fix: restore voice_interaction_service on ColorOS 16 (Trigger failed)

README.md

@@ -15,6 +15,7 @@
 
 2. 安装并打开MiCTS
     - 如果幸运的话，在不需要root的情况下，打开MiCTS就会直接触发圈定即搜
+    - 如果提示`助理服务未运行`（例如ColorOS 16每次重启都会清空`voice_interaction_service`），执行一次`adb shell pm grant com.parallelc.micts android.permission.WRITE_SECURE_SETTINGS`（如果被拒绝，例如ColorOS国行版，可改为使用`adb install -r -g MiCTS.apk`重新安装），之后MiCTS会自动恢复助理服务
     - 如果没有反应，大概率是因为Google对你的设备禁用了圈定即搜功能（可以通过在Logcat日志中查找`Omni invocation failed: not enabled`确认），在有root的情况下，可以尝试以下方法：
         - 在LSPosed里激活模块，在[MiCTS设置](#进入设置的方式)里开启`Google机型伪装`后，强制重启Google
         - 如果还是不行，使用[GMS-Flags](https://github.com/polodarb/GMS-Flags)，将`com.google.android.apps.search.omnient.device`的flag`45631784`设为true

README_en.md

@@ -15,6 +15,7 @@ Trigger Circle to Search on any Android 9–16 device
 
 2. Install and launch MiCTS
    - If you're lucky, Circle to Search will be triggered directly without root when launching MiCTS
+   - If it shows `Assistant service not running` (e.g. ColorOS 16, where `voice_interaction_service` is cleared on every reboot), run once `adb shell pm grant com.parallelc.micts android.permission.WRITE_SECURE_SETTINGS` (if it is denied, e.g. on ColorOS CN, reinstall with `adb install -r -g MiCTS.apk` instead), then MiCTS will restore the assistant service automatically
    - If nothing happened, most likely it's because Google disabled Circle to Search for your device (you can confirm by checking the message `Omni invocation failed: not enabled` in Logcat). Try the following **with root**:
      - Activate the module in LSPosed, enable `Device spoof for Google` in the [MiCTS settings](#how-to-enter-settings), and force restart Google
      - If it still doesn't work, then change `com.google.android.apps.search.omnient.device` flag `45631784` to true using [GMS-Flags](https://github.com/polodarb/GMS-Flags)

app/src/main/AndroidManifest.xml

@@ -1,7 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
 
     <uses-permission android:name="android.permission.VIBRATE" />
+    <uses-permission
+        android:name="android.permission.WRITE_SECURE_SETTINGS"
+        tools:ignore="ProtectedPermissions" />
+
+    <queries>
+        <intent>
+            <action android:name="android.speech.RecognitionService" />
+        </intent>
+    </queries>
+
     <application
         android:name=".MainApplication"
         android:description="@string/xposed_description"

app/src/main/java/com/parallelc/micts/ui/activity/MainActivity.kt

@@ -1,14 +1,20 @@
 package com.parallelc.micts.ui.activity
 
+import android.Manifest
 import android.annotation.SuppressLint
+import android.content.ComponentName
 import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
 import android.media.AudioAttributes
 import android.os.Build
 import android.os.Bundle
 import android.os.IBinder
 import android.os.SystemClock
 import android.os.VibrationEffect
 import android.os.Vibrator
+import android.provider.Settings
+import android.speech.RecognitionService
 import android.util.Log
 import android.widget.Toast
 import androidx.activity.ComponentActivity
@@ -72,13 +78,67 @@ fun triggerCircleToSearch(entryPoint: Int, context: Context?, vibrate: Boolean):
     return result
 }
 
