feat(android): file upload/download + in-app tab redesign

Companion WebView now supports file inputs and downloads, and apps
opened in the in-app tab get a proper loading splash and a footer
control bar matching the web app-session bar.

- onShowFileChooser wired to an ActivityResultLauncher so <input
  type=file> opens the system file browser (kiosk + in-app tab)
- DownloadListener: http(s) via DownloadManager (forwarding session
  cookies), blob: via JS->base64->MediaStore, data: decoded inline
- in-app tab: app-icon + progress loading splash (eager favicon
  fetch, upgraded via onReceivedIcon)
- footer controls (back/forward/refresh/open/close) matched to the
  web AppSession mobile bar, with the same SVG glyphs as drawables
- bump to 0.4.8 (versionCode 12)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Android/app/build.gradle.kts

@@ -11,8 +11,8 @@ android {
         applicationId = "com.archipelago.app"
         minSdk = 26
         targetSdk = 35
-        versionCode = 10
-        versionName = "0.4.6"
+        versionCode = 12
+        versionName = "0.4.8"
 
         vectorDrawables {
             useSupportLibrary = true

Android/app/src/main/java/com/archipelago/app/ui/screens/WebViewScreen.kt

@@ -1,16 +1,30 @@
 package com.archipelago.app.ui.screens
 
 import android.annotation.SuppressLint
+import android.app.DownloadManager
+import android.content.ContentValues
+import android.content.Context
+import android.content.Intent
 import android.graphics.Bitmap
+import android.net.Uri
+import android.os.Build
+import android.os.Environment
+import android.provider.MediaStore
+import android.util.Base64
 import android.view.ViewGroup
 import android.webkit.CookieManager
+import android.webkit.URLUtil
+import android.webkit.ValueCallback
 import android.webkit.WebChromeClient
 import android.webkit.WebResourceError
 import android.webkit.WebResourceRequest
 import android.webkit.WebSettings
 import android.webkit.WebView
 import android.webkit.WebViewClient
+import android.widget.Toast
 import androidx.activity.compose.BackHandler
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.fadeIn
 import androidx.compose.animation.fadeOut
@@ -28,10 +42,22 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.safeDrawing
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.windowInsetsPadding
+import android.graphics.BitmapFactory
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.navigationBars
+import androidx.compose.foundation.layout.statusBars
+import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.Close
 import androidx.compose.material.icons.filled.CloudOff
-import androidx.compose.material.icons.filled.OpenInBrowser
+import androidx.compose.material.icons.filled.Public
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.res.painterResource
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.LinearProgressIndicator
@@ -117,6 +143,159 @@ private fun WebView.applyArchipelagoSettings() {
     if (debuggable) WebView.setWebContentsDebuggingEnabled(true)
 }
 
