Probably fixed

lib/providers/apps_provider.dart

@@ -547,8 +547,7 @@ class AppsProvider with ChangeNotifier {
         !(await canDowngradeApps())) {
       throw DowngradeError();
     }
-    if (needsBGWorkaround &&
-        settingsProvider.installMethod == InstallMethodSettings.normal) {
+    if (needsBGWorkaround) {
       // The below 'await' will never return if we are in a background process
       // To work around this, we should assume the install will be successful
       // So we update the app's installed version first as we will never get to the later code
@@ -560,20 +559,14 @@ class AppsProvider with ChangeNotifier {
           attemptToCorrectInstallStatus: false);
     }
     int? code;
-    switch (settingsProvider.installMethod) {
-      case InstallMethodSettings.normal:
-        code = await AndroidPackageInstaller.installApk(
-            apkFilePath: file.file.path);
-      case InstallMethodSettings.shizuku:
-        code = (await NativeFeatures.installWithShizuku(
-                apkFileUri: file.file.uri.toString()))
-            ? 0
-            : 1;
-      case InstallMethodSettings.root:
-        code =
-            (await NativeFeatures.installWithRoot(apkFilePath: file.file.path))
-                ? 0
-                : 1;
+    if (!settingsProvider.useShizuku) {
+      code = await AndroidPackageInstaller.installApk(
+          apkFilePath: file.file.path);
+    } else {
+      code = (await NativeFeatures.installWithShizuku(
+          apkFileUri: file.file.uri.toString()))
+          ? 0
+          : 1;
     }
     bool installed = false;
     if (code != null && code != 0 && code != 3) {
@@ -732,25 +725,19 @@ class AppsProvider with ChangeNotifier {
         }
         var appId = downloadedFile?.appId ?? downloadedDir!.appId;
         bool willBeSilent = await canInstallSilently(apps[appId]!.app);
-        switch (settingsProvider.installMethod) {
-          case InstallMethodSettings.normal:
-            if (!(await settingsProvider.getInstallPermission(
-                enforce: false))) {
-              throw ObtainiumError(tr('cancelled'));
-            }
-          case InstallMethodSettings.shizuku:
-            int code = await NativeFeatures.checkPermissionShizuku();
-            if (code == -1) {
-              throw ObtainiumError(tr('shizukuBinderNotFound'));
-            } else if (code == 0) {
-              throw ObtainiumError(tr('cancelled'));
-            }
-          case InstallMethodSettings.root:
-            if (!(await NativeFeatures.checkPermissionRoot())) {
-              throw ObtainiumError(tr('cancelled'));
-            }
+        if (!settingsProvider.useShizuku) {
+          if (!(await settingsProvider.getInstallPermission(enforce: false))) {
+            throw ObtainiumError(tr('cancelled'));
+          }
+        } else {
+          int code = await NativeFeatures.checkPermissionShizuku();
+          if (code == 0) {
+            throw ObtainiumError(tr('cancelled'));
+          } else if (code == -1) {
+            throw ObtainiumError(tr('shizukuBinderNotFound'));
+          }
         }
-        if (!willBeSilent && context != null) {
+        if (!willBeSilent && context != null && !settingsProvider.useShizuku) {
           // ignore: use_build_context_synchronously
           await waitForUserToReturnToForeground(context);
         }

lib/providers/native_provider.dart

@@ -59,17 +59,8 @@ class NativeFeatures {
     return res;
   }
 
-  static Future<bool> checkPermissionRoot() async {
-    return await _channel.invokeMethod('checkPermissionRoot');
-  }
-
   static Future<bool> installWithShizuku({required String apkFileUri}) async {
     return await _channel.invokeMethod(
         'installWithShizuku', {'apkFileUri': apkFileUri});
   }
-
-  static Future<bool> installWithRoot({required String apkFilePath}) async {
-    return await _channel.invokeMethod(
-        'installWithRoot', {'apkFilePath': apkFilePath});
-  }
 }

lib/providers/settings_provider.dart

@@ -18,8 +18,6 @@ String obtainiumTempId = 'imranr98_obtainium_${GitHub().hosts[0]}';
 String obtainiumId = 'dev.imranr.obtainium';
 String obtainiumUrl = 'https://github.com/ImranR98/Obtainium';
 
-enum InstallMethodSettings { normal, shizuku, root }
-
 enum ThemeSettings { system, light, dark }
 
 enum ColourSettings { basic, materialYou }
@@ -61,13 +59,12 @@ class SettingsProvider with ChangeNotifier {
     notifyListeners();
   }
 
-  InstallMethodSettings get installMethod {
-    return InstallMethodSettings.values[
-        prefs?.getInt('installMethod') ?? InstallMethodSettings.normal.index];
+  bool get useShizuku{
+    return prefs?.getBool('useShizuku') ?? false;
   }
 
-  set installMethod(InstallMethodSettings t) {
-    prefs?.setInt('installMethod', t.index);
+  set useShizuku(bool useShizuku) {
+    prefs?.setBool('useShizuku', useShizuku);
     notifyListeners();
   }