diff --git a/android/app/build.gradle b/android/app/build.gradle
new file mode 100644
index 00000000..59bdbd64
--- /dev/null
+++ b/android/app/build.gradle
@@ -0,0 +1,46 @@
+plugins {
+ id 'com.android.application'
+ id 'kotlin-android'
+}
+
+android {
+ compileSdkVersion 30
+ buildToolsVersion "30.0.3"
+
+ defaultConfig {
+ applicationId "com.trust.web3.demo"
+ minSdkVersion 21
+ targetSdkVersion 30
+ versionCode 1
+ versionName "1.0"
+
+ testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+ }
+
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+ }
+ }
+ compileOptions {
+ sourceCompatibility JavaVersion.VERSION_1_8
+ targetCompatibility JavaVersion.VERSION_1_8
+ }
+ kotlinOptions {
+ jvmTarget = '1.8'
+ }
+}
+
+dependencies {
+
+ implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+ implementation 'androidx.core:core-ktx:1.2.0'
+ implementation 'androidx.appcompat:appcompat:1.2.0'
+ implementation 'com.google.android.material:material:1.1.0'
+ implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+ implementation project(path: ':lib')
+ testImplementation 'junit:junit:4.+'
+ androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+ androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+}
\ No newline at end of file
diff --git a/android/app/proguard-rules.pro b/android/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/android/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..837b9dcb
--- /dev/null
+++ b/android/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/android/app/src/main/java/com/trust/web3/demo/MainActivity.kt b/android/app/src/main/java/com/trust/web3/demo/MainActivity.kt
new file mode 100644
index 00000000..6045b06c
--- /dev/null
+++ b/android/app/src/main/java/com/trust/web3/demo/MainActivity.kt
@@ -0,0 +1,57 @@
+package com.trust.web3.demo
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.webkit.WebView
+import android.webkit.WebViewClient
+
+class MainActivity : AppCompatActivity() {
+ override fun onCreate(savedInstanceState: Bundle?) {
+ super.onCreate(savedInstanceState)
+ setContentView(R.layout.activity_main)
+
+ val provderJs = loadProviderJs()
+ val initJs = loadInitJs(
+ 1,
+ "https://mainnet.infura.io/v3/6e822818ec644335be6f0ed231f48310"
+ )
+ println("file lenght: ${provderJs.length}")
+ WebView.setWebContentsDebuggingEnabled(true)
+ val webview: WebView = findViewById(R.id.webview)
+ webview.settings.javaScriptEnabled = true
+ webview.addJavascriptInterface(WebAppInterface(webview), "_tw_")
+
+ val webViewClient = object : WebViewClient() {
+ override fun onPageFinished(view: WebView?, url: String?) {
+ super.onPageFinished(view, url)
+ println("loaded: ${url}")
+ view?.evaluateJavascript(provderJs, null)
+ view?.evaluateJavascript(initJs, null)
+ }
+ }
+ webview.webViewClient = webViewClient
+ webview.loadUrl("https://js-eth-sign.surge.sh")
+ }
+
+ fun loadProviderJs(): String {
+ return resources.openRawResource(R.raw.trust).bufferedReader().use { it.readText() }
+ }
+
+ fun loadInitJs(chainId: Int, rpcUrl: String): String {
+ val source = """
+ (function() {
+ var config = {
+ chainId: $chainId,
+ rpcUrl: "$rpcUrl",
+ isDebug: true
+ };
+ window.ethereum = new trustwallet.Provider(config);
+ window.web3 = new trustwallet.Web3(window.ethereum);
+ trustwallet.postMessage = (json) => {
+ window._tw_.postMessage(JSON.stringify(json));
+ }
+ })();
+ """
+ return source
+ }
+}
\ No newline at end of file
diff --git a/android/app/src/main/java/com/trust/web3/demo/WebAppInterface.kt b/android/app/src/main/java/com/trust/web3/demo/WebAppInterface.kt
new file mode 100644
index 00000000..84c2a859
--- /dev/null
+++ b/android/app/src/main/java/com/trust/web3/demo/WebAppInterface.kt
@@ -0,0 +1,30 @@
+package com.trust.web3.demo
+
+import android.content.Context
+import android.webkit.JavascriptInterface
+import android.webkit.WebView
+import android.widget.Toast
+import org.json.JSONObject
+
+class WebAppInterface(private val context: WebView) {
+ @JavascriptInterface
+ fun postMessage(json: String) {
+ val obj = JSONObject(json)
+ println(obj)
+ val id = obj["id"]
+ val addr = "0x7d8bf18C7cE84b3E175b339c4Ca93aEd1dD166F1"
+
+ when(obj["name"]) {
+ "requestAccounts" -> {
+ val callback = "window.ethereum.sendResponse($id, [\"$addr\"])"
+ context.post {
+ context.evaluateJavascript(callback) { value ->
+ println(value)
+ }
+ }
+ }
+ // handle other methods here
+ // signTransaction, signMessage, ecRecover, watchAsset, addEthereumChain
+ }
+ }
+}
diff --git a/android/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/android/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/android/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+
+
+
+
+