+private fun mainHandler() = android.os.Handler(android.os.Looper.getMainLooper())
+
+private fun toast(context: Context, msg: String) {
+    mainHandler().post { Toast.makeText(context, msg, Toast.LENGTH_SHORT).show() }
+}
+
+/** Save raw bytes (decoded from a base64 blob/data download) to the device's
+ *  Downloads. Uses MediaStore on API 29+ (no permission needed) and the app's
+ *  external files dir on older devices (also permission-free). */
+private fun saveBase64ToDownloads(
+    context: Context,
+    base64: String,
+    mime: String,
+    filename: String,
+): Boolean {
+    return try {
+        val bytes = Base64.decode(base64, Base64.DEFAULT)
+        val name = filename.ifBlank { "download_${System.currentTimeMillis()}" }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            val values = ContentValues().apply {
+                put(MediaStore.Downloads.DISPLAY_NAME, name)
+                if (mime.isNotBlank()) put(MediaStore.Downloads.MIME_TYPE, mime)
+                put(MediaStore.Downloads.IS_PENDING, 1)
+            }
+            val resolver = context.contentResolver
+            val uri = resolver.insert(MediaStore.Downloads.EXTERNAL_CONTENT_URI, values)
+                ?: return false
+            resolver.openOutputStream(uri)?.use { it.write(bytes) } ?: return false
+            values.clear()
+            values.put(MediaStore.Downloads.IS_PENDING, 0)
+            resolver.update(uri, values, null, null)
+            true
+        } else {
+            val dir = context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS)
+            if (dir != null && !dir.exists()) dir.mkdirs()
+            java.io.File(dir, name).outputStream().use { it.write(bytes) }
+            true
+        }
+    } catch (_: Exception) {
+        false
+    }
+}
+
+/** Hand an http(s) download to the system DownloadManager, forwarding the
+ *  WebView's session cookies so authenticated node files (e.g. peer-file
+ *  streams) download instead of 401-ing. */
+private fun enqueueHttpDownload(
+    context: Context,
+    url: String,
+    userAgent: String?,
+    contentDisposition: String?,
+    mimeType: String?,
+) {
+    val name = URLUtil.guessFileName(url, contentDisposition, mimeType)
+    val request = DownloadManager.Request(Uri.parse(url)).apply {
+        setMimeType(mimeType)
+        CookieManager.getInstance().getCookie(url)?.let { addRequestHeader("Cookie", it) }
+        if (!userAgent.isNullOrEmpty()) addRequestHeader("User-Agent", userAgent)
+        setTitle(name)
+        setDescription("Downloading…")
+        setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, name)
+        } else {
+            setDestinationInExternalFilesDir(context, Environment.DIRECTORY_DOWNLOADS, name)
+        }
+    }
+    val dm = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
+    dm.enqueue(request)
+    toast(context, "Downloading $name")
+}
+
+/** JS that reads a blob: URL the WebView itself created (DownloadManager can't
+ *  fetch blob URLs) and hands the bytes back via the ArchipelagoDownload bridge. */
+private fun blobToBase64Js(blobUrl: String, mime: String, filename: String): String = """
+    (function() {
+      try {
+        var xhr = new XMLHttpRequest();
+        xhr.open('GET', '$blobUrl', true);
+        xhr.responseType = 'blob';
+        xhr.onload = function() {
+          var reader = new FileReader();
+          reader.onloadend = function() {
+            var dataUrl = reader.result || '';
+            var base64 = dataUrl.indexOf(',') >= 0 ? dataUrl.split(',')[1] : '';
+            var type = (xhr.response && xhr.response.type) ? xhr.response.type : '$mime';
+            ArchipelagoDownload.saveBase64(base64, type, '$filename');
+          };
+          reader.readAsDataURL(xhr.response);
+        };
+        xhr.send();
+      } catch (e) {}
+    })();
+""".trimIndent()
+
+/** Enable file downloads for this WebView: a JS bridge for blob/data URLs plus a
+ *  DownloadListener that routes http(s) through DownloadManager and blob/data
+ *  through MediaStore. Safe to call once per WebView. */
+@SuppressLint("JavascriptInterface")
+private fun WebView.enableFileDownloads(context: Context) {
+    addJavascriptInterface(
+        object {
+            @android.webkit.JavascriptInterface
+            fun saveBase64(base64: String, mime: String, filename: String) {
+                val ok = saveBase64ToDownloads(context, base64, mime, filename)
+                toast(context, if (ok) "Saved $filename to Downloads" else "Save failed")
+            }
+        },
+        "ArchipelagoDownload",
+    )
+    setDownloadListener { url, userAgent, contentDisposition, mimeType, _ ->
+        try {
+            when {
+                url.startsWith("blob:") -> {
+                    val name = URLUtil.guessFileName(url, contentDisposition, mimeType)
+                    evaluateJavascript(blobToBase64Js(url, mimeType ?: "", name), null)
+                }
+                url.startsWith("data:") -> {
+                    val name = URLUtil.guessFileName(url, contentDisposition, mimeType)
+                    val comma = url.indexOf(',')
+                    val b64 = if (comma >= 0) url.substring(comma + 1) else ""
+                    val ok = saveBase64ToDownloads(context, b64, mimeType ?: "", name)
+                    toast(context, if (ok) "Saved $name to Downloads" else "Save failed")
+                }
+                else -> enqueueHttpDownload(context, url, userAgent, contentDisposition, mimeType)
+            }
+        } catch (_: Exception) {
+            toast(context, "Download failed")
+        }
+    }
+}
+
+/** Best-effort fetch of the origin's /favicon.ico, so the launched app's icon
+ *  can be shown on the loading splash before the WebView reports onReceivedIcon
+ *  (which only fires once the page's <head> has parsed). Blocking — call on IO. */
+private fun fetchFavicon(pageUrl: String): Bitmap? {
+    return try {
+        val u = Uri.parse(pageUrl)
+        val scheme = u.scheme ?: return null
+        val host = u.host ?: return null
+        val portPart = if (u.port > 0) ":${u.port}" else ""
+        val conn = (java.net.URL("$scheme://$host$portPart/favicon.ico").openConnection()
+            as java.net.HttpURLConnection).apply {
+            connectTimeout = 4000
+            readTimeout = 4000
+            instanceFollowRedirects = true
+        }
+        conn.inputStream.use { BitmapFactory.decodeStream(it) }
+    } catch (_: Exception) {
+        null
+    }
+}
+
 @SuppressLint("SetJavaScriptEnabled", "ClickableViewAccessibility")
 @Composable
 fun WebViewScreen(
@@ -129,6 +308,37 @@ fun WebViewScreen(
     var hasError by remember { mutableStateOf(false) }
     var webView by remember { mutableStateOf<WebView?>(null) }
 
