diff --git a/README.md b/README.md
index d295a03..31e3fef 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,10 @@
 - [Getting Started with STVideoSDK](https://github.com/shunfei/STVideoSDK-Android/blob/master/Docs/Getting_Started.md)
 
 ## Change Log
+12/07/2016 - v2.0.4
+* New support Https.
+* Modify UI impression.
+
 11/09/2016 - v2.0.3
 * Update API.
 * New support Security verification
diff --git a/STVideoSDK/suntengvideo2.0.3.jar b/STVideoSDK/suntengvideo2.0.4.jar
similarity index 69%
rename from STVideoSDK/suntengvideo2.0.3.jar
rename to STVideoSDK/suntengvideo2.0.4.jar
index 7e9bea1..049e2a4 100644
Binary files a/STVideoSDK/suntengvideo2.0.3.jar and b/STVideoSDK/suntengvideo2.0.4.jar differ
diff --git a/STVideoSDKSample/VideoAdSample/.idea/libraries/STVideoSDK_2_0_3.xml b/STVideoSDKSample/VideoAdSample/.idea/libraries/STVideoSDK_2_0_4.xml
similarity index 55%
rename from STVideoSDKSample/VideoAdSample/.idea/libraries/STVideoSDK_2_0_3.xml
rename to STVideoSDKSample/VideoAdSample/.idea/libraries/STVideoSDK_2_0_4.xml
index 5facc91..b067f97 100644
--- a/STVideoSDKSample/VideoAdSample/.idea/libraries/STVideoSDK_2_0_3.xml
+++ b/STVideoSDKSample/VideoAdSample/.idea/libraries/STVideoSDK_2_0_4.xml
@@ -1,7 +1,7 @@
 <component name="libraryTable">
-  <library name="STVideoSDK-2.0.3">
+  <library name="STVideoSDK-2.0.4">
     <CLASSES>
-      <root url="jar://$PROJECT_DIR$/app/libs/STVideoSDK-2.0.3.jar!/" />
+      <root url="jar://$PROJECT_DIR$/app/libs/STVideoSDK-2.0.4.jar!/" />
     </CLASSES>
     <JAVADOC />
     <SOURCES />
diff --git a/STVideoSDKSample/VideoAdSample/.idea/libraries/rules_0_5.xml b/STVideoSDKSample/VideoAdSample/.idea/libraries/rules_0_5.xml
index 0c5aff1..becb958 100644
--- a/STVideoSDKSample/VideoAdSample/.idea/libraries/rules_0_5.xml
+++ b/STVideoSDKSample/VideoAdSample/.idea/libraries/rules_0_5.xml
@@ -4,8 +4,8 @@
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support.test/rules/0.5/annotations.zip!/" />
     </ANNOTATIONS>
     <CLASSES>
-      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support.test/rules/0.5/res" />
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support.test/rules/0.5/jars/classes.jar!/" />
+      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support.test/rules/0.5/res" />
     </CLASSES>
     <JAVADOC />
     <SOURCES>
diff --git a/STVideoSDKSample/VideoAdSample/.idea/libraries/runner_0_5.xml b/STVideoSDKSample/VideoAdSample/.idea/libraries/runner_0_5.xml
index 3879b73..6dfa8fb 100644
--- a/STVideoSDKSample/VideoAdSample/.idea/libraries/runner_0_5.xml
+++ b/STVideoSDKSample/VideoAdSample/.idea/libraries/runner_0_5.xml
@@ -4,8 +4,8 @@
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support.test/runner/0.5/annotations.zip!/" />
     </ANNOTATIONS>
     <CLASSES>
-      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support.test/runner/0.5/res" />
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support.test/runner/0.5/jars/classes.jar!/" />
+      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support.test/runner/0.5/res" />
     </CLASSES>
     <JAVADOC />
     <SOURCES>
diff --git a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_compat_24_2_1.xml b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_compat_24_2_1.xml
index 3f2be0c..7766970 100644
--- a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_compat_24_2_1.xml
+++ b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_compat_24_2_1.xml
@@ -4,8 +4,8 @@
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-compat/24.2.1/annotations.zip!/" />
     </ANNOTATIONS>
     <CLASSES>
-      <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-compat/24.2.1/jars/classes.jar!/" />
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-compat/24.2.1/jars/libs/internal_impl-24.2.1.jar!/" />
