Check AndroidX version

README.md

@@ -39,7 +39,7 @@ val viewDragHelper = TranslationViewDragHelper.create(
 See the sample [custom view](https://github.com/Commit451/TranslationViewDragHelper/blob/master/app/src/main/java/com/commit451/betterviewdraghelper/sample/AllowsForDragFrameLayout.java) for a more complete example
 
 # Basis
-The current version of this helper is derived from `ViewDragHelper` source from `24.2.0` of the Support Library. Due to private constructor access on ViewDragHelper, the source has to be copied out into the `TranslationViewDragHelper`. You can check the diff [here](https://www.diffchecker.com/)
+The current version of this helper is derived from `ViewDragHelper` source from `24.2.0` of the Support Library (pre AndroidX). Due to private constructor access on ViewDragHelper, the source has to be copied out into the `TranslationViewDragHelper`.
 
 License
 --------

app/src/main/java/com/commit451/translationviewdraghelper/sample/DragFrameLayout.kt

@@ -13,6 +13,9 @@ import com.commit451.translationviewdraghelper.TranslationViewDragHelper
 class DragFrameLayout : FrameLayout {
 
     private var viewDragHelper: TranslationViewDragHelper
+    // uncomment this and the rest to see how the real ViewDragHelper is
+//    private var viewDragHelper: ViewDragHelper
+
 
     private var callback: TranslationViewDragHelper.Callback =
         object : TranslationViewDragHelper.Callback() {
@@ -32,6 +35,24 @@ class DragFrameLayout : FrameLayout {
             }
         }
 
+//    private var callback: ViewDragHelper.Callback =
+//        object : ViewDragHelper.Callback() {
+//            override fun tryCaptureView(child: View, pointerId: Int): Boolean {
+//                //Any children can be captured
+//                return true
+//            }
+//
+//            override fun clampViewPositionHorizontal(child: View, left: Int, dx: Int): Int {
+//                //allow full movement along horizontal axis
+//                return left
+//            }
+//
+//            override fun clampViewPositionVertical(child: View, top: Int, dy: Int): Int {
+//                //allow full movement along vertical axis
+//                return top
+//            }
+//        }
+
     constructor(context: Context) : super(context)
 
     constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
@@ -51,6 +72,7 @@ class DragFrameLayout : FrameLayout {
 
     init {
         viewDragHelper = TranslationViewDragHelper.create(this, 1.0f, callback)
+        //viewDragHelper = ViewDragHelper.create(this, 1.0f, callback)
     }
 
     override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {