带PIN/图案/密码锁时，开机广播重设闹钟失效问题求助

核心需求：设置闹钟后设备重启，即使未解锁设备，闹钟仍需在指定时间响起。

问题现象：

• 无PIN/图案/密码锁（仅滑动或无锁）时功能正常
• 存在PIN/图案/密码锁时，即便用户解锁设备，闹钟也不会响起

已做配置：

• 给相关组件添加android:directBootAware="true"
• 申请android.permission.RECEIVE_BOOT_COMPLETED权限
• 监听ACTION_LOCKED_BOOT_COMPLETED广播

相关代码 #

Android清单文件（敏感信息已移除） #

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="[REDACTED]">

    <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.USE_FULL_SCREEN_INTENT" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />

    <application
        android:name=".app.AlarmApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="[REDACTED]">
        <activity
            android:name=".features.alarmring.RingActivity"
            android:exported="false" />
        <activity
            android:name=".features.mainscreen.MainActivity"
            android:exported="true"
            android:showOnLockScreen="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <receiver
            android:name=".features.alarmscheduling.AlarmBroadcastReceiver"
            android:directBootAware="true"
            android:exported="false">
        </receiver>
        <receiver
            android:directBootAware="true"
            android:name=".features.alarmscheduling.RescheduleOnBootBroadcastReceiver"
            android:exported="false">
            <intent-filter>
                <action android:name="android.intent.action.LOCKED_BOOT_COMPLETED" />
            </intent-filter>
        </receiver>

        <service android:name=".features.alarmring.AlarmService" />
        <service android:name=".features.alarmscheduling.RescheduleOnBootService" />
    </application>

</manifest>

RescheduleOnBootBroadcastReceiver代码 #

class RescheduleOnBootBroadcastReceiver : BroadcastReceiver() {
    override fun onReceive(context: Context?, intent: Intent?) {
        if (intent?.action == Intent.ACTION_LOCKED_BOOT_COMPLETED) {
            Toast.makeText(context, "Reschedule on reboot received", Toast.LENGTH_SHORT).show()

            startRescheduleOnBootService(context)
        }
    }

    private fun startRescheduleOnBootService(context: Context?) {
        val intentService = Intent(context, RescheduleOnBootService::class.java)
        context?.startForegroundService(intentService)
    }
}

RescheduleOnBootService代码 #

class RescheduleOnBootService : LifecycleService() {
    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        super.onStartCommand(intent, flags, startId)

        val db = AlarmDatabase.getDatabase(applicationContext)
        val repository = AlarmRepository(db.alarmDao())

        repository.allAlarms.asLiveData().observe(this) { alarms ->
            for (alarm in alarms) {
                if (alarm.isOn) scheduleAlarm(applicationContext, alarm)
            }
        }

        return START_STICKY
    }

    override fun onBind(intent: Intent): IBinder? {
        super.onBind(intent)
        return null
    }
}

排查关键点 #

1. Direct Boot模式下的数据库访问权限

   • ACTION_LOCKED_BOOT_COMPLETED触发时处于Direct Boot模式，默认Room数据库存储在设备加密区，此时无法访问。
   • 解决：使用Context.createDeviceProtectedStorageContext()获取上下文初始化数据库，将闹钟数据存储到凭据加密区。

2. ForegroundService的通知强制要求

   • Android 12+中，调用startForegroundService()后必须在5秒内调用startForeground()显示通知，否则系统会终止服务。当前服务未实现此逻辑，导致重启调度失败。
   • 解决：在onStartCommand开头添加前台通知代码，示例：

     val notification = NotificationCompat.Builder(this, "ALARM_CHANNEL")
         .setSmallIcon(R.drawable.ic_alarm)
         .setContentTitle("恢复闹钟设置")
         .setContentText("正在重新调度重启前的闹钟")
         .setPriority(NotificationCompat.PRIORITY_LOW)
         .build()
     startForeground(1, notification)
     

3. 广播接收器的兼容性配置

   • RescheduleOnBootBroadcastReceiver设为android:exported="false"，部分厂商ROM可能无法正常接收系统广播。建议改为true并添加权限过滤：

     <receiver
         android:directBootAware="true"
         android:name=".features.alarmscheduling.RescheduleOnBootBroadcastReceiver"
         android:exported="true">
         <intent-filter>
             <action android:name="android.intent.action.LOCKED_BOOT_COMPLETED" />
         </intent-filter>
         <permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     </receiver>
     

4. 补充监听ACTION_BOOT_COMPLETED

   • 若Direct Boot模式下调度失败，解锁后系统会发送ACTION_BOOT_COMPLETED广播，当前接收器未监听该事件，导致无重试机会。建议同时添加该动作：

     <intent-filter>
         <action android:name="android.intent.action.LOCKED_BOOT_COMPLETED" />
         <action android:name="android.intent.action.BOOT_COMPLETED" />
     </intent-filter>
     

5. RingActivity的锁屏显示配置

   • 当前仅MainActivity配置了锁屏显示属性，RingActivity需要添加以下属性才能在锁屏时正常弹出：

     <activity
         android:name=".features.alarmring.RingActivity"
         android:exported="false"
         android:showOnLockScreen="true"
         android:showWhenLocked="true"
         android:turnScreenOn="true" />
     

内容的提问来源于stack exchange，提问作者Alex Bolgarov