diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index d6a56099..69f162b2 100644
Binary files a/.idea/caches/build_file_checksums.ser and b/.idea/caches/build_file_checksums.ser differ
diff --git a/app/build.gradle b/app/build.gradle
index 0b280778..ef7a2f7c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,15 +1,23 @@
 apply plugin: 'com.android.application'
-def AAVersion = '4.3.1'
+def AAVersion = '4.4.0'
+def SupportLibVersion = '28.0.0'
+
+configurations.all {
+    resolutionStrategy {
+        force "com.android.support:appcompat-v7:${SupportLibVersion}"
+        force "com.android.support:support-v4:${SupportLibVersion}"
+    }
+}
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion '27.0.3'
+    compileSdkVersion versions.compile
+    buildToolsVersion versions.buildTool
     defaultConfig {
         applicationId "org.autojs.autojs"
-        minSdkVersion 17
-        targetSdkVersion 23
-        versionCode 421
-        versionName "4.0.3 Alpha2"
+        minSdkVersion versions.mini
+        targetSdkVersion versions.target
+        versionCode 423
+        versionName "4.0.3 Alpha4"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         multiDexEnabled true
         ndk {
@@ -24,7 +32,7 @@ android {
         }
         release {
             shrinkResources false
-            minifyEnabled true
+            minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
@@ -70,83 +78,83 @@ repositories {
 }
 
