update travis ci
diff --git a/ios/Podfile b/ios/Podfile
index ae54cb7..cc83427 100644
--- a/ios/Podfile
+++ b/ios/Podfile
@@ -8,7 +8,7 @@
     if File.file?('../../.gitmodules') && File.readlines('../../.gitmodules').grep(/submodule \"weex-playground\"/).size > 0
     	pod 'WeexSDK', :path => '../../'
     else
-        pod 'WeexSDK'
+        pod 'WeexSDK', :git => 'https://github.com/apache/incubator-weex.git'
     end
     
     pod 'WXDevtool','0.20.0'
diff --git a/ios/Podfile.lock b/ios/Podfile.lock
new file mode 100644
index 0000000..5eb3930
--- /dev/null
+++ b/ios/Podfile.lock
@@ -0,0 +1,84 @@
+PODS:
+  - ATSDK-Weex (0.0.1)
+  - BindingX (1.0.3):
+    - WeexPluginLoader
+    - WeexSDK
+  - libwebp (1.0.2):
+    - libwebp/core (= 1.0.2)
+    - libwebp/dec (= 1.0.2)
+    - libwebp/demux (= 1.0.2)
+    - libwebp/dsp (= 1.0.2)
+    - libwebp/enc (= 1.0.2)
+    - libwebp/mux (= 1.0.2)
+    - libwebp/utils (= 1.0.2)
+    - libwebp/webp (= 1.0.2)
+  - libwebp/core (1.0.2):
+    - libwebp/webp
+  - libwebp/dec (1.0.2):
+    - libwebp/core
+  - libwebp/demux (1.0.2):
+    - libwebp/core
+  - libwebp/dsp (1.0.2):
+    - libwebp/core
+  - libwebp/enc (1.0.2):
+    - libwebp/core
+  - libwebp/mux (1.0.2):
+    - libwebp/core
+  - libwebp/utils (1.0.2):
+    - libwebp/core
+  - libwebp/webp (1.0.2)
+  - SDWebImage (3.7.5):
+    - SDWebImage/Core (= 3.7.5)
+  - SDWebImage/Core (3.7.5)
+  - SDWebImage/WebP (3.7.5):
+    - libwebp
+    - SDWebImage/Core
+  - SocketRocket (0.4.2)
+  - WeexPluginLoader (0.0.1.9.1):
+    - WeexSDK
+  - WeexSDK (0.26.0)
+  - WXDevtool (0.20.0):
+    - SocketRocket
+    - WeexSDK
+
+DEPENDENCIES:
+  - ATSDK-Weex (= 0.0.1)
+  - BindingX (= 1.0.3)
+  - SDWebImage (= 3.7.5)
+  - SDWebImage/WebP
+  - SocketRocket (= 0.4.2)
+  - WeexSDK (from `https://github.com/apache/incubator-weex.git`)
+  - WXDevtool (= 0.20.0)
+
+SPEC REPOS:
+  https://github.com/cocoapods/specs.git:
+    - ATSDK-Weex
+    - BindingX
+    - libwebp
+    - SDWebImage
+    - SocketRocket
+    - WeexPluginLoader
+    - WXDevtool
+
+EXTERNAL SOURCES:
+  WeexSDK:
+    :git: https://github.com/apache/incubator-weex.git
+
+CHECKOUT OPTIONS:
+  WeexSDK:
+    :commit: 72c51f0763e24c9753d2935009da768e63ecf1ca
+    :git: https://github.com/apache/incubator-weex.git
+
+SPEC CHECKSUMS:
+  ATSDK-Weex: 1b27558f4336d77fb97704d34fc6ad1fd468592c
+  BindingX: b3c6c1c5dcd8e50277cfc5daad09d7010c227524
+  libwebp: b068a3bd7c45f7460f6715be7bed1a18fd5d6b48
+  SDWebImage: 69c6303e3348fba97e03f65d65d4fbc26740f461
+  SocketRocket: ffe08119b00ef982f6c37052a4705a057c8494ad
+  WeexPluginLoader: 85c1304f8ba29864e58531614a0acfeceef1b85c
+  WeexSDK: 5ef01c4ea4e94eba8be48b92c825b5668b30cfa0
+  WXDevtool: 833dd3e835df1f5f278fc8865c865d48196bfdab
+
+PODFILE CHECKSUM: 443561ccc3fb5ed92bd187a9a211ab82b55bfda8
+
+COCOAPODS: 1.7.4
diff --git a/ios/WeexDemo.xcworkspace/xcuserdata/wangrenmin.xcuserdatad/UserInterfaceState.xcuserstate b/ios/WeexDemo.xcworkspace/xcuserdata/wangrenmin.xcuserdatad/UserInterfaceState.xcuserstate
index c434548..9d9fb2a 100644
--- a/ios/WeexDemo.xcworkspace/xcuserdata/wangrenmin.xcuserdatad/UserInterfaceState.xcuserstate
+++ b/ios/WeexDemo.xcworkspace/xcuserdata/wangrenmin.xcuserdatad/UserInterfaceState.xcuserstate
Binary files differ
diff --git a/ios/WeexDemo/WXDemoViewController.m b/ios/WeexDemo/WXDemoViewController.m
index a412113..01ef8e8 100644
--- a/ios/WeexDemo/WXDemoViewController.m
+++ b/ios/WeexDemo/WXDemoViewController.m
@@ -91,7 +91,7 @@
 - (void)viewDidDisappear:(BOOL)animated
 {
     [super viewDidDisappear:animated];
-//    [_instance didDisappear];
+    [_instance didDisappear];
     [self updateInstanceState:WeexInstanceDisappear];
 }
 
@@ -107,7 +107,7 @@
 - (void)viewWillAppear:(BOOL)animated
 {
     [super viewWillAppear:animated];
-//    [_instance willAppear];
+    [_instance willAppear];
     [self setupNaviBar];
     [self setupRightBarItem];
     [self.navigationController setNavigationBarHidden:_showNavigationBar];
@@ -147,16 +147,16 @@
 - (void)render
 {
     CGFloat width = self.view.frame.size.width;
-//    if ([_url.absoluteString isEqualToString:HOME_URL]) {
-//        [self.navigationController setNavigationBarHidden:YES];
-//    }
+    if ([_url.absoluteString isEqualToString:HOME_URL]) {
+        [self.navigationController setNavigationBarHidden:YES];
+    }
     [_instance destroyInstance];
     _instance = [[WXSDKInstance alloc] init];
     if([WXPrerenderManager isTaskExist:[self.url absoluteString]]){
         _instance = [WXPrerenderManager instanceFromUrl:self.url.absoluteString];
     }
     
-//    _instance.isMainContainerStack = YES;
+    _instance.isMainContainerStack = YES;
     _instance.viewController = self;
     UIEdgeInsets safeArea = UIEdgeInsetsZero;