diff --git a/src/core/wrapper/layout/adapt/absolute.horizontal.js b/src/core/wrapper/layout/adapt/absolute.horizontal.js
index bbae5ff4c..a8561cd0a 100644
--- a/src/core/wrapper/layout/adapt/absolute.horizontal.js
+++ b/src/core/wrapper/layout/adapt/absolute.horizontal.js
@@ -45,10 +45,6 @@ BI.AbsoluteHorizontalLayout = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this, arguments);
     }
diff --git a/src/core/wrapper/layout/adapt/absolute.leftrightvertical.js b/src/core/wrapper/layout/adapt/absolute.leftrightvertical.js
index 57ed23db9..0ff7ee466 100644
--- a/src/core/wrapper/layout/adapt/absolute.leftrightvertical.js
+++ b/src/core/wrapper/layout/adapt/absolute.leftrightvertical.js
@@ -135,10 +135,6 @@ BI.AbsoluteRightVerticalAdaptLayout = BI.inherit(BI.Layout, {
         this.layout.stroke([{}].concat(this.options.items))
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     addItem: function () {
         // do nothing
         throw new Error("不能添加子组件");
diff --git a/src/core/wrapper/layout/adapt/absolute.vertical.js b/src/core/wrapper/layout/adapt/absolute.vertical.js
index a2ea783fe..58133199b 100644
--- a/src/core/wrapper/layout/adapt/absolute.vertical.js
+++ b/src/core/wrapper/layout/adapt/absolute.vertical.js
@@ -45,10 +45,6 @@ BI.AbsoluteVerticalLayout = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this, arguments);
     }
diff --git a/src/core/wrapper/layout/adapt/adapt.center.js b/src/core/wrapper/layout/adapt/adapt.center.js
index ba8c82f10..dc15360da 100644
--- a/src/core/wrapper/layout/adapt/adapt.center.js
+++ b/src/core/wrapper/layout/adapt/adapt.center.js
@@ -46,10 +46,6 @@ BI.CenterAdaptLayout = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this, arguments);
     }
diff --git a/src/core/wrapper/layout/adapt/adapt.leftrightvertical.js b/src/core/wrapper/layout/adapt/adapt.leftrightvertical.js
index 4e0dbeb57..6eb755ece 100644
--- a/src/core/wrapper/layout/adapt/adapt.leftrightvertical.js
+++ b/src/core/wrapper/layout/adapt/adapt.leftrightvertical.js
@@ -199,10 +199,6 @@ BI.RightVerticalAdaptLayout = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     addItem: function () {
         // do nothing
         throw new Error("不能添加子组件");
diff --git a/src/core/wrapper/layout/adapt/adapt.vertical.js b/src/core/wrapper/layout/adapt/adapt.vertical.js
index 3f5f2a405..71a30d15c 100644
--- a/src/core/wrapper/layout/adapt/adapt.vertical.js
+++ b/src/core/wrapper/layout/adapt/adapt.vertical.js
@@ -46,10 +46,6 @@ BI.VerticalAdaptLayout = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this, arguments);
     }
