diff --git a/config.xml b/config.xml
index 0ff1100b..7899f02a 100644
--- a/config.xml
+++ b/config.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<widget id="com.github.stellarcn.firefly" version="2.0.0" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
+<widget id="com.github.stellarcn.firefly" version="2.0.1" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
     <name>firefly</name>
     <description>
         stellar wallet
diff --git a/package.json b/package.json
index 3b156ac2..9424a518 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "firefly",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "stellar mobile wallet",
   "repository": {
     "type": "git",
diff --git a/src/components/FullK.vue b/src/components/FullK.vue
index 74574a63..7829408e 100644
--- a/src/components/FullK.vue
+++ b/src/components/FullK.vue
@@ -42,11 +42,11 @@
              
       <div class="kgraph" :id="id" v-bind:style="{height: height+'px', width: width+'px'}"></div>
       <div class="flex-row textcenter chgresolution">
-          <div :class="'flex1 ' + (resolution_key === 'week' ? 'active' : '')" @click="chgResolution('week')">{{$t('week')}}</div>
-          <div :class="'flex1 ' + (resolution_key === 'day' ? 'active' : '')" @click="chgResolution('day')">{{$t('day')}}</div>
-          <div :class="'flex1 ' + (resolution_key === 'hour' ? 'active' : '')" @click="chgResolution('hour')">{{$t('hour')}}</div>
-          <div :class="'flex1 ' + (resolution_key === '15min' ? 'active' : '')" @click="chgResolution('15min')">15{{$t('minute')}}</div>
-          <div :class="'flex1 ' + (resolution_key === '1min' ? 'active' : '')" @click="chgResolution('1min')">1{{$t('minute')}}</div>
+          <div :class="'flex1 ' + (resolution_key === 'week' ? 'active' : '')" @click="chgResolutionKey('week')">{{$t('week')}}</div>
+          <div :class="'flex1 ' + (resolution_key === 'day' ? 'active' : '')" @click="chgResolutionKey('day')">{{$t('day')}}</div>
+          <div :class="'flex1 ' + (resolution_key === 'hour' ? 'active' : '')" @click="chgResolutionKey('hour')">{{$t('hour')}}</div>
+          <div :class="'flex1 ' + (resolution_key === '15min' ? 'active' : '')" @click="chgResolutionKey('15min')">15{{$t('minute')}}</div>
+          <div :class="'flex1 ' + (resolution_key === '1min' ? 'active' : '')" @click="chgResolutionKey('1min')">1{{$t('minute')}}</div>
       </div>
   </div>
 </card>
@@ -443,6 +443,17 @@ export default {
                 ]
             }
         }, // end of koption
+        chgResolutionKey(key){
+            this.chgResolution(key)
+            this.reloadAll()
+        },
+        reloadAll(){
+            this.cleanData()
+            this.initView();
+            this.fetch();
+            this.fetchLastTradeAggregation()
+            this.fetchLastTrade()
+        }
 
     },
     components: {
diff --git a/src/components/K.vue b/src/components/K.vue
index 0ebcd448..04636ace 100644
--- a/src/components/K.vue
+++ b/src/components/K.vue
@@ -3,7 +3,7 @@
  * @Author: mazhaoyong@gmail.com 
  * @Date: 2018-01-25 11:53:34 
  * @Last Modified by: mazhaoyong@gmail.com
- * @Last Modified time: 2018-04-20 16:24:46
+ * @Last Modified time: 2018-04-28 16:50:33
  * @License: MIT 
  */
 <template>
@@ -85,6 +85,14 @@ const RESOLUTIONS = {
     "1min": RESOLUTION_1MIN
 }
 
+const RESOLUTION_HOURS = {
+    "week": 5880,
+    "day": 840,
+    "hour": 48,
+    "15min": 24,
+    "1min": 24
+}
+
 export default {
     data(){
         return {
@@ -229,6 +237,13 @@ export default {
         init() {
             this.initView()
         },
+        getStartTime(){
+            let defHour = RESOLUTION_HOURS[this.resolution_key]
+            if(!defHour){
+                defHour = 24
+            }
+            return Number(moment().subtract(defHour,"hours").format('x'))
+        },
         //请求api，获取数据
         fetch(){
           let start_time = null, end_time=null;
@@ -237,8 +252,8 @@ export default {
               end_time = new Date().getTime()
           }else{//初次请求，判断start是否存在
             if(this.start < 0){
-                //前48小时
-                start_time = Number(moment().subtract(48,"hours").format('x'))
+                
+                start_time = this.getStartTime()
             }else{
                 start_time = this.start;
             }
diff --git a/src/mixins/k-mixins.js b/src/mixins/k-mixins.js
index 5ad3ab07..28643603 100644
--- a/src/mixins/k-mixins.js
+++ b/src/mixins/k-mixins.js
@@ -29,6 +29,13 @@ export default {
             "15min": RESOLUTION_15MIN,
             "1min": RESOLUTION_1MIN
           },
+          RESOLUTION_HOURS: {
+            "week": 5880,
+            "day": 840,
+            "hour": 48,
+            "15min": 24,
+            "1min": 24
+        },
             id: null,//元素主键
             ele: null,//echarts对象
             opt: null,
@@ -128,6 +135,7 @@ export default {
             this.cleanData()
             this.fetch();
             this.fetchLastTrade()
+            
         },
         cleanData(){
             this.ele = null
@@ -138,6 +146,13 @@ export default {
             this.tinterval =  null
             this.lasttime = null
         },
+        getStartTime(){
+            let defHour = this.RESOLUTION_HOURS[this.resolution_key]
+            if(!defHour){
+                defHour = 24
+            }
+            return Number(moment().subtract(defHour,"hours").format('x'))
+        },
         //请求api，获取数据
         fetch(){
           let start_time = null, end_time=null;
@@ -145,7 +160,7 @@ export default {
               start_time = this.lasttime;
               end_time = new Date().getTime()
           }else{//初次请求，判断start是否存在
-            start_time = this.start < 0 ? Number(moment().subtract(48,"hours").format('x')) : this.start;
+            start_time = this.start < 0 ? this.getStartTime() : this.start;
             end_time = this.end < 0 ? new Date().getTime() : this.end
           }
           getTradeAggregation(getAsset(this.base), getAsset(this.counter),