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authorAllan Wang <me@allanwang.ca>2017-07-06 23:30:45 -0700
committerAllan Wang <me@allanwang.ca>2017-07-06 23:30:45 -0700
commit8f7cab78b5d1c882a1fa19330823e7d440343a62 (patch)
tree36db93b37faeef9ca8e54c3081695b76adb7af8d /core/src/main/kotlin
parent6555a738c44d8734a8043e36711a6765c5c8d948 (diff)
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Add back logic for swipe
Diffstat (limited to 'core/src/main/kotlin')
-rw-r--r--core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt13
-rw-r--r--core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java366
-rw-r--r--core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java2
3 files changed, 114 insertions, 267 deletions
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt
index 9041c90..00aa33d 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt
@@ -202,13 +202,20 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
override fun onInterceptTouchEvent(event: MotionEvent): Boolean {
if (!swipeEnabled || disallowIntercept) return false
- val s = dragHelper.shouldInterceptTouchEvent(event)
- return s
+ try {
+ return dragHelper.shouldInterceptTouchEvent(event)
+ } catch (e: Exception) {
+ return false
+ }
}
override fun onTouchEvent(event: MotionEvent): Boolean {
if (!swipeEnabled) return false
- dragHelper.processTouchEvent(event)
+ try {
+ dragHelper.processTouchEvent(event)
+ } catch (e: Exception) {
+ return false
+ }
return true
}
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java b/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java
index c6ff116..8f7f27c 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java
@@ -119,7 +119,7 @@ public class ViewDragHelper implements ViewDragHelperExtras {
private OverScroller mScroller;
- private final ViewDragHelper.Callback mCallback;
+ private final Callback mCallback;
private View mCapturedView;
private boolean mReleaseInProgress;
@@ -336,7 +336,7 @@ public class ViewDragHelper implements ViewDragHelperExtras {
* @param cb Callback to provide information and receive events
* @return a new ViewDragHelper instance
*/
- public static ViewDragHelper create(ViewGroup forParent, ViewDragHelper.Callback cb) {
+ public static ViewDragHelper create(ViewGroup forParent, Callback cb) {
return new ViewDragHelper(forParent.getContext(), forParent, cb);
}
@@ -349,7 +349,7 @@ public class ViewDragHelper implements ViewDragHelperExtras {
* @param cb Callback to provide information and receive events
* @return a new ViewDragHelper instance
*/
- public static ViewDragHelper create(ViewGroup forParent, float sensitivity, ViewDragHelper.Callback cb) {
+ public static ViewDragHelper create(ViewGroup forParent, float sensitivity, Callback cb) {
final ViewDragHelper helper = create(forParent, cb);
helper.mTouchSlop = (int) (helper.mTouchSlop * (1 / sensitivity));
return helper;
@@ -363,7 +363,7 @@ public class ViewDragHelper implements ViewDragHelperExtras {
* @param context Context to initialize config-dependent params from
* @param forParent Parent view to monitor
*/
- private ViewDragHelper(Context context, ViewGroup forParent, ViewDragHelper.Callback cb) {
+ private ViewDragHelper(Context context, ViewGroup forParent, Callback cb) {
if (forParent == null) {
throw new IllegalArgumentException("Parent view may not be null");
}
@@ -448,8 +448,8 @@ public class ViewDragHelper implements ViewDragHelperExtras {
/**
* Enable edge tracking for the selected edges of the parent view.
- * The callback's {@link ViewDragHelper.Callback#onEdgeTouched(int, int)} and
- * {@link ViewDragHelper.Callback#onEdgeDragStarted(int, int)} methods will only be invoked
+ * The callback's {@link Callback#onEdgeTouched(int, int)} and
+ * {@link Callback#onEdgeDragStarted(int, int)} methods will only be invoked
* for edges for which edge tracking has been enabled.
