Create BounceTouchListener class in the project and use it to add a Bouncy effect to the Transactions items when the user tries to overscroll.
Severiano Jaramillo
parent
5af88291bc
commit
cee1753184
|
|
@ -1,17 +1,20 @@
|
|||
package cy.agorise.bitsybitshareswallet.fragments
|
||||
|
||||
import android.graphics.Point
|
||||
import android.os.Bundle
|
||||
import android.preference.PreferenceManager
|
||||
import android.view.LayoutInflater
|
||||
import android.view.View
|
||||
import android.view.ViewGroup
|
||||
import androidx.fragment.app.Fragment
|
||||
import androidx.fragment.app.FragmentActivity
|
||||
import androidx.lifecycle.Observer
|
||||
import androidx.lifecycle.ViewModelProviders
|
||||
import androidx.recyclerview.widget.LinearLayoutManager
|
||||
import cy.agorise.bitsybitshareswallet.R
|
||||
import cy.agorise.bitsybitshareswallet.adapters.TransfersDetailsAdapter
|
||||
import cy.agorise.bitsybitshareswallet.database.joins.TransferDetail
|
||||
import cy.agorise.bitsybitshareswallet.utils.BounceTouchListener
|
||||
import cy.agorise.bitsybitshareswallet.utils.Constants
|
||||
import cy.agorise.bitsybitshareswallet.viewmodels.TransferDetailViewModel
|
||||
import kotlinx.android.synthetic.main.fragment_transactions.*
|
||||
|
|
@ -20,6 +23,11 @@ class TransactionsFragment : Fragment() {
|
|||
|
||||
private lateinit var mTransferDetailViewModel: TransferDetailViewModel
|
||||
|
||||
/** Variables used for the RecyclerView pull springy animation */
|
||||
private var bounceTouchListener: BounceTouchListener? = null
|
||||
private var pivotY1: Float = 0.toFloat()
|
||||
private var pivotY2:Float = 0.toFloat()
|
||||
|
||||
override fun onCreateView(
|
||||
inflater: LayoutInflater, container: ViewGroup?,
|
||||
savedInstanceState: Bundle?
|
||||
|
|
@ -45,6 +53,45 @@ class TransactionsFragment : Fragment() {
|
|||
mTransferDetailViewModel.getAll(userId).observe(this, Observer<List<TransferDetail>> { transfersDetails ->
|
||||
transfersDetailsAdapter.replaceAll(transfersDetails)
|
||||
})
|
||||
|
||||
rvTransactions.pivotX = getScreenWidth(activity) * 0.5f
|
||||
|
||||
pivotY1 = 0f
|
||||
pivotY2 = getScreenHeight(activity) * .5f
|
||||
|
||||
bounceTouchListener =
|
||||
BounceTouchListener.create(rvTransactions, object : BounceTouchListener.OnTranslateListener {
|
||||
override fun onTranslate(translation: Float) {
|
||||
if (translation > 0) {
|
||||
bounceTouchListener?.setMaxAbsTranslation(-99)
|
||||
rvTransactions.pivotY = pivotY1
|
||||
val scale = 2 * translation / rvTransactions.measuredHeight + 1
|
||||
rvTransactions.scaleY = Math.pow(scale.toDouble(), .6).toFloat()
|
||||
} else {
|
||||
bounceTouchListener?.setMaxAbsTranslation((pivotY2 * .33f).toInt())
|
||||
rvTransactions.pivotY = pivotY2
|
||||
val scale = 2 * translation / rvTransactions.measuredHeight + 1
|
||||
rvTransactions.scaleY = Math.pow(scale.toDouble(), .5).toFloat()
|
||||
}
|
||||
}
|
||||
})
|
||||
|
||||
// Sets custom touch listener to handle bounce/stretch effect
|
||||
rvTransactions.setOnTouchListener(bounceTouchListener)
|
||||
}
|
||||
|
||||
private fun getScreenWidth(activity: FragmentActivity?): Int {
|
||||
val display = activity?.windowManager?.defaultDisplay
|
||||
val size = Point()
|
||||
display?.getSize(size)
|
||||
return size.x
|
||||
}
|
||||
|
||||
private fun getScreenHeight(activity: FragmentActivity?): Int {
|
||||
val display = activity?.windowManager?.defaultDisplay
|
||||
val size = Point()
|
||||
display?.getSize(size)
|
||||
return size.y
|
||||
}
|
||||
|
||||
// override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
|
||||
|
|
|
|||
|
|
@ -0,0 +1,340 @@
|
|||
package cy.agorise.bitsybitshareswallet.utils
|
||||
|
||||
import android.animation.Animator
|
||||
import android.animation.AnimatorListenerAdapter
|
||||
import android.animation.ValueAnimator
|
||||
import android.view.MotionEvent
|
||||
import android.view.View
|
||||
import android.view.ViewGroup
|
||||
import android.view.animation.DecelerateInterpolator
|
||||
import android.widget.ListView
|
||||
import android.widget.ScrollView
|
||||
import androidx.annotation.IdRes
|
||||
import androidx.core.view.MotionEventCompat
|
||||
import androidx.recyclerview.widget.LinearLayoutManager
|
||||
import androidx.recyclerview.widget.RecyclerView
|
||||
import androidx.recyclerview.widget.StaggeredGridLayoutManager
|
||||
|
||||
class BounceTouchListener private constructor(
|
||||
private val mMainView: View,
|
||||
contentResId: Int,
|
||||
private val onTranslateListener: OnTranslateListener?
