Completely restart app on login logout

app/src/main/AndroidManifest.xml

@@ -130,6 +130,9 @@
                 android:name="android.support.PARENT_ACTIVITY"
                 android:value=".activities.MainActivity" />
         </activity>
+        <activity
+            android:name=".utils.ProcessPhoenix"
+            android:theme="@style/Theme.AppCompat.Translucent" />
 
         <provider
             android:name="androidx.core.content.FileProvider"

app/src/main/java/awais/instagrabber/dialogs/AccountSwitcherDialogFragment.java

@@ -12,7 +12,6 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.DialogFragment;
-import androidx.fragment.app.FragmentActivity;
 import androidx.recyclerview.widget.LinearLayoutManager;
 
 import java.util.Collections;
@@ -25,8 +24,10 @@ import awais.instagrabber.db.datasources.AccountDataSource;
 import awais.instagrabber.db.entities.Account;
 import awais.instagrabber.db.repositories.AccountRepository;
 import awais.instagrabber.db.repositories.RepositoryCallback;
+import awais.instagrabber.utils.AppExecutors;
 import awais.instagrabber.utils.Constants;
 import awais.instagrabber.utils.CookieUtils;
+import awais.instagrabber.utils.ProcessPhoenix;
 import awais.instagrabber.utils.TextUtils;
 import awais.instagrabber.utils.Utils;
 
@@ -55,9 +56,14 @@ public class AccountSwitcherDialogFragment extends DialogFragment {
         }
         CookieUtils.setupCookies(model.getCookie());
         settingsHelper.putString(Constants.COOKIE, model.getCookie());
-        final FragmentActivity activity = getActivity();
+        // final FragmentActivity activity = getActivity();
-        if (activity != null) activity.recreate();
+        // if (activity != null) activity.recreate();
-        dismiss();
+        // dismiss();
+        AppExecutors.getInstance().mainThread().execute(() -> {
+            final Context context = getContext();
+            if (context == null) return;
+            ProcessPhoenix.triggerRebirth(context);
+        }, 200);
     };
 
     private final AccountSwitcherAdapter.OnAccountLongClickListener accountLongClickListener = (model, isCurrent) -> {

app/src/main/java/awais/instagrabber/fragments/settings/MorePreferencesFragment.java

@@ -11,8 +11,6 @@ import android.widget.Toast;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.fragment.app.FragmentActivity;
 import androidx.fragment.app.FragmentManager;
 import androidx.navigation.NavController;
 import androidx.navigation.NavDirections;
@@ -35,9 +33,11 @@ import awais.instagrabber.db.repositories.AccountRepository;
 import awais.instagrabber.db.repositories.RepositoryCallback;
 import awais.instagrabber.dialogs.AccountSwitcherDialogFragment;
 import awais.instagrabber.repositories.responses.User;
+import awais.instagrabber.utils.AppExecutors;
 import awais.instagrabber.utils.Constants;
 import awais.instagrabber.utils.CookieUtils;
 import awais.instagrabber.utils.FlavorTown;
+import awais.instagrabber.utils.ProcessPhoenix;
 import awais.instagrabber.utils.TextUtils;
 import awais.instagrabber.utils.Utils;
 import awais.instagrabber.webservices.ServiceCallback;
@@ -71,11 +71,15 @@ public class MorePreferencesFragment extends BasePreferencesFragment {
             accountCategory.setSummary(R.string.account_hint);
             accountCategory.addPreference(getAccountSwitcherPreference(cookie, context));
             accountCategory.addPreference(getPreference(R.string.logout, R.string.logout_summary, R.drawable.ic_logout_24, preference -> {
-                if (getContext() == null) return false;
+                final Context context1 = getContext();
+                if (context1 == null) return false;
                 CookieUtils.setupCookies("LOGOUT");
-                shouldRecreate();
+                // shouldRecreate();
-                Toast.makeText(context, R.string.logout_success, Toast.LENGTH_SHORT).show();
+                Toast.makeText(context1, R.string.logout_success, Toast.LENGTH_SHORT).show();
                 settingsHelper.putString(Constants.COOKIE, "");
+                AppExecutors.getInstance().mainThread().execute(() -> {
+                    ProcessPhoenix.triggerRebirth(context1);
+                }, 200);
                 return true;
             }));
         }
@@ -103,9 +107,14 @@ public class MorePreferencesFragment extends BasePreferencesFragment {
                                             CookieUtils.removeAllAccounts(context, new RepositoryCallback<Void>() {
                                                 @Override
                                                 public void onSuccess(final Void result) {
-                                                    shouldRecreate();
+                                                    // shouldRecreate();
-                                                    Toast.makeText(context, R.string.logout_success, Toast.LENGTH_SHORT).show();
+                                                    final Context context1 = getContext();
+                                                    if (context1 == null) return;
+                                                    Toast.makeText(context1, R.string.logout_success, Toast.LENGTH_SHORT).show();
                                                     settingsHelper.putString(Constants.COOKIE, "");
+                                                    AppExecutors.getInstance().mainThread().execute(() -> {
+                                                        ProcessPhoenix.triggerRebirth(context1);
+                                                    }, 200);
                                                 }
 