*
* @param edgeFlags Combination of edge flags describing the edges to watch
@@ -480,7 +480,7 @@ public class ViewDragHelper implements ViewDragHelperExtras {
/**
* Capture a specific child view for dragging within the parent. The callback will be notified
- * but {@link ViewDragHelper.Callback#tryCaptureView(android.view.View, int)} will not be asked permission to
+ * but {@link Callback#tryCaptureView(android.view.View, int)} will not be asked permission to
* capture this view.
*
* @param childView Child view to capture
@@ -495,7 +495,6 @@ public class ViewDragHelper implements ViewDragHelperExtras {
mCapturedView = childView;
mActivePointerId = activePointerId;
mCallback.onViewCaptured(childView, activePointerId);
- setDragState(STATE_DRAGGING);
}
/**
@@ -569,14 +568,7 @@ public class ViewDragHelper implements ViewDragHelperExtras {
mCapturedView = child;
mActivePointerId = INVALID_POINTER;
- boolean continueSliding = forceSettleCapturedViewAt(finalLeft, finalTop, 0, 0);
- if (!continueSliding && mDragState == STATE_IDLE && mCapturedView != null) {
- // If we're in an IDLE state to begin with and aren't moving anywhere, we
- // end up having a non-null capturedView with an IDLE dragState
- mCapturedView = null;
- }
-
- return continueSliding;
+ return forceSettleCapturedViewAt(finalLeft, finalTop, 0, 0);
}
/**
@@ -986,11 +978,6 @@ public class ViewDragHelper implements ViewDragHelperExtras {
cancel();
}
- if (mVelocityTracker == null) {
- mVelocityTracker = VelocityTracker.obtain();
- }
- mVelocityTracker.addMovement(ev);
-
switch (action) {
case MotionEvent.ACTION_DOWN: {
final float x = ev.getX();
@@ -1001,13 +988,16 @@ public class ViewDragHelper implements ViewDragHelperExtras {
final View toCapture = findTopChildUnder((int) x, (int) y);
// Catch a settling view if possible.
- if (toCapture == mCapturedView && mDragState == STATE_SETTLING) {
- tryCaptureViewForDrag(toCapture, pointerId);
- }
+ tryCaptureViewForDrag(toCapture, pointerId);
- final int edgesTouched = mInitialEdgesTouched[pointerId];
- if ((edgesTouched & mTrackingEdges) != 0) {
- mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
+ if (mDragState == STATE_SETTLING) {
+ setDragState(STATE_DRAGGING);
+ } else if (mDragState == STATE_IDLE) {
+ final int edgesTouched = mInitialEdgesTouched[pointerId];
+ if ((edgesTouched & mTrackingEdges) != 0) {
+ mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
+ }
+ setDragState(STATE_JUDGING);
}
break;
}
@@ -1016,75 +1006,34 @@ public class ViewDragHelper implements ViewDragHelperExtras {
final int pointerId = ev.getPointerId(actionIndex);
final float x = ev.getX(actionIndex);
final float y = ev.getY(actionIndex);
-
saveInitialMotion(x, y, pointerId);
-
- // A ViewDragHelper can only manipulate one view at a time.
- if (mDragState == STATE_IDLE) {
- final int edgesTouched = mInitialEdgesTouched[pointerId];
- if ((edgesTouched & mTrackingEdges) != 0) {
- mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
- }
- } else if (mDragState == STATE_SETTLING) {
- // Catch a settling view if possible.
- final View toCapture = findTopChildUnder((int) x, (int) y);
- if (toCapture == mCapturedView) {
- tryCaptureViewForDrag(toCapture, pointerId);
- }
- }
break;
}
case MotionEvent.ACTION_MOVE: {
- if (mInitialMotionX == null || mInitialMotionY == null) break;
+ if (mDragState != STATE_JUDGING) break;
+ if (mVelocityTracker == null)
+ mVelocityTracker = VelocityTracker.obtain();
+ if (mDragState == STATE_DRAGGING)
+ mVelocityTracker.addMovement(ev);
+ final int i = ev.findPointerIndex(mActivePointerId);
- // First to cross a touch slop over a draggable view wins. Also report edge drags.
