AlarmManager不能從開機服務接收器工作

我已經制作了一個需要觸發報警的應用程序.Alarm Manager在從某些活動計劃時工作正常。由於警報在重新啓動時被刪除，因此我使用boot_Receiver重新安排警報。但問題在於，警報在從bootreceiver類安排時不會觸發。請幫助..AlarmManager不能從開機服務接收器工作

AlarmManager類： -

public class NotifyService extends WakefulBroadcastReceiver { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
    Notification_Holder notifholder; 
    Type t=new TypeToken<Notification_Holder>(){}.getType(); 

    Gson js=new Gson(); 
    notifholder=js.fromJson(intent.getStringExtra("one"),t); 
    Notification_Creator notifcreator=new     Notification_Creator(notifholder.title,notifholder.content,notifholder.cal,context); 
    notifcreator.create_notification(); 
} 
}

BootReceiver類： -

public class AtBoot extends BroadcastReceiver { 
SharedPreferences sharedPreferences; 
AlarmManager alarmManager; 
Intent x; 
PendingIntent pendingIntent; 

@Override 
public void onReceive(Context context, Intent intent) { 

    sharedPreferences = context.getSharedPreferences("todoshared", Context.MODE_PRIVATE); 
    String f = sharedPreferences.getString("todolist", null); 
    Gson json = new Gson(); 
    alarmManager=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE); 
     vClass.notes = Notification_Holder.convert_from_jason(f); 
    x=new Intent(context,NotifyService.class); 
    pendingIntent=PendingIntent.getService(context,2100,x,0); 
    alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(),pendingIntent); 
    Vibrator vib=(Vibrator)context.getSystemService(Context.VIBRATOR_SERVICE); 
    if(vib.hasVibrator()) { 
     vib.vibrate(1500); 
    }

}}

清單文件： -

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.VIBRATE" /> 
<uses-permission android:name="android.permission.WAKE_LOCK" /> 
<uses-permission android:name="com.android.alarm.permission.SET_ALARM" /> 
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /> 





<application 
    android:allowBackup="true" 
    android:hardwareAccelerated="true" 
    android:label="@string/app_name" 
    android:supportsRtl="true" 
    android:icon="@mipmap/ic_launcher" 
    android:theme="@style/MyAppBar"> 


    <activity 
     android:name=".scrapper" 
     android:noHistory="true" 
     android:theme="@style/AppTheme.NoActionBar" 
     android:screenOrientation="portrait"> 

    </activity> 
    <activity 
     android:name=".schedule" 
     android:theme="@style/AppTheme.NoActionBar" /> 
    <activity 
     android:name=".workSpace" 
     android:theme="@style/AppTheme.NoActionBar" /> 

    <receiver android:name=".widget"> 
     <intent-filter> 
      <action android:name="android.appwidget.action.APPWIDGET_UPDATE" /> 
     </intent-filter> 

     <meta-data 
      android:name="android.appwidget.provider" 
      android:resource="@xml/widget_info" /> 
    </receiver> 

    <service 
     android:name=".widgetService" 
     android:permission="android.permission.BIND_REMOTEVIEWS" /> 

    <receiver android:name=".NotifyService" /> 



    <activity 
     android:name=".showSubject" 
     android:theme="@style/AppTheme.popupTheme" /> 

    <activity android:name=".splashScreen" 
     android:theme="@style/AppTheme.NoActionBar" 
     android:noHistory="true" 
     android:screenOrientation="portrait"> 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 
      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 

    <receiver 
     android:name=".AtBoot" 
     android:enabled="true" 
     android:exported="true" 
     android:label="AtBoot"> 
     <intent-filter> 
      <action android:name="android.intent.action.BOOT_COMPLETED" /> 
      <action android:name="android.intent.action.QUICKBOOT_POWERON" /> 
     </intent-filter> 
    </receiver> 

</application>

我在AtBoot類中添加了振動器，檢查它是否在啓動時被調用。並且手機vibrates..This意味着該類被調用在啓動時，但鬧鐘部分不工作

來源

2017-01-11 Sparsha Saha