feat: ability to delete keystores.

assets/i18n/en_US.json

@@ -136,7 +136,10 @@
         "sentryHint": "Send anonymous logs to help us improve ReVanced Manager",
         "firebaseCrashlyticsLabel": "Firebase Crashlytics",
         "firebaseCrashlyticsHint": "Send anonymous crash reports to help us improve ReVanced Manager",
-        "restartAppForChanges": "Restart the app to apply changes"
+        "restartAppForChanges": "Restart the app to apply changes",
+        "deleteKeystoreLabel": "Delete keystore",
+        "deleteKeystoreHint": "Delete the keystore used to sign the app",
+        "deletedKeystore": "Keystore deleted"
     },
     "appInfoView": {
         "widgetTitle": "App Info",

lib/services/manager_api.dart

@@ -98,6 +98,14 @@ class ManagerAPI {
     await _prefs.setBool('crashlyticsEnabled', value);
   }
 
+  Future<void> deleteKeystore() async {
+    final File keystore = File(
+        '/sdcard/Android/data/app.revanced.manager.flutter/files/revanced-keystore.keystore');
+    if (await keystore.exists()) {
+      await keystore.delete();
+    }
+  }
+
   List<PatchedApplication> getPatchedApps() {
     List<String> apps = _prefs.getStringList('patchedApps') ?? [];
     return apps.map((a) => PatchedApplication.fromJson(jsonDecode(a))).toList();

lib/ui/views/settings/settings_view.dart

@@ -136,6 +136,22 @@ class SettingsView extends StatelessWidget {
                         subtitle: 'settingsView.sourcesLabelHint',
                         onTap: () => model.showSourcesDialog(context),
                       ),
+                      ListTile(
+                        contentPadding:
+                            const EdgeInsets.symmetric(horizontal: 20.0),
+                        title: I18nText(
+                          'settingsView.deleteKeystoreLabel',
+                          child: const Text(
+                            '',
+                            style: TextStyle(
+                              fontSize: 20,
+                              fontWeight: FontWeight.w500,
+                            ),
+                          ),
+                        ),
+                        subtitle: I18nText('settingsView.deleteKeystoreHint'),
+                        onTap: () => model.deleteKeystore,
+                      ),
                     ],
                   ),
                   _settingsDivider,

lib/ui/views/settings/settings_viewmodel.dart

@@ -337,6 +337,12 @@ class SettingsViewModel extends BaseViewModel {
     notifyListeners();
   }
 
+  void deleteKeystore() {
+    _managerAPI.deleteKeystore();
+    _toast.showBottom('settingsView.deletedKeystore');
+    notifyListeners();
+  }
+
   Future<int> getSdkVersion() async {
     AndroidDeviceInfo info = await DeviceInfoPlugin().androidInfo;
     return info.version.sdkInt ?? -1;