feat(android): add zoom slider

fix(android): gray screen bug

apps/tauri/src-tauri/gen/android/app/build.gradle.kts

@@ -1,3 +1,4 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 import java.util.Properties
 import java.io.FileInputStream
 
@@ -61,14 +62,17 @@ android {
             )
         }
     }
-    kotlinOptions {
-        jvmTarget = "1.8"
-    }
     buildFeatures {
         buildConfig = true
     }
 }
 
+kotlin {
+    compilerOptions {
+        jvmTarget = JvmTarget.JVM_1_8
+    }
+}
+
 rust {
     rootDirRel = "../../../"
 }

apps/tauri/src-tauri/gen/android/app/src/main/java/net/tensamin/client/MainActivity.kt

@@ -3,10 +3,8 @@ package net.tensamin.client
 import android.Manifest
 import android.app.Activity
 import android.content.pm.PackageManager
-import android.graphics.Rect
 import android.media.projection.MediaProjectionManager
 import android.os.Bundle
-import android.view.ViewGroup
 import android.view.ViewTreeObserver
 import android.view.WindowManager
 import android.webkit.JavascriptInterface
@@ -56,7 +54,7 @@ class MainActivity : TauriActivity() {
   }
 
   override fun onWebViewCreate(webView: WebView) {
-    webView.setInitialScale(290)
+    NativeAccessibilityBridge.attach(webView)
     mediaWebView = webView
     MobileMediaEvents.attach(webView)
     webView.addJavascriptInterface(MobileMediaJavascriptInterface(), "tensaminMobileMedia")
@@ -65,11 +63,12 @@ class MainActivity : TauriActivity() {
   override fun onCreate(savedInstanceState: Bundle?) {
     WindowCompat.setDecorFitsSystemWindows(window, true)
     window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING)
+    super.onCreate(savedInstanceState)
+    NativeMtpBridge.nativeAttach(applicationContext)
     if (MtpSecureStore.isEnabled(this) && MtpSecureStore.hasConfig(this)) {
       NativeMtpBridge.startService(this)
     }
-    super.onCreate(savedInstanceState)
-    NativeMtpBridge.nativeAttach(applicationContext)
+    NativeAccessibilityBridge.nativeAttach(applicationContext)
     installKeyboardResizeWorkaround()
   }
 
@@ -90,7 +89,10 @@ class MainActivity : TauriActivity() {
     attachLayoutListener = null
     contentRoot = null
     contentChild = null
-    mediaWebView?.removeJavascriptInterface("tensaminMobileMedia")
+    mediaWebView?.let {
+      NativeAccessibilityBridge.detach(it)
+      it.removeJavascriptInterface("tensaminMobileMedia")
+    }
     mediaWebView = null
     MobileMediaEvents.detach()
     super.onDestroy()
@@ -203,16 +205,20 @@ class MainActivity : TauriActivity() {
     child: android.view.View,
     insets: WindowInsetsCompat? = ViewCompat.getRootWindowInsets(child),
   ) {
-    val visibleFrame = Rect()
-    child.getWindowVisibleDisplayFrame(visibleFrame)
-
     val rootHeight = child.rootView.height
     if (rootHeight <= 0) return
 
-    val imeHeight = insets?.getInsets(WindowInsetsCompat.Type.ime())?.bottom ?: 0
-    val keyboardHeight = maxOf(imeHeight, rootHeight - visibleFrame.bottom)
-    val keyboardVisible = keyboardHeight > rootHeight * 0.15
-    val usableHeight = if (keyboardVisible) rootHeight - keyboardHeight else ViewGroup.LayoutParams.MATCH_PARENT
+    val imeVisible = insets?.isVisible(WindowInsetsCompat.Type.ime()) == true
+    val imeHeight = if (imeVisible) {
+      insets.getInsets(WindowInsetsCompat.Type.ime()).bottom
+    } else {
+      0
+    }
+    val usableHeight = if (imeHeight in 1 until rootHeight) {
+      rootHeight - imeHeight
+    } else {
+      WindowManager.LayoutParams.MATCH_PARENT
+    }
 
     if (previousUsableHeight == usableHeight) return
 

apps/tauri/src-tauri/gen/android/app/src/main/java/net/tensamin/client/MediaProjectionService.kt

@@ -26,6 +26,7 @@ import android.os.HandlerThread
 import android.os.IBinder
 import android.util.Base64
 import android.util.DisplayMetrics
+import androidx.core.app.NotificationCompat
 import androidx.core.content.ContextCompat
 import java.io.ByteArrayOutputStream
 import java.util.concurrent.atomic.AtomicBoolean
@@ -107,16 +108,12 @@ class MediaProjectionService : Service() {
       stopIntent,
       PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
     )
-    val notification = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-      android.app.Notification.Builder(this, NOTIFICATION_CHANNEL_ID)
-    } else {
-      android.app.Notification.Builder(this)
-    }
+    val notification = NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID)
       .setSmallIcon(android.R.drawable.ic_menu_share)
       .setContentTitle("Tensamin is sharing your screen")
       .setContentText("Tap Stop to end screen sharing")
       .setOngoing(true)
-      .setCategory(android.app.Notification.CATEGORY_SERVICE)
+      .setCategory(NotificationCompat.CATEGORY_SERVICE)
       .addAction(android.R.drawable.ic_media_pause, "Stop", stopPendingIntent)
       .build()
 

apps/tauri/src-tauri/gen/android/app/src/main/java/net/tensamin/client/MtpForegroundService.kt

