如何從BroadcastReceiver類更新片段ListView

Question

我正在調用應用程序，在我的應用程序中我設置了一個報警任務，並在任務完成後在broadcastreceiver類中更新片段列表視圖。

我的片段類..

public class CallScheduling extends Fragment implements View.OnClickListener { 

TextView messageText; 
FloatingActionButton AddScheduleCall; 
RecyclerView SheduleCalled; 
View view; 

DataBase dataBase; 
List<SchedueModel> schedueModels; 

public CallScheduling() { 
    // Required empty public constructor 
} 


@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    // Inflate the layout for this fragment 
    view = inflater.inflate(R.layout.fragment_call_scheduling, container, false); 
    setHasOptionsMenu(true); 
    init(); 
    return view; 
} 

private void init() { 

    messageText = (TextView) view.findViewById(R.id.messageText); 
    AddScheduleCall = (FloatingActionButton) view.findViewById(R.id.AddScheduleCall); 
    SheduleCalled = (RecyclerView) view.findViewById(R.id.SheduleCalled); 
    AddScheduleCall.setOnClickListener(this); 

    RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getActivity()); 
    SheduleCalled.setLayoutManager(mLayoutManager); 
    SheduleCalled.setItemAnimator(new DefaultItemAnimator()); 


} 

@Override 
public void onResume() { 
    super.onResume(); 
    dataBase = App.getInstance().getDatBase(); 
    if (dataBase.checkForTables(Constant.TABLE_SCHEDULING)) { 
     messageText.setVisibility(View.GONE); 
     SheduleCalled.setAdapter(new ScheduleAdapter(getActivity())); 
     schedueModels = dataBase.GetAllScheduledCall(); 

     Collections.sort(schedueModels, new Comparator<SchedueModel>() { 
      @Override 
      public int compare(SchedueModel schedueModel, SchedueModel t1) { 
       return schedueModel.getDate().compareTo(t1.getDate()); 
      } 
     }); 


     ActiveSchedul(); 

    } else { 

     messageText.setVisibility(View.VISIBLE); 
    } 

} 

private void ActiveSchedul() { 


    for (int i = 0; i < schedueModels.size(); i++) { 

     if (schedueModels.get(i).getCompleted().equalsIgnoreCase("0")) { 
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
      Date date = null; 
      try { 
       date = sdf.parse(schedueModels.get(0).getDate()); 
      } catch (ParseException e) { 
       e.printStackTrace(); 
      } 

      long startDate = date.getTime(); 

      Intent intentAlarm = new Intent(getActivity(), SchecduleBroadcast.class); 
      intentAlarm.putExtra("data", schedueModels.get(i)); 
      AlarmManager alarmManager = (AlarmManager) getActivity().getSystemService(Context.ALARM_SERVICE); 
      alarmManager.set(AlarmManager.RTC_WAKEUP, startDate, PendingIntent.getBroadcast(getActivity(), 1, intentAlarm, PendingIntent.FLAG_UPDATE_CURRENT)); 
      break; 
     } else { 
      boolean deleted = dataBase.deleteUser(schedueModels.get(i).getNumber(), Constant.TABLE_SCHEDULING, Constant.NUMBER); 
      if (deleted) { 
       schedueModels.remove(i); 
       SheduleCalled.getAdapter().notifyDataSetChanged(); 
      } 
     } 

    } 


} 

@Override 
public void onClick(View view) { 
    switch (view.getId()) { 
     case R.id.AddScheduleCall: 

      startActivity(new Intent(getActivity(), ScheduleForm.class)); 

      break; 

     default: 

      break; 
    } 
} 

，這是我的廣播接收器...

public class SchecduleBroadcast extends BroadcastReceiver { 

    SchedueModel schedueModel; 

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


     if (intent.getSerializableExtra("data") != null) { 
      schedueModel = (SchedueModel) intent.getSerializableExtra("data"); 
      Toast.makeText(context, schedueModel.getNumber() + " Is Completed ! Thanx", Toast.LENGTH_SHORT).show(); 
      schedueModel.setCompleted("1"); 
      App.getInstance().getDatBase().updateScheduledCall(schedueModel); 
//   new Home().updateFragment(CallScheduling.class, null); 


     } 

    } 
} 

Answer 1

步驟1：內部BroadcastReceiver類

class MyBroadCastReceiver extends BroadcastReceiver { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
    } 
} 

步驟2：註冊接收機

@Override 
    protected void onResume() { 
     super.onResume(); 
     if (!receiverResgistered) { 
      registerReceiver(myBroadCastReceiver, new IntentFilter("intent.filter.data")); 
      receiverResgistered = true; 
     } 
    } 

步驟3：註銷接收機

@Override 
    protected void onPause() { 
     super.onPause(); 
     if (receiverResgistered) { 
      unregisterReceiver(myBroadCastReceiver); 
      receiverResgistered = false; 
     } 
    } 

步驟4：廣播的從SchecduleBroadcast

數據

OR

您可以SchecduleBroadcast內部類片段的

Answer 2

您需要註冊您的片段LocalBroadcast，並調用您的更新方法onReceive