solana-mobile · Funkatronics · Jan 13, 2025 · Jan 13, 2025
diff --git a/android/fakewallet/build.gradle b/android/fakewallet/build.gradle
@@ -120,6 +120,7 @@ dependencies {
     implementation libs.bcprov.jdk18on
     implementation libs.kotlinx.coroutines.android
     implementation libs.multimult
+    implementation libs.zxing.android.embedded
     implementation project(path: ':walletlib')
     kapt libs.androidx.room.compiler
 }
diff --git a/android/fakewallet/src/main/AndroidManifest.xml b/android/fakewallet/src/main/AndroidManifest.xml
@@ -6,6 +6,10 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-feature
+        android:name="android.hardware.camera"
+        android:required="true" />
+    <uses-permission android:name="android.permission.CAMERA"/>
 
     <application
         android:name=".FakeWalletApplication"
@@ -26,6 +30,10 @@
             </intent-filter>
         </activity>
 
+        <activity android:name=".ui.scanqr.ScanQRActivity"
+            android:theme="@style/Theme.MaterialComponents.DayNight.NoActionBar"
+            android:exported="false"/>
+
         <activity
             android:name=".MobileWalletAdapterActivity"
             android:launchMode="singleTask"

diff --git a/android/fakewallet/src/main/java/com/solana/mobilewalletadapter/fakewallet/MainActivity.kt b/android/fakewallet/src/main/java/com/solana/mobilewalletadapter/fakewallet/MainActivity.kt
@@ -4,9 +4,11 @@
 
 package com.solana.mobilewalletadapter.fakewallet
 
-import androidx.appcompat.app.AppCompatActivity
+import android.content.Intent
 import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
 import com.solana.mobilewalletadapter.fakewallet.databinding.ActivityMainBinding
+import com.solana.mobilewalletadapter.fakewallet.ui.scanqr.ScanQRActivity
 
 class MainActivity : AppCompatActivity() {
     private lateinit var viewBinding: ActivityMainBinding
@@ -16,5 +18,9 @@ class MainActivity : AppCompatActivity() {
 
         viewBinding = ActivityMainBinding.inflate(layoutInflater)
         setContentView(viewBinding.root)
+
+        viewBinding.buttonStartRemote.setOnClickListener {
+            startActivity(Intent(applicationContext, ScanQRActivity::class.java))
+        }
     }
 }
diff --git a/...allet/src/main/java/com/solana/mobilewalletadapter/fakewallet/ui/scanqr/ScanQRActivity.kt b/...allet/src/main/java/com/solana/mobilewalletadapter/fakewallet/ui/scanqr/ScanQRActivity.kt
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2025 Solana Mobile Inc.
+ */
+
+package com.solana.mobilewalletadapter.fakewallet.ui.scanqr
+
+import android.content.Intent
+import android.net.Uri
+import android.os.Bundle
+import androidx.activity.enableEdgeToEdge
+import androidx.appcompat.app.AppCompatActivity
+import com.google.android.material.snackbar.Snackbar
+import com.journeyapps.barcodescanner.BarcodeView
+import com.solana.mobilewalletadapter.fakewallet.MobileWalletAdapterActivity
+import com.solana.mobilewalletadapter.fakewallet.R
+import com.solana.mobilewalletadapter.fakewallet.databinding.ActivityScanQrBinding
+import com.solana.mobilewalletadapter.walletlib.association.RemoteAssociationUri
+
+class ScanQRActivity : AppCompatActivity() {
+    private lateinit var viewBinding: ActivityScanQrBinding
+    private lateinit var barcodeView: BarcodeView
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        enableEdgeToEdge()
+        super.onCreate(savedInstanceState)
+
+        viewBinding = ActivityScanQrBinding.inflate(layoutInflater)
+        setContentView(viewBinding.root)
+
+        barcodeView = viewBinding.scannerViewFinder
+    }
+
+    override fun onResume() {
+        super.onResume()
+        barcodeView.resume()
+        decodeQRSingle()
+    }
+
+    public override fun onPause() {
+        super.onPause()
+        barcodeView.pauseAndWait()
+    }
+
+    private fun decodeQRSingle() {
+        barcodeView.decodeSingle { barcodeResult ->
+            println("Barcode Result = ${barcodeResult.text}")
+            runCatching {
+                val remoteAssociationUri = RemoteAssociationUri(Uri.parse(barcodeResult.text))
+                barcodeView.pause()
+
+                startActivity(
+                    Intent(applicationContext, MobileWalletAdapterActivity::class.java)
+                        .setData(remoteAssociationUri.uri))
+            }.getOrElse {
+                Snackbar.make(viewBinding.root, R.string.str_invalid_barcode, Snackbar.LENGTH_LONG).apply {
+                    setAction(R.string.label_try_again) { dismiss() }
+                    addCallback(object : Snackbar.Callback() {
+                        override fun onDismissed(transientBottomBar: Snackbar?, event: Int) {
+                            super.onDismissed(transientBottomBar, event)
+                            decodeQRSingle()
+                        }
+                    })
+                    show()
+                }
+            }
+        }
+    }
+}
diff --git a/android/fakewallet/src/main/res/drawable/drawable_view_finder_cutout.xml b/android/fakewallet/src/main/res/drawable/drawable_view_finder_cutout.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <vector
+            android:width="540dp"
+            android:height="1200dp"
+            android:viewportWidth="540"
+            android:viewportHeight="1200">
+            <path
+                android:fillColor="#99000000"
+                android:pathData="M 0 0 L 0 1200 L 540 1200 L 540 0 L 0 0 z M 118 253.71484 L 422 253.71484 C 448.592 253.71484 470 275.12284 470 301.71484 L 470 605.71484 C 470 632.30684 448.592 653.71484 422 653.71484 L 118 653.71484 C 91.408 653.71484 70 632.30684 70 605.71484 L 70 301.71484 C 70 275.12284 91.408 253.71484 118 253.71484 z" />
+        </vector>
+    </item>
+    <item>
+        <vector
+            android:width="372dp"
+            android:height="372dp"
+            android:viewportWidth="540"
+            android:viewportHeight="1200">
+            <path
+                android:strokeWidth="12"
+                android:strokeLineCap="round"
+                android:strokeColor="@android:color/white"
+                android:pathData="m 415.19999,255.71459 c 29.2512,0 52.8,23.5488 52.8,52.8 m 0,290.39999 c 0,29.25119 -23.5488,52.8 -52.8,52.8 m -290.39998,0 c -29.2512,0 -52.799999,-23.54881 -52.799999,-52.8 m 0,-290.39999 c 0,-29.2512 23.5488,-52.8 52.799999,-52.8" />
+        </vector>
+    </item>
+</layer-list>
diff --git a/android/fakewallet/src/main/res/layout/activity_main.xml b/android/fakewallet/src/main/res/layout/activity_main.xml
@@ -11,6 +11,7 @@
     tools:context=".MainActivity">
 
