up

app/src/main/java/io/legado/app/ui/widget/page/ContentTextView.kt

@@ -30,7 +30,6 @@ class ContentTextView : AppCompatTextView {
     private val mViewFling: ViewFling by lazy { ViewFling() }
     private var velocityTracker: VelocityTracker? = null
     private var mScrollState = scrollStateIdle
-    private var mScrollPointerId = -1
     private var mLastTouchY: Int = 0
     private var mTouchSlop: Int = 0
     private var mMinFlingVelocity: Int = 0
@@ -111,7 +110,6 @@ class ContentTextView : AppCompatTextView {
     override fun onTouchEvent(event: MotionEvent?): Boolean {
         event?.let {
             val action = event.action
-            val actionIndex = event.actionIndex
             val vtEvent = MotionEvent.obtain(event)
 
             if (velocityTracker == null) {
@@ -121,17 +119,10 @@ class ContentTextView : AppCompatTextView {
             when (action) {
                 MotionEvent.ACTION_DOWN -> {
                     setScrollState(scrollStateIdle)
-                    mScrollPointerId = event.getPointerId(0)
                     mLastTouchY = (event.y + 0.5f).toInt()
                 }
-                MotionEvent.ACTION_POINTER_DOWN -> {
-                    mScrollPointerId = event.getPointerId(actionIndex)
-                    mLastTouchY = (event.getY(actionIndex) + 0.5f).toInt()
-                }
                 MotionEvent.ACTION_MOVE -> {
-                    val index = event.findPointerIndex(mScrollPointerId)
-                    if (index > 0) {
-                        val y = (event.getY(index) + 0.5f).toInt()
+                    val y = (event.y + 0.5f).toInt()
                     var dy = mLastTouchY - y
 
                     if (mScrollState != scrollStateDragging) {
@@ -154,18 +145,9 @@ class ContentTextView : AppCompatTextView {
                         mLastTouchY = y
                     }
                 }
-                }
-                MotionEvent.ACTION_POINTER_UP -> {
-                    if (event.getPointerId(actionIndex) == mScrollPointerId) {
-                        // Pick a new pointer to pick up the slack.
-                        val newIndex = if (actionIndex == 0) 1 else 0
-                        mScrollPointerId = event.getPointerId(newIndex)
-                        mLastTouchY = (event.getY(newIndex) + 0.5f).toInt()
-                    }
-                }
                 MotionEvent.ACTION_UP -> {
                     velocityTracker?.computeCurrentVelocity(1000, mMaxFlingVelocity.toFloat())
-                    val yVelocity = velocityTracker?.getYVelocity(mScrollPointerId) ?: 0f
+                    val yVelocity = velocityTracker?.yVelocity ?: 0f
                     if (abs(yVelocity) > mMinFlingVelocity) {
                         mViewFling.fling(-yVelocity.toInt())
                     } else {