|
||||
) :
|
||||
View.OnTouchListener {
|
||||
|
||||
private var downCalled = false
|
||||
private val mContent: View
|
||||
private var mDownY: Float = 0.toFloat()
|
||||
private var mSwipingDown: Boolean = false
|
||||
private var mSwipingUp: Boolean = false
|
||||
private val mInterpolator = DecelerateInterpolator(3f)
|
||||
private val swipUpEnabled = true
|
||||
private var mActivePointerId = -99
|
||||
private var mLastTouchY = -99f
|
||||
private var mMaxAbsTranslation = -99
|
||||
|
||||
|
||||
init {
|
||||
mContent = if (contentResId == -1) mMainView else mMainView.findViewById(contentResId)
|
||||
}
|
||||
|
||||
override fun onTouch(view: View, motionEvent: MotionEvent): Boolean {
|
||||
val action = MotionEventCompat.getActionMasked(motionEvent)
|
||||
|
||||
when (action) {
|
||||
MotionEvent.ACTION_DOWN -> {
|
||||
run {
|
||||
onDownMotionEvent(motionEvent)
|
||||
view.onTouchEvent(motionEvent)
|
||||
downCalled = true
|
||||
if (mContent.translationY == 0f) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
run {
|
||||
if (mActivePointerId == -99) {
|
||||
onDownMotionEvent(motionEvent)
|
||||
downCalled = true
|
||||
}
|
||||
val pointerIndex = MotionEventCompat.findPointerIndex(motionEvent, mActivePointerId)
|
||||
val y = MotionEventCompat.getY(motionEvent, pointerIndex)
|
||||
|
||||
if (!hasHitTop() && !hasHitBottom() || !downCalled) {
|
||||
if (!downCalled) {
|
||||
downCalled = true
|
||||
}
|
||||
mDownY = y
|
||||
view.onTouchEvent(motionEvent)
|
||||
return false
|
||||
}
|
||||
|
||||
val deltaY = y - mDownY
|
||||
if (Math.abs(deltaY) > 0 && hasHitTop() && deltaY > 0) {
|
||||
mSwipingDown = true
|
||||
sendCancelEventToView(view, motionEvent)
|
||||
}
|
||||
if (swipUpEnabled) {
|
||||
if (Math.abs(deltaY) > 0 && hasHitBottom() && deltaY < 0) {
|
||||
mSwipingUp = true
|
||||
sendCancelEventToView(view, motionEvent)
|
||||
}
|
||||
}
|
||||
if (mSwipingDown || mSwipingUp) {
|
||||
if (deltaY <= 0 && mSwipingDown || deltaY >= 0 && mSwipingUp) {
|
||||
mDownY = 0f
|
||||
mSwipingDown = false
|
||||
mSwipingUp = false
|
||||
downCalled = false
|
||||
val downEvent = MotionEvent.obtain(motionEvent)
|
||||
downEvent.action = MotionEvent.ACTION_DOWN or
|
||||
(MotionEventCompat.getActionIndex(motionEvent) shl MotionEventCompat.ACTION_POINTER_INDEX_SHIFT)
|
||||
view.onTouchEvent(downEvent)
|
||||
}
|
||||
var translation =
|
||||
(deltaY / Math.abs(deltaY) * Math.pow(Math.abs(deltaY).toDouble(), .8)).toInt()
|
||||
if (mMaxAbsTranslation > 0) {
|
||||
if (translation < 0) {
|
||||
translation = Math.max(-mMaxAbsTranslation, translation)
|
||||
} else {
|
||||
translation = Math.min(mMaxAbsTranslation, translation)
|
||||
}
|
||||
}
|
||||
mContent.translationY = translation.toFloat()
|
||||
onTranslateListener?.onTranslate(mContent.translationY)
|
||||
|
||||
return true
|
||||
}
|
||||
}
|
||||
}
|
||||
MotionEvent.ACTION_MOVE -> {
|
||||
