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authorAllan Wang <me@allanwang.ca>2017-07-05 21:17:03 -0700
committerAllan Wang <me@allanwang.ca>2017-07-05 21:17:03 -0700
commit82a98786f301cd8e7fcafc44bf760f0434bd2eb2 (patch)
treefee179c415d719123cadb494bb84c2d5785a5657 /core/src/main/kotlin
parent9bc520fc9041fed26ef965ef2420a0552ccc20d6 (diff)
downloadkau-82a98786f301cd8e7fcafc44bf760f0434bd2eb2.tar.gz
kau-82a98786f301cd8e7fcafc44bf760f0434bd2eb2.tar.bz2
kau-82a98786f301cd8e7fcafc44bf760f0434bd2eb2.zip
Bring back swipe
Diffstat (limited to 'core/src/main/kotlin')
-rw-r--r--core/src/main/kotlin/ca/allanwang/kau/swipe/RelativeSlider.kt4
-rw-r--r--core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackHelper.kt31
-rw-r--r--core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt160
-rw-r--r--core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackPage.kt6
-rw-r--r--core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeListener.kt9
-rw-r--r--core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java2
-rw-r--r--core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java3
7 files changed, 111 insertions, 104 deletions
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/RelativeSlider.kt b/core/src/main/kotlin/ca/allanwang/kau/swipe/RelativeSlider.kt
index 2bbe9b0..2ffb2ef 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/RelativeSlider.kt
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/RelativeSlider.kt
@@ -4,6 +4,10 @@ import ca.allanwang.kau.kotlin.nonReadable
/**
* Created by Mr.Jude on 2015/8/26.
+ *
+ * Updated by Allan Wang on 2017/07/05
+ *
+ * Helper class to give the previous activity an offset as the main page is pulled
*/
class RelativeSlider(var curPage: SwipeBackPage) : SwipeListener {
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackHelper.kt b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackHelper.kt
index 92cdd7c..b24c7d8 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackHelper.kt
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackHelper.kt
@@ -2,11 +2,16 @@ package ca.allanwang.kau.swipe
import android.app.Activity
import ca.allanwang.kau.R
-import ca.allanwang.kau.logging.KL
+import ca.allanwang.kau.swipe.SwipeBackHelper.onDestroy
import java.util.*
-class SwipeBackException(message: String = "You Should call SwipeBackHelper.onCreate(activity) first") : RuntimeException(message)
+class SwipeBackException(message: String = "You Should call kauSwipeOnCreate() first") : RuntimeException(message)
+/**
+ * Singleton to hold our swipe stack
+ * All activity pages held with strong references, so it is crucial to call
+ * [onDestroy] whenever an activity should be disposed
+ */
object SwipeBackHelper {
private val pageStack = Stack<SwipeBackPage>()
@@ -16,7 +21,7 @@ object SwipeBackHelper {
fun getCurrentPage(activity: Activity): SwipeBackPage = this[activity]
- fun onCreate(activity: Activity, builder: SwipeBackPage.() -> Unit = {}) {
+ fun onCreate(activity: Activity, builder: SwipeBackContract.() -> Unit = {}) {
val page = pageStack.firstOrNull { it.activity === activity } ?: pageStack.push(SwipeBackPage(activity).apply { builder() })
val startAnimation: Int = with(page.edgeFlag) {
if (this and SWIPE_EDGE_LEFT > 0) R.anim.kau_slide_in_right
@@ -30,7 +35,6 @@ object SwipeBackHelper {
fun onPostCreate(activity: Activity) = this[activity].onPostCreate()
fun onDestroy(activity: Activity) {
- KL.d("Swipe destroy")
val page: SwipeBackPage = this[activity]
pageStack.remove(page)
page.activity = null
@@ -45,21 +49,24 @@ object SwipeBackHelper {
}
-fun Activity.kauSwipeOnCreate(builder: SwipeBackPage.() -> Unit = {}) = SwipeBackHelper.onCreate(this, builder)
+/**
+ * The following are the activity bindings to add an activity to the stack
+ * onCreate, onPostCreate, and onDestroy are mandatory
+ * finish is there as a helper method to animate the transaction