+/**
+ * Some ROMs (e.g. ColorOS 16) keep the assistant role on Google but leave voice_interaction_service
+ * empty (it is cleared again on reboot), so no VoiceInteractionService is running and
+ * showSessionFromSession always returns false. Restore it from the assistant setting.
+ * Requires WRITE_SECURE_SETTINGS granted via adb.
+ * @return true if the setting was rewritten and the service needs time to bind
+ */
+fun restoreVoiceInteractionService(context: Context): Boolean {
+    return runCatching {
+        val resolver = context.contentResolver
+        if (!Settings.Secure.getString(resolver, "voice_interaction_service").isNullOrEmpty()) return false
+        val assistant = Settings.Secure.getString(resolver, "assistant")
+        val component = assistant?.let { ComponentName.unflattenFromString(it) } ?: return false
+        if (context.checkSelfPermission(Manifest.permission.WRITE_SECURE_SETTINGS) != PackageManager.PERMISSION_GRANTED) {
+            Log.w(LOG_TAG, "voice_interaction_service is empty, run: adb shell pm grant ${context.packageName} ${Manifest.permission.WRITE_SECURE_SETTINGS} " +
+                "(if denied, reinstall with: adb install -r -g <apk>)")
+            return false
+        }
+        Settings.Secure.putString(resolver, "voice_interaction_service", assistant)
+        if (Settings.Secure.getString(resolver, "voice_recognition_service").isNullOrEmpty()) {
+            context.packageManager.queryIntentServices(
+                Intent(RecognitionService.SERVICE_INTERFACE).setPackage(component.packageName),
+                PackageManager.MATCH_DISABLED_COMPONENTS
+            ).firstOrNull()?.serviceInfo?.let {
+                Settings.Secure.putString(resolver, "voice_recognition_service", ComponentName(it.packageName, it.name).flattenToString())
+            }
+        }
+        Log.i(LOG_TAG, "restored voice_interaction_service to $assistant")
+        true
+    }.onFailure { e ->
+        Log.e(LOG_TAG, "restoreVoiceInteractionService failed: " + e.stackTraceToString())
+    }.getOrDefault(false)
+}
+
+fun isVoiceInteractionServiceMissing(context: Context): Boolean {
+    return runCatching {
+        val resolver = context.contentResolver
+        Settings.Secure.getString(resolver, "voice_interaction_service").isNullOrEmpty() &&
+            !Settings.Secure.getString(resolver, "assistant").isNullOrEmpty()
+    }.getOrDefault(false)
+}
+
 class MainActivity : ComponentActivity() {
     suspend fun delayAndTrigger(delayMs: Long, vibrate: Boolean) {
+        val restored = restoreVoiceInteractionService(this)
         if (delayMs > 0) {
             delay(delayMs)
         }
-        if (!triggerCircleToSearch(1, this, vibrate)) {
-            Toast.makeText(this, getString(R.string.trigger_failed), Toast.LENGTH_SHORT).show()
+        var result = triggerCircleToSearch(1, this, vibrate)
+        // The service binds asynchronously after the setting changes, retry until it is ready
+        var retries = if (restored) 20 else 0
+        while (!result && retries-- > 0) {
+            delay(100)
+            result = triggerCircleToSearch(1, this, vibrate)
+        }
+        if (!result) {
+            if (isVoiceInteractionServiceMissing(this)) {
+                Toast.makeText(this, getString(R.string.voice_interaction_service_missing), Toast.LENGTH_LONG).show()
+            } else {
+                Toast.makeText(this, getString(R.string.trigger_failed), Toast.LENGTH_SHORT).show()
+            }
         }
         finish()
     }

app/src/main/res/values-vi/strings.xml

@@ -4,6 +4,7 @@
     <string name="xposed_description">Kích hoạt tính năng Tìm kiếm vòng tròn trên bất kỳ thiết bị Android 9–16</string>
     <string name="title_activity_settings">Cài đặt</string>
     <string name="trigger_failed">Kích hoạt thất bại!</string>
+    <string name="voice_interaction_service_missing">Dịch vụ trợ lý chưa chạy. Hãy cấp quyền WRITE_SECURE_SETTINGS qua adb</string>
     <string name="app_settings">Cài đặt ứng dụng</string>
     <string name="default_trigger_delay">Độ trễ kích hoạt mặc định</string>
     <string name="tile_trigger_delay">Độ trễ kích hoạt của ô lối tắt</string>

app/src/main/res/values-zh/strings.xml

@@ -4,6 +4,7 @@
     <string name="xposed_description">在任意Android 9–16设备上触发圈定即搜（Circle to Search）功能</string>
     <string name="title_activity_settings">设置</string>
     <string name="trigger_failed">触发失败！</string>
+    <string name="voice_interaction_service_missing">助理服务未运行，请通过adb授予WRITE_SECURE_SETTINGS权限</string>
     <string name="app_settings">应用设置</string>
     <string name="default_trigger_delay">默认触发延迟</string>
     <string name="tile_trigger_delay">磁贴触发延迟</string>

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

@@ -5,6 +5,7 @@
     <string name="xposed_description">Trigger Circle to Search on any Android 9–16 device</string>
     <string name="title_activity_settings">Settings</string>
     <string name="trigger_failed">Trigger failed!</string>
+    <string name="voice_interaction_service_missing">Assistant service not running. Grant WRITE_SECURE_SETTINGS via adb</string>
     <string name="app_settings">App Settings</string>
     <string name="default_trigger_delay">Default trigger delay</string>
     <string name="tile_trigger_delay">Tile trigger delay</string>