if (mActivePointerId == -99) {
|
||||
onDownMotionEvent(motionEvent)
|
||||
downCalled = true
|
||||
}
|
||||
val pointerIndex = MotionEventCompat.findPointerIndex(motionEvent, mActivePointerId)
|
||||
val y = MotionEventCompat.getY(motionEvent, pointerIndex)
|
||||
if (!hasHitTop() && !hasHitBottom() || !downCalled) {
|
||||
if (!downCalled) {
|
||||
downCalled = true
|
||||
}
|
||||
mDownY = y
|
||||
view.onTouchEvent(motionEvent)
|
||||
return false
|
||||
}
|
||||
val deltaY = y - mDownY
|
||||
if (Math.abs(deltaY) > 0 && hasHitTop() && deltaY > 0) {
|
||||
mSwipingDown = true
|
||||
sendCancelEventToView(view, motionEvent)
|
||||
}
|
||||
if (swipUpEnabled) {
|
||||
if (Math.abs(deltaY) > 0 && hasHitBottom() && deltaY < 0) {
|
||||
mSwipingUp = true
|
||||
sendCancelEventToView(view, motionEvent)
|
||||
}
|
||||
}
|
||||
if (mSwipingDown || mSwipingUp) {
|
||||
if (deltaY <= 0 && mSwipingDown || deltaY >= 0 && mSwipingUp) {
|
||||
mDownY = 0f
|
||||
mSwipingDown = false
|
||||
mSwipingUp = false
|
||||
downCalled = false
|
||||
val downEvent = MotionEvent.obtain(motionEvent)
|
||||
downEvent.action = MotionEvent.ACTION_DOWN or
|
||||
(MotionEventCompat.getActionIndex(motionEvent) shl MotionEventCompat.ACTION_POINTER_INDEX_SHIFT)
|
||||
view.onTouchEvent(downEvent)
|
||||
}
|
||||
var translation = (deltaY / Math.abs(deltaY) * Math.pow(Math.abs(deltaY).toDouble(), .8)).toInt()
|
||||
if (mMaxAbsTranslation > 0) {
|
||||
if (translation < 0) {
|
||||
translation = Math.max(-mMaxAbsTranslation, translation)
|
||||
} else {
|
||||
translation = Math.min(mMaxAbsTranslation, translation)
|
||||
}
|
||||
}
|
||||
mContent.translationY = translation.toFloat()
|
||||
onTranslateListener?.onTranslate(mContent.translationY)
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
MotionEvent.ACTION_UP -> {
|
||||
mActivePointerId = -99
|
||||
// cancel
|
||||
mContent.animate()
|
||||
.setInterpolator(mInterpolator)
|
||||
.translationY(0f)
|
||||
.setDuration(DEFAULT_ANIMATION_TIME)
|
||||
.setListener(object : AnimatorListenerAdapter() {
|
||||
override fun onAnimationStart(animation: Animator) {
|
||||
(animation as ValueAnimator).addUpdateListener {
|
||||
onTranslateListener?.onTranslate(mContent.translationY)
|
||||
}
|
||||
super.onAnimationStart(animation)
|
||||
}
|
||||
})
|
||||
|
||||
mDownY = 0f
|
||||
mSwipingDown = false
|
||||
mSwipingUp = false
|
||||
downCalled = false
|
||||
}
|
||||
|
||||
MotionEvent.ACTION_CANCEL -> {
|
||||
mActivePointerId = -99
|
||||
}
|
||||
|
||||
MotionEvent.ACTION_POINTER_UP -> {
|
||||
val pointerIndex = MotionEventCompat.getActionIndex(motionEvent)
|
||||
val pointerId = MotionEventCompat.getPointerId(motionEvent, pointerIndex)
|
||||
|
||||
if (pointerId == mActivePointerId) {
|
||||
val newPointerIndex = if (pointerIndex == 0) 1 else 0
|
||||
mLastTouchY = MotionEventCompat.getY(motionEvent, newPointerIndex)
|
||||
