Question

当我的Android设备没有重启时，我的应用程序可以工作，但是当我关闭Android设备后，尽管我添加了BOOT_COMPLETED，该应用程序仍无法工作。

我一直在寻找类似的问题，但是它们都像我一样工作，我不知道怎么了

清单

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

<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.SET_ALARM" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />


    <service android:name=".BootService" />

    <receiver
        android:name=".RestartAlarmsReceiver"
        android:enabled="true">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>
    <receiver
        android:name=".MyAlarmReceiver"
        android:process=":remote" />

</application>

RestartAlarmsReciver

public class RestartAlarmsReceiver extends BroadcastReceiver {

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

        if ("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) {


            Intent i = new Intent(context, BootService.class);
            ComponentName service = context.startService(i);
        }

    }
}

BootService：等于我的主AlarmService

public class BootService extends IntentService {
    public BootService(String name) {
        super(name);
    }

    private NotificationManager notificationManager;
    private final int NOTIFICATION_ID = 1010;
    private AdminSQLiteOpenHelper admin;
    private Cursor fila;
    private SQLiteDatabase bd;
    private String alarm, descrip, title;

    @Override
    protected void onHandleIntent(@Nullable Intent intent) {
        Calendar calenda = Calendar.getInstance();
        int hour, min, day, m, year;
        String cadenaF, cadenaH, date_system, time_system;

        day = calenda.get(Calendar.DAY_OF_MONTH);
        m = calenda.get(Calendar.MONTH) + 1;
        year = calenda.get(Calendar.YEAR);
        hour = calenda.get(Calendar.HOUR_OF_DAY);
        min = calenda.get(Calendar.MINUTE);
        date_system = m + "-" + day + "-" + year + " ";
        time_system = hour + ":" + min;
        admin = new AdminSQLiteOpenHelper(getApplicationContext(), vars.bd, null, vars.version);
        bd = admin.getWritableDatabase();

        if (bd != null) {
            fila = bd.rawQuery("SELECT * FROM alarma WHERE datea='" + date_system + "' AND timea= '" + time_system + "'", null);
            if (fila.moveToFirst()) {
                alarm = fila.getString(0);
                title = fila.getString(1);
                descrip = fila.getString(2);
                triggerNotification(getApplicationContext(), title + "\n" + descrip);
            }
        }
        bd.close();
    }

    private void triggerNotification(Context contexto, String t) {
        Intent notificationIntent = new Intent(contexto, MainActivity.class);
        notificationIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent contentIntent = PendingIntent.getActivity(contexto, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
        Uri defaultSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        long[] pattern = new long[]{2000, 1000, 2000};

        NotificationCompat.Builder builder = new NotificationCompat.Builder(contexto);
        builder.setContentIntent(contentIntent)

                .setTicker("")
                .setContentTitle("alarm ")
                .setContentTitle("")
                .setContentText(t)
                .setContentInfo("Info")
                .setLargeIcon(BitmapFactory.decodeResource(contexto.getResources(), R.drawable.ic_launcher_background))
                .setSmallIcon(R.drawable.ic_launcher_background)
                .setAutoCancel(true) 
                .setSound(defaultSound)
                .setVibrate(pattern);

        Notification notificacion = new NotificationCompat.BigTextStyle(builder)
                .bigText(t)
                .setBigContentTitle("example")
                .setSummaryText("more example")
                .build();

        notificationManager = (NotificationManager) contexto.getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(NOTIFICATION_ID, notificacion);
    }

}

谢谢

Answer 1

可以更改接收器以添加导出和类别吗？

<receiver android:name=".RestartAlarmsReceiver" android:enabled="true" android:exported="true">
    <intent-filter>
         <action android:name="android.intent.action.BOOT_COMPLETED" />
         <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>            
</receiver>

根据官方文件

android：exported

广播接收器是否可以从其应用程序外部的源接收消息-如果可以，则为“ true”，否则为“ false”。如果为“ false”，则广播接收器只能接收的消息是相同应用程序的组件或具有相同用户ID的应用程序发送的消息。默认值取决于广播接收器是否包含意图过滤器。没有任何过滤器意味着只能由指定其确切类名的Intent对象调用它。这意味着接收器仅用于应用程序内部使用（因为其他人通常不会知道类名）。因此，在这种情况下，默认值为“ false”。另一方面，至少有一个过滤器的存在意味着广播接收器旨在接收系统或其他应用程序广播的意图，因此默认值为“ true”。

此属性不是限制广播接收器外部曝光的唯一方法。您还可以使用权限来限制可以向其发送消息的外部实体（请参阅权限属性）。

希望这会有所帮助

为什么我的闹钟无法与BOOT_COMPLETED一起使用

1 个答案: