当GCM监听器触发时，只加载回收站视图

情况是，当推送通知GCMListener被触发时，NewBookingActivity会加载。由于我使用的是recyler视图，所以片段和适配器已经实现。它将出现在回收站视图中，因为预订可能不止一个。

问题是每当触发新的推送通知活动将重叠。我知道这会发生，因为我称之为活动。

我想只创建GCMListener触发时加载的回收视图？

任何帮助表示赞赏和非常感谢。

MyGcmListenerService.java

public class MyGcmListenerService extends GcmListenerService { 
    private static final String TAG = "MyGcmListenerService"; 
    private static final String MyPREFERENCES = "xxxxx"; 
    private static final String JOB_KEY = "xxx"; 

    private String JobStatus; 

    int countNotification = 0; 

    /** 
    * Called when message is received. 
    * 
    * @param from SenderID of the sender. 
    * @param data Data bundle containing message data as key/value pairs. 
    *    For Set of keys use data.keySet(). 
    */ 
    // [START receive_message] 
    @Override 
    public void onMessageReceived(String from, Bundle data) { 
     String message = data.getString("message"); 
     Log.d(TAG, "From: " + from); 
     Log.d(TAG, "Message: " + message); 

     if (from.startsWith("/topics/")) { 
      // message received from some topic. 
     } else { 
      // normal downstream message. 
     } 
     sendNotification(message); 
    } 


    private void sendNotification(String message) { 

     SharedPreferences sharedPreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE); 
     JobStatus = sharedPreferences.getString(JOB_KEY, ""); 


     if (message.contains("#01") && JobStatus.equalsIgnoreCase("true")){ 

      Intent launch = new Intent(Intent.ACTION_MAIN); 
      launch.setClass(getApplicationContext(), NewBookingActivity.class); 
      launch.addCategory(Intent.CATEGORY_LAUNCHER); 
      launch.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
      startActivity(launch); 

      NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); 
      notificationManager.cancel(0); 

     } 
    } 
}

NewBookingActivity.java

public class NewBookingActivity extends AppCompatActivity { 
    private static final String TAG = "NewBookingActivity"; 


    @Override 
    protected void onCreate (Bundle savedInstance){ 
     super.onCreate(savedInstance); 
     setContentView(R.layout.list_job); 

     recyclerView = (RecyclerView) findViewById(R.id.recyclerview); 
     recyclerView.setHasFixedSize(true); 
     recyclerView.setBackgroundColor(ContextCompat.getColor(getApplicationContext(), R.color.red_dark)); 
     layoutManager = new LinearLayoutManager(this); 
     recyclerView.setLayoutManager(layoutManager); 

     singleton = VolleySingleton.getInstance(); 
     requestQueue = singleton.getRequestQueue(); 

     //Initializing job list 
     listJob = new ArrayList<>(); 

     //Enable the activity when lock 
     Window window = getWindow(); 
     window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD 
       | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED 
       | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON 
       | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 

     //Calling method to get data to fetch data 
     getData(); 
     //Alert Sound 
     SoundNotification(); 

    } 



    //This method will get data from the web api 
    private void getData() { 

     StringRequest jsObjRequest = new StringRequest(Request.Method.POST, sendURL, new Response.Listener<String>() { 

      @Override 
      public void onResponse(String response) { 
       parseResponse(response); 
      } 
     }, new Response.ErrorListener() { 

      @Override 
      public void onErrorResponse(VolleyError response) { 
       Log.d(TAG + " Error Response: ", response.toString()); 
      } 

     }){ 
      @Override 
      protected Map<String, String> getParams() throws AuthFailureError { 
       Map<String,String> params = new HashMap<>(); 
       //Adding parameters to request 
       params.put("imei", imei); 

       //returning parameter 
       return params; 
      } 
     }; 
     requestQueue.add(jsObjRequest); 
    } 


    private void parseResponse(String response){ 
     if(response==null || response.length()==0){ 
      return; 
     } 


     try{ 
      JSONObject jObjstats = new JSONObject(response); 

      status = jObjstats.getString(Keys.EndPoint.KEY_RETURN); 

      if (!status.equalsIgnoreCase("success")){ 
       reason = jObjstats.getString(Keys.EndPoint.KEY_RETURN); 
       if (reason.equalsIgnoreCase("No Customers Found")) { 
        int sdk = android.os.Build.VERSION.SDK_INT; 
        if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) { 
         Toast.makeText(this, "No booking at current time", Toast.LENGTH_SHORT).show(); 
        } else { 
         Toast.makeText(this, "No booking at current time", Toast.LENGTH_SHORT).show(); 
        } 
        Toast.makeText(this, "No booking at current time", Toast.LENGTH_SHORT).show(); 

       } 
      } 
      else if(status.equalsIgnoreCase("success")){ 
       order = jObjstats.getString(Keys.EndPoint.KEY_ORDER); 

       JSONArray jArray = new JSONArray(order); 

       for(int i = 0; i<jArray.length(); i++) { 
        Job setJob = new Job(); 
        JSONObject json = null; 


        try { 
         json = jArray.getJSONObject(i); 
         setJob.setBookingRef(json.getString("booking_ref")); 
         setJob.setFromPoint(json.getString("from_point")); 
         setJob.setDestPoint(json.getString("dest_point")); 

        } catch (JSONException e) { 
         Log.i(TAG, "3"); 
         e.printStackTrace(); 
        } 
        listJob.add(setJob); 
       } 
       Log.i(TAG, "4"); 
       //Finally initializing our adapter 
       adapter = new NewBookingAdapter(listJob, this); 

       //Adding adapter to recycler view 
       recyclerView.setAdapter(adapter); 
      } 