- final int pointerCount = ev.getPointerCount();
- for (int i = 0; i < pointerCount; i++) {
- final int pointerId = ev.getPointerId(i);
+ final float x = ev.getX(i);
+ final float y = ev.getY(i);
+ final float dx = x - mInitialMotionX[mActivePointerId];
+ final float dy = y - mInitialMotionY[mActivePointerId];
- // If pointer is invalid then skip the ACTION_MOVE.
- if (!isValidPointerForActionMove(pointerId)) continue;
-
- final float x = ev.getX(i);
- final float y = ev.getY(i);
- final float dx = x - mInitialMotionX[pointerId];
- final float dy = y - mInitialMotionY[pointerId];
+ reportNewEdgeDrags(dx, dy, mActivePointerId);
- final View toCapture = findTopChildUnder((int) x, (int) y);
- final boolean pastSlop = toCapture != null && checkTouchSlop(toCapture, dx, dy);
- if (pastSlop) {
- // check the callback's
- // getView[Horizontal|Vertical]DragRange methods to know
- // if you can move at all along an axis, then see if it
- // would clamp to the same value. If you can't move at
- // all in every dimension with a nonzero range, bail.
- final int oldLeft = toCapture.getLeft();
- final int targetLeft = oldLeft + (int) dx;
- final int newLeft = mCallback.clampViewPositionHorizontal(toCapture,
- targetLeft, (int) dx);
- final int oldTop = toCapture.getTop();
- final int targetTop = oldTop + (int) dy;
- final int newTop = mCallback.clampViewPositionVertical(toCapture, targetTop,
- (int) dy);
- final int hDragRange = mCallback.getViewHorizontalDragRange(toCapture);
- final int vDragRange = mCallback.getViewVerticalDragRange(toCapture);
- if ((hDragRange == 0 || (hDragRange > 0 && newLeft == oldLeft))
- && (vDragRange == 0 || (vDragRange > 0 && newTop == oldTop))) {
- break;
- }
- }
- reportNewEdgeDrags(dx, dy, pointerId);
- if (mDragState == STATE_DRAGGING) {
- // Callback might have started an edge drag
- break;
- }
+ final View toCapture = findTopChildUnder((int) x, (int) y);
+ int slop = checkTouchSlop(toCapture, dx, dy);
- if (pastSlop && tryCaptureViewForDrag(toCapture, pointerId)) {
- break;
- }
+ if (slop == -1) cancel();
+ else if (slop > 0 && tryCaptureViewForDrag(toCapture, mActivePointerId)) {
+ break;
}
saveLastMotion(ev);
+
break;
}
@@ -1094,8 +1043,14 @@ public class ViewDragHelper implements ViewDragHelperExtras {
break;
}
- case MotionEvent.ACTION_UP:
+ case MotionEvent.ACTION_UP: {
+ releaseViewForPointerUp();
+ cancel();
+ break;
+ }
+
case MotionEvent.ACTION_CANCEL: {
+ dispatchViewReleased(0, 0);
cancel();
break;
}
@@ -1120,28 +1075,28 @@ public class ViewDragHelper implements ViewDragHelperExtras {
cancel();
}
- if (mVelocityTracker == null) {
- mVelocityTracker = VelocityTracker.obtain();
- }
- mVelocityTracker.addMovement(ev);
-
switch (action) {
case MotionEvent.ACTION_DOWN: {
final float x = ev.getX();
final float y = ev.getY();
final int pointerId = ev.getPointerId(0);
+ saveInitialMotion(x, y, pointerId);
final View toCapture = findTopChildUnder((int) x, (int) y);
- saveInitialMotion(x, y, pointerId);
// Since the parent is already directly processing this touch event,
// there is no reason to delay for a slop before dragging.
