将数据保存到SQlite DB

Question

我有一个使用推送通知创建例行任务的应用程序。当我添加多个任务（每个任务都有一个唯一的ID），并且出现推送通知时，它会显示上一个任务的数据。我检查了LogCat，并确保在 TaskActivity 中每个任务都有一个唯一的ID，但在 AlarmService 中，只显示输入的最后一个任务。

我经常搜索，但我也找不到任何错误的线索。

我还将PendingIntent.FLAG_UPDATE_CURRENT更改为FLAG_CANCEL_CURRENT和FLAG_ONE_SHOT，但它无效。

我考虑为每项任务添加intent，但我找不到办法。

TaskActivity

   .
   .
   .
    public void setNotificationForNewTaskInside() {
    alarmManager = (AlarmManager) getApplicationContext().getSystemService(
            ALARM_SERVICE);
    Intent alarmIntent = new Intent(this,AlarmReceiver.class);

    Random random = new Random();
    randomNum= random.nextInt(9999 - 1000) + 1000;

     pendingIntent = PendingIntent.getBroadcast(getApplicationContext(),
             randomNum, alarmIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    if (DeviceTimeAndDate.devicetaskTimeDate.equals(newtaskTimeDate)) {

       finalLong=System.currentTimeMillis();

        alarmManager.setExact(AlarmManager.RTC_WAKEUP, finalLong, pendingIntent);

    }
   else   if (DeviceTimeAndDate.devicetaskTimeDate.before(newtaskTimeDate)) {

       finalLong=new_task_timeInMilliseconds;
        alarmManager.setExact(AlarmManager.RTC_WAKEUP, finalLong, pendingIntent);

    } else if (DeviceTimeAndDate.devicetaskTimeDate.after(newtaskTimeDate)) {

        Toast.makeText(context, "زمان یا تاریخ مورد گذشنه است، لطفا زمان دیگری را انتخاب کنید", Toast.LENGTH_SHORT).show();
        startDate.setText(DeviceTimeAndDate.deviceTime);
        taskTime.setText(EditTaskActivity.secondMiConver);
    }

AlarmReciver

 public class AlarmReceiver  extends BroadcastReceiver {
 String TAG = "AlarmReceiver";
  public RemoteViews remoteViews;
public  Uri sound;
public Context context;
public Notification notification;
int finalRandumNum;
 public  static String getTitle,getTime;
public AlarmReceiver (){
}

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

    sound = Uri.parse("android.resource://" + context.getPackageName() + "/raw/plucky");
      remoteViews= new RemoteViews(context.getPackageName(), R.layout.notification);
        remoteViews.setImageViewResource(R.id.notif_image, R.mipmap.ic_launcher);
      remoteViews.setTextViewText(R.id.title,getTitle);
     remoteViews.setTextViewText(R.id.text,getTime);

    NotificationManager notif=(NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
    android.app.Notification notify=new NotificationCompat.Builder(context, "CHANNEL_ID")
            .setContentTitle(TaskActivity.subjEntry)
            .setWhen(finalLong)
            .setSound(sound)
            .setContentText(TaskActivity.timeEntryy)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setContentIntent(TaskActivity.pendingIntent)
            .build();

    notif.notify(TaskActivity.randomNum, notify);

Answer 1

我认为您通过将任务详细信息保存在变量（ TaskActivity.subjEntry和TaskActivity.timeEntryy ）中会出错，这意味着每次尝试添加新任务时都会替换数据。

因此，您应该将数据保存在数据库，数组或任何其他数据结构中，并在创建通知时检索数据。

将数据保存到SQlite DB

 public void addData(Data data){

    SQLiteDatabase database = getWritableDatabase();
    ContentValues cv_data = new ContentValues();
    cv_data.put("key", data.key());
    cv_data.put("subjEntry", data.subjEntry());
    cv_data.put("subjTime", data.subjTime());

   database.insert("tablename",null,cv_data);
   database.close();
}

以下是从SQLite数据库

检索数据的代码

   public List<Data> getData(String key){

    String columns [] = {
         "key", "subjEntry", "subjTime"
    };

    String sortingOrder = " subjTime ASC";

    List <Data> dataList = new ArrayList <Data>();

    SQLiteDatabase mdDatabase = getWritableDatabase();

    Cursor cursor = mdDatabase.query("tablename",
            columns,
            null,
            null,
            null,
            null,
            sortingOrder);
    if (cursor.moveToFirst()){
        do {
        if(cursor.getString(cursor.getColumnIndex("subjEntry")).equals(Key)){
        }
           Data data = new Data();
           data.setsubjEntry(cursor.getString(cursor.getColumnIndex("subjEntry")));
           data.setsubjTime(cursor.getString(cursor.getColumnIndex("subjTime")));
           dataList.add(data);
        }while (cursor.moveToNext());
    }
    mdDatabase.close();
    cursor.close();

    return dataList;
}'

或者尝试 Firebase JobDispatcher

android-推送通知仅显示最后一个ID

1 个答案:

将数据保存到SQlite DB

以下是从SQLite数据库