diff --git a/build/build.js b/build/build.js
index dde324179687b70b5ccd41c871ad5a5dd0c655fd..d0a60e8417c763ff84a84f731fcf0d16474ea4ad 100644
--- a/build/build.js
+++ b/build/build.js
@@ -41,8 +41,12 @@ service.run('build', {
   entry,
   clean: !process.env.UNI_VIEW,
   mode: process.env.NODE_ENV
-}).then(function () {
-  if (process.env.UNI_UI !== 'true' && process.env.UNI_VIEW !== 'true') {
+}).then(function() {
+  if (
+    process.env.UNI_WATCH !== 'true' &&
+    process.env.UNI_UI !== 'true' &&
+    process.env.UNI_VIEW !== 'true'
+  ) {
     generateApiManifest(
       JSON.parse(JSON.stringify(process.UNI_SERVICE_API_MANIFEST)),
       JSON.parse(JSON.stringify(process.UNI_SERVICE_API_PROTOCOL))
@@ -58,7 +62,7 @@ if (process.env.UNI_PLATFORM === 'h5' && process.env.UNI_WATCH === 'false') {
   const packageJsonPath = path.join(packagePath, 'package.json')
   del(path.join(packagePath, '{lib,src}'))
     .then(() => {
-      copy([path.join(__dirname, '../{lib,src}/**/*')], packagePath, function (err, file) {
+      copy([path.join(__dirname, '../{lib,src}/**/*')], packagePath, function(err, file) {
         if (err) {
           throw err
         }
diff --git a/package.json b/package.json
index 8e89db02c9816721d65aad29c76cf96100b29ae8..37e338ce30bd5b70f39717f5f47921f40d7bb698 100644
--- a/package.json
+++ b/package.json
@@ -98,6 +98,7 @@
       "wx": true,
       "my": true,
       "swan": true,
+      "tt": true,
       "weex": true,
       "__id__": true,
       "__uniConfig": true,
diff --git a/packages/uni-app-plus/dist/index.js b/packages/uni-app-plus/dist/index.js
index 231429991b28940b938c4ec79673aea2a2bd73f4..6e33c0b1360867c04b9bf7a3d8567e4d891b3d98 100644
--- a/packages/uni-app-plus/dist/index.js
+++ b/packages/uni-app-plus/dist/index.js
@@ -436,6 +436,7 @@ function wrapper (methodName, method) {
 const todoApis = Object.create(null);
 
 const TODOS = [
+  'onTabBarMidButtonTap',
   'subscribePush',
   'unsubscribePush',
   'onPush',
@@ -519,8 +520,13 @@ function wrapper$1 (webview) {
     return
   }
   const maskColor = webview.__uniapp_mask;
-  let maskWebview = plus.webview.getWebviewById(webview.__uniapp_mask_id);
-  maskWebview = maskWebview.parent() || maskWebview;// 再次检测父
+  let maskWebview = webview.__uniapp_mask_id === '0' ? {
+    setStyle ({ mask }) {
+      requireNativePlugin('uni-tabview').setMask({
+        color: mask
+      });
+    }
+  } : plus.webview.getWebviewById(webview.__uniapp_mask_id);
   const oldShow = webview.show;
   const oldHide = webview.hide;
   const oldClose = webview.close;
diff --git a/packages/uni-app-plus/dist/view.umd.js b/packages/uni-app-plus/dist/view.umd.js
index 512910edbd34f8f86553f7c864fb6bf15fccce01..5f2c0264aab4f5668e6e1e0c6704866a2a167c50 100644
--- a/packages/uni-app-plus/dist/view.umd.js
+++ b/packages/uni-app-plus/dist/view.umd.js
@@ -11478,6 +11478,8 @@ Scroller.prototype.isScrolling = function () {
         if (n.onTouchStart) {
           n.onTouchStart();
         }
+
+        event.preventDefault();
       }
     },
     _handleTouchMove: function _handleTouchMove(event) {
@@ -21370,6 +21372,26 @@ var Spring = __webpack_require__(42);
 
 
 
