diff --git a/iOS/Pod/Classes/Shader/DoricGroupNode.h b/iOS/Pod/Classes/Shader/DoricGroupNode.h
index 99e13dd0..89e8231a 100644
--- a/iOS/Pod/Classes/Shader/DoricGroupNode.h
+++ b/iOS/Pod/Classes/Shader/DoricGroupNode.h
@@ -9,7 +9,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-@interface DoricGroupNode : DoricViewNode<UIView *>
+@interface DoricGroupNode <V:UIView *,P:LayoutParams *>: DoricViewNode<V>
 
 @property (nonatomic,strong) NSMutableDictionary *children;
 @property (nonatomic,strong) NSMutableArray *indexedChildren;
@@ -19,7 +19,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (void)blendChild:(DoricViewNode *)child layoutConfig:(NSDictionary *)layoutconfig;
 
-- (LayoutParams *)generateDefaultLayoutParams;
+- (P)generateDefaultLayoutParams;
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/iOS/Pod/Classes/Shader/DoricGroupNode.m b/iOS/Pod/Classes/Shader/DoricGroupNode.m
index c3fc295f..763e16c4 100644
--- a/iOS/Pod/Classes/Shader/DoricGroupNode.m
+++ b/iOS/Pod/Classes/Shader/DoricGroupNode.m
@@ -9,14 +9,13 @@
 
 @implementation DoricGroupNode
 
-- (instancetype)init {
-    if(self = [super init]) {
+- (instancetype)initWithContext:(DoricContext *)doricContext {
+    if(self = [super initWithContext:doricContext]) {
         _children = [[NSMutableDictionary alloc] init];
         _indexedChildren = [[NSMutableArray alloc] init];
     }
     return self;
 }
-
 - (UIView *)build:(NSDictionary *)props {
     return [[UIView alloc] init];
 }
@@ -40,26 +39,34 @@ - (void)blendView:(UIView *)view forPropName:(NSString *)name propValue:(id)prop
                 node.viewId = viewId;
                 [self.children setObject:node forKey:viewId];
             } else if (i != node.index){
+                [self.indexedChildren removeObjectAtIndex:i];
                 node.index = i;
                 [node.view removeFromSuperview];
             }
             LayoutParams *params = node.layoutParams;
             if (params == nil) {
                 params = [self generateDefaultLayoutParams];
+                node.layoutParams = params;
             }
             [node blend:[val objectForKey:@"props"]];
-            if ([self.indexedChildren objectAtIndex:i] == nil) {
+            if (self.indexedChildren.count <= i) {
+                [self.view addSubview:node.view];
+                [self.indexedChildren addObject:node];
+            }else if ([self.indexedChildren objectAtIndex:i] == nil) {
+                self.indexedChildren[i] = node;
                 [self.view insertSubview:node.view atIndex:i];
-                [self.indexedChildren setObject:node atIndexedSubscript:i];
             }
         }
         
         while (i < self.view.subviews.count) {
-            [self.view.subviews[i] removeFromSuperview];
-            DoricViewNode *node = [self.indexedChildren objectAtIndex:i];
-            if (node != nil) {
-                [self.children removeObjectForKey: node.viewId];
-                [self.indexedChildren removeObjectAtIndex:i];
+            UIView *view = self.view.subviews[i];
+            if (i < self.indexedChildren.count) {
+                DoricViewNode *node = [self.indexedChildren objectAtIndex:i];
+                if (node && node.view == view) {
+                    [self.children removeObjectForKey: node.viewId];
+                    [self.indexedChildren removeObjectAtIndex:i];
+                    [view removeFromSuperview];
+                }
             }
             i++;
         }
@@ -75,13 +82,17 @@ - (LayoutParams *)generateDefaultLayoutParams {
 
