diff --git a/android/build.gradle b/android/build.gradle
index 2e5014a..7b081c3 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -8,7 +8,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.1'
+        classpath 'com.android.tools.build:gradle:4.2.2'
     }
 }
 
@@ -26,7 +26,6 @@ android {
 
     defaultConfig {
         minSdkVersion 16
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     lintOptions {
         disable 'InvalidPackage'
diff --git a/android/src/main/java/com/kaivean/system_proxy/SystemProxyPlugin.java b/android/src/main/java/com/kaivean/system_proxy/SystemProxyPlugin.java
index ff6606a..ef68f25 100644
--- a/android/src/main/java/com/kaivean/system_proxy/SystemProxyPlugin.java
+++ b/android/src/main/java/com/kaivean/system_proxy/SystemProxyPlugin.java
@@ -1,49 +1,35 @@
 package com.kaivean.system_proxy;
 
+import io.flutter.embedding.engine.plugins.FlutterPlugin;
 import io.flutter.plugin.common.MethodCall;
 import io.flutter.plugin.common.MethodChannel;
 import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
 import io.flutter.plugin.common.MethodChannel.Result;
-import io.flutter.plugin.common.PluginRegistry.Registrar;
 
 import java.util.HashMap;
 import java.util.Map;
 import android.net.ProxyInfo;
 
 import android.net.ConnectivityManager;
-import android.net.Network;
-import android.net.NetworkCapabilities;
-import android.net.NetworkInfo;
-import android.net.wifi.WifiInfo;
-import android.net.wifi.WifiManager;
 import android.os.Build;
 import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
+
+import androidx.annotation.NonNull;
 
 /** SystemProxyPlugin */
-public class SystemProxyPlugin implements MethodCallHandler {
-  private final Registrar registrar;
-  private final ConnectivityManager manager;
+public class SystemProxyPlugin implements FlutterPlugin, MethodCallHandler {
+  private ConnectivityManager manager;
+  private MethodChannel channel;
 
-  /** Plugin registration. */
-  public static void registerWith(Registrar registrar) {
-    final MethodChannel channel = new MethodChannel(registrar.messenger(), "system_proxy");
-    channel.setMethodCallHandler(new SystemProxyPlugin(registrar));
-  }
-
-  private SystemProxyPlugin(Registrar registrar) {
-    this.registrar = registrar;
-    this.manager =
-            (ConnectivityManager)
-                    registrar
-                            .context()
-                            .getApplicationContext()
-                            .getSystemService(Context.CONNECTIVITY_SERVICE);
+  @Override
+  public void onAttachedToEngine(@NonNull FlutterPluginBinding flutterPluginBinding) {
+    channel = new MethodChannel(flutterPluginBinding.getBinaryMessenger(), "system_proxy");
+    channel.setMethodCallHandler(this);
+    manager = (ConnectivityManager)flutterPluginBinding.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
   }
 
   @Override
-  public void onMethodCall(MethodCall call, Result result) {
+  public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {
     if (call.method.equals("getProxySettings")) {
       getNetworkType(manager, result);
     } else {
@@ -51,6 +37,11 @@ public class SystemProxyPlugin implements MethodCallHandler {
     }
   }
 
+  @Override
+  public void onDetachedFromEngine(@NonNull FlutterPluginBinding binding) {
+    channel.setMethodCallHandler(null);
+  }
+
   private void getNetworkType(ConnectivityManager manager,  Result result) {
     if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
       ProxyInfo defaultProxy = manager.getDefaultProxy();
diff --git a/example/android/app/build.gradle b/example/android/app/build.gradle
index 33a0bff..515858d 100644
--- a/example/android/app/build.gradle
+++ b/example/android/app/build.gradle
@@ -38,7 +38,6 @@ android {
         targetSdkVersion 28
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
 