+ */
+fun Activity.kauSwipeOnCreate(builder: SwipeBackContract.() -> Unit = {}) = SwipeBackHelper.onCreate(this, builder)
+
fun Activity.kauSwipeOnPostCreate() = SwipeBackHelper.onPostCreate(this)
fun Activity.kauSwipeOnDestroy() = SwipeBackHelper.onDestroy(this)
fun Activity.kauSwipeFinish() = SwipeBackHelper.finish(this)
+/**
+ * Constants used for the swipe edge flags
+ */
const val SWIPE_EDGE_LEFT = ViewDragHelper.EDGE_LEFT
const val SWIPE_EDGE_RIGHT = ViewDragHelper.EDGE_RIGHT
const val SWIPE_EDGE_TOP = ViewDragHelper.EDGE_TOP
-const val SWIPE_EDGE_BOTTOM = ViewDragHelper.EDGE_BOTTOM
-
-const val SWIPE_EDGE_HORIZONTAL = SWIPE_EDGE_LEFT or SWIPE_EDGE_RIGHT
-
-const val SWIPE_EDGE_VERTICAL = SWIPE_EDGE_TOP or SWIPE_EDGE_BOTTOM
-
-const val SWIPE_EDGE_ALL = SWIPE_EDGE_HORIZONTAL or SWIPE_EDGE_VERTICAL \ No newline at end of file
+const val SWIPE_EDGE_BOTTOM = ViewDragHelper.EDGE_BOTTOM \ No newline at end of file
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 9d5fc72..22de709 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt
@@ -3,7 +3,6 @@ package ca.allanwang.kau.swipe
import android.app.Activity
import android.content.Context
import android.graphics.Canvas
-import android.graphics.Color
import android.support.v4.view.ViewCompat
import android.util.AttributeSet
import android.view.MotionEvent
@@ -11,11 +10,18 @@ import android.view.View
import android.view.ViewGroup
import android.widget.FrameLayout
import ca.allanwang.kau.logging.KL
+import ca.allanwang.kau.utils.adjustAlpha
import ca.allanwang.kau.utils.navigationBarColor
import ca.allanwang.kau.utils.statusBarColor
-import ca.allanwang.kau.utils.withAlpha
import java.lang.ref.WeakReference
+/**
+ * The layout that handles all the touch events
+ * Note that this differs from [ca.allanwang.kau.widgets.ElasticDragDismissFrameLayout]
+ * in that nested scrolling isn't considered
+ * If an edge detection occurs, this layout consumes all the touch events
+ * Use the [swipeEnabled] toggle if you need the scroll events on the same axis
+ */
class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyle: Int = 0
) : FrameLayout(context, attrs, defStyle), SwipeBackContract {
@@ -35,8 +41,8 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
set(value) {
field = value
if (value != null) {
- statusBarAlpha = Color.alpha(value.statusBarColor)
- navBarAlpha = Color.alpha(value.navigationBarColor)
+ statusBarBase = value.statusBarColor
+ navBarBase = value.navigationBarColor
}
}
@@ -71,15 +77,16 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
invalidate()
}
- private var statusBarAlpha: Int = 255
- private var navBarAlpha: Int = 255
+ private var statusBarBase: Int = 0
+ private var navBarBase: Int = 0
val chromeFadeListener: SwipeListener by lazy {
object : SwipeListener {
override fun onScroll(percent: Float, px: Int, edgeFlag: Int) {
+ KL.d("PER $percent")
activity?.apply {
- if (edgeCurrentFlag != SWIPE_EDGE_TOP) statusBarColor = statusBarColor.withAlpha((statusBarAlpha * (1 - percent)).toInt())
- if (edgeCurrentFlag != SWIPE_EDGE_BOTTOM) navigationBarColor = navigationBarColor.withAlpha((navBarAlpha * (1 - percent)).toInt())
+ statusBarColor = statusBarBase.adjustAlpha(scrimOpacity)
+ navigationBarColor = navBarBase.adjustAlpha(scrimOpacity)
}
}
@@ -104,27 +111,26 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
* We will verify that only one axis is used at a time
*/
set(value) {
+ if (value !in arrayOf(SWIPE_EDGE_TOP, SWIPE_EDGE_BOTTOM, SWIPE_EDGE_LEFT, SWIPE_EDGE_RIGHT))
+ throw SwipeBackException("Edge flag is not valid; use one of the SWIPE_EDGE_* values")
field = value
+ horizontal = edgeFlag == SWIPE_EDGE_LEFT || edgeFlag == SWIPE_EDGE_RIGHT
dragHelper.setEdgeTrackingEnabled(value)
}
- private val isHorizontal: Boolean
- get() = edgeFlag and SWIPE_EDGE_HORIZONTAL > 0
+ private var horizontal = true