mActivePointerId = MotionEventCompat.getPointerId(motionEvent, newPointerIndex)
|
||||
|
||||
if (mContent.translationY > 0) {
|
||||
mDownY = mLastTouchY - Math.pow(mContent.translationY.toDouble(), (10f / 8f).toDouble()).toInt()
|
||||
mContent.animate().cancel()
|
||||
} else if (mContent.translationY < 0) {
|
||||
mDownY = mLastTouchY +
|
||||
Math.pow((-mContent.translationY).toDouble(), (10f / 8f).toDouble()).toInt()
|
||||
mContent.animate().cancel()
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
private fun sendCancelEventToView(view: View, motionEvent: MotionEvent) {
|
||||
(view as ViewGroup).requestDisallowInterceptTouchEvent(true)
|
||||
val cancelEvent = MotionEvent.obtain(motionEvent)
|
||||
cancelEvent.action = MotionEvent.ACTION_CANCEL or
|
||||
(MotionEventCompat.getActionIndex(motionEvent) shl MotionEventCompat.ACTION_POINTER_INDEX_SHIFT)
|
||||
view.onTouchEvent(cancelEvent)
|
||||
}
|
||||
|
||||
private fun onDownMotionEvent(motionEvent: MotionEvent) {
|
||||
val pointerIndex = MotionEventCompat.getActionIndex(motionEvent)
|
||||
mLastTouchY = MotionEventCompat.getY(motionEvent, pointerIndex)
|
||||
mActivePointerId = MotionEventCompat.getPointerId(motionEvent, 0)
|
||||
|
||||
if (mContent.translationY > 0) {
|
||||
mDownY = mLastTouchY - Math.pow(mContent.translationY.toDouble(), (10f / 8f).toDouble()).toInt()
|
||||
mContent.animate().cancel()
|
||||
} else if (mContent.translationY < 0) {
|
||||
mDownY = mLastTouchY + Math.pow((-mContent.translationY).toDouble(), (10f / 8f).toDouble()).toInt()
|
||||
mContent.animate().cancel()
|
||||
} else {
|
||||
mDownY = mLastTouchY
|
||||
}
|
||||
}
|
||||
|
||||
private fun hasHitBottom(): Boolean {
|
||||
if (mMainView is ScrollView) {
|
||||
val scrollView = mMainView
|
||||
val view = scrollView.getChildAt(scrollView.childCount - 1)
|
||||
val diff = view.bottom - (scrollView.height + scrollView.scrollY)// Calculate the scrolldiff
|
||||
return diff == 0
|
||||
} else if (mMainView is ListView) {
|
||||
val listView = mMainView
|
||||
if (listView.adapter != null) {
|
||||
if (listView.adapter.count > 0) {
|
||||
return listView.lastVisiblePosition == listView.adapter.count - 1 && listView.getChildAt(listView.childCount - 1).bottom <= listView.height
|
||||
}
|
||||
}
|
||||
} else if (mMainView is RecyclerView) {
|
||||
val recyclerView = mMainView
|
||||
if (recyclerView.adapter != null && recyclerView.layoutManager != null) {
|
||||
val adapter = recyclerView.adapter
|
||||
if (adapter!!.itemCount > 0) {
|
||||
val layoutManager = recyclerView.layoutManager
|
||||
if (layoutManager is LinearLayoutManager) {
|
||||
val linearLayoutManager = layoutManager as LinearLayoutManager?
|
||||
return linearLayoutManager!!.findLastCompletelyVisibleItemPosition() == adapter.itemCount - 1
|
||||
} else if (layoutManager is StaggeredGridLayoutManager) {
|
||||
val staggeredGridLayoutManager = layoutManager as StaggeredGridLayoutManager?