 dependencies {
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    testCompile 'junit:junit:4.12'
+    testImplementation 'junit:junit:4.12'
     // Android Annotations
     annotationProcessor "org.androidannotations:androidannotations:$AAVersion"
-    compile "org.androidannotations:androidannotations-api:$AAVersion"
+    implementation "org.androidannotations:androidannotations-api:$AAVersion"
     // ButterKnife
-    compile('com.jakewharton:butterknife:8.6.0', {
+    implementation('com.jakewharton:butterknife:8.8.1', {
         exclude group: 'com.android.support'
     })
-    annotationProcessor 'com.jakewharton:butterknife-compiler:8.6.0'
+    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
     // Android supports
-    compile 'com.android.support:appcompat-v7:27.1.1'
-    compile 'com.android.support:cardview-v7:27.1.1'
-    compile 'com.android.support:design:27.1.1'
-    compile 'com.android.support:multidex:1.0.3'
+    implementation "com.android.support:appcompat-v7:${SupportLibVersion}"
+    implementation "com.android.support:cardview-v7:${SupportLibVersion}"
+    implementation "com.android.support:design:${SupportLibVersion}"
+    implementation 'com.android.support:multidex:1.0.3'
     // Personal libraries
-    compile 'com.github.hyb1996:MutableTheme:0.2.2'
+    implementation 'com.github.hyb1996:MutableTheme:0.2.2'
     // Material Dialogs
-    compile('com.afollestad.material-dialogs:core:0.9.2.3', {
+    implementation('com.afollestad.material-dialogs:core:0.9.2.3', {
         exclude group: 'com.android.support'
     })
     // Common Markdown
-    compile 'com.github.atlassian:commonmark-java:commonmark-parent-0.9.0'
+    implementation 'com.github.atlassian:commonmark-java:commonmark-parent-0.9.0'
     // Android issue reporter (a github issue reporter)
-    compile('com.heinrichreimersoftware:android-issue-reporter:1.3.1', {
+    implementation('com.heinrichreimersoftware:android-issue-reporter:1.3.1', {
         exclude group: 'com.afollestad.material-dialogs'
         exclude group: 'com.android.support'
     })
     //MultiLevelListView
-    compile 'com.github.hyb1996:android-multi-level-listview:1.1'
+    implementation 'com.github.hyb1996:android-multi-level-listview:1.1'
     //Licenses Dialog
-    compile 'de.psdev.licensesdialog:licensesdialog:1.8.1'
+    implementation 'de.psdev.licensesdialog:licensesdialog:1.8.1'
     //Expandable RecyclerView
-    compile 'com.bignerdranch.android:expandablerecyclerview:3.0.0-RC1'
+    implementation 'com.bignerdranch.android:expandablerecyclerview:3.0.0-RC1'
     //FlexibleDivider
-    compile 'com.yqritc:recyclerview-flexibledivider:1.4.0'
+    implementation 'com.yqritc:recyclerview-flexibledivider:1.4.0'
     //???
-    compile 'com.wang.avi:library:2.1.3'
+    implementation 'com.wang.avi:library:2.1.3'
     //Commons-lang
-    compile 'org.apache.commons:commons-lang3:3.6'
+    implementation 'org.apache.commons:commons-lang3:3.6'
     //Expandable RecyclerView
-    compile 'com.thoughtbot:expandablerecyclerview:1.3'
-    compile('com.github.hyb1996:FloatingCircularActionMenu:0.0.4')
-    compile 'com.github.hyb1996:Auto.js-ApkBuilder:1.0.1'
+    implementation 'com.thoughtbot:expandablerecyclerview:1.3'
+    implementation('com.github.hyb1996:FloatingCircularActionMenu:0.0.4')
+    implementation 'com.github.hyb1996:Auto.js-ApkBuilder:1.0.1'
     // RxJava
-    compile "io.reactivex.rxjava2:rxjava:2.1.2"
-    compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
+    implementation "io.reactivex.rxjava2:rxjava:2.1.2"
+    implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
     // Retrofit
-    compile 'com.squareup.retrofit2:retrofit:2.3.0'
-    compile 'com.squareup.retrofit2:converter-gson:2.3.0'
-    compile 'com.squareup.retrofit2:converter-gson:2.3.0'
-    compile 'com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0'
+    implementation 'com.squareup.retrofit2:retrofit:2.3.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
+    implementation 'com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0'
     //Glide
-    compile('com.github.bumptech.glide:glide:4.2.0', {
+    implementation('com.github.bumptech.glide:glide:4.8.0', {
         exclude group: 'com.android.support'
     })
-    annotationProcessor 'com.github.bumptech.glide:compiler:4.2.0'
+    annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0'
     //joda time
-    compile 'joda-time:joda-time:2.9.9'
+    implementation 'joda-time:joda-time:2.9.9'
     // Tasker Plugin
-    compile 'com.twofortyfouram:android-plugin-client-sdk-for-locale:4.0.3'
+    implementation 'com.twofortyfouram:android-plugin-client-sdk-for-locale:4.0.3'
     // Flurry
-    compile 'com.flurry.android:analytics:7.0.0@aar'
+    implementation 'com.flurry.android:analytics:7.0.0@aar'
     // Bugly
-    compile 'com.tencent.bugly:crashreport:2.6.6'
+    implementation 'com.tencent.bugly:crashreport:2.6.6'
     // MaterialDialogCommon
-    compile('com.afollestad.material-dialogs:commons:0.9.2.3', {
+    implementation('com.afollestad.material-dialogs:commons:0.9.2.3', {
         exclude group: 'com.android.support'
     })
     debugImplementation 'com.squareup.leakcanary:leakcanary-android:1.6.1'
     releaseImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.6.1'
     // Optional, if you use support library fragments:
     debugImplementation 'com.squareup.leakcanary:leakcanary-support-fragment:1.6.1'
-    compile project(':automator')
-    compile project(':common')
-    compile project(':autojs')
+    implementation project(':automator')
+    implementation project(':common')
+    implementation project(':autojs')
     implementation (name: 'ads8', ext: 'aar')
 }
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index d68b0544..98304279 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -23,6 +23,7 @@
     <!-- Ad SDK Permissions -->
     <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
 
+
     <application
         xmlns:tools="http://schemas.android.com/tools"
         android:name=".App"
@@ -34,6 +35,10 @@
         android:theme="@style/AppTheme"
         tools:replace="android:label, android:icon, android:allowBackup">
 