+    // System file-picker plumbing for <input type="file">. onShowFileChooser
+    // stashes the WebView's callback here; the launcher result delivers the
+    // picked URIs back to it (or null on cancel, so the input doesn't hang).
+    val pendingFileCallback = remember { mutableStateOf<ValueCallback<Array<Uri>>?>(null) }
+    val fileChooserLauncher = rememberLauncherForActivityResult(
+        ActivityResultContracts.StartActivityForResult(),
+    ) { result ->
+        val cb = pendingFileCallback.value
+        pendingFileCallback.value = null
+        cb?.onReceiveValue(
+            WebChromeClient.FileChooserParams.parseResult(result.resultCode, result.data),
+        )
+    }
+    val showFileChooser: (ValueCallback<Array<Uri>>?, WebChromeClient.FileChooserParams?) -> Boolean =
+        { callback, params ->
+            pendingFileCallback.value?.onReceiveValue(null)
+            pendingFileCallback.value = callback
+            try {
+                val intent = params?.createIntent()
+                    ?: Intent(Intent.ACTION_GET_CONTENT).apply {
+                        type = "*/*"
+                        addCategory(Intent.CATEGORY_OPENABLE)
+                    }
+                fileChooserLauncher.launch(intent)
+                true
+            } catch (_: Exception) {
+                pendingFileCallback.value = null
+                false
+            }
+        }
+
     // A node app that refused iframing, opened in a local WebView overlay.
     // null = no overlay. The kiosk WebView underneath stays alive (and warm)
     // while this is shown, so closing it returns instantly with no reload.
@@ -217,6 +427,7 @@ fun WebViewScreen(
                         cookieManager.setAcceptThirdPartyCookies(this, true)
 
                         applyArchipelagoSettings()
+                        enableFileDownloads(context)
                         settings.apply {
                             setSupportMultipleWindows(true)  // enables onCreateWindow for window.open
                             // Let JS open windows without a synchronous user-gesture
@@ -328,6 +539,13 @@ fun WebViewScreen(
                                 loadProgress = newProgress
                             }
 
+                            // Open the system file browser for <input type="file">.
+                            override fun onShowFileChooser(
+                                webView: WebView?,
+                                filePathCallback: ValueCallback<Array<Uri>>?,
+                                fileChooserParams: FileChooserParams?,
+                            ): Boolean = showFileChooser(filePathCallback, fileChooserParams)
+
                             // window.open() — e.g. the kiosk's "Open in new tab"
                             // for an app that can't be iframed. Capture the target
                             // URL via a throwaway WebView and route it ourselves.
@@ -422,17 +640,33 @@ fun WebViewScreen(
                     url = target,
                     serverUrl = serverUrl,
                     onClose = { inAppUrl = null },
+                    onShowFileChooser = showFileChooser,
                 )
             }
         }
     }
 }
 