+
+function onClick(dom, callback) {
+  var MAX_MOVE = 20;
+  var hasTouchSupport = navigator.maxTouchPoints;
+  var x = 0;
+  var y = 0;
+  dom.addEventListener(hasTouchSupport ? 'touchstart' : 'mousedown', function (event) {
+    var info = hasTouchSupport ? event.changedTouches[0] : event;
+    x = info.clientX;
+    y = info.clientY;
+  });
+  dom.addEventListener(hasTouchSupport ? 'touchend' : 'mouseup', function (event) {
+    var info = hasTouchSupport ? event.changedTouches[0] : event;
+
+    if (Math.abs(info.clientX - x) < MAX_MOVE && Math.abs(info.clientY - y) < MAX_MOVE) {
+      callback(info);
+    }
+  });
+}
+
 /* harmony default export */ var picker_view_columnvue_type_script_lang_js_ = ({
   name: 'PickerViewColumn',
   mixins: [touchtrack["a" /* default */], scroller["a" /* default */]],
@@ -21416,7 +21438,8 @@ var Spring = __webpack_require__(42);
     this.indicatorStyle = $parent.indicatorStyle;
     this.indicatorClass = $parent.indicatorClass;
     this.maskStyle = $parent.maskStyle;
-    this.maskClass = $parent.maskClass; // this.__pageRerender = this._pageRerender.bind(this)
+    this.maskClass = $parent.maskClass;
+    this.deltaY = 0;
   },
   mounted: function mounted() {
     var _this = this;
@@ -21428,6 +21451,7 @@ var Spring = __webpack_require__(42);
 
       _this.update();
     });
+    onClick(this.$el, this._handleTap.bind(this));
   },
   methods: {
     _setItemHeight: function _setItemHeight(height) {
@@ -21455,23 +21479,39 @@ var Spring = __webpack_require__(42);
         }
       }
     },
-    _handleTap: function _handleTap(e) {
-      if (e.target !== e.currentTarget && !this._scroller.isScrolling()) {
-        var t = e.touches && e.touches[0] && e.touches[0].clientY;
-        var n = typeof t === 'number' ? t : e.detail.y - document.body.scrollTop;
-        var i = this.$el.getBoundingClientRect();
-        var r = n - i.top - this._height / 2;
+    _handleTap: function _handleTap(_ref) {
+      var clientY = _ref.clientY;
+
+      if (!this._scroller.isScrolling()) {
+        var rect = this.$el.getBoundingClientRect();
+        var r = clientY - rect.top - this.height / 2;
         var o = this.indicatorHeight / 2;
 
         if (!(Math.abs(r) <= o)) {
           var a = Math.ceil((Math.abs(r) - o) / this.indicatorHeight);
           var s = r < 0 ? -a : a;
-          this.current += s;
+          var current = Math.min(this.current + s, this.length - 1);
+          this.current = current = Math.max(current, 0);
 
-          this._scroller.scrollTo(this.current * this.indicatorHeight);
+          this._scroller.scrollTo(current * this.indicatorHeight);
         }
       }
     },
+    _handleWheel: function _handleWheel($event) {
+      var deltaY = this.deltaY + $event.deltaY;
+
+      if (Math.abs(deltaY) > 10) {
+        this.deltaY = 0;
+        var current = Math.min(this.current + (deltaY < 0 ? -1 : 1), this.length - 1);
+        this.current = current = Math.max(current, 0);
+
+        this._scroller.scrollTo(current * this.indicatorHeight);
+      } else {
+        this.deltaY = deltaY;
+      }
+
+      $event.preventDefault();
+    },
     setCurrent: function setCurrent(current) {
       if (current !== this.current) {
         this.current = current;
@@ -21503,14 +21543,14 @@ var Spring = __webpack_require__(42);
       var _this3 = this;
 
       this.$nextTick(function () {
-        var index = Math.max(_this3.length - 1, 0);
-        var current = Math.min(_this3.current, index);
+        var current = Math.min(_this3.current, _this3.length - 1);
+        current = Math.max(current, 0);
 
