding().button.setOnLongClickListener(view -> {
             new AlertDialog.Builder(context)
-                    .setTitle("Delete?")
+                    .setTitle(R.string.group_delete_title)
-                    .setMessage("Delete this?")
+                    .setMessage(R.string.group_delete_message)
-                    .setPositiveButton("Yes", (dialog, which) -> removeGroup.accept(group))
+                    .setPositiveButton(R.string.yes, (dialog, which) -> removeGroup.accept(group))
-                    .setNegativeButton("No", (dialog, which) -> {})
+                    .setNegativeButton(R.string.no, (dialog, which) -> {})
                     .show();
             // TODO: better method?
             return true;

app/src/main/java/com/cringe_studios/cringe_authenticator/otplist/OTPListAdapter.java

@@ -9,10 +9,13 @@ import android.view.ViewGroup;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
+import androidx.core.util.Consumer;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.cringe_studios.cringe_authenticator.OTPData;
+import com.cringe_studios.cringe_authenticator.R;
 import com.cringe_studios.cringe_authenticator.databinding.OtpCodeBinding;
+import com.cringe_studios.cringe_authenticator_library.OTPException;
 import com.cringe_studios.cringe_authenticator_library.OTPType;
 
 import java.util.ArrayList;
@@ -26,10 +29,13 @@ public class OTPListAdapter extends RecyclerView.Adapter<OTPListItem> {
 
     private Handler handler;
 
-    public OTPListAdapter(Context context) {
+    private Consumer<OTPData> showMenuCallback;
+
+    public OTPListAdapter(Context context, Consumer<OTPData> showMenuCallback) {
         this.inflater = LayoutInflater.from(context);
         this.items = new ArrayList<>();
         this.handler = new Handler(Looper.getMainLooper());
+        this.showMenuCallback = showMenuCallback;
     }
 
     @NonNull
@@ -52,11 +58,23 @@ public class OTPListAdapter extends RecyclerView.Adapter<OTPListItem> {
 
             // Click delay for HOTP
             view.setClickable(false);
-            Toast.makeText(view.getContext(), "Generated new code", Toast.LENGTH_LONG).show();
+            Toast.makeText(view.getContext(), R.string.hotp_generated_new_code, Toast.LENGTH_SHORT).show();
             data.incrementCounter();
-            holder.getBinding().otpCode.setText(data.getPin());
+
+            try {
+                holder.getBinding().otpCode.setText(data.getPin());
+            }catch(OTPException e) {
+                // TODO: show user an error message
+                return;
+            }
+
             handler.postDelayed(() -> view.setClickable(true), 5000);
         });
+
+        holder.getBinding().getRoot().setOnLongClickListener(view -> {
+            showMenuCallback.accept(holder.getOTPData());
+            return true;
+        });
     }
 
     @Override
@@ -64,11 +82,22 @@ public class OTPListAdapter extends RecyclerView.Adapter<OTPListItem> {
         return items.size();
     }
 
+    public List<OTPData> getItems() {
+        return items;
+    }
+
     public void add(OTPData data) {
         items.add(data);
         notifyItemInserted(items.size() - 1);
     }
 
+    public void replace(OTPData oldData, OTPData newData) {
+        int index = items.indexOf(oldData);
+        if(index == -1) return;
+        items.set(index, newData);
+        notifyItemChanged(index);
+    }
+
     public void remove(OTPData data) {
         int index = items.indexOf(data);
         if(index == -1) return;

app/src/main/java/com/cringe_studios/cringe_authenticator/urihandler/URIHandlerActivity.java

@@ -9,6 +9,7 @@ import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 
 import com.cringe_studios.cringe_authenticator.OTPData;
+import com.cringe_studios.cringe_authenticator.R;
 import com.cringe_studios.cringe_authenticator.util.OTPParser;
 
 public class URIHandlerActivity extends AppCompatActivity {
@@ -30,9 +31,9 @@ public class URIHandlerActivity extends AppCompatActivity {
             finish();
         }catch(IllegalArgumentException e) {
             AlertDialog dialog = new AlertDialog.Builder(this)
-                    .setTitle("Failed to add code")
+                    .setTitle(R.string.uri_handler_failed_title)
                     .setMessage(e.getMessage())
-                    .setPositiveButton("Ok", (d, which) -> finish())
+                    .setPositiveButton(R.string.ok, (d, which) -> finish())
                     .create();
 
             dialog.setOnDismissListener(d -> finish());

