Shortcut has accounts

app/src/main/java/eu/faircode/email/ActivityMain.java

@@ -50,21 +50,32 @@ public class ActivityMain extends AppCompatActivity implements FragmentManager.O
 
         if (prefs.getBoolean("eula", false)) {
             super.onCreate(savedInstanceState);
-            new SimpleTask<List<EntityAccount>>() {
+
+            new SimpleTask<Boolean>() {
                 @Override
-                protected List<EntityAccount> onExecute(Context context, Bundle args) {
+                protected Boolean onExecute(Context context, Bundle args) {
-                    return DB.getInstance(context).account().getSynchronizingAccounts();
+                    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+                    if (prefs.getBoolean("has_accounts", false))
+                        return true;
+
+                    DB db = DB.getInstance(context);
+                    List<EntityAccount> accounts = db.account().getSynchronizingAccounts();
+                    boolean hasAccounts = (accounts != null && accounts.size() > 0);
+
+                    prefs.edit().putBoolean("has_accounts", hasAccounts).apply();
+
+                    return hasAccounts;
                 }
 
                 @Override
-                protected void onExecuted(Bundle args, List<EntityAccount> accounts) {
+                protected void onExecuted(Bundle args, Boolean hasAccounts) {
-                    if (accounts == null || accounts.size() == 0)
+                    if (hasAccounts) {
-                        startActivity(new Intent(ActivityMain.this, ActivitySetup.class));
-                    else {
                         startActivity(new Intent(ActivityMain.this, ActivityView.class));
                         ServiceSynchronize.boot(ActivityMain.this);
                         ServiceSend.boot(ActivityMain.this);
-                    }
+                    } else
+                        startActivity(new Intent(ActivityMain.this, ActivitySetup.class));
+
                     finish();
                 }
 

app/src/main/java/eu/faircode/email/FragmentSetup.java

@@ -25,6 +25,7 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.graphics.drawable.Drawable;
 import android.net.ConnectivityManager;
@@ -47,6 +48,7 @@ import androidx.annotation.Nullable;
 import androidx.core.content.ContextCompat;
 import androidx.fragment.app.FragmentTransaction;
 import androidx.lifecycle.Observer;
+import androidx.preference.PreferenceManager;
 
 import java.util.List;
 
@@ -270,6 +272,7 @@ public class FragmentSetup extends FragmentBase {
         super.onActivityCreated(savedInstanceState);
 
         final DB db = DB.getInstance(getContext());
+        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getContext());
 
         db.account().liveSynchronizingAccounts().observe(getViewLifecycleOwner(), new Observer<List<EntityAccount>>() {
             private boolean done = false;
@@ -286,6 +289,8 @@ public class FragmentSetup extends FragmentBase {
 
                 btnIdentity.setEnabled(done);
                 btnInbox.setEnabled(done);
+
+                prefs.edit().putBoolean("has_accounts", done).apply();
             }
         });