         _this3._scroller.update(current * _this3.indicatorHeight, undefined, _this3.indicatorHeight);
       });
     },
-    _resize: function _resize(_ref) {
-      var height = _ref.height;
+    _resize: function _resize(_ref2) {
+      var height = _ref2.height;
       this.indicatorHeight = height;
     }
   },
@@ -21518,7 +21558,7 @@ var Spring = __webpack_require__(42);
     this.length = this.$slots.default && this.$slots.default.length || 0;
     return createElement('uni-picker-view-column', {
       on: {
-        tap: this._handleTap
+        wheel: this._handleWheel
       }
     }, [createElement('div', {
       ref: 'main',
diff --git a/packages/uni-cli-shared/lib/cache.js b/packages/uni-cli-shared/lib/cache.js
index 69e10165026e3d5b0a7704191c4b4dda297f0131..7b526016b476ef9dcafd05bea6e930996432ed72 100644
--- a/packages/uni-cli-shared/lib/cache.js
+++ b/packages/uni-cli-shared/lib/cache.js
@@ -53,21 +53,30 @@ function getChangedJsonFileMap (clear = true) {
 }
 
 function updateAppJson (name, jsonObj) {
-  updateComponentJson(name, jsonObj)
+  updateComponentJson(name, jsonObj, true, 'App')
 }
 
 function updatePageJson (name, jsonObj) {
   pageSet.add(name)
-  updateComponentJson(name, jsonObj)
+  updateComponentJson(name, jsonObj, true, 'Page')
 }
 
 function updateProjectJson (name, jsonObj) {
-  updateComponentJson(name, jsonObj, false)
+  updateComponentJson(name, jsonObj, false, 'Project')
 }
 
 const supportGlobalUsingComponents = process.env.UNI_PLATFORM === 'mp-weixin' || process.env.UNI_PLATFORM === 'mp-qq'
 
-function updateComponentJson (name, jsonObj, usingComponents = true) {
+function updateComponentJson (name, jsonObj, usingComponents = true, type = 'Component') {
+  if (type === 'Component') {
+    jsonObj.component = true
+  }
+  if (type === 'Page') {
+    if (process.env.UNI_PLATFORM === 'mp-baidu') {
+      jsonObj.component = true
+    }
+  }
+
   const oldJsonStr = getJsonFile(name)
   if (oldJsonStr) { // update
     if (usingComponents) { // merge usingComponents
diff --git a/packages/uni-mp-alipay/dist/index.js b/packages/uni-mp-alipay/dist/index.js
index b9671ba6b936fc01a522d9badecb9ab918955a64..8bc5201e5efeb872efcb1ec9b127d17f075fbfd3 100644
--- a/packages/uni-mp-alipay/dist/index.js
+++ b/packages/uni-mp-alipay/dist/index.js
@@ -836,6 +836,7 @@ function wrapper (methodName, method) {
 const todoApis = Object.create(null);
 
 const TODOS = [
+  'onTabBarMidButtonTap',
   'subscribePush',
   'unsubscribePush',
   'onPush',
diff --git a/packages/uni-mp-baidu/dist/index.js b/packages/uni-mp-baidu/dist/index.js
index c62d5d875103744b33644cf2d2c1b0cab1c61438..71b6d665634c6eda4194012ff4ec5633c1283fa7 100644
--- a/packages/uni-mp-baidu/dist/index.js
+++ b/packages/uni-mp-baidu/dist/index.js
@@ -579,6 +579,7 @@ function wrapper (methodName, method) {
 const todoApis = Object.create(null);
 
 const TODOS = [
+  'onTabBarMidButtonTap',
   'subscribePush',
   'unsubscribePush',
   'onPush',
diff --git a/packages/uni-mp-qq/dist/index.js b/packages/uni-mp-qq/dist/index.js
index 1e4bc0ec2a32c62230a71abbeab2a99a9e909916..dc737347bdf738cf9062803a7808a2b60e462bae 100644
--- a/packages/uni-mp-qq/dist/index.js
+++ b/packages/uni-mp-qq/dist/index.js
@@ -539,6 +539,7 @@ function wrapper (methodName, method) {
 const todoApis = Object.create(null);
 