app/src/main/java/com/cringe_studios/cringe_authenticator/util/DialogUtil.java

@@ -0,0 +1,175 @@
+package com.cringe_studios.cringe_authenticator.util;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AlertDialog;
+import androidx.core.util.Consumer;
+
+import com.cringe_studios.cringe_authenticator.OTPData;
+import com.cringe_studios.cringe_authenticator.R;
+import com.cringe_studios.cringe_authenticator.databinding.DialogInputCodeHotpBinding;
+import com.cringe_studios.cringe_authenticator.databinding.DialogInputCodeTotpBinding;
+import com.cringe_studios.cringe_authenticator_library.OTPAlgorithm;
+import com.cringe_studios.cringe_authenticator_library.OTPType;
+
+import java.util.Arrays;
+
+public class DialogUtil {
+
+    private static final Integer[] DIGITS = new Integer[]{6, 7, 8, 9, 10, 11, 12};
+
+    private static void showCodeDialog(Context context, View view, DialogCallback ok, Runnable back) {
+        AlertDialog dialog = new AlertDialog.Builder(context)
+                .setTitle(R.string.code_input_title)
+                .setView(view)
+                .setPositiveButton(R.string.ok, (btnView, which) -> {})
+                .setNeutralButton(R.string.back, (btnView, which) -> back.run())
+                .setNegativeButton(R.string.cancel, (btnView, which) -> {})
+                .create();
+
+        //dialog.getWindow().setBackgroundDrawableResource(R.drawable.button_themed); TODO: dialog style
+
+        dialog.setOnShowListener(d -> {
+            Button okButton = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
+            okButton.setOnClickListener(v -> {
+                if(ok.callback()) dialog.dismiss();
+            });
+        });
+
+        dialog.show();
+    }
+
+    public static void showErrorDialog(Context context, String errorMessage) {
+        new AlertDialog.Builder(context)
+                .setTitle(R.string.failed_title)
+                .setMessage(errorMessage)
+                .setPositiveButton(R.string.ok, (dialog, which) -> {})
+                .show();
+    }
+
+    public static void showTOTPDialog(LayoutInflater inflater, OTPData initialData, Consumer<OTPData> callback, Runnable back, boolean view) {
+        Context context = inflater.getContext();
+        DialogInputCodeTotpBinding binding = DialogInputCodeTotpBinding.inflate(inflater);
+
+        binding.inputAlgorithm.setAdapter(new ArrayAdapter<>(context, android.R.layout.simple_list_item_1, OTPAlgorithm.values()));
+        binding.inputAlgorithm.setEnabled(!view);
+
+        binding.inputDigits.setAdapter(new ArrayAdapter<>(context, android.R.layout.simple_list_item_1, DIGITS));
+        binding.inputDigits.setEnabled(!view);
+
+        binding.inputName.setEnabled(!view);
+        binding.inputSecret.setEnabled(!view);
+        binding.inputPeriod.setEnabled(!view);
+        binding.inputChecksum.setEnabled(!view);
+
+        if(initialData != null) {
+            binding.inputName.setText(initialData.getName());
+            binding.inputSecret.setText(initialData.getSecret());
+            binding.inputAlgorithm.setSelection(initialData.getAlgorithm().ordinal());
+
+            int index = Arrays.asList(DIGITS).indexOf(initialData.getDigits());
+            if(index != -1) binding.inputDigits.setSelection(index);
+
+            binding.inputPeriod.setText(String.valueOf(initialData.getPeriod()));
+            binding.inputChecksum.setChecked(initialData.hasChecksum());
+        }
+
+        showCodeDialog(context, binding.getRoot(), () -> {
+            try {
+                String name = binding.inputName.getText().toString();
+                String secret = binding.inputSecret.getText().toString();
+                OTPAlgorithm algorithm = (OTPAlgorithm) binding.inputAlgorithm.getSelectedItem();
+                int digits = (int) binding.inputDigits.getSelectedItem();
+                int period = Integer.parseInt(binding.inputPeriod.getText().toString());
+                boolean checksum = binding.inputChecksum.isChecked();
+
+                OTPData data = new OTPData(name, OTPType.TOTP, secret, algorithm, digits, period, 0, checksum);
+
+                String errorMessage = data.validate();
+                if(errorMessage != null) {
+                    showErrorDialog(context, errorMessage);
+                    return false;
+                }
+
+                callback.accept(data);
+                return true;
+            }catch(NumberFormatException e) {
+                showErrorDialog(context, context.getString(R.string.input_code_invalid_number));
+                return false;
+            }
+        }, back);
+    }
+
+    public static void showHOTPDialog(LayoutInflater inflater, OTPData initialData, Consumer<OTPData> callback, Runnable back, boolean view) {
+        Context context = inflater.getContext();
+        DialogInputCodeHotpBinding binding = DialogInputCodeHotpBinding.inflate(inflater);
+
+        binding.inputAlgorithm.setAdapter(new ArrayAdapter<>(context, android.R.layout.simple_list_item_1, OTPAlgorithm.values()));
+        binding.inputAlgorithm.setEnabled(!view);
+
+        binding.inputDigits.setAdapter(new ArrayAdapter<>(context, android.R.layout.simple_list_item_1, DIGITS));
+        binding.inputDigits.setEnabled(!view);
+
+        binding.inputName.setEnabled(!view);
+        binding.inputSecret.setEnabled(!view);
+        binding.inputCounter.setEnabled(!view);
+        binding.inputChecksum.setEnabled(!view);
+
+        if(initialData != null) {
+            binding.inputName.setText(initialData.getName());
+            binding.inputSecret.setText(initialData.getSecret());
+            binding.inputAlgorithm.setSelection(initialData.getAlgorithm().ordinal());
+
+            int index = Arrays.asList(DIGITS).indexOf(initialData.getDigits());
+            if(index != -1) binding.inputDigits.setSelection(index);
+
+            binding.inputCounter.setText(String.valueOf(initialData.getCounter()));
+            binding.inputChecksum.setChecked(initialData.hasChecksum());
+        }
+
+        showCodeDialog(context, binding.getRoot(), () -> {
+            try {
+                String name = binding.inputName.getText().toString();
+                String secret = binding.inputSecret.getText().toString();
+                OTPAlgorithm algorithm = (OTPAlgorithm) binding.inputAlgorithm.getSelectedItem();
+                int digits = (int) binding.inputDigits.getSelectedItem();
+                int counter = Integer.parseInt(binding.inputCounter.getText().toString());
+                boolean checksum = binding.inputChecksum.isChecked();
+
+                OTPData data = new OTPData(name, OTPType.TOTP, secret, algorithm, digits, 0, counter, checksum);
+
+                String errorMessage = data.validate();
+                if(errorMessage != null) {
+                    showErrorDialog(context, errorMessage);
+                    return false;
+                }
+
+                callback.accept(data);
+                return true;
+            }catch(NumberFormatException e) {
+                showErrorDialog(context, context.getString(R.string.input_code_invalid_number));
+                return false;
+            }
+        }, back);
+    }
+
+    public static void showViewCodeDialog(LayoutInflater inflater, @NonNull OTPData initialData, Consumer<OTPData> callback, Runnable back) {
+        switch(initialData.getType()) {
+            case HOTP: showHOTPDialog(inflater, initialData, callback, back, true); break;
+            case TOTP: showTOTPDialog(inflater, initialData, callback, back, true); break;
+        }
+    }
+
+    public static void showEditCodeDialog(LayoutInflater inflater, @NonNull OTPData initialData, Consumer<OTPData> callback, Runnable back) {
+        switch(initialData.getType()) {
+            case HOTP: showHOTPDialog(inflater, initialData, callback, back, false); break;
+            case TOTP: showTOTPDialog(inflater, initialData, callback, back, false); break;
+        }
+    }
+
+}