@@ -13,6 +13,8 @@ import android.net.Network
 import android.net.NetworkCapabilities
 import android.os.Build
 import android.os.IBinder
+import android.os.Process
+import android.os.SystemClock
 import androidx.core.app.NotificationCompat
 
 class MtpForegroundService : Service() {
@@ -74,10 +76,19 @@ class MtpForegroundService : Service() {
   }
 
   override fun onTaskRemoved(rootIntent: Intent?) {
+    val preferences = getSharedPreferences(SERVICE_PREFERENCES, Context.MODE_PRIVATE)
+    val now = SystemClock.elapsedRealtime()
+    if (now - preferences.getLong(LAST_TASK_RESTART, 0) < TASK_RESTART_COOLDOWN_MS) {
+      super.onTaskRemoved(rootIntent)
+      return
+    }
+    preferences.edit().putLong(LAST_TASK_RESTART, now).commit()
     if (MtpSecureStore.isEnabled(this) && MtpSecureStore.hasConfig(this)) {
       startService(Intent(this, MtpForegroundService::class.java))
     }
     super.onTaskRemoved(rootIntent)
+    // Tauri cannot recreate its WebView after the UI task is removed while this process survives.
+    Process.killProcess(Process.myPid())
   }
 
   override fun onDestroy() {
@@ -94,6 +105,9 @@ class MtpForegroundService : Service() {
     private const val CHANNEL_ID = "tensamin-connection"
     private const val NOTIFICATION_ID = 2201
     private const val ACTION_STOP = "net.tensamin.client.STOP_MTP"
+    private const val SERVICE_PREFERENCES = "tensamin-service"
+    private const val LAST_TASK_RESTART = "last-task-restart"
+    private const val TASK_RESTART_COOLDOWN_MS = 15_000L
     @Volatile private var connectionStatus = "Connecting"
 
     fun updateNotification(context: Context, status: String) {

apps/tauri/src-tauri/gen/android/app/src/main/java/net/tensamin/client/NativeAccessibilityBridge.kt

@@ -0,0 +1,51 @@
+package net.tensamin.client
+
+import android.content.Context
+import android.webkit.WebView
+import androidx.annotation.Keep
+import java.lang.ref.WeakReference
+
+@Keep
+object NativeAccessibilityBridge {
+  const val DEFAULT_INITIAL_SCALE = 290
+  private const val MIN_INITIAL_SCALE = 210
+  private const val MAX_INITIAL_SCALE = 500
+  private const val PREFERENCES = "tensamin-accessibility"
+  private const val INITIAL_SCALE = "initial-scale"
+
+  private var webView = WeakReference<WebView>(null)
+
+  init {
+    System.loadLibrary("mobile_lib")
+  }
+
+  @JvmStatic external fun nativeAttach(context: Context)
+
+  fun attach(webView: WebView) {
+    this.webView = WeakReference(webView)
+    webView.setInitialScale(getInitialScale(webView.context))
+  }
+
+  fun detach(webView: WebView) {
+    if (this.webView.get() === webView) this.webView.clear()
+  }
+
+  fun getInitialScale(context: Context): Int {
+    val preferences = context.getSharedPreferences(PREFERENCES, Context.MODE_PRIVATE)
+    val storedScale = preferences.getInt(INITIAL_SCALE, DEFAULT_INITIAL_SCALE)
+    val scale = storedScale.coerceIn(MIN_INITIAL_SCALE, MAX_INITIAL_SCALE)
+    if (scale != storedScale) preferences.edit().putInt(INITIAL_SCALE, scale).apply()
+    return scale
+  }
+
+  fun setInitialScale(context: Context, initialScale: Int) {
+    val nextScale = initialScale.coerceIn(MIN_INITIAL_SCALE, MAX_INITIAL_SCALE)
+    context.getSharedPreferences(PREFERENCES, Context.MODE_PRIVATE)
+      .edit()
+      .putInt(INITIAL_SCALE, nextScale)
+      .apply()
+    webView.get()?.let { currentWebView ->
+      currentWebView.post { currentWebView.setInitialScale(nextScale) }
+    }
+  }
+}

apps/tauri/src-tauri/gen/android/build.gradle.kts

@@ -1,4 +1,4 @@
-import com.android.build.gradle.LibraryExtension
+import com.android.build.api.dsl.LibraryExtension
 
 buildscript {
     repositories {
@@ -6,8 +6,8 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath("com.android.tools.build:gradle:9.3.1")
-        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:2.4.10")
+        classpath("com.android.tools.build:gradle:8.11.0")
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:2.1.20")
     }
 }
 

apps/tauri/src-tauri/gen/android/buildSrc/build.gradle.kts

@@ -18,6 +18,5 @@ repositories {
 
 dependencies {
     compileOnly(gradleApi())
-    implementation("com.android.tools.build:gradle:9.3.1")
+    implementation("com.android.tools.build:gradle:8.11.0")
 }
-

apps/tauri/src-tauri/gen/android/buildSrc/src/main/java/net/tensamin/client/kotlin/BuildTask.kt

@@ -5,8 +5,12 @@ import org.gradle.api.GradleException
 import org.gradle.api.logging.LogLevel
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.TaskAction
+import org.gradle.process.ExecOperations
+import javax.inject.Inject
 
-open class BuildTask : DefaultTask() {
+open class BuildTask @Inject constructor(
+    private val execOperations: ExecOperations,
+) : DefaultTask() {
     @Input
     var rootDirRel: String? = null
     @Input
@@ -50,7 +54,7 @@ open class BuildTask : DefaultTask() {
         val release = release ?: throw GradleException("release cannot be null")
         val args = listOf("tauri", "android", "android-studio-script");
 
-        project.exec {
+        execOperations.exec {
             workingDir(File(project.projectDir, rootDirRel))
             executable(executable)
             args(args)
@@ -65,4 +69,4 @@ open class BuildTask : DefaultTask() {
             args(listOf("--target", target))
         }.assertNormalExitValue()
     }
-}
+}