 const TODOS = [
+  'onTabBarMidButtonTap',
   'subscribePush',
   'unsubscribePush',
   'onPush',
diff --git a/packages/uni-mp-toutiao/dist/index.js b/packages/uni-mp-toutiao/dist/index.js
index 22e409e02f9de00a38f3aeae935ae2942d2da092..c1464b00a2a9cc20743469608b284d311b8fecdf 100644
--- a/packages/uni-mp-toutiao/dist/index.js
+++ b/packages/uni-mp-toutiao/dist/index.js
@@ -536,9 +536,10 @@ const protocols = {
       timeout: false
     }
   },
-  requestPayment: {
+  requestPayment: {
+    name: tt.canIUse && tt.canIUse('pay') ? 'pay' : 'requestPayment',
     args: {
-      orderInfo: 'data'
+      orderInfo: tt.canIUse && tt.canIUse('pay') ? 'orderInfo' : 'data'
     }
   },
   getFileInfo: {
@@ -630,6 +631,7 @@ function wrapper (methodName, method) {
 const todoApis = Object.create(null);
 
 const TODOS = [
+  'onTabBarMidButtonTap',
   'subscribePush',
   'unsubscribePush',
   'onPush',
diff --git a/packages/uni-mp-weixin/dist/index.js b/packages/uni-mp-weixin/dist/index.js
index de5a7f5e39292011201ce491bb00c23caebda0e4..5770debb66b5cc37697124613a57352477cc6e38 100644
--- a/packages/uni-mp-weixin/dist/index.js
+++ b/packages/uni-mp-weixin/dist/index.js
@@ -474,6 +474,7 @@ function wrapper (methodName, method) {
 const todoApis = Object.create(null);
 
 const TODOS = [
+  'onTabBarMidButtonTap',
   'subscribePush',
   'unsubscribePush',
   'onPush',
diff --git a/src/core/view/components/picker-view-column/index.vue b/src/core/view/components/picker-view-column/index.vue
index f6791bbb0df61d47f8a505c0659fa01b88fe3e37..02d4c34a00bf37d09fe1cebe3c0c4a749d2bf3fc 100644
--- a/src/core/view/components/picker-view-column/index.vue
+++ b/src/core/view/components/picker-view-column/index.vue
@@ -4,6 +4,24 @@ import scroller from 'uni-mixins/scroller/index'
 import { Friction } from 'uni-mixins/scroller/Friction'
 import { Spring } from 'uni-mixins/scroller/Spring'
 