+/** One control in the in-app browser's bottom bar — sized and styled to match
+ *  the web app-session mobile bar (52dp tap target, 24dp glyph, muted white). */
+@Composable
+private fun FooterButton(iconRes: Int, descRes: Int, onClick: () -> Unit) {
+    IconButton(onClick = onClick, modifier = Modifier.size(52.dp)) {
+        Icon(
+            painter = painterResource(iconRes),
+            contentDescription = stringResource(descRes),
+            tint = Color.White.copy(alpha = 0.72f),
+            modifier = Modifier.size(24.dp),
+        )
+    }
+}
+
 /**
  * Lightweight in-app browser used when the kiosk hands off an app that can't be
- * shown in an iframe. Loads the app in a local WebView with a minimal top bar
- * (close + title + escalate-to-real-browser). Same-host navigation stays here;
- * any genuinely external link escapes to the phone's browser.
+ * shown in an iframe. Loads the app in a local WebView with a loading splash
+ * (app icon + progress) and a bottom control bar matching the web app-session
+ * mobile bar. Same-host navigation stays here; any genuinely external link
+ * escapes to the phone's browser.
  */
 @SuppressLint("SetJavaScriptEnabled")
 @Composable
@@ -440,12 +674,22 @@ private fun InAppBrowser(
     url: String,
     serverUrl: String,
     onClose: () -> Unit,
+    onShowFileChooser: (ValueCallback<Array<Uri>>?, WebChromeClient.FileChooserParams?) -> Boolean,
 ) {
     val context = LocalContext.current
     var browser by remember { mutableStateOf<WebView?>(null) }
     var title by remember { mutableStateOf(android.net.Uri.parse(url).host ?: url) }
     var progress by remember { mutableIntStateOf(0) }
     var loading by remember { mutableStateOf(true) }
+    // The launched app's icon, shown on the loading splash. Seeded by a
+    // best-effort favicon fetch, then upgraded to the real icon once the
+    // WebView reports onReceivedIcon.
+    var appIcon by remember { mutableStateOf<Bitmap?>(null) }
+
+    LaunchedEffect(url) {
+        val fetched = withContext(Dispatchers.IO) { fetchFavicon(url) }
+        if (fetched != null && appIcon == null) appIcon = fetched
+    }
 