     <TextView
+        android:id="@+id/label_main"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@string/label_hello_world"
@@ -19,4 +20,14 @@
         app:layout_constraintRight_toRightOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <Button
+        android:id="@+id/button_start_remote"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/label_start_remote_connection"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/label_main" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/android/fakewallet/src/main/res/layout/activity_scan_qr.xml b/android/fakewallet/src/main/res/layout/activity_scan_qr.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) 2025 Solana Mobile Inc.
+  -->
+
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.scanqr.ScanQRActivity">
+
+    <com.journeyapps.barcodescanner.BarcodeView
+        android:id="@+id/scanner_view_finder"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/label_scanner_title"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
+    <View
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@drawable/drawable_view_finder_cutout"/>
+
+    <TextView
+        android:id="@+id/label_scanner_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="400dp"
+        android:gravity="center"
+        android:textColor="@color/white"
+        android:textAppearance="@style/TextAppearance.AppCompat.Headline"
+        android:text="@string/str_scan_mwa_qr_code"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/android/fakewallet/src/main/res/values/strings.xml b/android/fakewallet/src/main/res/values/strings.xml
@@ -7,6 +7,7 @@
 
     <!-- Main activity strings -->
     <string name="label_hello_world">I\'m a wallet!</string>
+    <string name="label_start_remote_connection">Start Remote Connection</string>
 
     <!-- Associate fragment strings -->
     <string name="label_session_active">Session active, awaiting requests from dApp…</string>
@@ -62,4 +63,9 @@
         work properly when the device battery save mode is active. Please turn off battery
         saver or plug in your phone and try again.
     </string>
+
+    <!-- Scan QR Code fragment strings -->
+    <string name="str_scan_mwa_qr_code">Scan MWA Connection QR Code</string>
+    <string name="str_invalid_barcode">Invalid QR Code</string>
+    <string name="label_try_again">Scan MWA Connection QR Code</string>
 </resources>
diff --git a/android/gradle/libs.versions.toml b/android/gradle/libs.versions.toml
@@ -34,6 +34,7 @@ nvWebsocketClient = "2.14"
 robolectric = "4.14.1"
 slf4jAndroid = "1.7.36"
 web3Core = "0.3.0-beta4"
+zxingAndroidEmbedded = "4.3.0"
 
 [libraries]
 androidx-activity-ktx = { module = "androidx.activity:activity-ktx", version.ref = "androidxActivityKtx" }
@@ -80,6 +81,7 @@ nv-websocket-client = { module = "com.neovisionaries:nv-websocket-client", versi
 robolectric = { module = "org.robolectric:robolectric", version.ref = "robolectric" }
 slf4j-android = { module = "org.slf4j:slf4j-android", version.ref = "slf4jAndroid" }
 web3-solana = { module = "com.solanamobile:web3-solana", version.ref = "web3Core" }
+zxing-android-embedded = { module = "com.journeyapps:zxing-android-embedded", version.ref = "zxingAndroidEmbedded" }
 
 [plugins]
 android-library = { id = "com.android.library", version.ref = "androidGradlePlugin" }