diff --git a/.travis.yml b/.travis.yml
index 7cd038e..615a4d5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,8 +11,9 @@ before_install:
   - curl https://gist.githubusercontent.com/noamtamim/b04ef67239d2b43638aa5a9a024a1937/raw/56f1a38dd88a3774b71a063822444f3961d61873/android-sdk-license.sh | sh
 
 script:
-  - ./gradlew assembleDebug
-  - cp ./app/build/outputs/apk/debug/app-debug.apk ./IRbaby.apk
+  - ./gradlew assembleRelease
+  - cp ./app/build/outputs/apk/release/app-release.apk ./IRbaby.apk
+
 deploy:
   provider: releases
   api_key: "$TOKEN"
diff --git a/app/build.gradle b/app/build.gradle
index aa7d199..d0f9339 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -12,13 +12,20 @@ android {
         versionName "0.2"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
+
+    signingConfigs {
+        release {
+            storeFile file("release-key/irbaby.jks")
+            keyAlias ("key0")
+            keyPassword ("as13348848836")
+            storePassword ("as13348848836")
+        }
+    }
     buildTypes {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-            debuggable = true
-            jniDebuggable = true
-            renderscriptDebuggable = true
+            signingConfig signingConfigs.release
         }
 
         debug {
diff --git a/app/release-key/irbaby.jks b/app/release-key/irbaby.jks
new file mode 100644
index 0000000..f63eacd
Binary files /dev/null and b/app/release-key/irbaby.jks differ
diff --git a/app/release/app-release.apk b/app/release/app-release.apk
new file mode 100644
index 0000000..b2b342f
Binary files /dev/null and b/app/release/app-release.apk differ
diff --git a/app/release/output.json b/app/release/output.json
new file mode 100644
index 0000000..128bf41
--- /dev/null
+++ b/app/release/output.json
@@ -0,0 +1 @@
+[{"outputType":{"type":"APK"},"apkData":{"type":"MAIN","splits":[],"versionCode":2,"versionName":"0.2","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 182c37d..2430b52 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -12,8 +12,9 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
+        android:usesCleartextTraffic="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".ui.appliances.ExportActivity"></activity>
+        <activity android:name=".ui.appliances.ExportActivity" />
         <activity android:name=".ui.devices.DeviceSettingsActivity" />
         <activity android:name=".ui.appliances.ApplianceSelectActivity" />
         <activity android:name=".ui.appliances.ACControlActivity" />
@@ -31,10 +32,10 @@
 
         <meta-data
             android:name="irext_app_key"
-            android:value="d49811846c8ec6404a0bfedffe35100c" />
+            android:value="26a7303fc1ee622d751b51ea2a1aaee9" />
         <meta-data
             android:name="irext_app_secret"
-            android:value="42853beac09b0d40b2b0f702011f23e6" />
+            android:value="0140b26151901859539c794289543a12" />
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/top/caffreyfans/irbaby/IRApplication.java b/app/src/main/java/top/caffreyfans/irbaby/IRApplication.java
index 87d7c2e..b9ae592 100644
--- a/app/src/main/java/top/caffreyfans/irbaby/IRApplication.java
+++ b/app/src/main/java/top/caffreyfans/irbaby/IRApplication.java
@@ -1,7 +1,10 @@
 package top.caffreyfans.irbaby;
 
+import android.util.Log;
+
 import com.activeandroid.ActiveAndroid;
 import net.irext.webapi.WebAPIs;
+import net.irext.webapi.utils.PackageUtils;
 
 import org.litepal.LitePal;
 
@@ -33,6 +36,8 @@ public void run() {
         }.start();
 
         new UdpReceiveThread().start();
+
+        Log.d(TAG, "onCreate: " + PackageUtils.getCertificateSHA1Fingerprint(this));
     }
 }
 
diff --git a/app/src/main/java/top/caffreyfans/irbaby/ui/appliances/ApplianceSelectActivity.java b/app/src/main/java/top/caffreyfans/irbaby/ui/appliances/ApplianceSelectActivity.java
index b665d5c..4e7fa19 100644
--- a/app/src/main/java/top/caffreyfans/irbaby/ui/appliances/ApplianceSelectActivity.java
+++ b/app/src/main/java/top/caffreyfans/irbaby/ui/appliances/ApplianceSelectActivity.java
@@ -72,11 +72,15 @@ protected void onCreate(Bundle savedInstanceState) {
             actionBar.setHomeButtonEnabled(true);
             actionBar.setDisplayHomeAsUpEnabled(true);
         }
+    }
+
 
+    @Override
+    protected void onStart() {
+        super.onStart();
         new FetchData().execute();
     }
 
-
     private class FetchData extends AsyncTask<Void, Void, List<String>> {
 
         private List<Category> mCategoryList;
@@ -117,10 +121,10 @@ protected void onPostExecute(List<String> stringList) {
             super.onPostExecute(stringList);
             mProgressBar.setVisibility(View.INVISIBLE);
             mListView.setVisibility(View.VISIBLE);
-
             AppliancesSelectAdapter appliancesSelectAdapter = new AppliancesSelectAdapter(mContext, stringList);
             mListView.setAdapter(appliancesSelectAdapter);
 
+            Log.d(TAG, "onPostExecute: " + stringList.toString());
             mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
 
                 @Override
diff --git a/web-api/src/main/java/net/irext/webapi/WebAPIs.java b/web-api/src/main/java/net/irext/webapi/WebAPIs.java
index 08af24d..d16ec4b 100644
--- a/web-api/src/main/java/net/irext/webapi/WebAPIs.java
+++ b/web-api/src/main/java/net/irext/webapi/WebAPIs.java
@@ -176,7 +176,6 @@ public List<Category> listCategories() {
         listCategoriesRequest.setCount(mCount);
         String bodyJson = listCategoriesRequest.toJson();
 
-        Log.d(TAG, "listCategories: " + bodyJson);
 
         try {
             String response = postToServer(listCategoriesURL, bodyJson);
@@ -311,7 +310,6 @@ public List<RemoteIndex> listRemoteIndexes(int categoryId,
 
         try {
             String response = postToServer(listIndexesURL, bodyJson);
-            Log.d(TAG, "listRemoteIndexes: " + response);
             IndexesResponse indexesResponse = new Gson().fromJson(response, IndexesResponse.class);
 
             if (indexesResponse.getStatus().getCode() == Constants.ERROR_CODE_SUCCESS) {