 - (void)blendChild:(DoricViewNode *)child layoutConfig:(NSDictionary *)layoutconfig {
     LayoutParams *params = child.layoutParams;
-    NSDictionary *margin = [layoutconfig objectForKey:@"margin"];
-    if (margin) {
-        params.margin.top = [(NSNumber *)[margin objectForKey:@"top"] floatValue];
-        params.margin.left = [(NSNumber *)[margin objectForKey:@"left"] floatValue];
-        params.margin.right = [(NSNumber *)[margin objectForKey:@"right"] floatValue];
-        params.margin.bottom = [(NSNumber *)[margin objectForKey:@"bottom"] floatValue];
+    if ([params isKindOfClass:MarginLayoutParams.class]) {
+        MarginLayoutParams *marginParams = (MarginLayoutParams *)params;
+        NSDictionary *margin = [layoutconfig objectForKey:@"margin"];
+        if (margin) {
+            marginParams.margin.top = [(NSNumber *)[margin objectForKey:@"top"] floatValue];
+            marginParams.margin.left = [(NSNumber *)[margin objectForKey:@"left"] floatValue];
+            marginParams.margin.right = [(NSNumber *)[margin objectForKey:@"right"] floatValue];
+            marginParams.margin.bottom = [(NSNumber *)[margin objectForKey:@"bottom"] floatValue];
+        }
     }
+    
 }
 
 @end
diff --git a/iOS/Pod/Classes/Shader/DoricHLayoutNode.h b/iOS/Pod/Classes/Shader/DoricHLayoutNode.h
index 569dec08..d8cde6d0 100644
--- a/iOS/Pod/Classes/Shader/DoricHLayoutNode.h
+++ b/iOS/Pod/Classes/Shader/DoricHLayoutNode.h
@@ -9,7 +9,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-@interface DoricHLayoutNode : DoricGroupNode
+@interface DoricHLayoutNode : DoricGroupNode<UIView *,VHLayoutParams *>
 @property (nonatomic) CGFloat space;
 @property (nonatomic) DoricGravity gravity;
 @end
diff --git a/iOS/Pod/Classes/Shader/DoricHLayoutNode.m b/iOS/Pod/Classes/Shader/DoricHLayoutNode.m
index 62befefd..389b9b80 100644
--- a/iOS/Pod/Classes/Shader/DoricHLayoutNode.m
+++ b/iOS/Pod/Classes/Shader/DoricHLayoutNode.m
@@ -6,6 +6,7 @@
 //
 
 #import "DoricHLayoutNode.h"
+#import "DoricUtil.h"
 
 @implementation DoricHLayoutNode
 - (instancetype)init {
@@ -16,15 +17,48 @@ - (instancetype)init {
     return self;
 }
 
+- (void)blendView:(id)view forPropName:(NSString *)name propValue:(id)prop {
+    if ([name isEqualToString:@"gravity"]) {
+        self.gravity = [(NSNumber *)prop integerValue];
+    } else if ([name isEqualToString:@"space"]) {
+        self.space = [(NSNumber *)prop floatValue];
+    } else {
+        [super blendView:view forPropName:name propValue:prop];
+    }
+}
+
+- (void)blendChild:(DoricViewNode *)child layoutConfig:(NSDictionary *)layoutconfig {
+    [super blendChild:child layoutConfig:layoutconfig];
+    if (![child.layoutParams isKindOfClass:VHLayoutParams.class]) {
+        DoricLog(@"blend VLayout child error,layout params not match");
+        return;
+    }
+    VHLayoutParams *params = (VHLayoutParams *)child.layoutParams;
+    NSDictionary *margin = [layoutconfig objectForKey:@"margin"];
+    if (margin) {
+        params.margin.top = [(NSNumber *)[margin objectForKey:@"top"] floatValue];
+        params.margin.left = [(NSNumber *)[margin objectForKey:@"left"] floatValue];
+        params.margin.right = [(NSNumber *)[margin objectForKey:@"right"] floatValue];
+        params.margin.bottom = [(NSNumber *)[margin objectForKey:@"bottom"] floatValue];
+    }
+    NSNumber *alignment = [layoutconfig objectForKey:@"alignment"];
+    if (alignment) {
+        params.alignment = [alignment integerValue];
+    }
+}
+
+- (VHLayoutParams *)generateDefaultLayoutParams {
+    return [[VHLayoutParams alloc] init];
+}
+
 - (void)measureByParent:(DoricGroupNode *)parent {
     DoricLayoutDesc widthSpec = self.layoutParams.width;
     DoricLayoutDesc heightSpec = self.layoutParams.height;
     CGFloat maxWidth = 0,maxHeight = 0;
     for (DoricViewNode *child in self.indexedChildren) {
         [child measureByParent:self];
-        UIView *childView = child.view;
-        CGFloat placeWidth = childView.width + child.layoutParams.margin.left + child.layoutParams.margin.right;
-        CGFloat placeHeight = childView.height + child.layoutParams.margin.top + child.layoutParams.margin.bottom;
+        CGFloat placeWidth = child.measuredWidth;
+        CGFloat placeHeight = child.measuredHeight;
         maxWidth += placeWidth + self.space;
         maxHeight = MAX(maxHeight, placeHeight);
     }
@@ -35,11 +69,61 @@ - (void)measureByParent:(DoricGroupNode *)parent {
     self.desiredHeight = maxHeight;
     