     buildTypes {
@@ -53,9 +52,3 @@ android {
 flutter {
     source '../..'
 }
-
-dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
-}
diff --git a/example/android/app/src/main/AndroidManifest.xml b/example/android/app/src/main/AndroidManifest.xml
index 1033166..253910d 100644
--- a/example/android/app/src/main/AndroidManifest.xml
+++ b/example/android/app/src/main/AndroidManifest.xml
@@ -1,33 +1,41 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.kaivean.system_proxy_example">
-
-    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
-         calls FlutterMain.startInitialization(this); in its onCreate method.
-         In most cases you can leave this as-is, but you if you want to provide
-         additional functionality it is fine to subclass or reimplement
-         FlutterApplication and put your custom class here. -->
     <application
-        android:name="io.flutter.app.FlutterApplication"
         android:label="system_proxy_example"
         android:icon="@mipmap/ic_launcher">
         <activity
             android:name=".MainActivity"
             android:launchMode="singleTop"
             android:theme="@style/LaunchTheme"
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
             android:windowSoftInputMode="adjustResize">
-            <!-- This keeps the window background of the activity showing
-                 until Flutter renders its first frame. It can be removed if
-                 there is no splash screen (such as the default splash screen
-                 defined in @style/LaunchTheme). -->
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
             <meta-data
-                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
-                android:value="true" />
+                android:name="io.flutter.embedding.android.NormalTheme"
+                android:resource="@style/NormalTheme"
+                />
+            <!-- Displays an Android View that continues showing the launch screen
+                 Drawable until Flutter paints its first frame, then this splash
+                 screen fades out. A splash screen is useful to avoid any visual
+                 gap between the end of Android's launch screen and the painting of
+                 Flutter's first frame. -->
+            <meta-data
+                android:name="io.flutter.embedding.android.SplashScreenDrawable"
+                android:resource="@drawable/launch_background"
+                />
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
     </application>
 </manifest>
diff --git a/example/android/app/src/main/java/com/kaivean/system_proxy_example/MainActivity.java b/example/android/app/src/main/java/com/kaivean/system_proxy_example/MainActivity.java
index 266e667..c071d64 100644
--- a/example/android/app/src/main/java/com/kaivean/system_proxy_example/MainActivity.java
+++ b/example/android/app/src/main/java/com/kaivean/system_proxy_example/MainActivity.java
@@ -1,13 +1,5 @@
 package com.kaivean.system_proxy_example;
 
-import android.os.Bundle;
-import io.flutter.app.FlutterActivity;
-import io.flutter.plugins.GeneratedPluginRegistrant;
+import io.flutter.embedding.android.FlutterActivity;
 
-public class MainActivity extends FlutterActivity {
-  @Override
-  protected void onCreate(Bundle savedInstanceState) {
-    super.onCreate(savedInstanceState);
-    GeneratedPluginRegistrant.registerWith(this);
-  }
-}
+public class MainActivity extends FlutterActivity { }
\ No newline at end of file
diff --git a/example/android/app/src/main/res/values/styles.xml b/example/android/app/src/main/res/values/styles.xml
index 00fa441..2fab5b3 100644
--- a/example/android/app/src/main/res/values/styles.xml
+++ b/example/android/app/src/main/res/values/styles.xml
@@ -1,8 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
         <!-- Show a splash screen on the activity. Automatically removed when
              Flutter draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
     </style>
-</resources>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>
\ No newline at end of file
diff --git a/example/android/build.gradle b/example/android/build.gradle
index bb8a303..f5f2ffb 100644
--- a/example/android/build.gradle
+++ b/example/android/build.gradle
@@ -5,7 +5,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.1'
+        classpath 'com.android.tools.build:gradle:4.2.2'
     }
 }
 
@@ -19,8 +19,6 @@ allprojects {
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/example/android/gradle.properties b/example/android/gradle.properties
index 2bd6f4f..4d3226a 100644
--- a/example/android/gradle.properties
+++ b/example/android/gradle.properties
@@ -1,2 +1,3 @@
 org.gradle.jvmargs=-Xmx1536M
-
+android.useAndroidX=true
+android.enableJetifier=true
\ No newline at end of file
diff --git a/example/android/gradle/wrapper/gradle-wrapper.properties b/example/android/gradle/wrapper/gradle-wrapper.properties
index 2819f02..8b795a6 100644
--- a/example/android/gradle/wrapper/gradle-wrapper.properties
+++ b/example/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-all.zip
\ No newline at end of file
diff --git a/example/pubspec.lock b/example/pubspec.lock
index c8455e2..cb6f175 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -7,7 +7,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.5.0"
+    version: "2.6.1"
   boolean_selector:
     dependency: transitive
     description:
@@ -99,7 +99,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0"
+    version: "1.8.1"
   stack_trace:
     dependency: transitive
     description:
@@ -127,7 +127,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.0.1"
+    version: "0.0.2"
   term_glyph:
     dependency: transitive
     description:
@@ -141,7 +141,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.19"
+    version: "0.3.0"
   typed_data:
     dependency: transitive
     description: