activity_setting: fine tune layout style

For multiple users it helps to
keep track about who did what.

app/src/main/java/it/danieleverducci/lunatracker/MainActivity.kt

@@ -391,11 +391,10 @@ class MainActivity : AppCompatActivity() {
         })
 
         // show optional signature
-        dialogView.findViewById<TextView>(R.id.dialog_event_detail_type_signature).text = event.signature
-        dialogView.findViewById<LinearLayout>(R.id.dialog_event_signature_layout).visibility = if (event.signature.isNotEmpty()) {
-            View.VISIBLE
-        } else {
-            View.GONE
+        if (event.signature.isNotEmpty()) {
+            val signatureTextEdit = dialogView.findViewById<TextView>(R.id.dialog_event_detail_type_signature)
+            signatureTextEdit.text =  String.format(getString(R.string.dialog_event_detail_signature), event.signature)
+            signatureTextEdit.visibility = View.VISIBLE
         }
 
         // create next/previous links to events of the same type

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

@@ -61,6 +61,14 @@
 
     </ScrollView>
 
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:id="@+id/dialog_event_detail_type_signature"
+        android:layout_marginBottom="5dp"
+        android:visibility="gone"/>
+
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
@@ -89,25 +97,4 @@
 
     </LinearLayout>
 
-    <LinearLayout
-        android:id="@+id/dialog_event_signature_layout"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal">
-
-        <TextView
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginEnd="5dp"
-            android:text="@string/dialog_event_detail_signature"/>
-
-        <TextView
-            android:id="@+id/dialog_event_detail_type_signature"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_gravity="end"
-            android:text="" />
-
-    </LinearLayout>
-
 </LinearLayout>

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

@@ -131,7 +131,7 @@
     <string name="dialog_event_detail_delete_button">Delete</string>
     <string name="dialog_event_detail_quantity">Quantity</string>
     <string name="dialog_event_detail_notes">Notes</string>
-    <string name="dialog_event_detail_signature">Created By</string>
+    <string name="dialog_event_detail_signature">by %s</string>
 
     <string name="dialog_add_logbook_title">Add logbook</string>
     <string name="dialog_add_logbook_logbookname">👶 Logbook name</string>