// Start immediately if possible.
tryCaptureViewForDrag(toCapture, pointerId);
- final int edgesTouched = mInitialEdgesTouched[pointerId];
- if ((edgesTouched & mTrackingEdges) != 0) {
- mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
+ if (mDragState == STATE_SETTLING) {
+ setDragState(STATE_DRAGGING);
+ } else if (mDragState == STATE_IDLE) {
+ final int edgesTouched = mInitialEdgesTouched[pointerId];
+ if ((edgesTouched & mTrackingEdges) != 0) {
+ mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
+ }
+ setDragState(STATE_JUDGING);
}
break;
}
@@ -1152,68 +1107,49 @@ public class ViewDragHelper implements ViewDragHelperExtras {
final float y = ev.getY(actionIndex);
saveInitialMotion(x, y, pointerId);
+ break;
+ }
- // A ViewDragHelper can only manipulate one view at a time.
- if (mDragState == STATE_IDLE) {
- // If we're idle we can do anything! Treat it like a normal down event.
+ case MotionEvent.ACTION_MOVE: {
+ if (mDragState == STATE_JUDGING) {
- final View toCapture = findTopChildUnder((int) x, (int) y);
- tryCaptureViewForDrag(toCapture, pointerId);
+ final int i = ev.findPointerIndex(mActivePointerId);
+ final float x = ev.getX(i);
+ final float y = ev.getY(i);
+ final float dx = x - mInitialMotionX[mActivePointerId];
+ final float dy = y - mInitialMotionY[mActivePointerId];
- final int edgesTouched = mInitialEdgesTouched[pointerId];
- if ((edgesTouched & mTrackingEdges) != 0) {
- mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
+ reportNewEdgeDrags(dx, dy, mActivePointerId);
+ if (mDragState == STATE_DRAGGING) {
+ // Callback might have started an edge drag.
+ break;
}
- } else if (isCapturedViewUnder((int) x, (int) y)) {
- // We're still tracking a captured view. If the same view is under this
- // point, we'll swap to controlling it with this pointer instead.
- // (This will still work if we're "catching" a settling view.)
- tryCaptureViewForDrag(mCapturedView, pointerId);
+ final View toCapture = findTopChildUnder((int) x, (int) y);
+ int slop = checkTouchSlop(toCapture, dx, dy);
+ if (slop == -1) cancel();
+ else if (slop > 0 && tryCaptureViewForDrag(toCapture, mActivePointerId)) {
+ break;
+ }
+ saveLastMotion(ev);
}
- break;
- }
- case MotionEvent.ACTION_MOVE: {
+
if (mDragState == STATE_DRAGGING) {
- // If pointer is invalid then skip the ACTION_MOVE.
- if (!isValidPointerForActionMove(mActivePointerId)) break;
+ if (mVelocityTracker == null) {
+ mVelocityTracker = VelocityTracker.obtain();
+ }
+ if (mDragState == STATE_DRAGGING)
+ mVelocityTracker.addMovement(ev);
final int index = ev.findPointerIndex(mActivePointerId);
+ if (index == -1) break;
+
final float x = ev.getX(index);
final float y = ev.getY(index);
final int idx = (int) (x - mLastMotionX[mActivePointerId]);
final int idy = (int) (y - mLastMotionY[mActivePointerId]);
-
dragTo(mCapturedView.getLeft() + idx, mCapturedView.getTop() + idy, idx, idy);
-
- saveLastMotion(ev);
- } else {
- // Check to see if any pointer is now over a draggable view.
- final int pointerCount = ev.getPointerCount();
- for (int i = 0; i < pointerCount; i++) {
- final int pointerId = ev.getPointerId(i);
-
- // If pointer is invalid then skip the ACTION_MOVE.
- if (!isValidPointerForActionMove(pointerId)) continue;
-
- final float x = ev.getX(i);
- final float y = ev.getY(i);
- final float dx = x - mInitialMotionX[pointerId];
- final float dy = y - mInitialMotionY[pointerId];
-
- reportNewEdgeDrags(dx, dy, pointerId);
- if (mDragState == STATE_DRAGGING) {
- // Callback might have started an edge drag.