diff --git a/src/core/wrapper/layout/adapt/inline.center.js b/src/core/wrapper/layout/adapt/inline.center.js
index d8bc184db..072d86ac3 100644
--- a/src/core/wrapper/layout/adapt/inline.center.js
+++ b/src/core/wrapper/layout/adapt/inline.center.js
@@ -48,10 +48,6 @@ BI.InlineCenterAdaptLayout = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this.layout, arguments);
     }
diff --git a/src/core/wrapper/layout/adapt/inline.horizontal.js b/src/core/wrapper/layout/adapt/inline.horizontal.js
index 734c2bd3d..242d03f96 100644
--- a/src/core/wrapper/layout/adapt/inline.horizontal.js
+++ b/src/core/wrapper/layout/adapt/inline.horizontal.js
@@ -48,10 +48,6 @@ BI.InlineHorizontalAdaptLayout = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this.layout, arguments);
     }
diff --git a/src/core/wrapper/layout/adapt/inline.vertical.js b/src/core/wrapper/layout/adapt/inline.vertical.js
index ba7bf54f5..9f888521c 100644
--- a/src/core/wrapper/layout/adapt/inline.vertical.js
+++ b/src/core/wrapper/layout/adapt/inline.vertical.js
@@ -48,10 +48,6 @@ BI.InlineVerticalAdaptLayout = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this.layout, arguments);
     }
diff --git a/src/core/wrapper/layout/flex/flex.center.js b/src/core/wrapper/layout/flex/flex.center.js
index 0bf886ca8..9ffc0337f 100644
--- a/src/core/wrapper/layout/flex/flex.center.js
+++ b/src/core/wrapper/layout/flex/flex.center.js
@@ -45,10 +45,6 @@ BI.FlexCenterLayout = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate(items);
     }
diff --git a/src/core/wrapper/layout/flex/flex.horizontal.center.js b/src/core/wrapper/layout/flex/flex.horizontal.center.js
index 8af01988c..a97188fed 100644
--- a/src/core/wrapper/layout/flex/flex.horizontal.center.js
+++ b/src/core/wrapper/layout/flex/flex.horizontal.center.js
@@ -46,10 +46,6 @@ BI.FlexHorizontalCenter = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate(items);
     }
diff --git a/src/core/wrapper/layout/flex/flex.leftrightvertical.center.js b/src/core/wrapper/layout/flex/flex.leftrightvertical.center.js
index 20e05b2ef..03915e888 100644
--- a/src/core/wrapper/layout/flex/flex.leftrightvertical.center.js
+++ b/src/core/wrapper/layout/flex/flex.leftrightvertical.center.js
@@ -25,17 +25,17 @@ BI.FlexLeftRightVerticalAdaptLayout = BI.inherit(BI.Layout, {
             ref: function (_ref) {
                 self.layout = _ref;
             },
-            items: this._formatItems(),
+            items: this._formatItems(o.items),
             scrollx: o.scrollx,
             scrolly: o.scrolly,
             scrollable: o.scrollable
         };
     },
 