+      <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-compat/24.2.1/jars/classes.jar!/" />
       <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-compat/24.2.1/res" />
     </CLASSES>
     <JAVADOC />
diff --git a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_core_ui_24_2_1.xml b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_core_ui_24_2_1.xml
index c36f766..4dbc5c2 100644
--- a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_core_ui_24_2_1.xml
+++ b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_core_ui_24_2_1.xml
@@ -4,9 +4,9 @@
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-core-ui/24.2.1/annotations.zip!/" />
     </ANNOTATIONS>
     <CLASSES>
-      <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-core-ui/24.2.1/jars/libs/internal_impl-24.2.1.jar!/" />
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-core-ui/24.2.1/jars/classes.jar!/" />
       <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-core-ui/24.2.1/res" />
+      <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-core-ui/24.2.1/jars/libs/internal_impl-24.2.1.jar!/" />
     </CLASSES>
     <JAVADOC />
     <SOURCES>
diff --git a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_core_utils_24_2_1.xml b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_core_utils_24_2_1.xml
index 09de7e4..18f03b5 100644
--- a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_core_utils_24_2_1.xml
+++ b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_core_utils_24_2_1.xml
@@ -1,9 +1,9 @@
 <component name="libraryTable">
   <library name="support-core-utils-24.2.1">
     <CLASSES>
+      <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-core-utils/24.2.1/jars/classes.jar!/" />
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-core-utils/24.2.1/jars/libs/internal_impl-24.2.1.jar!/" />
       <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-core-utils/24.2.1/res" />
-      <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-core-utils/24.2.1/jars/classes.jar!/" />
     </CLASSES>
     <JAVADOC />
     <SOURCES>
diff --git a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_fragment_24_2_1.xml b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_fragment_24_2_1.xml
index 5f6f227..c0ff681 100644
--- a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_fragment_24_2_1.xml
+++ b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_fragment_24_2_1.xml
@@ -4,9 +4,9 @@
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-fragment/24.2.1/annotations.zip!/" />
     </ANNOTATIONS>
     <CLASSES>
-      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-fragment/24.2.1/res" />
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-fragment/24.2.1/jars/libs/internal_impl-24.2.1.jar!/" />
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-fragment/24.2.1/jars/classes.jar!/" />
+      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-fragment/24.2.1/res" />
     </CLASSES>
     <JAVADOC />
     <SOURCES>
diff --git a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_media_compat_24_2_1.xml b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_media_compat_24_2_1.xml
index 840180c..cf0b577 100644
--- a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_media_compat_24_2_1.xml
+++ b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_media_compat_24_2_1.xml
@@ -4,8 +4,8 @@
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-media-compat/24.2.1/annotations.zip!/" />
     </ANNOTATIONS>
     <CLASSES>
-      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-media-compat/24.2.1/res" />
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-media-compat/24.2.1/jars/classes.jar!/" />
