created main menu

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

@@ -1,18 +1,40 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent"
-	tools:context=".MainActivity">
+	android:orientation="vertical"
+	tools:context=".MainActivity" >
 
 	<TextView
-		android:layout_width="wrap_content"
+		android:id="@+id/textView"
+		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
-		android:text="Hello World!"
-		app:layout_constraintBottom_toBottomOf="parent"
-		app:layout_constraintLeft_toLeftOf="parent"
-		app:layout_constraintRight_toRightOf="parent"
-		app:layout_constraintTop_toTopOf="parent" />
+		android:text="@string/chooseTypeNotif" />
 
-</android.support.constraint.ConstraintLayout>
+	<RadioGroup
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content" >
+
+		<RadioButton
+			android:id="@+id/radioOutdoor"
+			android:layout_width="match_parent"
+			android:layout_height="wrap_content"
+			android:layout_weight="1"
+			android:text="@string/outdoor" />
+
+		<RadioButton
+			android:id="@+id/radioIndoor"
+			android:layout_width="match_parent"
+			android:layout_height="wrap_content"
+			android:layout_weight="1"
+			android:text="@string/indoor" />
+	</RadioGroup>
+
+	<Button
+		android:id="@+id/buttonStartRun"
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		android:text="@string/startRunning" />
+</LinearLayout>

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

@@ -1,3 +1,8 @@
 <resources>
 	<string name="app_name">Run Assistant</string>
+
+	<string name="chooseTypeNotif">Please select type of running activity:</string>
+	<string name="startRunning">Start running</string>
+	<string name="indoor">Indoor running</string>
+	<string name="outdoor">Outdoor running</string>
 </resources>