Added info button

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

@@ -58,6 +58,7 @@ public class FragmentOptionsNotifications extends FragmentBase implements Shared
     private ImageView ivChannelDefault;
     private Button btnManageService;
     private ImageView ivChannelService;
+    private ImageButton ibWhy;
     private SwitchCompat swNewestFirst;
     private SwitchCompat swBackground;
 
@@ -129,6 +130,7 @@ public class FragmentOptionsNotifications extends FragmentBase implements Shared
         ivChannelDefault = view.findViewById(R.id.ivChannelDefault);
         btnManageService = view.findViewById(R.id.btnManageService);
         ivChannelService = view.findViewById(R.id.ivChannelService);
+        ibWhy = view.findViewById(R.id.ibWhy);
         swNewestFirst = view.findViewById(R.id.swNewestFirst);
         swBackground = view.findViewById(R.id.swBackground);
 
@@ -218,6 +220,13 @@ public class FragmentOptionsNotifications extends FragmentBase implements Shared
 
         ivChannelService.setVisibility(View.GONE);
 
+        ibWhy.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Helper.viewFAQ(v.getContext(), 2);
+            }
+        });
+
         swNewestFirst.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {

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

@@ -130,6 +130,16 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/btnManageService" />
 
+        <ImageButton
+            android:id="@+id/ibWhy"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:contentDescription="@string/title_info"
+            android:tooltipText="@string/title_info"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/tvManageServiceHint"
+            app:srcCompat="@drawable/twotone_info_24" />
+
         <androidx.appcompat.widget.SwitchCompat
             android:id="@+id/swNewestFirst"
             android:layout_width="0dp"
@@ -138,7 +148,7 @@
             android:text="@string/title_advanced_notifications_newest_first"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/tvManageServiceHint"
+            app:layout_constraintTop_toBottomOf="@id/ibWhy"
             app:switchPadding="12dp" />
 
         <androidx.appcompat.widget.SwitchCompat