     if (widthSpec == LAYOUT_WRAP_CONTENT) {
-        self.view.width = maxWidth;
+        self.width = maxWidth;
     }
     
     if (heightSpec == LAYOUT_WRAP_CONTENT) {
-        self.view.height = maxHeight;
+        self.height = maxHeight;
+    }
+}
+
+- (void)layoutByParent:(DoricGroupNode *)parent {
+    if (self.layoutParams.width == LAYOUT_MATCH_PARENT) {
+        self.width = parent.width;
+    }
+    if (self.layoutParams.height == LAYOUT_MATCH_PARENT) {
+        self.height = parent.height;
+    }
+    // layotu child
+    CGFloat xStart = 0, yStart = 0;
+    if ((self.gravity & LEFT) == LEFT) {
+        xStart = 0;
+    } else if ((self.gravity & RIGHT) == RIGHT) {
+        xStart = self.width - self.desiredWidth;
+    } else if ((self.gravity & CENTER_X) == CENTER_X) {
+        xStart = (self.width -self.desiredWidth)/2;
+    }
+    
+    if ((self.gravity & TOP) == TOP) {
+        yStart = 0;
+    } else if ((self.gravity & BOTTOM) == BOTTOM) {
+        yStart = self.height - self.desiredHeight;
+    } else if ((self.gravity & CENTER_Y) == CENTER_Y) {
+        yStart = (self.height -self.desiredHeight)/2;
+    }
+    
+    for (DoricViewNode *child in self.indexedChildren) {
+        if (child.layoutParams.width == LAYOUT_MATCH_PARENT) {
+            child.width = self.width;
+        }
+        if (child.layoutParams.height == LAYOUT_MATCH_PARENT) {
+            child.height = self.height;
+        }
+        
+        if ([child.layoutParams isKindOfClass:VHLayoutParams.class]) {
+            VHLayoutParams *layoutParams = (VHLayoutParams *)child.layoutParams;
+            DoricGravity gravity = layoutParams.alignment;
+            if ((gravity & TOP) == TOP) {
+                child.top = yStart;
+            } else if ((gravity & BOTTOM) == BOTTOM) {
+                child.bottom = yStart + self.desiredHeight;
+            } else if ((gravity & CENTER_Y) == CENTER_Y) {
+                child.centerY = yStart + self.desiredHeight/2;
+            }
+        }
+        child.left = xStart;
+        xStart = child.right + self.space;
+        [child layoutByParent:self];
     }
 }
 
diff --git a/iOS/Pod/Classes/Shader/DoricRootNode.m b/iOS/Pod/Classes/Shader/DoricRootNode.m
index fe9cb055..430bb6a5 100644
--- a/iOS/Pod/Classes/Shader/DoricRootNode.m
+++ b/iOS/Pod/Classes/Shader/DoricRootNode.m
@@ -14,12 +14,14 @@ - (void)setupRootView:(UIView *)view {
 
