Merge pull request #332 from android/wear

Adds code for showing Scaffold and Position Indicator

Author: kul3r4

wear/src/main/java/com/example/wear/snippets/rotary/Rotary.kt

@@ -242,6 +242,20 @@ fun SnapScrollableScreen() {
     // [END android_wear_rotary_input_snap_fling]
 }
 
+@Composable
+fun PositionScrollIndicator(){
+    // [START android_wear_rotary_position_indicator]
+    val listState = rememberScalingLazyListState()
+    Scaffold(
+        positionIndicator = {
+            PositionIndicator(scalingLazyListState = listState)
+        }
+    ) {
+        // ...
+    }
+    // [END android_wear_rotary_position_indicator]
+}
+
 @WearPreviewDevices
 @WearPreviewFontScales
 @Composable
@@ -262,3 +276,10 @@ fun ScrollableScreenPreview() {
 fun SnapScrollableScreenPreview() {
     SnapScrollableScreen()
 }
+
+@WearPreviewDevices
+@WearPreviewFontScales
+@Composable
+fun PositionScrollIndicatorPreview() {
+    PositionScrollIndicator()
+}