- private val isVertical: Boolean
- get() = edgeFlag and SWIPE_EDGE_VERTICAL > 0
-
-
- /**
- * Specifies the edge flag that should by considered at the current moment
- */
- private var edgeCurrentFlag: Int = 0
-
- private val isCurrentlyHorizontal: Boolean
- get() = edgeCurrentFlag and SWIPE_EDGE_HORIZONTAL > 0
+ override var minVelocity: Float
+ get() = dragHelper.minVelocity
+ set(value) {
+ dragHelper.minVelocity = value
+ }
- private val isCurrentlyVertical: Boolean
- get() = edgeCurrentFlag and SWIPE_EDGE_VERTICAL > 0
+ override var maxVelocity: Float
+ get() = dragHelper.maxVelocity
+ set(value) {
+ dragHelper.maxVelocity = value
+ }
init {
dragHelper = ViewDragHelper.create(this, ViewDragCallback())
@@ -132,8 +138,8 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
val minVel = MIN_FLING_VELOCITY * density
//allow touch from anywhere on the screen
edgeSize = Math.max(resources.displayMetrics.widthPixels, resources.displayMetrics.heightPixels)
- dragHelper.minVelocity = minVel
- dragHelper.maxVelocity = 2 * minVel
+ minVelocity = minVel
+ maxVelocity = 2.5f * minVel
edgeFlag = edgeFlag
addListener(chromeFadeListener)
}
@@ -148,18 +154,6 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
contentView = view
}
- /**
- * Set the size of an edge. This is the range in pixels along the edges of
- * this view that will actively detect edge touches or drags if edge
- * tracking is enabled.
-
- * @param swipeEdge The size of an edge in pixels
- */
- // override fun setEdgeSize(swipeEdge: Int) {
-// trackingEdge = swipeEdge
-// }
-
-
override fun setEdgeSizePercent(swipeEdgePercent: Float) {
edgeSize = (resources.displayMetrics.widthPixels * swipeEdgePercent).toInt()
}
@@ -214,7 +208,7 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
inLayout = true
val xOffset: Int
val yOffset: Int
- if (isCurrentlyHorizontal) {
+ if (horizontal) {
xOffset = contentOffset
yOffset = 0
} else {
@@ -238,13 +232,20 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
}
private fun drawScrim(canvas: Canvas, child: View) {
- val baseAlpha = (scrimColor and 0xff000000.toInt()).ushr(24)
- val alpha = (baseAlpha * scrimOpacity).toInt()
- val color = alpha shl 24 or (scrimColor and 0xffffff)
- canvas.clipRect(0, 0, width, height)
+ val color = scrimColor.adjustAlpha(scrimOpacity)
+ when (edgeFlag) {
+ SWIPE_EDGE_LEFT -> canvas.clipRect(0, 0, child.left, height)
+ SWIPE_EDGE_RIGHT -> canvas.clipRect(child.right, 0, width, height)
+ SWIPE_EDGE_TOP -> canvas.clipRect(0, 0, width, child.top)
+ SWIPE_EDGE_BOTTOM -> canvas.clipRect(0, child.bottom, width, height)
+ }
canvas.drawColor(color)
}
+ /**
+ * Extract content view, and move it from its parent to our view
+ * Then add our view to the content frame
+ */
fun attachToActivity(activity: Activity) {
if (parent != null) return
this.activity = activity
@@ -252,24 +253,25 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
val background = a.getResourceId(0, 0)
a.recycle()
- val decor = activity.window.decorView as ViewGroup
- var decorChild = decor.findViewById<View>(android.R.id.content)
- while (decorChild.parent !== decor)
- decorChild = decorChild.parent as View
- decorChild.setBackgroundResource(background)
- decor.removeView(decorChild)
- addView(decorChild)
- setContentView(decorChild)
- decor.addView(this)
+ val content = activity.window.decorView.findViewById<ViewGroup>(android.R.id.content)
+ val contentChild = content.getChildAt(0)
+ contentChild.setBackgroundResource(background)
+ content.removeView(contentChild)
+ addView(contentChild)
+ setContentView(contentChild)
+ content.addView(this)
}
+ /**
+ * Remove ourselves from the viewstack
+ */
fun removeFromActivity(activity: Activity) {
if (parent == null) return
- val decorChild = getChildAt(0) as ViewGroup
- val decor = activity.window.decorView as ViewGroup
- decor.removeView(this)