app/src/main/java/com/cringe_studios/cringe_authenticator/util/SettingsUtil.java

@@ -76,6 +76,12 @@ public class SettingsUtil {
                 .apply();
     }
 
+    public static void updateOTPs(Context ctx, String group, List<OTPData> otps) {
+        ctx.getSharedPreferences(GROUPS_PREFS_NAME, Context.MODE_PRIVATE).edit()
+                .putString("group." + group, GSON.toJson(otps.toArray(new OTPData[0])))
+                .apply();
+    }
+
     private static void deleteOTPs(Context ctx, String group) {
         ctx.getSharedPreferences(GROUPS_PREFS_NAME, Context.MODE_PRIVATE).edit()
                 .remove("group." + group)

app/src/main/res/menu/menu_groups.xml

@@ -3,15 +3,15 @@
     xmlns:tools="http://schemas.android.com/tools"
     tools:context="com.cringe_studios.cringe_authenticator.MainActivity">
     <item
-        android:id="@+id/action_code"
+        android:id="@+id/action_new_group"
         android:orderInCategory="100"
-        android:title="New Group"
+        android:title="@string/action_new_group"
         app:showAsAction="never"
         android:onClick="addGroup" />
     <item
         android:id="@+id/action_settings"
         android:orderInCategory="100"
-        android:title="Settings"
+        android:title="@string/action_settings"
         app:showAsAction="never"
         android:onClick="openSettings" />
 </menu>

