Android: Fix a warning regarding a string in the slider layout

Source/Android/res/layout/slider_layout.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:tools="http://schemas.android.com/tools"
               android:orientation="vertical"
               android:layout_width="match_parent"
               android:layout_height="match_parent"
@@ -15,7 +16,7 @@
 	<TextView
 		android:layout_width="wrap_content"
 		android:layout_height="wrap_content"
-		android:text="New Text"
+		tools:text="Sample Text"
 		android:id="@+id/textView"
 		android:textStyle="bold"/>