 - (void)measureByParent:(DoricGroupNode *)parent {
     // Do noting for root
+    [super measureByParent:self];
 }
 
 
 - (void)render:(NSDictionary *)props {
     [self blend:props];
     [self measureByParent:self];
+    [self layoutByParent:self];
 }
 
 @end
diff --git a/iOS/Pod/Classes/Shader/DoricStackNode.h b/iOS/Pod/Classes/Shader/DoricStackNode.h
index 098a94d0..2b09c226 100644
--- a/iOS/Pod/Classes/Shader/DoricStackNode.h
+++ b/iOS/Pod/Classes/Shader/DoricStackNode.h
@@ -9,7 +9,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-@interface DoricStackNode : DoricGroupNode
+@interface DoricStackNode : DoricGroupNode<UIView *,StackLayoutParams *>
 @property (nonatomic) DoricGravity gravity;
 @end
 
diff --git a/iOS/Pod/Classes/Shader/DoricStackNode.m b/iOS/Pod/Classes/Shader/DoricStackNode.m
index 6ab37bfa..f9bccd17 100644
--- a/iOS/Pod/Classes/Shader/DoricStackNode.m
+++ b/iOS/Pod/Classes/Shader/DoricStackNode.m
@@ -22,9 +22,8 @@ - (void)measureByParent:(DoricGroupNode *)parent {
     CGFloat maxWidth = 0,maxHeight = 0;
     for (DoricViewNode *child in self.indexedChildren) {
         [child measureByParent:self];
-        UIView *childView = child.view;
-        CGFloat placeWidth = childView.width + child.layoutParams.margin.left + child.layoutParams.margin.right;
-        CGFloat placeHeight = childView.height + child.layoutParams.margin.top + child.layoutParams.margin.bottom;
+        CGFloat placeWidth = child.measuredWidth;
+        CGFloat placeHeight = child.measuredHeight;
         maxWidth = MAX(maxWidth, placeWidth);
         maxHeight = MAX(maxHeight, placeHeight);
     }
@@ -32,43 +31,49 @@ - (void)measureByParent:(DoricGroupNode *)parent {
     self.desiredHeight = maxHeight;
     
     if (widthSpec == LAYOUT_WRAP_CONTENT) {
-        self.view.width = maxWidth;
+        self.width = maxWidth;
     }
     
     if (heightSpec == LAYOUT_WRAP_CONTENT) {
-        self.view.height = maxHeight;
+        self.height = maxHeight;
     }
-    
+}
+- (LayoutParams *)generateDefaultLayoutParams {
+    return [[StackLayoutParams alloc] init];
 }
 