-    _formatItems: function () {
+    _formatItems: function (items) {
         var o = this.options;
-        var leftItems = o.items.left || [];
-        var rightItems = o.items.right || [];
+        var leftItems = items.left || [];
+        var rightItems = items.right || [];
         leftItems = BI.map(leftItems, function (i, item) {
             var json = {
                 el: BI.stripEL(item)
@@ -72,11 +72,7 @@ BI.FlexLeftRightVerticalAdaptLayout = BI.inherit(BI.Layout, {
     },
 
     resize: function () {
-        this.layout.stroke(this._formatItems());
-    },
-
-    update: function (opt) {
-        return this.layout.update(opt);
+        this.layout.stroke(this._formatItems(this.options.items));
     },
 
     addItem: function () {
@@ -85,8 +81,7 @@ BI.FlexLeftRightVerticalAdaptLayout = BI.inherit(BI.Layout, {
     },
 
     populate: function (items) {
-        this.options.items = items;
-        this.layout.populate(this._formatItems());
+        this.layout.populate(this._formatItems(items));
     }
 });
 BI.shortcut("bi.flex_left_right_vertical_adapt", BI.FlexLeftRightVerticalAdaptLayout);
diff --git a/src/core/wrapper/layout/flex/flex.vertical.center.js b/src/core/wrapper/layout/flex/flex.vertical.center.js
index 8b27066af..11795cd15 100644
--- a/src/core/wrapper/layout/flex/flex.vertical.center.js
+++ b/src/core/wrapper/layout/flex/flex.vertical.center.js
@@ -47,10 +47,6 @@ BI.FlexVerticalCenter = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate(items);
     }
diff --git a/src/core/wrapper/layout/flex/wrapper/flex.wrapper.center.js b/src/core/wrapper/layout/flex/wrapper/flex.wrapper.center.js
index eeb66dd20..ee44e9823 100644
--- a/src/core/wrapper/layout/flex/wrapper/flex.wrapper.center.js
+++ b/src/core/wrapper/layout/flex/wrapper/flex.wrapper.center.js
@@ -48,10 +48,6 @@ BI.FlexWrapperCenterLayout = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate(items);
     }
diff --git a/src/core/wrapper/layout/flex/wrapper/flex.wrapper.horizontal.center.js b/src/core/wrapper/layout/flex/wrapper/flex.wrapper.horizontal.center.js
index e03babc6c..1735c25ff 100644
--- a/src/core/wrapper/layout/flex/wrapper/flex.wrapper.horizontal.center.js
+++ b/src/core/wrapper/layout/flex/wrapper/flex.wrapper.horizontal.center.js
@@ -48,10 +48,6 @@ BI.FlexWrapperHorizontalCenter = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate(items);
     }
diff --git a/src/core/wrapper/layout/flex/wrapper/flex.wrapper.vertical.center.js b/src/core/wrapper/layout/flex/wrapper/flex.wrapper.vertical.center.js
index d5e7096b1..5b9e7e11d 100644
--- a/src/core/wrapper/layout/flex/wrapper/flex.wrapper.vertical.center.js
+++ b/src/core/wrapper/layout/flex/wrapper/flex.wrapper.vertical.center.js
@@ -48,10 +48,6 @@ BI.FlexWrapperVerticalCenter = BI.inherit(BI.Layout, {
         this.layout.resize();
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate(items);
     }
diff --git a/src/core/wrapper/layout/float/float.absolute.horizontal.js b/src/core/wrapper/layout/float/float.absolute.horizontal.js
index d044fbe23..358535359 100644
--- a/src/core/wrapper/layout/float/float.absolute.horizontal.js
+++ b/src/core/wrapper/layout/float/float.absolute.horizontal.js
@@ -60,10 +60,6 @@ BI.FloatAbsoluteHorizontalLayout = BI.inherit(BI.Layout, {
         this.layout.stroke(this._formatItems(this.options.items));
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate(this._formatItems(items));
     }
diff --git a/src/core/wrapper/layout/float/float.absolute.leftrightvertical.js b/src/core/wrapper/layout/float/float.absolute.leftrightvertical.js
index e6efbdff4..06655b62d 100644
--- a/src/core/wrapper/layout/float/float.absolute.leftrightvertical.js
+++ b/src/core/wrapper/layout/float/float.absolute.leftrightvertical.js
@@ -27,7 +27,7 @@ BI.FloatAbsoluteLeftRightVerticalAdaptLayout = BI.inherit(BI.Layout, {
                 self.layout = _ref;
             },
             verticalAlign: o.verticalAlign,
-            items: this._formatItems(),
+            items: this._formatItems(o.items),
             vgap: "50%",
             scrollx: o.scrollx,
             scrolly: o.scrolly,
@@ -35,10 +35,10 @@ BI.FloatAbsoluteLeftRightVerticalAdaptLayout = BI.inherit(BI.Layout, {
         };
     },
 
-    _formatItems: function () {
+    _formatItems: function (items) {
         var o = this.options;
-        var leftItems = o.items.left || [];
-        var rightItems = o.items.right || [];
+        var leftItems = items.left || [];
+        var rightItems = items.right || [];
         leftItems = BI.map(leftItems, function (i, item) {
             var el = BI.stripEL(item);
             if (o.verticalAlign === BI.VerticalAlign.Middle) {
@@ -97,11 +97,7 @@ BI.FloatAbsoluteLeftRightVerticalAdaptLayout = BI.inherit(BI.Layout, {
     },
 
     resize: function () {
-        this.layout.stroke(this._formatItems());
-    },
-
-    update: function (opt) {
-        return this.layout.update(opt);
+        this.layout.stroke(this._formatItems(this.options.items));
     },
 
     addItem: function () {
@@ -110,8 +106,7 @@ BI.FloatAbsoluteLeftRightVerticalAdaptLayout = BI.inherit(BI.Layout, {
     },
 