+        <meta-data
+            android:name="android.max_aspect"
+            android:value="2.1" />
+
         <activity
             android:name=".ui.splash.SplashActivity"
             android:hardwareAccelerated="true"
diff --git a/app/src/main/java/org/autojs/autojs/model/explorer/ExplorerFileItem.java b/app/src/main/java/org/autojs/autojs/model/explorer/ExplorerFileItem.java
index 443fc7a7..73fbf984 100644
--- a/app/src/main/java/org/autojs/autojs/model/explorer/ExplorerFileItem.java
+++ b/app/src/main/java/org/autojs/autojs/model/explorer/ExplorerFileItem.java
@@ -1,6 +1,7 @@
 package org.autojs.autojs.model.explorer;
 
 import com.stardust.pio.PFile;
+import com.stardust.util.ObjectHelper;
 
 import org.autojs.autojs.model.script.ScriptFile;
 
@@ -9,6 +10,7 @@ import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Set;
 
+
 public class ExplorerFileItem implements ExplorerItem {
 
     private static final Set<String> sEditableFileExts = new HashSet<>(Arrays.asList(
@@ -19,6 +21,7 @@ public class ExplorerFileItem implements ExplorerItem {
     private final ExplorerPage mParent;
 
     public ExplorerFileItem(PFile file, ExplorerPage parent) {
+        ObjectHelper.requireNonNull(file, "file");
         mFile = file;
         mParent = parent;
     }
diff --git a/app/src/main/java/org/autojs/autojs/pluginclient/JsonWebSocket.java b/app/src/main/java/org/autojs/autojs/pluginclient/JsonWebSocket.java
index 73d77eab..641adf46 100644
--- a/app/src/main/java/org/autojs/autojs/pluginclient/JsonWebSocket.java
+++ b/app/src/main/java/org/autojs/autojs/pluginclient/JsonWebSocket.java
@@ -8,11 +8,7 @@ import com.google.gson.JsonParseException;
 import com.google.gson.JsonParser;
 import com.google.gson.stream.JsonReader;
 
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
 import java.io.StringReader;
-import java.net.Socket;
 
 import javax.annotation.Nullable;
 
@@ -23,7 +19,6 @@ import okhttp3.Request;
 import okhttp3.Response;
 import okhttp3.WebSocket;
 import okhttp3.WebSocketListener;
-import okio.ByteString;
 
 public class JsonWebSocket extends WebSocketListener {
 
diff --git a/app/src/main/java/org/autojs/autojs/ui/filechooser/FileChooserDialogBuilder.java b/app/src/main/java/org/autojs/autojs/ui/filechooser/FileChooserDialogBuilder.java
index abd73d02..9ed471b3 100644
--- a/app/src/main/java/org/autojs/autojs/ui/filechooser/FileChooserDialogBuilder.java
+++ b/app/src/main/java/org/autojs/autojs/ui/filechooser/FileChooserDialogBuilder.java
@@ -6,7 +6,6 @@ import android.support.annotation.StringRes;
 
 import com.afollestad.materialdialogs.MaterialDialog;
 import com.stardust.pio.PFile;
-import com.tencent.bugly.crashreport.BuglyLog;
 
 import org.autojs.autojs.R;
 import org.autojs.autojs.model.explorer.Explorer;
diff --git a/app/src/main/java/org/autojs/autojs/ui/main/MainActivity.java b/app/src/main/java/org/autojs/autojs/ui/main/MainActivity.java
index c8d716dd..606485f7 100644
--- a/app/src/main/java/org/autojs/autojs/ui/main/MainActivity.java
+++ b/app/src/main/java/org/autojs/autojs/ui/main/MainActivity.java
@@ -176,6 +176,8 @@ public class MainActivity extends BaseActivity implements OnActivityResultDelega
     }
 
     private void setUpViewPagerFragmentBehaviors() {
+
+
         mPagerAdapter.setOnFragmentInstantiateListener((pos, fragment) -> {
             ((ViewPagerFragment) fragment).setFab(mFab);
             if (pos == mViewPager.getCurrentItem()) {
diff --git a/app/src/main/java/org/autojs/autojs/ui/main/drawer/DrawerFragment.java b/app/src/main/java/org/autojs/autojs/ui/main/drawer/DrawerFragment.java
index 09643151..49e176eb 100644
--- a/app/src/main/java/org/autojs/autojs/ui/main/drawer/DrawerFragment.java
+++ b/app/src/main/java/org/autojs/autojs/ui/main/drawer/DrawerFragment.java
@@ -239,9 +239,9 @@ public class DrawerFragment extends android.support.v4.app.Fragment {
         SettingsActivity.selectThemeColor(getActivity());
     }
 