     // Back: walk the in-app history first, then close the overlay.
     BackHandler {
@@ -456,99 +700,166 @@ private fun InAppBrowser(
     Column(
         modifier = Modifier
             .fillMaxSize()
-            .background(SurfaceBlack)
-            .windowInsetsPadding(WindowInsets.safeDrawing),
+            .background(SurfaceBlack),
     ) {
-        Row(
+        // Content area: the app WebView, with a thin progress-bar loader pinned
+        // to the top edge while the page loads.
+        Box(
+            modifier = Modifier
+                .weight(1f)
+                .fillMaxWidth()
+                .windowInsetsPadding(WindowInsets.statusBars),
+        ) {
+            AndroidView(
+                modifier = Modifier.fillMaxSize(),
+                factory = { ctx ->
+                    WebView(ctx).apply {
+                        layoutParams = ViewGroup.LayoutParams(
+                            ViewGroup.LayoutParams.MATCH_PARENT,
+                            ViewGroup.LayoutParams.MATCH_PARENT,
+                        )
+                        isVerticalScrollBarEnabled = false
+                        isHorizontalScrollBarEnabled = false
+
+                        CookieManager.getInstance().setAcceptThirdPartyCookies(this, true)
+                        applyArchipelagoSettings()
+                        enableFileDownloads(ctx)
+
+                        webChromeClient = object : WebChromeClient() {
+                            override fun onProgressChanged(view: WebView?, newProgress: Int) {
+                                progress = newProgress
+                            }
+
+                            override fun onReceivedTitle(view: WebView?, t: String?) {
+                                if (!t.isNullOrBlank()) title = t
+                            }
+
+                            override fun onReceivedIcon(view: WebView?, icon: Bitmap?) {
+                                if (icon != null) appIcon = icon
+                            }
+
+                            override fun onShowFileChooser(
+                                webView: WebView?,
+                                filePathCallback: ValueCallback<Array<Uri>>?,
+                                fileChooserParams: FileChooserParams?,
+                            ): Boolean = onShowFileChooser(filePathCallback, fileChooserParams)
+                        }
+
+                        webViewClient = object : WebViewClient() {
+                            override fun onPageStarted(view: WebView?, u: String?, favicon: Bitmap?) {
+                                loading = true
+                                if (favicon != null) appIcon = favicon
+                            }
+
+                            override fun onPageFinished(view: WebView?, u: String?) {
+                                loading = false
+                            }
+
+                            override fun shouldOverrideUrlLoading(
+                                view: WebView?,
+                                request: WebResourceRequest?,
+                            ): Boolean {
+                                val u = request?.url?.toString() ?: return false
+                                // Stay in the overlay for same-node navigation;
+                                // hand genuinely external links to the real browser.
+                                if (isSameHost(u, serverUrl)) return false
+                                openExternalUrl(ctx, u)
+                                return true
+                            }
+                        }
+
+                        browser = this
+                        loadUrl(url)
+                    }
+                },
+            )
+
+            // Loading splash — app icon + progress bar, covering the white
+            // first-paint flash until the app's own UI is ready.
+            if (loading) {
+                Column(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .background(SurfaceBlack)
+                        .padding(32.dp),
+                    horizontalAlignment = Alignment.CenterHorizontally,
+                    verticalArrangement = Arrangement.Center,
+                ) {
+                    val icon = appIcon
+                    if (icon != null) {
+                        Image(
+                            bitmap = icon.asImageBitmap(),
+                            contentDescription = null,
+                            modifier = Modifier
+                                .size(64.dp)
+                                .clip(RoundedCornerShape(14.dp)),
+                        )
+                    } else {
+                        Icon(
+                            imageVector = Icons.Default.Public,
+                            contentDescription = null,
+                            tint = TextMuted,
+                            modifier = Modifier.size(64.dp),
+                        )
+                    }
+                    Spacer(modifier = Modifier.height(20.dp))
+                    Text(
+                        text = title,
+                        style = MaterialTheme.typography.titleMedium,
+                        color = TextPrimary,
+                        maxLines = 1,
+                        overflow = TextOverflow.Ellipsis,
+                    )
+                    Spacer(modifier = Modifier.height(20.dp))
+                    LinearProgressIndicator(
+                        progress = { progress / 100f },
+                        modifier = Modifier.fillMaxWidth(0.55f),
+                        color = BitcoinOrange,
+                        trackColor = SurfaceBlack,
+                    )
+                }
+            }
+        }
+
+        // Mobile footer controls — matched to the web app-session bar: five
+        // evenly-spaced buttons over a translucent dark bar with a hairline top
+        // border, sitting above the system navigation bar.
+        Column(
             modifier = Modifier
                 .fillMaxWidth()
-                .height(48.dp)
-                .padding(horizontal = 4.dp),
-            verticalAlignment = Alignment.CenterVertically,
+                .background(Color(0xF2141414)),
         ) {
-            IconButton(onClick = onClose) {
-                Icon(
-                    imageVector = Icons.Default.Close,
-                    contentDescription = stringResource(R.string.close),
-                    tint = TextPrimary,
-                )
-            }
-            Text(
-                text = title,
-                style = MaterialTheme.typography.bodyMedium,
-                color = TextPrimary,
-                maxLines = 1,
-                overflow = TextOverflow.Ellipsis,
-                modifier = Modifier.weight(1f),
+            Box(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .height(1.dp)
+                    .background(Color(0x14FFFFFF)),
             )
-            IconButton(onClick = { openExternalUrl(context, browser?.url ?: url) }) {
-                Icon(
-                    imageVector = Icons.Default.OpenInBrowser,
-                    contentDescription = stringResource(R.string.open_in_browser),
-                    tint = TextMuted,
-                )
-            }
-        }
-
-        AnimatedVisibility(visible = loading, enter = fadeIn(), exit = fadeOut()) {
-            LinearProgressIndicator(
-                progress = { progress / 100f },
-                modifier = Modifier.fillMaxWidth(),
-                color = BitcoinOrange,
-                trackColor = SurfaceBlack,
-            )
-        }
-
-        AndroidView(
-            modifier = Modifier.fillMaxSize(),
-            factory = { ctx ->
-                WebView(ctx).apply {
-                    layoutParams = ViewGroup.LayoutParams(
-                        ViewGroup.LayoutParams.MATCH_PARENT,
-                        ViewGroup.LayoutParams.MATCH_PARENT,
-                    )
-                    isVerticalScrollBarEnabled = false
-                    isHorizontalScrollBarEnabled = false
-
-                    CookieManager.getInstance().setAcceptThirdPartyCookies(this, true)
-                    applyArchipelagoSettings()
-
-                    webChromeClient = object : WebChromeClient() {
-                        override fun onProgressChanged(view: WebView?, newProgress: Int) {
-                            progress = newProgress
-                        }
-
-                        override fun onReceivedTitle(view: WebView?, t: String?) {
-                            if (!t.isNullOrBlank()) title = t
-                        }
-                    }
-
-                    webViewClient = object : WebViewClient() {
-                        override fun onPageStarted(view: WebView?, u: String?, favicon: Bitmap?) {
-                            loading = true
-                        }
-
-                        override fun onPageFinished(view: WebView?, u: String?) {
-                            loading = false
-                        }
-
-                        override fun shouldOverrideUrlLoading(
-                            view: WebView?,
-                            request: WebResourceRequest?,
-                        ): Boolean {
-                            val u = request?.url?.toString() ?: return false
-                            // Stay in the overlay for same-node navigation;
-                            // hand genuinely external links to the real browser.
-                            if (isSameHost(u, serverUrl)) return false
-                            openExternalUrl(ctx, u)
-                            return true
-                        }
-                    }
-
-                    browser = this
-                    loadUrl(url)
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .windowInsetsPadding(WindowInsets.navigationBars)
+                    .heightIn(min = 64.dp)
+                    .padding(vertical = 6.dp, horizontal = 8.dp),
+                horizontalArrangement = Arrangement.SpaceAround,
+                verticalAlignment = Alignment.CenterVertically,
+            ) {
+                FooterButton(R.drawable.ic_nav_back, R.string.back) {
+                    browser?.let { if (it.canGoBack()) it.goBack() }
                 }
-            },
-        )
+                FooterButton(R.drawable.ic_nav_forward, R.string.forward) {
+                    browser?.let { if (it.canGoForward()) it.goForward() }
+                }
+                FooterButton(R.drawable.ic_nav_refresh, R.string.refresh) {
+                    browser?.reload()
+                }
+                FooterButton(R.drawable.ic_nav_newtab, R.string.open_in_browser) {
+                    openExternalUrl(context, browser?.url ?: url)
+                }
+                FooterButton(R.drawable.ic_nav_close, R.string.close) {
+                    onClose()
+                }
+            }
+        }
     }
 }