- break;
- }
-
- final View toCapture = findTopChildUnder((int) x, (int) y);
- if (checkTouchSlop(toCapture, dx, dy)
- && tryCaptureViewForDrag(toCapture, pointerId)) {
- break;
- }
- }
saveLastMotion(ev);
}
break;
@@ -1221,47 +1157,18 @@ public class ViewDragHelper implements ViewDragHelperExtras {
case MotionEvent.ACTION_POINTER_UP: {
final int pointerId = ev.getPointerId(actionIndex);
- if (mDragState == STATE_DRAGGING && pointerId == mActivePointerId) {
- // Try to find another pointer that's still holding on to the captured view.
- int newActivePointer = INVALID_POINTER;
- final int pointerCount = ev.getPointerCount();
- for (int i = 0; i < pointerCount; i++) {
- final int id = ev.getPointerId(i);
- if (id == mActivePointerId) {
- // This one's going away, skip.
- continue;
- }
-
- final float x = ev.getX(i);
- final float y = ev.getY(i);
- if (findTopChildUnder((int) x, (int) y) == mCapturedView
- && tryCaptureViewForDrag(mCapturedView, id)) {
- newActivePointer = mActivePointerId;
- break;
- }
- }
-
- if (newActivePointer == INVALID_POINTER) {
- // We didn't find another pointer still touching the view, release it.
- releaseViewForPointerUp();
- }
- }
clearMotionHistory(pointerId);
break;
}
case MotionEvent.ACTION_UP: {
- if (mDragState == STATE_DRAGGING) {
- releaseViewForPointerUp();
- }
+ releaseViewForPointerUp();
cancel();
break;
}
case MotionEvent.ACTION_CANCEL: {
- if (mDragState == STATE_DRAGGING) {
- dispatchViewReleased(0, 0);
- }
+ dispatchViewReleased(0, 0);
cancel();
break;
}
@@ -1314,84 +1221,28 @@ public class ViewDragHelper implements ViewDragHelperExtras {
* @param child Child to check
* @param dx Motion since initial position along X axis
* @param dy Motion since initial position along Y axis
- * @return true if the touch slop has been crossed
+ * @return 1 if the touch slop has been crossed on horizontal
+ * - 0 if the touch slop has not been crossed
+ * - -1 if the touch slop has been crossed on vertical
+ * - 2 if the touch slop has been crossed on both
*/
- private boolean checkTouchSlop(View child, float dx, float dy) {
+ private int checkTouchSlop(View child, float dx, float dy) {
if (child == null) {
- return false;
- }
- final boolean checkHorizontal = mCallback.getViewHorizontalDragRange(child) > 0;
- final boolean checkVertical = mCallback.getViewVerticalDragRange(child) > 0;
-
- if (checkHorizontal && checkVertical) {
- return dx * dx + dy * dy > mTouchSlop * mTouchSlop;
- } else if (checkHorizontal) {
- return Math.abs(dx) > mTouchSlop;
- } else if (checkVertical) {
- return Math.abs(dy) > mTouchSlop;
- }
- return false;
- }
-
- /**
- * Check if any pointer tracked in the current gesture has crossed
- * the required slop threshold.
- * <p>
- * <p>This depends on internal state populated by
- * {@link #shouldInterceptTouchEvent(android.view.MotionEvent)} or
- * {@link #processTouchEvent(android.view.MotionEvent)}. You should only rely on
- * the results of this method after all currently available touch data
- * has been provided to one of these two methods.</p>
- *
- * @param directions Combination of direction flags, see {@link #DIRECTION_HORIZONTAL},
- * {@link #DIRECTION_VERTICAL}, {@link #DIRECTION_ALL}
- * @return true if the slop threshold has been crossed, false otherwise
- */
- public boolean checkTouchSlop(int directions) {
- final int count = mInitialMotionX.length;
- for (int i = 0; i < count; i++) {
- if (checkTouchSlop(directions, i)) {
- return true;
- }
- }
- return false;
- }
-
- /**
- * Check if the specified pointer tracked in the current gesture has crossed
- * the required slop threshold.