 - (void)layoutByParent:(DoricGroupNode *)parent {
     for (DoricViewNode *child in self.indexedChildren) {
         [child measureByParent:self];
-        UIView *childView = child.view;
         if (child.layoutParams.width == LAYOUT_MATCH_PARENT) {
-            childView.width = self.view.width;
+            child.width = self.width;
         }
         if (child.layoutParams.height == LAYOUT_MATCH_PARENT) {
-            childView.height = self.view.height;
+            child.height = self.height;
         }
-        DoricGravity gravity = self.layoutParams.alignment;
+        DoricGravity gravity = self.gravity;
+        if ([child.layoutParams isKindOfClass:StackLayoutParams.class]) {
+            StackLayoutParams *layoutParams = (StackLayoutParams *)self.layoutParams;
+            gravity |= layoutParams.alignment;
+        }
+        
         if ((gravity & LEFT) == LEFT) {
-            childView.left = self.view.left;
+            child.left = self.left;
         }
         if ((gravity & RIGHT) == RIGHT) {
-            childView.right = self.view.right;
+            child.right = self.right;
         }
         if ((gravity & TOP) == TOP) {
-            childView.top = self.view.top;
+            child.top = self.top;
         }
         if ((gravity & BOTTOM) == BOTTOM) {
-            childView.bottom = self.view.bottom;
+            child.bottom = self.bottom;
         }
         if ((gravity & CENTER_X) == CENTER_X) {
-            childView.centerX = self.view.centerX;
+            child.centerX = self.centerX;
         }
         if ((gravity & CENTER_Y) == CENTER_Y) {
-            childView.centerY = self.view.centerY;
+            child.centerY = self.centerY;
         }
     }
 }
diff --git a/iOS/Pod/Classes/Shader/DoricVLayoutNode.h b/iOS/Pod/Classes/Shader/DoricVLayoutNode.h
index c77e1eaa..b4f15db5 100644
--- a/iOS/Pod/Classes/Shader/DoricVLayoutNode.h
+++ b/iOS/Pod/Classes/Shader/DoricVLayoutNode.h
@@ -9,7 +9,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-@interface DoricVLayoutNode : DoricGroupNode
+@interface DoricVLayoutNode : DoricGroupNode<UIView *,VHLayoutParams *>
 @property (nonatomic) CGFloat space;
 @property (nonatomic) DoricGravity gravity;
 @end
diff --git a/iOS/Pod/Classes/Shader/DoricVLayoutNode.m b/iOS/Pod/Classes/Shader/DoricVLayoutNode.m
index 22ec2c93..2fe14284 100644
--- a/iOS/Pod/Classes/Shader/DoricVLayoutNode.m
+++ b/iOS/Pod/Classes/Shader/DoricVLayoutNode.m
@@ -6,6 +6,7 @@
 //
 
 #import "DoricVLayoutNode.h"
+#import "DoricUtil.h"
 
 @implementation DoricVLayoutNode
 - (instancetype)init {
@@ -16,15 +17,48 @@ - (instancetype)init {
     return self;
 }
 
+- (void)blendView:(id)view forPropName:(NSString *)name propValue:(id)prop {
+    if ([name isEqualToString:@"gravity"]) {
+        self.gravity = [(NSNumber *)prop integerValue];
+    } else if ([name isEqualToString:@"space"]) {
+        self.space = [(NSNumber *)prop floatValue];
+    } else {
+        [super blendView:view forPropName:name propValue:prop];
+    }
+}
+
+- (void)blendChild:(DoricViewNode *)child layoutConfig:(NSDictionary *)layoutconfig {
+    [super blendChild:child layoutConfig:layoutconfig];
+    if (![child.layoutParams isKindOfClass:VHLayoutParams.class]) {
+        DoricLog(@"blend VLayout child error,layout params not match");
+        return;
+    }
+    VHLayoutParams *params = (VHLayoutParams *)child.layoutParams;
+    NSDictionary *margin = [layoutconfig objectForKey:@"margin"];
+    if (margin) {
+        params.margin.top = [(NSNumber *)[margin objectForKey:@"top"] floatValue];
+        params.margin.left = [(NSNumber *)[margin objectForKey:@"left"] floatValue];
+        params.margin.right = [(NSNumber *)[margin objectForKey:@"right"] floatValue];
+        params.margin.bottom = [(NSNumber *)[margin objectForKey:@"bottom"] floatValue];
+    }
+    NSNumber *alignment = [layoutconfig objectForKey:@"alignment"];
+    if (alignment) {
+        params.alignment = [alignment integerValue];
+    }
+}
+
+- (LayoutParams *)generateDefaultLayoutParams {
+    return [[VHLayoutParams alloc] init];
+}
+
 - (void)measureByParent:(DoricGroupNode *)parent {
     DoricLayoutDesc widthSpec = self.layoutParams.width;
     DoricLayoutDesc heightSpec = self.layoutParams.height;
     CGFloat maxWidth = 0,maxHeight = 0;
     for (DoricViewNode *child in self.indexedChildren) {
         [child measureByParent:self];
-        UIView *childView = child.view;
-        CGFloat placeWidth = childView.width + child.layoutParams.margin.left + child.layoutParams.margin.right;
-        CGFloat placeHeight = childView.height + child.layoutParams.margin.top + child.layoutParams.margin.bottom;
+        CGFloat placeWidth = child.measuredWidth;
+        CGFloat placeHeight = child.measuredHeight;
         maxWidth = MAX(maxWidth, placeWidth);
         maxHeight += placeHeight + self.space;
     }
@@ -34,52 +68,61 @@ - (void)measureByParent:(DoricGroupNode *)parent {
     self.desiredHeight = maxHeight;
     