- removeView(decorChild)
- decor.addView(decorChild)
+ val contentChild = getChildAt(0)
+ val content = activity.window.decorView.findViewById<ViewGroup>(android.R.id.content)
+ content.removeView(this)
+ removeView(contentChild)
+ content.addView(contentChild)
}
override fun computeScroll() {
@@ -296,42 +298,35 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
* Needs to be bigger than 0 to specify that scrolling is possible horizontally
*/
override fun getViewHorizontalDragRange(child: View): Int {
- return if (isHorizontal) 1 else 0
+ return if (horizontal) 1 else 0
}
/**
* Needs to be bigger than 0 to specify that scrolling is possible vertically
*/
override fun getViewVerticalDragRange(child: View): Int {
- return if (isVertical) 1 else 0
+ return if (!horizontal) 1 else 0
}
override fun onViewPositionChanged(changedView: View, left: Int, top: Int, dx: Int, dy: Int) {
super.onViewPositionChanged(changedView, left, top, dx, dy)
//make sure that we are using the proper axis
- val horizontal = (isHorizontal && (!isVertical || dy == 0))
- edgeCurrentFlag =
- if (horizontal)
- if (left > 0) SWIPE_EDGE_LEFT else SWIPE_EDGE_RIGHT
- else
- if (top > 0) SWIPE_EDGE_BOTTOM else SWIPE_EDGE_TOP
-
scrollPercent = Math.abs(
if (horizontal) left.toFloat() / contentView!!.width
else (top.toFloat() / contentView!!.height))
contentOffset = if (horizontal) left else top
- KL.d("poz $horizontal $scrollPercent $contentOffset")
invalidate()
if (scrollPercent < scrollThreshold && !isScrollOverValid)
isScrollOverValid = true
- listeners.forEach { it.get()?.onScroll(scrollPercent, contentOffset, edgeCurrentFlag) }
+ if (scrollPercent <= 1)
+ listeners.forEach { it.get()?.onScroll(scrollPercent, contentOffset, edgeFlag) }
if (scrollPercent >= 1) {
if (!(activity?.isFinishing ?: true)) {
if (scrollPercent >= scrollThreshold && isScrollOverValid) {
isScrollOverValid = false
- listeners.forEach { it.get()?.onScrollToClose(edgeCurrentFlag) }
+ listeners.forEach { it.get()?.onScrollToClose(edgeFlag) }
}
activity?.finish()
activity?.overridePendingTransition(0, 0)
@@ -341,21 +336,19 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
override fun onViewReleased(releasedChild: View, xvel: Float, yvel: Float) {
var result = Pair(0, 0)
- KL.d("Release $edgeCurrentFlag $xvel $yvel")
if (scrollPercent <= scrollThreshold) {
//threshold not met; check velocities
- if ((edgeCurrentFlag == SWIPE_EDGE_LEFT && xvel > MIN_FLING_VELOCITY)
- || (edgeCurrentFlag == SWIPE_EDGE_RIGHT && xvel < -MIN_FLING_VELOCITY)
- || (edgeCurrentFlag == SWIPE_EDGE_TOP && yvel < -MIN_FLING_VELOCITY)
- || (edgeCurrentFlag == SWIPE_EDGE_BOTTOM && yvel > MIN_FLING_VELOCITY))
- result = exitCaptureOffsets(edgeCurrentFlag, releasedChild)
+ if ((edgeFlag == SWIPE_EDGE_LEFT && xvel > MIN_FLING_VELOCITY)
+ || (edgeFlag == SWIPE_EDGE_RIGHT && xvel < -MIN_FLING_VELOCITY)
+ || (edgeFlag == SWIPE_EDGE_TOP && yvel > MIN_FLING_VELOCITY)
+ || (edgeFlag == SWIPE_EDGE_BOTTOM && yvel < -MIN_FLING_VELOCITY))
+ result = exitCaptureOffsets(edgeFlag, releasedChild)
} else {
//threshold met; fling to designated side
- result = exitCaptureOffsets(edgeCurrentFlag, releasedChild)
+ result = exitCaptureOffsets(edgeFlag, releasedChild)
}
dragHelper.settleCapturedViewAt(result.first, result.second)
invalidate()
- edgeCurrentFlag = 0
}
private fun exitCaptureOffsets(edgeFlag: Int, view: View): Pair<Int, Int> {
@@ -364,25 +357,22 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
when (edgeFlag) {
SWIPE_EDGE_LEFT -> left = view.width + OVERSCROLL_DISTANCE
SWIPE_EDGE_RIGHT -> left = -(view.width + OVERSCROLL_DISTANCE)
- SWIPE_EDGE_TOP -> top = -(view.height + OVERSCROLL_DISTANCE)
- SWIPE_EDGE_BOTTOM -> top = view.height + OVERSCROLL_DISTANCE
- else -> KL.e("Unknown edgeCurrentFlag $edgeCurrentFlag")
+ SWIPE_EDGE_TOP -> top = view.height + OVERSCROLL_DISTANCE