|
||||
val checks = staggeredGridLayoutManager!!.findLastCompletelyVisibleItemPositions(null)
|
||||
for (check in checks) {
|
||||
if (check == adapter.itemCount - 1)
|
||||
return true
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
private fun hasHitTop(): Boolean {
|
||||
if (mMainView is ScrollView) {
|
||||
return mMainView.scrollY == 0
|
||||
} else if (mMainView is ListView) {
|
||||
val listView = mMainView
|
||||
if (listView.adapter != null) {
|
||||
if (listView.adapter.count > 0) {
|
||||
return listView.firstVisiblePosition == 0 && listView.getChildAt(0).top >= 0
|
||||
}
|
||||
}
|
||||
} else if (mMainView is RecyclerView) {
|
||||
val recyclerView = mMainView
|
||||
if (recyclerView.adapter != null && recyclerView.layoutManager != null) {
|
||||
val adapter = recyclerView.adapter
|
||||
if (adapter!!.itemCount > 0) {
|
||||
val layoutManager = recyclerView.layoutManager
|
||||
if (layoutManager is LinearLayoutManager) {
|
||||
val linearLayoutManager = layoutManager as LinearLayoutManager?
|
||||
return linearLayoutManager!!.findFirstCompletelyVisibleItemPosition() == 0
|
||||
} else if (layoutManager is StaggeredGridLayoutManager) {
|
||||
val staggeredGridLayoutManager = layoutManager as StaggeredGridLayoutManager?
|
||||
val checks = staggeredGridLayoutManager!!.findFirstCompletelyVisibleItemPositions(null)
|
||||
for (check in checks) {
|
||||
if (check == 0)
|
||||
return true
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
fun setMaxAbsTranslation(maxAbsTranslation: Int) {
|
||||
this.mMaxAbsTranslation = maxAbsTranslation
|
||||
}
|
||||
|
||||
interface OnTranslateListener {
|
||||
fun onTranslate(translation: Float)
|
||||
}
|
||||
|
||||
companion object {
|
||||
private val DEFAULT_ANIMATION_TIME = 600L
|
||||
|
||||
/**
|
||||
* Creates a new BounceTouchListener
|
||||
*
|
||||
* @param mainScrollableView The main view that this touch listener is attached to
|
||||
* @param onTranslateListener To perform action on translation, can be null if not needed
|
||||
* @return A new BounceTouchListener attached to the given scrollable view
|
||||
*/
|
||||
fun create(mainScrollableView: View, onTranslateListener: OnTranslateListener?): BounceTouchListener {
|
||||
return create(mainScrollableView, -1, onTranslateListener)
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a new BounceTouchListener
|
||||
*
|
||||
* @param mainView The main view that this touch listener is attached to
|
||||
* @param contentResId Resource Id of the scrollable view
|
||||
* @param onTranslateListener To perform action on translation, can be null if not needed
|
||||
* @return A new BounceTouchListener attached to the given scrollable view
|
||||
*/
|
||||
fun create(
|
||||
mainView: View, @IdRes contentResId: Int,
|
||||
onTranslateListener: OnTranslateListener?
|
||||
): BounceTouchListener {
|
||||
return BounceTouchListener(mainView, contentResId, onTranslateListener)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1,18 +1,12 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<LinearLayout
|
||||
xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"
|
||||
android:orientation="vertical"
|
||||
<androidx.recyclerview.widget.RecyclerView
|
||||
xmlns:android="http://schemas.android.com/apk/res/android"
|
||||
xmlns:tools="http://schemas.android.com/tools"
|
||||
android:id="@+id/rvTransactions"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="match_parent">
|
||||
|
||||
<androidx.recyclerview.widget.RecyclerView
|
||||
android:id="@+id/rvTransactions"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:padding="@dimen/card_margin"
|
||||
android:clipToPadding="false"
|
||||
tools:listitem="@layout/item_transaction"
|
||||
tools:itemCount="6"
|
||||
android:layoutAnimation="@anim/layout_animation_from_bottom"/>
|
||||
|
||||
</LinearLayout>
|
||||
android:layout_height="match_parent"
|
||||
android:padding="@dimen/card_margin"
|
||||
android:clipToPadding="false"
|
||||
tools:listitem="@layout/item_transaction"
|
||||
tools:itemCount="6"
|
||||
android:layoutAnimation="@anim/layout_animation_from_bottom"/>
|
||||
Loading…
Reference in New Issue