diff --git a/Android/app/src/main/java/com/github/penfeizhou/doricdemo/MainActivity.java b/Android/app/src/main/java/com/github/penfeizhou/doricdemo/MainActivity.java
index 0b930451..d95c6481 100644
--- a/Android/app/src/main/java/com/github/penfeizhou/doricdemo/MainActivity.java
+++ b/Android/app/src/main/java/com/github/penfeizhou/doricdemo/MainActivity.java
@@ -9,7 +9,6 @@ import com.github.penfeizhou.doric.Doric;
 import com.github.penfeizhou.doric.DoricContext;
 import com.github.penfeizhou.doric.dev.LocalServer;
 import com.github.penfeizhou.doric.utils.DoricUtils;
-import com.github.pengfeizhou.jscore.JSONBuilder;
 
 import java.io.IOException;
 
diff --git a/iOS/Example/Example/ViewController.m b/iOS/Example/Example/ViewController.m
index 8d1a878f..53eaaadd 100644
--- a/iOS/Example/Example/ViewController.m
+++ b/iOS/Example/Example/ViewController.m
@@ -26,8 +26,7 @@ - (void)viewDidLoad {
     NSString *jsContent = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
     self.doricContext = [[DoricContext alloc] initWithScript:jsContent source:@"Snake"];
     self.doricContext.rootNode.view = self.view;
-    [self.doricContext callEntity:@"__init__",@{@"width": [NSNumber numberWithFloat:self.view.width],
-                                                @"height":[NSNumber numberWithFloat:self.view.height]},nil];
+    [self.doricContext initContextWithWidth:self.view.width height:self.view.height];
 }
 
 
diff --git a/iOS/Pod/Classes/DoricContext.h b/iOS/Pod/Classes/DoricContext.h
index 9bdb10ba..9c747761 100644
--- a/iOS/Pod/Classes/DoricContext.h
+++ b/iOS/Pod/Classes/DoricContext.h
@@ -18,6 +18,9 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic,strong) DoricDriver *driver;
 @property (nonatomic,strong) NSMutableDictionary *pluginInstanceMap;
 @property (nonatomic,strong) DoricRootNode *rootNode;
+@property (nonatomic,strong) NSString *source;
+@property (nonatomic,strong) NSString *script;;
+@property (nonatomic,strong) NSDictionary *initialParams;
 
 - (instancetype)initWithScript:(NSString *)script source:(NSString *)source;
 
@@ -27,6 +30,14 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (DoricAsyncResult *)callEntity:(NSString *)method withArgumentsArray:(NSArray *)args;
 
+- (void)initContextWithWidth:(CGFloat)width height:(CGFloat)height;
+
+- (void)reload:(NSString *)script;
+
+- (void)onShow;
+
+- (void)onHidden;
+
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/iOS/Pod/Classes/DoricContext.m b/iOS/Pod/Classes/DoricContext.m
index 395867c8..05c42e8e 100644
--- a/iOS/Pod/Classes/DoricContext.m
+++ b/iOS/Pod/Classes/DoricContext.m
@@ -8,6 +8,7 @@
 #import "DoricContext.h"
 #import "DoricContextManager.h"
 #import "DoricRootNode.h"
+#import "DoricConstant.h"
 
 @implementation DoricContext
 
@@ -17,11 +18,16 @@ - (instancetype)initWithScript:(NSString *)script source:(NSString *)source {
         _pluginInstanceMap = [[NSMutableDictionary alloc] init];
         [[DoricContextManager instance] createContext:self script:script source:source];
         _rootNode = [[DoricRootNode alloc] initWithContext:self];
+        _script = script;
+        _source = source;
+        _initialParams =[@{@"width":@(LAYOUT_MATCH_PARENT) ,@"height":@(LAYOUT_MATCH_PARENT)} mutableCopy];
+        [self callEntity:DORIC_ENTITY_CREATE,nil];
     }
     return self;
 }
 
 - (void)dealloc {
+    [self callEntity:DORIC_ENTITY_DESTROY,nil];
     [[DoricContextManager instance] destroyContext:self];
 }
 
@@ -36,7 +42,29 @@ - (DoricAsyncResult *)callEntity:(NSString *)method, ... {
 - (DoricAsyncResult *)callEntity:(NSString *)method withArguments:(va_list)args {
     return [self.driver invokeContextEntity:self.contextId method:method arguments:args];
 }
+
 - (DoricAsyncResult *)callEntity:(NSString *)method withArgumentsArray:(NSArray *)args {
     return [self.driver invokeContextEntity:self.contextId method:method argumentsArray:args];
 }
+
+- (void)initContextWithWidth:(CGFloat)width height:(CGFloat)height {
+    [self.initialParams setValue:@(width) forKey:@"width"];
+    [self.initialParams setValue:@(height) forKey:@"height"];
+    [self callEntity:DORIC_ENTITY_INIT,self.initialParams,nil];
+}
+
+- (void)reload:(NSString *)script {
+    self.script = script;
+    [self.driver createContext:self.contextId script:script source:self.source];
+    [self callEntity:DORIC_ENTITY_INIT,self.initialParams,nil];
+}
+
+- (void)onShow {
+    [self callEntity:DORIC_ENTITY_SHOW,nil];
+}
+
+- (void)onHidden {
+    [self callEntity:DORIC_ENTITY_HIDDEN,nil];
+}
+
 @end
diff --git a/iOS/Pod/Classes/Util/DoricConstant.h b/iOS/Pod/Classes/Util/DoricConstant.h
index c60f38e9..cec978ec 100644
--- a/iOS/Pod/Classes/Util/DoricConstant.h
+++ b/iOS/Pod/Classes/Util/DoricConstant.h
@@ -37,3 +37,13 @@ extern NSString * const DORIC_BRIDGE_RESOLVE;
 extern NSString * const DORIC_BRIDGE_REJECT;
 
 extern NSString * const DORIC_ENTITY_RESPONSE;
+
+extern NSString * const DORIC_ENTITY_INIT;
+
+extern NSString * const DORIC_ENTITY_CREATE;
+
+extern NSString * const DORIC_ENTITY_DESTROY;
+
+extern NSString * const DORIC_ENTITY_SHOW;
+
+extern NSString * const DORIC_ENTITY_HIDDEN;
diff --git a/iOS/Pod/Classes/Util/DoricConstant.m b/iOS/Pod/Classes/Util/DoricConstant.m
index b1bc7a5d..6eacfe64 100644
--- a/iOS/Pod/Classes/Util/DoricConstant.m
+++ b/iOS/Pod/Classes/Util/DoricConstant.m
@@ -54,3 +54,13 @@
 NSString * const DORIC_BRIDGE_REJECT = @"jsCallReject";
 
 NSString * const DORIC_ENTITY_RESPONSE = @"__response__";
+
+NSString * const DORIC_ENTITY_INIT = @"__init__";
+
+NSString * const DORIC_ENTITY_CREATE = @"__onCreate__";
+
+NSString * const DORIC_ENTITY_DESTROY = @"__onDestroy__";
+
+NSString * const DORIC_ENTITY_SHOW = @"__onShow__";
+
+NSString * const DORIC_ENTITY_HIDDEN = @"__onHidden__";