Added auto optimize info button

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

@@ -34,6 +34,7 @@ import android.view.ViewGroup;
 import android.widget.AdapterView;
 import android.widget.CheckBox;
 import android.widget.CompoundButton;
+import android.widget.ImageButton;
 import android.widget.Spinner;
 import android.widget.TextView;
 import android.widget.TimePicker;
@@ -63,6 +64,7 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
     private SwitchCompat swEnabled;
     private Spinner spPollInterval;
     private SwitchCompat swOptimize;
+    private ImageButton ibOptimizeInfo;
     private RecyclerView rvExempted;
     private SwitchCompat swSchedule;
     private TextView tvSchedulePro;
@@ -105,6 +107,7 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
         swEnabled = view.findViewById(R.id.swEnabled);
         spPollInterval = view.findViewById(R.id.spPollInterval);
         swOptimize = view.findViewById(R.id.swOptimize);
+        ibOptimizeInfo = view.findViewById(R.id.ibOptimizeInfo);
         swSchedule = view.findViewById(R.id.swSchedule);
         rvExempted = view.findViewById(R.id.rvExempted);
         tvSchedulePro = view.findViewById(R.id.tvSchedulePro);
@@ -179,6 +182,13 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
             }
         });
 
+        ibOptimizeInfo.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Helper.viewFAQ(getContext(), 39);
+            }
+        });
+
         rvExempted.setHasFixedSize(false);
         LinearLayoutManager llm = new LinearLayoutManager(getContext());
         rvExempted.setLayoutManager(llm);

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

@@ -104,15 +104,25 @@
             android:id="@+id/tvOptimizeHint"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
-            android:layout_marginTop="6dp"
-            android:layout_marginEnd="48dp"
+            android:layout_marginTop="12dp"
+            android:minHeight="45dp"
             android:text="@string/title_advanced_optimize_hint"
             android:textAppearance="@style/TextAppearance.AppCompat.Small"
             android:textStyle="italic"
-            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/ibOptimizeInfo"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/swOptimize" />
 
+        <ImageButton
+            android:id="@+id/ibOptimizeInfo"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:contentDescription="@string/title_info"
+            android:tooltipText="@string/title_info"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="@id/tvOptimizeHint"
+            app:srcCompat="@drawable/baseline_info_24" />
+
         <eu.faircode.email.FixedTextView
             android:id="@+id/tvExempted"
             android:layout_width="0dp"