Android/app/src/main/res/drawable/ic_nav_back.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:pathData="M15,19l-7,-7 7,-7"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="2"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round" />
+</vector>

Android/app/src/main/res/drawable/ic_nav_close.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:pathData="M6,18L18,6M6,6l12,12"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="2"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round" />
+</vector>

Android/app/src/main/res/drawable/ic_nav_forward.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:pathData="M9,5l7,7 -7,7"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="2"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round" />
+</vector>

Android/app/src/main/res/drawable/ic_nav_newtab.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:pathData="M10,6H6a2,2 0,0 0,-2 2v10a2,2 0,0 0,2 2h10a2,2 0,0 0,2 -2v-4M14,4h6m0,0v6m0,-6L10,14"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="2"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round" />
+</vector>

Android/app/src/main/res/drawable/ic_nav_refresh.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:pathData="M4,4v6h6M20,20v-6h-6M5.64,15.36A8,8 0,0 0,18.36 18M18.36,8.64A8,8 0,0 0,5.64 6"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="2"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round" />
+</vector>

Android/app/src/main/res/values/strings.xml

@@ -23,6 +23,9 @@
     <string name="remote_input_hint">Use your phone as a keyboard and mouse for the kiosk</string>
     <string name="close">Close</string>
     <string name="open_in_browser">Open in browser</string>
+    <string name="back">Back</string>
+    <string name="forward">Forward</string>
+    <string name="refresh">Refresh</string>
     <string name="server_name_label">Server Name (optional)</string>
     <string name="server_name_placeholder">My Archipelago</string>
 </resources>