- * <p>
- * <p>This depends on internal state populated by
- * {@link #shouldInterceptTouchEvent(android.view.MotionEvent)} or
- * {@link #processTouchEvent(android.view.MotionEvent)}. You should only rely on
- * the results of this method after all currently available touch data
- * has been provided to one of these two methods.</p>
- *
- * @param directions Combination of direction flags, see {@link #DIRECTION_HORIZONTAL},
- * {@link #DIRECTION_VERTICAL}, {@link #DIRECTION_ALL}
- * @param pointerId ID of the pointer to slop check as specified by MotionEvent
- * @return true if the slop threshold has been crossed, false otherwise
- */
- public boolean checkTouchSlop(int directions, int pointerId) {
- if (!isPointerDown(pointerId)) {
- return false;
+ return 0;
}
-
- final boolean checkHorizontal = (directions & DIRECTION_HORIZONTAL) == DIRECTION_HORIZONTAL;
- final boolean checkVertical = (directions & DIRECTION_VERTICAL) == DIRECTION_VERTICAL;
-
- final float dx = mLastMotionX[pointerId] - mInitialMotionX[pointerId];
- final float dy = mLastMotionY[pointerId] - mInitialMotionY[pointerId];
-
- if (checkHorizontal && checkVertical) {
- return dx * dx + dy * dy > mTouchSlop * mTouchSlop;
- } else if (checkHorizontal) {
- return Math.abs(dx) > mTouchSlop;
- } else if (checkVertical) {
- return Math.abs(dy) > mTouchSlop;
+ if (dx <= mTouchSlop && Math.abs(dy) <= mTouchSlop) {
+ return 0;
+ } else if (dx > mTouchSlop && Math.abs(dy) <= mTouchSlop) {
+ mDragState = STATE_DRAGGING;
+ return 1;
+ } else if (dx <= mTouchSlop && Math.abs(dy) > mTouchSlop) {
+ mDragState = STATE_IDLE;
+ cancel();
+ return -1;
}
- return false;
+ return 2;
}
+ //TODO
/**
* Check if any of the edges specified were initially touched in the currently active gesture.
@@ -1434,7 +1285,8 @@ public class ViewDragHelper implements ViewDragHelperExtras {
final float yvel = clampMag(
mVelocityTracker.getYVelocity(mActivePointerId),
mMinVelocity, mMaxVelocity);
- dispatchViewReleased(xvel, yvel);
+ if (getViewDragState() == STATE_DRAGGING)
+ dispatchViewReleased(xvel, yvel);
}
private void dragTo(int left, int top, int dx, int dy) {
@@ -1482,33 +1334,19 @@ public class ViewDragHelper implements ViewDragHelperExtras {
* @return true if the supplied view is under the given point, false otherwise
*/
public boolean isViewUnder(View view, int x, int y) {
- if (view == null) {
- return false;
- }
- return x >= view.getLeft()
- && x < view.getRight()
- && y >= view.getTop()
- && y < view.getBottom();
+ return view != null;
}
/**
* Find the topmost child under the given point within the parent view's coordinate system.
- * The child order is determined using {@link ViewDragHelper.Callback#getOrderedChildIndex(int)}.
+ * The child order is determined using {@link Callback#getOrderedChildIndex(int)}.
*
* @param x X position to test in the parent's coordinate system
* @param y Y position to test in the parent's coordinate system
* @return The topmost child view under (x, y) or null if none found.
*/
public View findTopChildUnder(int x, int y) {
- final int childCount = mParentView.getChildCount();
- for (int i = childCount - 1; i >= 0; i--) {
- final View child = mParentView.getChildAt(mCallback.getOrderedChildIndex(i));
- if (x >= child.getLeft() && x < child.getRight()
- && y >= child.getTop() && y < child.getBottom()) {
- return child;
- }
- }
- return null;
+ return mParentView.getChildAt(0);
}
private int getEdgesTouched(int x, int y) {
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java b/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java
index a99310f..868dd3f 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java
@@ -26,4 +26,6 @@ interface ViewDragHelperExtras {
float getSensitivity();
+ int STATE_JUDGING = 3;
+
}