app/src/main/res/values-de-rDE/strings.xml

@@ -4,16 +4,40 @@
     <string name="action_settings">Einstellungen</string>
     <string name="next">Weiter</string>
     <string name="previous">Zurück</string>
-    <string name="edit">Editieren</string>
+    <string name="edit">Bearbeiten</string>
     <string name="choose_language">Sprachauswahl</string>
     <string name="cancel">Abbrechen</string>
-    <string name="add">hinzufügen</string>
+    <string name="add">Hinzufügen</string>
-    <string name="no">nein</string>
+    <string name="no">Nein</string>
-    <string name="yes">ja</string>
+    <string name="yes">Ja</string>
-    <string name="invalid_input">ungültige Eingabe</string>
+    <string name="invalid_input">Ungültige Eingabe</string>
-    <string name="about">über</string>
+    <string name="about">Über</string>
-    <string name="haptic_feedback">vibration</string>
+    <string name="haptic_feedback">Vibration</string>
     <string name="reset_app">App zurücksetzen</string>
-    <string name="import_export">importieren / exportieren</string>
+    <string name="import_export">Importieren / Exportieren</string>
     <string name="language">Sprache</string>
+    <string name="biometric_lock_subtitle">Entsperre den Authentifikator</string>
+    <string name="create_totp_title">Wähle den Code-Typ</string>
+    <string name="action_new_group">Neue Gruppe</string>
+    <string name="new_group_missing_title">Du musst einen Namen eingeben</string>
+    <string name="qr_scanner_failed">Scannen des Codes fehlgeschlagen: %s</string>
+    <string name="intro_video_failed">Abspielen des Videos fehlgeschlagen</string>
+    <string name="edit_otp_title">OTP bearbeiten</string>
+    <string name="group_delete_title">Löschen?</string>
+    <string name="group_delete_message">Gruppe löschen?</string>
+    <string name="hotp_generated_new_code">Neuen Code generiert</string>
+    <string name="uri_handler_failed_title">Hinzufügen des Codes fehlgeschlagen</string>
+    <string name="code_input_title">Code eingeben</string>
+    <string name="failed_title">Aktion fehlgeschlagen</string>
+    <string name="input_code_invalid_number">Ungültige Zahl</string>
+    <string name="back">Zurück</string>
+    <string-array name="view_edit_delete">
+        <item>Anzeigen</item>
+        <item>Bearbeiten</item>
+        <item>Löschen</item>
+    </string-array>
+    <string-array name="rename_delete">
+        <item>Umbenennen</item>
+        <item>Löschen</item>
+    </string-array>
 </resources>

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

@@ -44,16 +44,40 @@
         vestibulum. Fusce dictum libero quis erat maximus, vitae volutpat diam dignissim.
     </string>
     <string name="edit">Edit</string>
-    <string name="choose_language">choose Language</string>
+    <string name="choose_language">Choose Language</string>
-    <string name="cancel">cancel</string>
+    <string name="cancel">Cancel</string>
-    <string name="add">add</string>
+    <string name="add">Add</string>
-    <string name="ok" translatable="false">Ok</string>
+    <string name="ok" translatable="false">OK</string>
-    <string name="no">no</string>
+    <string name="no">No</string>
-    <string name="yes">yes</string>
+    <string name="yes">Yes</string>
-    <string name="invalid_input">invalid input</string>
+    <string name="invalid_input">Invalid Input</string>
-    <string name="about">about</string>
+    <string name="about">About</string>
-    <string name="haptic_feedback">haptic feedback</string>
+    <string name="haptic_feedback">Haptic Feedback</string>
-    <string name="reset_app">reset app</string>
+    <string name="reset_app">Reset App</string>
-    <string name="import_export">import / export</string>
+    <string name="import_export">Import / Export</string>
-    <string name="language">language</string>
+    <string name="language">Language</string>
+    <string name="biometric_lock_subtitle">Unlock the authenticator</string>
+    <string name="create_totp_title">Select Code Type</string>
+    <string name="action_new_group">New Group</string>
+    <string name="new_group_missing_title">You need to input a name</string>
+    <string name="qr_scanner_failed">Failed to scan code: %s</string>
+    <string name="intro_video_failed">Failed to play video</string>
+    <string name="edit_otp_title">Edit OTP</string>
+    <string name="group_delete_title">Delete?</string>
+    <string name="group_delete_message">Delete this?</string>
+    <string name="hotp_generated_new_code">Generated new code</string>
+    <string name="uri_handler_failed_title">Failed to add code</string>
+    <string name="code_input_title">Input Code</string>
+    <string name="failed_title">Action failed</string>
+    <string name="input_code_invalid_number">Invalid number entered</string>
+    <string name="back">Back</string>
+    <string-array name="view_edit_delete">
+        <item>View</item>
+        <item>Edit</item>
+        <item>Delete</item>
+    </string-array>
+    <string-array name="rename_delete">
+        <item>Rename</item>
+        <item>Delete</item>
+    </string-array>
 </resources>