Added reference to FAQ about pro features price

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

@@ -39,6 +39,7 @@ public class FragmentPro extends FragmentEx implements SharedPreferences.OnShare
     private TextView tvActivated;
     private TextView tvList;
     private Button btnPurchase;
+    private TextView tvPrice;
 
     @Override
     @Nullable
@@ -50,6 +51,7 @@ public class FragmentPro extends FragmentEx implements SharedPreferences.OnShare
         tvActivated = view.findViewById(R.id.tvActivated);
         tvList = view.findViewById(R.id.tvList);
         btnPurchase = view.findViewById(R.id.btnPurchase);
+        tvPrice = view.findViewById(R.id.tvPrice);
 
         tvList.setText(Html.fromHtml("<a href=\"https://email.faircode.eu/#pro\">" + Html.escapeHtml(getString(R.string.title_pro_list)) + "</a>"));
         tvList.setMovementMethod(LinkMovementMethod.getInstance());
@@ -65,6 +67,8 @@ public class FragmentPro extends FragmentEx implements SharedPreferences.OnShare
             }
         });
 
+        tvPrice.setMovementMethod(LinkMovementMethod.getInstance());
+
         return view;
     }
 

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

@@ -46,5 +46,15 @@
             android:textAppearance="@style/TextAppearance.AppCompat.Small"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/btnPurchase" />
+
+        <TextView
+            android:id="@+id/tvPrice"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:text="@string/title_pro_price"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/tvHint" />
     </androidx.constraintlayout.widget.ConstraintLayout>
 </ScrollView>

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

@@ -227,6 +227,7 @@
     <string name="title_pro_list">List of pro features</string>
     <string name="title_pro_purchase">Buy</string>
     <string name="title_pro_hint">Buying pro features will allow you to use all current and future pro features, will keep this app maintained, and supported</string>
+    <string name="title_pro_price">Please see <a href="https://github.com/M66B/open-source-email/blob/master/FAQ.md#FAQ19">this FAQ</a> about the price of the pro features</string>
     <string name="title_pro_activated">All pro features are activated</string>
     <string name="title_pro_valid">All pro features activated</string>
     <string name="title_pro_invalid">Invalid response</string>