如何使用警报管理器将数据从片段传递到广播接收器

Posted 2023-04-19

【中文标题】如何使用警报管理器将数据从片段传递到广播接收器

【英文标题】：How to Pass Data from Fragment to Broadcast Receiver with Alarm Manager

【发布时间】：2020-06-10 01:20:47

【问题描述】：

在片段内的我的应用程序中，我使用警报管理器设置了警报事件，当警报事件发生时触发广播接收器。问题是我想将数据传递给该广播接收器，每次它给出 0 作为默认值。我已经尝试了谷歌的所有可能的解决方案，但它没有 为我工作。 Fragment里面的Method如下：

public static final String EVENT = "EventData";
public void addToAlarmManager(long id) 
        AlarmManager alarmManager = (AlarmManager) getActivity().getSystemService(getContext().ALARM_SERVICE);
        Intent eventIntent = new Intent(getContext(), TimeEventReciever.class);
        eventIntent.putExtra(EVENT,id);
        PendingIntent eventPendingIntent = PendingIntent.getBroadcast(getContext(), 1, eventIntent, PendingIntent.FLAG_UPDATE_CURRENT);
    alarmManager.setExact(AlarmManager.RTC_WAKEUP, selectedTime.longValue(), eventPendingIntent);

TimeEventReciever 类如下：

public class TimeEventReciever extends BroadcastReceiver 
    @Override
    public void onReceive(Context context, Intent intent) 
        long eventId=intent.getLongExtra(EVENT,0);
       Log.e("event","event id : "+String.valueOf(eventId));

【参考方案1】：

试试这个可能对你有帮助

将您正在使用的意图中的数据放入待处理的意图中作为附加。您将在广播接收器的 onReceive 方法中获得此意图。尝试如下定义待定意图。

PendingIntent eventPendingIntent = PendingIntent.getBroadcast(activity, 0, eventIntent,PendingIntent.FLAG_CANCEL_CURRENT);

【参考方案2】：

使用下面的步骤通过警报管理器将数据从片段传递到广播接收器

第 1 步： 在广播接收器类文件的意图中添加值。

   Intent intent = new Intent(context, MyBroadcastReceiver.class);

    intent.putExtra("rId", currentReminder.getId());
    intent.putExtra("rTitle", currentReminder.getrTitle());
    intent.putExtra("rDesc", currentReminder.getrDesc());
    intent.putExtra("rDate", currentReminder.getrDate());
    intent.putExtra("rTime", currentReminder.getrTime());
    intent.putExtra("rCallFor", currentReminder.getrType());
    intent.putExtra("rName", currentReminder.getCallLogBean().getCallName());
    intent.putExtra("rMobile", currentReminder.getCallLogBean().getCallNumber());

第 2 步：然后在下面的代码的帮助下，使用 Pending Intent 传递这个 Intent 对象。

注意：在intent.putExtra之后写下下面的代码

  PendingIntent pendingIntent = PendingIntent.getBroadcast(
            this.getActivity(), currentReminder.getId(), intent, 0);
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(ALARM_SERVICE);

alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, reminderTime,
                repeateInterval, pendingIntent);

注意：第 1 步和第 2 步：写下您根据要求使用的片段或活动。

================================================ ====================================

第 3 步：创建 BrodcastReceiver 文件并添加以下代码。这有助于您从广播接收器的意图中检索数据

public class MyBroadcastReceiver extends BroadcastReceiver 
public  static  MediaPlayer mp;
private static final int NOTIFICATION_ID = 0;
private NotificationManager mNotifyManager;
private NotificationCompat.Builder build;
String TAG="BrodcastReceiver";
int rId;
String rTitle,rDesc,rDate,rTime,rCallFor,rName,rMobile;
PrefBean prefBean=new PrefBean();
SharedPrefrenceManager sharedPrefrenceManager;
ReminderBean currentReminder;

@Override
public void onReceive(Context context, Intent intent) 
    rId= intent.getIntExtra("rId",0);
    rTitle= intent.getStringExtra("rTitle");
    rDesc = intent.getStringExtra("rDesc");
    rDate = intent.getStringExtra("rDate");
    rTime = intent.getStringExtra("rTime");
    rCallFor = intent.getStringExtra("rCallFor");
    rName = intent.getStringExtra("rName");
    rMobile = intent.getStringExtra("rMobile");
    CallLogBean callLogBean=new CallLogBean();
    callLogBean.setCallName(rName);
    callLogBean.setCallNumber(rMobile);
    Log.e(TAG, "onReceive: "+rId );



    NotificationManager manager = (NotificationManager) context.getSystemService(NOTIFICATION_SERVICE);
        mp = MediaPlayer.create(context, R.raw.alarm);
        mp.start();
        Toast.makeText(context, "Alarm....", Toast.LENGTH_LONG).show();
    sharedPrefrenceManager = new SharedPrefrenceManager(Const.FILE_NAME,context);
    prefBean=sharedPrefrenceManager.getSharedPreferences();
    String remindAs=prefBean.getShowReminderAs();
    Log.e(TAG, "onReceive: "+remindAs );
    if(remindAs.equals(Const.ALARAM))

        startNotification(context,intent);
    else
        startNotification(context,intent);
    





private void startNotification(Context context, Intent intent) 
    RemoteViews notificationLayout = new RemoteViews(context.getPackageName(), R.layout.notification_small);
    RemoteViews notificationLayoutExpanded = new RemoteViews(context.getPackageName(), R.layout.notification_large);


    Intent notificationIntent = new Intent(context, HomeActivity.class);

    notificationLayout.setTextViewText(R.id.notification_title,rTitle);

    notificationLayoutExpanded.setTextViewText(R.id.not_txt_title,rTitle);
    notificationLayoutExpanded.setTextViewText(R.id.not_txt_desc,rDesc);
    notificationLayoutExpanded.setTextViewText(R.id.not_txt_callfor,rCallFor);
    notificationLayoutExpanded.setTextViewText(R.id.not_txt_name,rName);


    //notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
      //      | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    notificationIntent.putExtra("rId",rId);
    notificationIntent.putExtra("rTitle",rTitle);
    notificationIntent.putExtra("rDesc",rDesc);

    Log.e(TAG, "startNotification:\n  "+rId );
    PendingIntent pendingIntent = PendingIntent.getActivity(context, rId,
            notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    mNotifyManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    build = new NotificationCompat.Builder(context);
    build.setContentTitle(rTitle)
            .setContentText(rDesc)
            .setChannelId(rId+"")
            .setAutoCancel(true)
            .setStyle(new NotificationCompat.DecoratedCustomViewStyle())
            .setCustomContentView(notificationLayout)
            .setCustomBigContentView(notificationLayoutExpanded)
            .setContentIntent(pendingIntent)
            .setSmallIcon(R.drawable.ic_calendar);

    // Since android Oreo notification channel is needed.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) 
        NotificationChannel channel = new NotificationChannel(rId+"" ,
                "Call Reminder",
                NotificationManager.IMPORTANCE_HIGH);
        channel.setDescription("With sound");
        channel.setSound(null,null);
        channel.enableLights(false);
        channel.setLightColor(Color.BLUE);
        channel.enableVibration(true);
        mNotifyManager.createNotificationChannel(channel);

    


    mNotifyManager.notify(rId, build.build());