+    @SuppressLint("CheckResult")
     private void enableAccessibilityServiceByRootIfNeeded() {
         Observable.fromCallable(() -> Pref.shouldEnableAccessibilityServiceByRoot() && !isAccessibilityServiceEnabled())
-                .subscribeOn(Schedulers.computation())
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(needed -> {
                     if (needed) {
diff --git a/autojs/build.gradle b/autojs/build.gradle
index 9e221666..d2f8af64 100644
--- a/autojs/build.gradle
+++ b/autojs/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion '27.0.3'
+    compileSdkVersion versions.compile
+    buildToolsVersion versions.buildTool
 
     defaultConfig {
-        minSdkVersion 17
-        targetSdkVersion 25
+        minSdkVersion versions.mini
+        targetSdkVersion versions.target
         versionCode 1
         versionName "1.0"
 
@@ -35,35 +35,34 @@ repositories {
 }
 
 dependencies {
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    testCompile 'junit:junit:4.12'
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'org.greenrobot:eventbus:3.0.0'
-    compile 'net.lingala.zip4j:zip4j:1.3.2'
-    compile('com.afollestad.material-dialogs:core:0.9.2.3', {
+    testImplementation 'junit:junit:4.12'
+    api fileTree(dir: 'libs', include: ['*.jar'])
+    api 'org.greenrobot:eventbus:3.0.0'
+    api 'net.lingala.zip4j:zip4j:1.3.2'
+    api('com.afollestad.material-dialogs:core:0.9.2.3', {
         exclude group: 'com.android.support'
     })
-    compile 'com.android.support:design:25.4.0'
-    compile 'com.android.support:appcompat-v7:25.4.0'
-    compile 'com.github.hyb1996:EnhancedFloaty:0.21'
-    compile 'com.github.hyb1996:OpenCvLib:2.4.13.4-imgproc'
-    compile 'com.makeramen:roundedimageview:2.3.0'
+    api 'com.android.support:design:28.0.0'
+    api 'com.github.hyb1996:EnhancedFloaty:0.21'
+    api 'com.github.hyb1996:OpenCvLib:2.4.13.4-imgproc'
+    api 'com.makeramen:roundedimageview:2.3.0'
     // OkHttp
-    compile 'com.squareup.okhttp3:okhttp:3.9.0'
+    api 'com.squareup.okhttp3:okhttp:3.10.0'
     //JDeferred
-    compile 'org.jdeferred:jdeferred-android-aar:1.2.6'
+    api 'org.jdeferred:jdeferred-android-aar:1.2.6'
     //RootShell
-    compile 'com.github.Stericson:RootShell:1.6'
+    api 'com.github.Stericson:RootShell:1.6'
     // Gson
-    compile 'com.google.code.gson:gson:2.8.0'
+    api 'com.google.code.gson:gson:2.8.2'
     // Terminal emulator
-    compile(name: 'libtermexec-release', ext: 'aar')
-    compile(name: 'emulatorview-release', ext: 'aar')
-    compile(name: 'term-debug', ext: 'aar')
-    compile files('libs/rhino-1.7.7.2.jar')
-    compile project(path: ':common')
-    compile project(path: ':automator')
+    api(name: 'libtermexec-release', ext: 'aar')
+    api(name: 'emulatorview-release', ext: 'aar')
+    api(name: 'term-debug', ext: 'aar')
+    api files('libs/rhino-1.7.7.2.jar')
+    api project(path: ':common')
+    api project(path: ':automator')
 }
 
diff --git a/autojs/src/main/java/com/stardust/autojs/core/accessibility/UiSelector.java b/autojs/src/main/java/com/stardust/autojs/core/accessibility/UiSelector.java
index 3d999f94..fee7546b 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/accessibility/UiSelector.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/accessibility/UiSelector.java
@@ -15,6 +15,10 @@ import com.stardust.automator.UiObjectCollection;
 import com.stardust.automator.filter.DfsFilter;
 import com.stardust.view.accessibility.AccessibilityNodeInfoAllocator;
 