+ SWIPE_EDGE_BOTTOM -> top = -(view.height + OVERSCROLL_DISTANCE)
}
return Pair(left, top)
}
override fun clampViewPositionHorizontal(child: View, left: Int, dx: Int): Int {
- return if (!isHorizontal || isCurrentlyVertical) 0
- else if (edgeFlag == SWIPE_EDGE_RIGHT) Math.min(0, Math.max(left, -child.width))
+ return if (edgeFlag == SWIPE_EDGE_RIGHT) Math.min(0, Math.max(left, -child.width))
else if (edgeFlag == SWIPE_EDGE_LEFT) Math.min(child.width, Math.max(left, 0))
- else Math.max(left, -child.width)
+ else 0
}
override fun clampViewPositionVertical(child: View, top: Int, dy: Int): Int {
- return if (!isVertical || isCurrentlyHorizontal) 0
- else if (edgeFlag == SWIPE_EDGE_BOTTOM) Math.min(0, Math.max(top, -child.height))
+ return if (edgeFlag == SWIPE_EDGE_BOTTOM) Math.min(0, Math.max(top, -child.height))
else if (edgeFlag == SWIPE_EDGE_TOP) Math.min(child.height, Math.max(top, 0))
- else Math.max(top, -child.height)
+ else 0
}
}
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackPage.kt b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackPage.kt
index 4185f30..761e565 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackPage.kt
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackPage.kt
@@ -4,7 +4,6 @@ import android.app.Activity
import android.graphics.Color
import android.graphics.drawable.ColorDrawable
import android.view.ViewGroup
-import ca.allanwang.kau.logging.KL
/**
* Created by Mr.Jude on 2015/8/3.
@@ -38,7 +37,6 @@ class SwipeBackPage(activity: Activity) : SwipeBackContract by SwipeBackLayout(a
}
private fun handleLayout() {
- KL.d("Handle layout")
if (swipeEnabled) swipeBackLayout.attachToActivity(activity!!)
else swipeBackLayout.removeFromActivity(activity!!)
}
@@ -57,9 +55,11 @@ interface SwipeBackContract {
var scrimColor: Int
val swipeBackLayout: SwipeBackLayout
var edgeSize: Int
- var edgeFlag:Int
+ var edgeFlag: Int
var scrollThreshold: Float
var disallowIntercept: Boolean
+ var minVelocity: Float
+ var maxVelocity: Float
fun setEdgeSizePercent(swipeEdgePercent: Float)
fun addListener(listener: SwipeListener)
fun removeListener(listener: SwipeListener)
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeListener.kt b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeListener.kt
index 71771a8..36a4445 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeListener.kt
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeListener.kt
@@ -1,10 +1,17 @@
package ca.allanwang.kau.swipe
interface SwipeListener {
+ /**
+ * Invoked as the page is scrolled
+ * Percent is capped at 1.0, even if there is a slight overscroll for the pages
+ */
fun onScroll(percent: Float, px: Int, edgeFlag: Int)
+ /**
+ * Invoked when page first consumes the scroll events
+ */
fun onEdgeTouch()
/**
- * Invoke when scroll percent over the threshold for the first time
+ * Invoked when scroll percent over the threshold for the first time
*/
fun onScrollToClose(edgeFlag: Int)
} \ No newline at end of file
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 ad17366..db51ec1 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java
@@ -23,7 +23,7 @@ import java.util.Arrays;
* views within their parent ViewGroup.
* <p>
* This is an extension of {@link android.support.v4.widget.ViewDragHelper}
- * Along with additional methods defined in
+ * Along with additional methods defined in {@link ViewDragHelperExtras}
*/
public class ViewDragHelper implements ViewDragHelperExtras {
private static final String TAG = "ViewDragHelper";
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 638f2fa..2ee7ea3 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java
@@ -6,8 +6,7 @@ package ca.allanwang.kau.swipe;
* Collection of addition methods added into ViewDragHelper that weren't in the original
*/
-public interface ViewDragHelperExtras {
-
+interface ViewDragHelperExtras {
/**
* Sets the new size of a given edge