+      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-media-compat/24.2.1/res" />
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-media-compat/24.2.1/jars/libs/internal_impl-24.2.1.jar!/" />
     </CLASSES>
     <JAVADOC />
diff --git a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_vector_drawable_24_2_1.xml b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_vector_drawable_24_2_1.xml
index 9f96fd4..6bfca67 100644
--- a/STVideoSDKSample/VideoAdSample/.idea/libraries/support_vector_drawable_24_2_1.xml
+++ b/STVideoSDKSample/VideoAdSample/.idea/libraries/support_vector_drawable_24_2_1.xml
@@ -1,8 +1,8 @@
 <component name="libraryTable">
   <library name="support-vector-drawable-24.2.1">
     <CLASSES>
-      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-vector-drawable/24.2.1/res" />
       <root url="jar://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-vector-drawable/24.2.1/jars/classes.jar!/" />
+      <root url="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/support-vector-drawable/24.2.1/res" />
     </CLASSES>
     <JAVADOC />
     <SOURCES>
diff --git a/STVideoSDKSample/VideoAdSample/.idea/misc.xml b/STVideoSDKSample/VideoAdSample/.idea/misc.xml
index fbb6828..5d19981 100644
--- a/STVideoSDKSample/VideoAdSample/.idea/misc.xml
+++ b/STVideoSDKSample/VideoAdSample/.idea/misc.xml
@@ -37,7 +37,7 @@
     <ConfirmationsSetting value="0" id="Add" />
     <ConfirmationsSetting value="0" id="Remove" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/STVideoSDKSample/VideoAdSample/.idea/vcs.xml b/STVideoSDKSample/VideoAdSample/.idea/vcs.xml
new file mode 100644
index 0000000..b2bdec2
--- /dev/null
+++ b/STVideoSDKSample/VideoAdSample/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/STVideoSDKSample/VideoAdSample/app/build.gradle b/STVideoSDKSample/VideoAdSample/app/build.gradle
index 8a50fe4..e4f7ea9 100644
--- a/STVideoSDKSample/VideoAdSample/app/build.gradle
+++ b/STVideoSDKSample/VideoAdSample/app/build.gradle
@@ -1,6 +1,14 @@
 apply plugin: 'com.android.application'
 
 android {
+    signingConfigs {
+        config {
+            keyAlias 'sunteng'
+            keyPassword 'bai1994'
+            storeFile file('/Users/baishixian/keystore/release-sign-key.jks')
+            storePassword 'bai1994'
+        }
+    }
     compileSdkVersion 25
     buildToolsVersion "25.0.0"
     defaultConfig {
@@ -26,5 +34,5 @@ dependencies {
     })
     compile 'com.android.support:appcompat-v7:24.2.1'
     testCompile 'junit:junit:4.12'
-    compile files('libs/STVideoSDK-2.0.3.jar')
+    compile files('libs/STVideoSDK-2.0.4.jar')
 }
diff --git a/STVideoSDKSample/VideoAdSample/app/libs/STVideoSDK-2.0.3.jar b/STVideoSDKSample/VideoAdSample/app/libs/STVideoSDK-2.0.4.jar
similarity index 69%
rename from STVideoSDKSample/VideoAdSample/app/libs/STVideoSDK-2.0.3.jar
rename to STVideoSDKSample/VideoAdSample/app/libs/STVideoSDK-2.0.4.jar
index 6b0c5c6..049e2a4 100644
Binary files a/STVideoSDKSample/VideoAdSample/app/libs/STVideoSDK-2.0.3.jar and b/STVideoSDKSample/VideoAdSample/app/libs/STVideoSDK-2.0.4.jar differ
diff --git a/STVideoSDKSample/VideoAdSample/app/src/main/java/com/sunteng/videoadsample/MainActivity.java b/STVideoSDKSample/VideoAdSample/app/src/main/java/com/sunteng/videoadsample/MainActivity.java
index 8560d95..616d380 100644
--- a/STVideoSDKSample/VideoAdSample/app/src/main/java/com/sunteng/videoadsample/MainActivity.java
+++ b/STVideoSDKSample/VideoAdSample/app/src/main/java/com/sunteng/videoadsample/MainActivity.java
@@ -36,6 +36,13 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        //避免非静默安装apk文件时，导致按home键退到后台再点击图标进入程序出现的内容展示错误。
+        if (!isTaskRoot()){
+            finish();
+            return;
+        }
+
         setContentView(R.layout.activity_main);
 
         mContext = this;