+function onClick (dom, callback) {
+  const MAX_MOVE = 20
+  const hasTouchSupport = navigator.maxTouchPoints
+  let x = 0
+  let y = 0
+  dom.addEventListener(hasTouchSupport ? 'touchstart' : 'mousedown', (event) => {
+    const info = hasTouchSupport ? event.changedTouches[0] : event
+    x = info.clientX
+    y = info.clientY
+  })
+  dom.addEventListener(hasTouchSupport ? 'touchend' : 'mouseup', (event) => {
+    const info = hasTouchSupport ? event.changedTouches[0] : event
+    if (Math.abs(info.clientX - x) < MAX_MOVE && Math.abs(info.clientY - y) < MAX_MOVE) {
+      callback(info)
+    }
+  })
+}
+
 export default {
   name: 'PickerViewColumn',
   mixins: [touchtrack, scroller],
@@ -50,7 +68,7 @@ export default {
     this.indicatorClass = $parent.indicatorClass
     this.maskStyle = $parent.maskStyle
     this.maskClass = $parent.maskClass
-    // this.__pageRerender = this._pageRerender.bind(this)
+    this.deltaY = 0
   },
   mounted: function () {
     this.touchtrack(this.$refs.main, '_handleTrack', true)
@@ -59,6 +77,7 @@ export default {
       this.init()
       this.update()
     })
+    onClick(this.$el, this._handleTap.bind(this))
   },
   methods: {
     _setItemHeight (height) {
@@ -81,21 +100,32 @@ export default {
         }
       }
     },
-    _handleTap: function (e) {
-      if (e.target !== e.currentTarget && !this._scroller.isScrolling()) {
-        var t = e.touches && e.touches[0] && e.touches[0].clientY
-        var n = typeof t === 'number' ? t : e.detail.y - document.body.scrollTop
-        var i = this.$el.getBoundingClientRect()
-        var r = n - i.top - this._height / 2
+    _handleTap: function ({ clientY }) {
+      if (!this._scroller.isScrolling()) {
+        var rect = this.$el.getBoundingClientRect()
+        var r = clientY - rect.top - this.height / 2
         var o = this.indicatorHeight / 2
         if (!(Math.abs(r) <= o)) {
           var a = Math.ceil((Math.abs(r) - o) / this.indicatorHeight)
           var s = r < 0 ? -a : a
-          this.current += s
-          this._scroller.scrollTo(this.current * this.indicatorHeight)
+          var current = Math.min(this.current + s, this.length - 1)
+          this.current = current = Math.max(current, 0)
+          this._scroller.scrollTo(current * this.indicatorHeight)
         }
       }
     },
+    _handleWheel ($event) {
+      const deltaY = this.deltaY + $event.deltaY
+      if (Math.abs(deltaY) > 10) {
+        this.deltaY = 0
+        var current = Math.min(this.current + (deltaY < 0 ? -1 : 1), this.length - 1)
+        this.current = current = Math.max(current, 0)
+        this._scroller.scrollTo(current * this.indicatorHeight)
+      } else {
+        this.deltaY = deltaY
+      }
+      $event.preventDefault()
+    },
     setCurrent: function (current) {
       if (current !== this.current) {
         this.current = current
@@ -122,8 +152,8 @@ export default {
     },
     update: function () {
       this.$nextTick(() => {
-        var index = Math.max(this.length - 1, 0)
-        var current = Math.min(this.current, index)
+        var current = Math.min(this.current, this.length - 1)
+        current = Math.max(current, 0)
         this._scroller.update(current * this.indicatorHeight, undefined, this.indicatorHeight)
       })
     },
@@ -137,10 +167,9 @@ export default {
     this.length = (this.$slots.default && this.$slots.default.length) || 0
     return createElement('uni-picker-view-column', {
       on: {
-        tap: this._handleTap
+        wheel: this._handleWheel
       }
-    },
-    [
+    }, [
       createElement('div', {
         ref: 'main',
         staticClass: 'uni-picker-view-group'
diff --git a/src/core/view/mixins/scroller/index.js b/src/core/view/mixins/scroller/index.js
index 780b7469d2d7c73f04eb1ed088533514b303fc24..41862dea6f2901daf66ab8678149fe0024aa79cd 100644
--- a/src/core/view/mixins/scroller/index.js
+++ b/src/core/view/mixins/scroller/index.js
@@ -46,6 +46,7 @@ export default {
         if (n.onTouchStart) {
           n.onTouchStart()
         }
+        event.preventDefault()
       }
     },
     _handleTouchMove: function (event) {
diff --git a/src/platforms/h5/view/components/picker/index.vue b/src/platforms/h5/view/components/picker/index.vue
index f1c8f09de51e647cdbcde8b65ef77cab650147e2..c1c5ae97d5e3a4ea27b21cbc1a63a3a66dd0fa27 100644
--- a/src/platforms/h5/view/components/picker/index.vue
+++ b/src/platforms/h5/view/components/picker/index.vue
@@ -319,7 +319,7 @@ export default {
       }
     },
     _resetFormData () {
-      this.valueSync = ''
+      this.valueSync = 0
     },
     _createTime () {
       var hours = []
diff --git a/src/platforms/mp-toutiao/runtime/api/protocols.js b/src/platforms/mp-toutiao/runtime/api/protocols.js
index 745bad5d8974d7dc3246a16e18ef19f4e3e05ebe..de292cb54589458c34dd04797d80c0e70bab2545 100644
--- a/src/platforms/mp-toutiao/runtime/api/protocols.js
+++ b/src/platforms/mp-toutiao/runtime/api/protocols.js
@@ -152,9 +152,10 @@ const protocols = {
       timeout: false
     }
   },
-  requestPayment: {
+  requestPayment: {
+    name: tt.canIUse && tt.canIUse('pay') ? 'pay' : 'requestPayment',
     args: {
-      orderInfo: 'data'
+      orderInfo: tt.canIUse && tt.canIUse('pay') ? 'orderInfo' : 'data'
     }
   },
   getFileInfo: {