+import java.net.InetAddress;
+import java.net.ServerSocket;
+import java.net.Socket;
+
 import static android.support.v4.view.accessibility.AccessibilityNodeInfoCompat.ACTION_ACCESSIBILITY_FOCUS;
 import static android.support.v4.view.accessibility.AccessibilityNodeInfoCompat.ACTION_ARGUMENT_COLUMN_INT;
 import static android.support.v4.view.accessibility.AccessibilityNodeInfoCompat.ACTION_ARGUMENT_PROGRESS_VALUE;
@@ -98,6 +102,7 @@ public class UiSelector extends UiGlobalSelector {
         return regex;
     }
 
+
     @Override
     public UiGlobalSelector classNameMatches(String regex) {
         return super.classNameMatches(convertRegex(regex));
diff --git a/autojs/src/main/java/com/stardust/autojs/core/graphics/ScriptCanvas.java b/autojs/src/main/java/com/stardust/autojs/core/graphics/ScriptCanvas.java
index 69c1980c..f135315b 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/graphics/ScriptCanvas.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/graphics/ScriptCanvas.java
@@ -93,10 +93,6 @@ public class ScriptCanvas {
         return mCanvas.save();
     }
 
-    public int save(int saveFlags) {
-        return mCanvas.save(saveFlags);
-    }
-
     public int saveLayer(@Nullable RectF bounds, @Nullable Paint paint, int saveFlags) {
         return mCanvas.saveLayer(bounds, paint, saveFlags);
     }
diff --git a/autojs/src/main/java/com/stardust/autojs/engine/LoopBasedJavaScriptEngine.java b/autojs/src/main/java/com/stardust/autojs/engine/LoopBasedJavaScriptEngine.java
index c2b6243a..fed1877b 100644
--- a/autojs/src/main/java/com/stardust/autojs/engine/LoopBasedJavaScriptEngine.java
+++ b/autojs/src/main/java/com/stardust/autojs/engine/LoopBasedJavaScriptEngine.java
@@ -5,6 +5,7 @@ import android.content.Context;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.MessageQueue;
+import android.util.Log;
 
 import com.stardust.autojs.core.looper.LooperHelper;
 import com.stardust.autojs.script.JavaScriptSource;
@@ -44,6 +45,7 @@ public class LoopBasedJavaScriptEngine extends RhinoJavaScriptEngine {
                 if (callback != null)
                     callback.onResult(o);
             } catch (Exception e) {
+                Log.d("DDDDD", "execute: "  + e.getMessage());
                 if (callback == null) {
                     throw e;
                 } else {
diff --git a/autojs/src/main/java/com/stardust/autojs/engine/RhinoJavaScriptEngine.java b/autojs/src/main/java/com/stardust/autojs/engine/RhinoJavaScriptEngine.java
index 0b620be2..9f491a38 100644
--- a/autojs/src/main/java/com/stardust/autojs/engine/RhinoJavaScriptEngine.java
+++ b/autojs/src/main/java/com/stardust/autojs/engine/RhinoJavaScriptEngine.java
@@ -205,6 +205,7 @@ public class RhinoJavaScriptEngine extends JavaScriptEngine {
         @Override
         protected void observeInstructionCount(Context cx, int instructionCount) {
             if (Thread.currentThread().isInterrupted() && Looper.myLooper() != Looper.getMainLooper()) {
+                Log.d("DDDDD", "thread interrupt: "  + Thread.currentThread());
                 throw new ScriptInterruptedException();
             }
         }
diff --git a/automator/build.gradle b/automator/build.gradle
index 3ca16296..91363f60 100644
--- a/automator/build.gradle
+++ b/automator/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '26.0.2'
+    compileSdkVersion versions.compile
+    buildToolsVersion versions.buildTool
 
     defaultConfig {
-        minSdkVersion 17
-        targetSdkVersion 25
+        minSdkVersion versions.mini
+        targetSdkVersion versions.target
         versionCode 1
         versionName "1.0"
 
