From 0342a97eb7c964e5c0319c8b87a591e55f547bad Mon Sep 17 00:00:00 2001
From: Zjl <502242791@qq.com>
Date: Sun, 28 Apr 2019 17:31:01 +0800
Subject: [PATCH] =?UTF-8?q?=E5=B0=8F=E7=A8=8B=E5=BA=8Fbug=20=20e.touches[0?=
 =?UTF-8?q?]=20=E8=8E=B7=E5=8F=96=E4=B8=8D=E5=88=B0?=
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e.touches[0] 获取不到 在其他项
---
 dist/wxcharts.js | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/dist/wxcharts.js b/dist/wxcharts.js
index e2fb996..5464a4c 100644
--- a/dist/wxcharts.js
+++ b/dist/wxcharts.js
@@ -1960,7 +1960,7 @@ Charts.prototype.addEventListener = function (type, listener) {
 };
 
 Charts.prototype.getCurrentDataIndex = function (e) {
-    var touches = e.touches && e.touches.length ? e.touches : e.changedTouches;
+    var touches = e.touches && e.touches.length && e.touches[e.touches.length-1].x? e.touches : e.changedTouches;
     if (touches && touches.length) {
         var _touches$ = touches[0],
             x = _touches$.x,
@@ -2008,14 +2008,20 @@ Charts.prototype.showToolTip = function (e) {
 
 Charts.prototype.scrollStart = function (e) {
     if (e.touches[0] && this.opts.enableScroll === true) {
-        this.scrollOption.startTouchX = e.touches[0].x;
+        this.scrollOption.startTouchX = e.touches[e.touches.length - 1].x;
     }
 };
 
 Charts.prototype.scroll = function (e) {
     // TODO throtting...
     if (e.touches[0] && this.opts.enableScroll === true) {
-        var _distance = e.touches[0].x - this.scrollOption.startTouchX;
+        let nowitem = {}
+    	e.touches.forEach(el => {
+	  if (el.x) {
+	    nowitem = el
+	  }
+    	})
+    	var _distance = nowitem.x - this.scrollOption.startTouchX;
         var currentOffset = this.scrollOption.currentOffset;
 
         var validDistance = calValidDistance(currentOffset + _distance, this.chartData, this.config, this.opts);