Added remark about Gmail setup

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

@@ -74,6 +74,8 @@ import java.util.Objects;
 import javax.mail.Folder;
 
 import static android.app.Activity.RESULT_OK;
+import static android.view.View.GONE;
+import static android.view.View.VISIBLE;
 import static com.google.android.material.textfield.TextInputLayout.END_ICON_NONE;
 import static com.google.android.material.textfield.TextInputLayout.END_ICON_PASSWORD_TOGGLE;
 
@@ -82,6 +84,7 @@ public class FragmentAccount extends FragmentBase {
     private ScrollView scroll;
 
     private Spinner spProvider;
+    private TextView tvGmailHint;
 
     private EditText etDomain;
     private Button btnAutoConfig;
@@ -193,6 +196,7 @@ public class FragmentAccount extends FragmentBase {
 
         // Get controls
         spProvider = view.findViewById(R.id.spProvider);
+        tvGmailHint = view.findViewById(R.id.tvGmailHint);
 
         etDomain = view.findViewById(R.id.etDomain);
         btnAutoConfig = view.findViewById(R.id.btnAutoConfig);
@@ -267,6 +271,9 @@ public class FragmentAccount extends FragmentBase {
             @Override
             public void onItemSelected(AdapterView<?> adapterView, View view, int position, long itemid) {
                 EmailProvider provider = (EmailProvider) adapterView.getSelectedItem();
+                tvGmailHint.setVisibility(
+                        auth == EmailService.AUTH_TYPE_PASSWORD && "gmail".equals(provider.id)
+                                ? VISIBLE : GONE);
                 grpServer.setVisibility(position > 0 ? View.VISIBLE : View.GONE);
                 grpAuthorize.setVisibility(position > 0 ? View.VISIBLE : View.GONE);
 
@@ -492,6 +499,8 @@ public class FragmentAccount extends FragmentBase {
         // Initialize
         Helper.setViewsEnabled(view, false);
 
+        tvGmailHint.setVisibility(GONE);
+
         btnAutoConfig.setEnabled(false);
         pbAutoConfig.setVisibility(View.GONE);
 

app/src/main/res/layout/fragment_account.xml

@@ -32,6 +32,17 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/tvProvider" />
 
+        <TextView
+            android:id="@+id/tvGmailHint"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="6dp"
+            android:text="@string/title_account_gmail"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            android:textStyle="italic"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/spProvider" />
+
         <!-- auto config -->
 
         <TextView
@@ -42,7 +53,7 @@
             android:text="@string/title_domain"
             android:textAppearance="@style/TextAppearance.AppCompat.Medium"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/spProvider" />
+            app:layout_constraintTop_toBottomOf="@id/tvGmailHint" />
 
         <TextView
             android:id="@+id/tvDomainHint"

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

@@ -509,6 +509,7 @@
     <string name="title_account_left">Swipe left</string>
     <string name="title_account_right">Swipe right</string>
     <string name="title_account_move">Default move to</string>
+    <string name="title_account_gmail">For reliable synchronisation of a Gmail account, the Gmail quick setup wizard should be used whenever possible</string>
     <string name="title_domain">Domain name</string>
     <string name="title_autoconfig">Get settings</string>
     <string name="title_imap" translatable="false">IMAP</string>