@@ -33,10 +33,10 @@ repositories {
 }
 
 dependencies {
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:25.4.0'
-    compile project(path: ':common')
+    testImplementation 'junit:junit:4.12'
+    api 'com.android.support:appcompat-v7:28.0.0'
+    api project(path: ':common')
 }
diff --git a/build.gradle b/build.gradle
index 87c3cfd6..98210af6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,11 +2,11 @@
 
 buildscript {
     repositories {
-        jcenter()
         google()
+        jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.1.4'
 
     }
 }
@@ -18,9 +18,19 @@ allprojects {
             url "https://jitpack.io"
         }
         google()
+        maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
     }
 }
 
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
+
+ext {
+    versions = [
+        target: 28,
+        mini: 17,
+        compile: 28,
+        buildTool: '28.0.3'
+    ]
+}
diff --git a/common/build.gradle b/common/build.gradle
index 00d806fb..445f3e62 100644
--- a/common/build.gradle
+++ b/common/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '26.0.2'
+    compileSdkVersion versions.compile
+    buildToolsVersion versions.buildTool
 
     defaultConfig {
-        minSdkVersion 17
-        targetSdkVersion 25
+        minSdkVersion versions.mini
+        targetSdkVersion versions.target
         versionCode 1
         versionName "1.0"
 
@@ -23,10 +23,10 @@ android {
 }
 
 dependencies {
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:support-annotations:25.4.0'
-    compile 'com.github.hyb1996:settingscompat:1.1.5'
+    testImplementation 'junit:junit:4.12'
+    api 'com.android.support:support-annotations:28.0.0'
+    api 'com.github.hyb1996:settingscompat:1.1.5'
 }
diff --git a/common/release/output.json b/common/release/output.json
index 25bb428d..053960b0 100644
--- a/common/release/output.json
+++ b/common/release/output.json
@@ -1 +1 @@
-[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":421},"path":"commonRelease-4.0.3 Alpha2.apk","properties":{"packageId":"org.autojs.autojs","split":"","minSdkVersion":"17"}}]
\ No newline at end of file
+[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":423},"path":"commonRelease-4.0.3 Alpha4.apk","properties":{"packageId":"org.autojs.autojs","split":"","minSdkVersion":"17"}}]
\ No newline at end of file
diff --git a/common/src/main/java/com/stardust/util/ObjectHelper.java b/common/src/main/java/com/stardust/util/ObjectHelper.java
new file mode 100644
index 00000000..090e6609
--- /dev/null
+++ b/common/src/main/java/com/stardust/util/ObjectHelper.java
@@ -0,0 +1,16 @@
+package com.stardust.util;
+
+public class ObjectHelper {
+
+    public static void requireNonNull(Object obj, String name){
+        if(obj == null){
+            throw new NullPointerException(name + " should not be null");
+        }
+    }
+
+    public static void requireNonNull(Object obj){
+        if(obj == null){
+            throw new NullPointerException();
+        }
+    }
+}
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 6fc53efd..2230d7d0 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Nov 27 21:40:02 CST 2017
+#Fri Oct 05 23:57:16 CST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip
diff --git a/inrt/build.gradle b/inrt/build.gradle
index 7cc9d151..a4f6d49f 100644
--- a/inrt/build.gradle
+++ b/inrt/build.gradle
@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '26.0.2'
+    compileSdkVersion versions.compile
+    buildToolsVersion versions.buildTool
 
     defaultConfig {
         applicationId "com.stardust.auojs.inrt"
-        minSdkVersion 17
-        targetSdkVersion 23
+        minSdkVersion versions.mini
+        targetSdkVersion versions.target
         versionCode 210
         versionName "4.0.2 Alpha5"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -44,17 +44,16 @@ repositories {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:25.4.0'
     //Glide
-    compile('com.github.bumptech.glide:glide:4.2.0', {
+    implementation('com.github.bumptech.glide:glide:4.2.0', {
         exclude group: 'com.android.support'
     })
-    testCompile 'junit:junit:4.12'
-    compile project(':automator')
-    compile project(':common')
-    compile project(':autojs')
+    testImplementation 'junit:junit:4.12'
+    implementation project(':automator')
+    implementation project(':common')
+    implementation project(':autojs')
 }