     if (widthSpec == LAYOUT_WRAP_CONTENT) {
-        self.view.width = maxWidth;
+        self.width = maxWidth;
     }
     
     if (heightSpec == LAYOUT_WRAP_CONTENT) {
-        self.view.height = maxHeight;
+        self.height = maxHeight;
     }
 }
 
 - (void)layoutByParent:(DoricGroupNode *)parent {
     if (self.layoutParams.width == LAYOUT_MATCH_PARENT) {
-        self.view.width = parent.view.width;
+        self.width = parent.width;
     }
     if (self.layoutParams.height == LAYOUT_MATCH_PARENT) {
-        self.view.height = parent.view.height;
+        self.height = parent.height;
     }
-    CGFloat start = 0;
+    // layotu child
+    CGFloat xStart = 0, yStart = 0;
+    if ((self.gravity & LEFT) == LEFT) {
+        xStart = 0;
+    } else if ((self.gravity & RIGHT) == RIGHT) {
+        xStart = self.width - self.desiredWidth;
+    } else if ((self.gravity & CENTER_X) == CENTER_X) {
+        xStart = (self.width -self.desiredWidth)/2;
+    }
+    
+    if ((self.gravity & TOP) == TOP) {
+        yStart = 0;
+    } else if ((self.gravity & BOTTOM) == BOTTOM) {
+        yStart = self.height - self.desiredHeight;
+    } else if ((self.gravity & CENTER_Y) == CENTER_Y) {
+        yStart = (self.height -self.desiredHeight)/2;
+    }
+    
+    
     for (DoricViewNode *child in self.indexedChildren) {
-        [child measureByParent:self];
-        UIView *childView = child.view;
         if (child.layoutParams.width == LAYOUT_MATCH_PARENT) {
-            childView.width = self.view.width;
+            child.width = self.width;
         }
         if (child.layoutParams.height == LAYOUT_MATCH_PARENT) {
-            childView.height = self.view.height;
+            child.height = self.height;
         }
-        DoricGravity gravity = self.layoutParams.alignment;
-        if ((gravity & LEFT) == LEFT) {
-            childView.left = self.view.left;
-        }
-        if ((gravity & RIGHT) == RIGHT) {
-            childView.right = self.view.right;
-        }
-        if ((gravity & TOP) == TOP) {
-            childView.top = self.view.top;
-        }
-        if ((gravity & BOTTOM) == BOTTOM) {
-            childView.bottom = self.view.bottom;
-        }
-        if ((gravity & CENTER_X) == CENTER_X) {
-            childView.centerX = self.view.centerX;
-        }
-        if ((gravity & CENTER_Y) == CENTER_Y) {
-            childView.centerY = self.view.centerY;
-        }
-        childView.top = start;
-        start = childView.bottom + self.space;
+        if ([child.layoutParams isKindOfClass:VHLayoutParams.class]) {
+            VHLayoutParams *layoutParams = (VHLayoutParams *)child.layoutParams;
+            DoricGravity gravity = layoutParams.alignment;
+            if ((gravity & LEFT) == LEFT) {
+                child.left = xStart;
+            } else if ((gravity & RIGHT) == RIGHT) {
+                child.right = xStart + self.desiredWidth;
+            } else if ((gravity & CENTER_X) == CENTER_X) {
+                child.centerX = xStart + self.desiredWidth/2;
+            }
+        }        
+        child.top = yStart;
+        yStart = child.bottom + self.space;
+        [child layoutByParent:self];
     }
 }
 @end
diff --git a/iOS/Pod/Classes/Shader/DoricViewContainer.h b/iOS/Pod/Classes/Shader/DoricViewContainer.h
index a734b224..5bee8f26 100644
--- a/iOS/Pod/Classes/Shader/DoricViewContainer.h
+++ b/iOS/Pod/Classes/Shader/DoricViewContainer.h
@@ -23,7 +23,7 @@ typedef NS_ENUM(NSInteger,DoricGravity) {
 };
 