     populate: function (items) {
-        this.options.items = items;
-        this.layout.populate(this._formatItems());
+        this.layout.populate(this._formatItems(items));
     }
 });
 BI.shortcut("bi.absolute_left_right_vertical_float", BI.FloatAbsoluteLeftRightVerticalAdaptLayout);
@@ -169,10 +164,6 @@ BI.FloatAbsoluteRightVerticalAdaptLayout = BI.inherit(BI.Layout, {
         this.layout.stroke([{}].concat(this._formatItems(this.options.items)));
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     addItem: function () {
         // do nothing
         throw new Error("不能添加子组件");
diff --git a/src/core/wrapper/layout/float/float.absolute.vertical.js b/src/core/wrapper/layout/float/float.absolute.vertical.js
index b53abb144..431fa810c 100644
--- a/src/core/wrapper/layout/float/float.absolute.vertical.js
+++ b/src/core/wrapper/layout/float/float.absolute.vertical.js
@@ -60,10 +60,6 @@ BI.FloatAbsoluteVerticalLayout = BI.inherit(BI.Layout, {
         this.layout.stroke(this._formatItems(this.options.items));
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate(this._formatItems(items));
     }
diff --git a/src/core/wrapper/layout/layout.grid.js b/src/core/wrapper/layout/layout.grid.js
index 97ad39862..dac59e74a 100644
--- a/src/core/wrapper/layout/layout.grid.js
+++ b/src/core/wrapper/layout/layout.grid.js
@@ -19,6 +19,7 @@ BI.GridLayout = BI.inherit(BI.Layout, {
     },
 
     addItem: function () {
+        // do nothing
         throw new Error("不能添加子组件");
     },
 
diff --git a/src/core/wrapper/layout/middle/middle.center.js b/src/core/wrapper/layout/middle/middle.center.js
index d445f6a6e..a21472d72 100644
--- a/src/core/wrapper/layout/middle/middle.center.js
+++ b/src/core/wrapper/layout/middle/middle.center.js
@@ -65,10 +65,6 @@ BI.CenterLayout = BI.inherit(BI.Layout, {
         throw new Error("不能添加子组件");
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this.layout, arguments);
     }
diff --git a/src/core/wrapper/layout/middle/middle.float.center.js b/src/core/wrapper/layout/middle/middle.float.center.js
index 6754528f7..b5edb61fc 100644
--- a/src/core/wrapper/layout/middle/middle.float.center.js
+++ b/src/core/wrapper/layout/middle/middle.float.center.js
@@ -64,10 +64,6 @@ BI.FloatCenterLayout = BI.inherit(BI.Layout, {
         throw new Error("不能添加子组件");
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this.layout, arguments);
     }
diff --git a/src/core/wrapper/layout/middle/middle.horizontal.js b/src/core/wrapper/layout/middle/middle.horizontal.js
index 2876d3542..f54f32996 100644
--- a/src/core/wrapper/layout/middle/middle.horizontal.js
+++ b/src/core/wrapper/layout/middle/middle.horizontal.js
@@ -63,10 +63,6 @@ BI.HorizontalCenterLayout = BI.inherit(BI.Layout, {
         throw new Error("不能添加子组件");
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this.layout, arguments);
     }
diff --git a/src/core/wrapper/layout/middle/middle.vertical.js b/src/core/wrapper/layout/middle/middle.vertical.js
index c8c6b6d36..bedb60a22 100644
--- a/src/core/wrapper/layout/middle/middle.vertical.js
+++ b/src/core/wrapper/layout/middle/middle.vertical.js
@@ -64,10 +64,6 @@ BI.VerticalCenterLayout = BI.inherit(BI.Layout, {
         throw new Error("不能添加子组件");
     },
 
-    update: function (opt) {
-        return this.layout.update(opt);
-    },
-
     populate: function (items) {
         this.layout.populate.apply(this.layout, arguments);
     }