                                                 @Override
@@ -265,9 +274,14 @@ public class MorePreferencesFragment extends BasePreferencesFragment {
                                 new RepositoryCallback<Account>() {
                                     @Override
                                     public void onSuccess(final Account result) {
-                                        final FragmentActivity activity = getActivity();
+                                        // final FragmentActivity activity = getActivity();
-                                        if (activity == null) return;
+                                        // if (activity == null) return;
-                                        activity.recreate();
+                                        // activity.recreate();
+                                        AppExecutors.getInstance().mainThread().execute(() -> {
+                                            final Context context = getContext();
+                                            if (context == null) return;
+                                            ProcessPhoenix.triggerRebirth(context);
+                                        }, 200);
                                     }
 
                                     @Override

app/src/main/java/awais/instagrabber/utils/ProcessPhoenix.java

@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2014 Jake Wharton
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package awais.instagrabber.utils;
+
+import android.app.Activity;
+import android.app.ActivityManager;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Process;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK;
+import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
+
+/**
+ * Process Phoenix facilitates restarting your application process. This should only be used for
+ * things like fundamental state changes in your debug builds (e.g., changing from staging to
+ * production).
+ * <p>
+ * Trigger process recreation by calling {@link #triggerRebirth} with a {@link Context} instance.
+ */
+public final class ProcessPhoenix extends Activity {
+    private static final String KEY_RESTART_INTENTS = "phoenix_restart_intents";
+
+    /**
+     * Call to restart the application process using the {@linkplain Intent#CATEGORY_DEFAULT default}
+     * activity as an intent.
+     * <p>
+     * Behavior of the current process after invoking this method is undefined.
+     */
+    public static void triggerRebirth(Context context) {
+        triggerRebirth(context, getRestartIntent(context));
+    }
+
+    /**
+     * Call to restart the application process using the specified intents.
+     * <p>
+     * Behavior of the current process after invoking this method is undefined.
+     */
+    public static void triggerRebirth(Context context, Intent... nextIntents) {
+        Intent intent = new Intent(context, ProcessPhoenix.class);
+        intent.addFlags(FLAG_ACTIVITY_NEW_TASK); // In case we are called with non-Activity context.
+        intent.putParcelableArrayListExtra(KEY_RESTART_INTENTS, new ArrayList<>(Arrays.asList(nextIntents)));
+        context.startActivity(intent);
+        if (context instanceof Activity) {
+            ((Activity) context).finish();
+        }
+        Runtime.getRuntime().exit(0); // Kill kill kill!
+    }
+
+    private static Intent getRestartIntent(Context context) {
+        String packageName = context.getPackageName();
+        Intent defaultIntent = context.getPackageManager().getLaunchIntentForPackage(packageName);
+        if (defaultIntent != null) {
+            defaultIntent.addFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_CLEAR_TASK);
+            return defaultIntent;
+        }
+
+        throw new IllegalStateException("Unable to determine default activity for "
+                                                + packageName
+                                                + ". Does an activity specify the DEFAULT category in its intent filter?");
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        ArrayList<Intent> intents = getIntent().getParcelableArrayListExtra(KEY_RESTART_INTENTS);
+        startActivities(intents.toArray(new Intent[intents.size()]));
+        finish();
+        Runtime.getRuntime().exit(0); // Kill kill kill!
+    }
+
+    /**
+     * Checks if the current process is a temporary Phoenix Process.
+     * This can be used to avoid initialisation of unused resources or to prevent running code that
+     * is not multi-process ready.
+     *
+     * @return true if the current process is a temporary Phoenix Process
+     */
+    public static boolean isPhoenixProcess(Context context) {
+        int currentPid = Process.myPid();
+        ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
+        List<ActivityManager.RunningAppProcessInfo> runningProcesses = manager.getRunningAppProcesses();
+        if (runningProcesses != null) {
+            for (ActivityManager.RunningAppProcessInfo processInfo : runningProcesses) {
+                if (processInfo.pid == currentPid && processInfo.processName.endsWith(":phoenix")) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+}