 typedef NS_ENUM(NSInteger,DoricLayoutDesc) {
-    LAYOUT_DEFAULT = 0,
+    LAYOUT_ABSOLUTE = 0,
     LAYOUT_MATCH_PARENT = -1,
     LAYOUT_WRAP_CONTENT = -2,
 };
@@ -42,10 +42,22 @@ NS_ASSUME_NONNULL_BEGIN
 @interface LayoutParams : NSObject
 @property (nonatomic) DoricLayoutDesc width;
 @property (nonatomic) DoricLayoutDesc height;
-@property (nonatomic) DoricGravity alignment;
+@end
+
+@interface MarginLayoutParams : LayoutParams
 @property (nonatomic,strong) DoricRect *margin;
 @end
 
+@interface StackLayoutParams : LayoutParams
+@property (nonatomic) DoricGravity alignment;
+@end
+
+@interface VHLayoutParams : MarginLayoutParams
+@property (nonatomic) DoricGravity alignment;
+@property (nonatomic) NSInteger weight;
+@end
+
+
 @interface UIView(DoricContainer)
 
 @property (nonatomic,strong) LayoutParams *layoutParams;
diff --git a/iOS/Pod/Classes/Shader/DoricViewContainer.m b/iOS/Pod/Classes/Shader/DoricViewContainer.m
index 6f67fda4..395c1f58 100644
--- a/iOS/Pod/Classes/Shader/DoricViewContainer.m
+++ b/iOS/Pod/Classes/Shader/DoricViewContainer.m
@@ -21,14 +21,37 @@ - (instancetype)init {
 @end
 
 @implementation LayoutParams
+- (instancetype)init {
+    if (self  = [super init]) {
+        _width = LAYOUT_WRAP_CONTENT;
+        _height = LAYOUT_WRAP_CONTENT;
+    }
+    return self;
+}
+@end
+@implementation MarginLayoutParams
 - (instancetype)init {
     if (self  = [super init]) {
         _margin = [[DoricRect alloc] init];
-        _width = LAYOUT_DEFAULT;
-        _height = LAYOUT_DEFAULT;
+    }
+    return self;
+}@end
+
+@implementation StackLayoutParams
+- (instancetype)init {
+    if (self  = [super init]) {
         _alignment = 0;
     }
     return self;
+}@end
+
+@implementation VHLayoutParams
+- (instancetype)init {
+    if (self  = [super init]) {
+        _alignment = 0;
+        _weight = 0;
+    }
+    return self;
 }
 @end
 
diff --git a/iOS/Pod/Classes/Shader/DoricViewNode.h b/iOS/Pod/Classes/Shader/DoricViewNode.h
index 1f69ac63..00be28a9 100644
--- a/iOS/Pod/Classes/Shader/DoricViewNode.h
+++ b/iOS/Pod/Classes/Shader/DoricViewNode.h
@@ -13,7 +13,7 @@
 NS_ASSUME_NONNULL_BEGIN
 @class DoricGroupNode;
 
-@interface DoricViewNode <V>: DoricContextHolder
+@interface DoricViewNode <V:UIView *>: DoricContextHolder
 
 @property (nonatomic,strong) V view;
 
@@ -37,6 +37,8 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic) CGFloat left;
 @property (nonatomic) CGFloat right;
 @property (nonatomic) CGFloat bottom;
+@property (nonatomic,readonly) CGFloat measuredWidth;
+@property (nonatomic,readonly) CGFloat measuredHeight;
 
 - (V)build:(NSDictionary *)props;
 
@@ -51,7 +53,6 @@ NS_ASSUME_NONNULL_BEGIN
 - (void)layoutByParent:(DoricGroupNode *)parent;
 
 + (DoricViewNode *)create:(DoricContext *)context withType:(NSString *)type;
-
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/iOS/Pod/Classes/Shader/DoricViewNode.m b/iOS/Pod/Classes/Shader/DoricViewNode.m
index 509f9f47..3b7341ab 100644
--- a/iOS/Pod/Classes/Shader/DoricViewNode.m
+++ b/iOS/Pod/Classes/Shader/DoricViewNode.m
@@ -33,6 +33,7 @@ - (void)blendView:(UIView *)view forPropName:(NSString *)name propValue:(id)prop
         if ([width integerValue] < 0) {
             self.layoutParams.width = [width integerValue];
         } else {
+            self.layoutParams.width = LAYOUT_ABSOLUTE;
             view.width = [width floatValue];
         }
     } else if([name isEqualToString:@"height"]) {
@@ -40,6 +41,7 @@ - (void)blendView:(UIView *)view forPropName:(NSString *)name propValue:(id)prop
         if ([height integerValue] < 0) {
             self.layoutParams.height = [height integerValue];
         } else {
+            self.layoutParams.height = LAYOUT_ABSOLUTE;
             view.height = [height floatValue];
         }
     } else if([name isEqualToString:@"x"]) {
@@ -57,6 +59,22 @@ - (void)blendView:(UIView *)view forPropName:(NSString *)name propValue:(id)prop
     }
 }
 
+- (CGFloat)measuredWidth {
+    if ([self.layoutParams isKindOfClass: MarginLayoutParams.class]) {
+        MarginLayoutParams *marginParams = (MarginLayoutParams *)self.layoutParams;
+        return self.width + marginParams.margin.left + marginParams.margin.right;
+    }
+    return self.width;
+}
+
+- (CGFloat)measuredHeight {
+    if ([self.layoutParams isKindOfClass: MarginLayoutParams.class]) {
+        MarginLayoutParams *marginParams = (MarginLayoutParams *)self.layoutParams;
+        return self.height + marginParams.margin.top + marginParams.margin.bottom;
+    }
+    return self.height;
+}
+
 - (void)measureByParent:(DoricGroupNode *)parent {
     
 }
diff --git a/iOS/Pod/Classes/Util/DoricUtil.m b/iOS/Pod/Classes/Util/DoricUtil.m
index 9fd913f4..b638bd14 100644
--- a/iOS/Pod/Classes/Util/DoricUtil.m
+++ b/iOS/Pod/Classes/Util/DoricUtil.m
@@ -17,9 +17,9 @@ void DoricLog(NSString * _Nonnull format, ...) {
 UIColor *DoricColor(NSNumber *number) {
     CGFloat r, g, b, a;
     long colorValue = [number longValue];
-    a = ((colorValue >> 6) & 0xff)/225.0f;
-    r = ((colorValue >> 4) & 0xff)/225.0f;
-    g = ((colorValue >> 2) & 0xff)/225.0f;
-    b = ((colorValue >> 0) & 0xff)/225.0f;
+    a = ((colorValue >> 24) & 0xff)/255.0f;
+    r = ((colorValue >> 16) & 0xff)/255.0f;
+    g = ((colorValue >> 8) & 0xff)/255.0f;
+    b = ((colorValue >> 0) & 0xff)/255.0f;
     return [UIColor colorWithRed:r green:g blue:b alpha:a];
 }