     }catch(Exception e) { 
      Log.i(TAG, e.getMessage()); 
     } 

    } 


    private void SoundNotification(){ 
     try { 
      Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); 
      Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notification); 
      r.play(); 
     } 
     catch (Exception e) { 
      e.printStackTrace(); 
     } 
    }

NewBookingFragment.java

@Override 
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState){ 
     Log.i(TAG, "onCreate"); 
     recyclerView = (RecyclerView) inflater.inflate(R.layout.list_job, container, false); 
     recyclerView.setHasFixedSize(true); 
     layoutManager = new LinearLayoutManager(getContext()); 
     recyclerView.setLayoutManager(layoutManager); 

     myApp = ((MyApplication) getActivity().getApplicationContext()); 
     imei = myApp.getImei(); 
     mainURL = myApp.mainURL; 

     taskURL = getResources().getString(R.string.task_pending_job); 
     sendURL = mainURL+taskURL; 

     singleton = VolleySingleton.getInstance(); 
     requestQueue = singleton.getRequestQueue(); 

     //Initializing job list 
     listJob = new ArrayList<>(); 


     return recyclerView; 
    } 

}

NewBookingAdapter

public class NewBookingAdapter extends RecyclerView.Adapter<NewBookingAdapter.ViewHolder> { 


    //Constructor of this class 
    public NewBookingAdapter(List<Job> Job, Context context){ 
     super(); 
     //Getting all 
     this.Job = Job; 
     this.context = context; 
    } 


    public class ViewHolder extends RecyclerView.ViewHolder{ 
     //Views 
     public TextView tvFromPoint, tvDestPoint, tvPickupDate, tvPickupTime, tvServiceType, tvTips; 
     public FloatingActionButton FABserviceType; 
     public AppCompatButton btnDecline, btnAccept; 
     public RelativeLayout mainLayout; 
     public final View mView; 


     //Initializing Views 
     public ViewHolder(View itemView) { 
      super(itemView); 
      mView = itemView; 

      FABserviceType = (FloatingActionButton) itemView.findViewById(R.id.serviceType); 
      tvServiceType = (TextView) itemView.findViewById(R.id.tvServiceType); 
      tvFromPoint = (TextView) itemView.findViewById(R.id.tvFromPoint); 
      tvDestPoint = (TextView) itemView.findViewById(R.id.tvDestPoint); 
      tvPickupDate = (TextView) itemView.findViewById(R.id.tvPickupDate); 
      tvPickupTime = (TextView) itemView.findViewById(R.id.tvPickupTime); 
      tvTips = (TextView) itemView.findViewById(R.id.tvTips); 
      btnAccept = (AppCompatButton) itemView.findViewById(R.id.btnAccept); 
      btnDecline = (AppCompatButton) itemView.findViewById(R.id.btnDecline); 

      mainLayout = (RelativeLayout) itemView.findViewById(R.id.mainLayout); 
     } 
    } 


    @Override 
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
     View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.fragment_new_booking, parent, false); 
     ViewHolder viewHolder = new ViewHolder(v); 

     singleton = VolleySingleton.getInstance(); 
     requestQueue = singleton.getRequestQueue(); 

     myApp = ((MyApplication) context.getApplicationContext()); 
     imei = myApp.getImei(); 
     mainURL = myApp.mainURL; 

     taskURL = context.getResources().getString(R.string.task_pickcustomer); 
     sendURL = mainURL+taskURL; 


     return viewHolder; 
    } 


    @Override 
    public void onBindViewHolder(ViewHolder holder, final int position) { 

     //Getting the particular item from the list 
     final Job job = Job.get(position); 

     //Showing data on the views 
     if(job.getServiceType().equalsIgnoreCase("101") && job.getTaxiTypeID().equalsIgnoreCase("1")){ 
      //--budget icon 
      holder.FABserviceType.setImageResource(R.drawable.car_budget); 
     } 
     else if(job.getServiceType().equalsIgnoreCase("101") && job.getTaxiTypeID().equalsIgnoreCase("0")){ 
      //--teks1m icon 
      holder.FABserviceType.setImageResource(R.drawable.car_teks1m); 
     } 

     holder.tvServiceType.setText(job.getServiceType()); 
     holder.tvFromPoint.setText(job.getFromPoint()); 
     holder.tvDestPoint.setText(job.getDestPoint()); 
     holder.tvPickupDate.setText(job.getPickupDate()); 
     holder.tvPickupTime.setText(job.getPickupTime()); 
     holder.tvTips.setText("Tips : RM "+job.getTips()); 


     holder.btnAccept.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       ErrDialog(job.getBookingRef(), "Are you sure want to ACCEPT this job ?", "Yes", "No", v, position); 
      } 
     }); 

     holder.btnDecline.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       ErrDialog(job.getBookingRef(), "Are you sure want to DECLINE this job ?", "Yes", "No", v, position); 
      } 
     }); 

    } 


    @Override 
    public int getItemCount() { 
     return Job.size(); 
    } 



    private void AcceptBooking(final String bookingRef, final int position){ 
     StringRequest jsObjRequest = new StringRequest(Request.Method.POST, sendURL, new Response.Listener<String>() { 
      @Override 
      public void onResponse(String response) { 
       parseResponse(response, position); 
      } 
     }, new Response.ErrorListener() { 
      @Override 
      public void onErrorResponse(VolleyError error) { 
       Log.i(TAG, "Volley "+error.toString()); 
      } 
     }){ 
      @Override 
      protected Map<String, String> getParams() throws AuthFailureError { 
       Map<String,String> params = new HashMap<>(); 
       //Adding parameters to request 
       params.put("imei", imei); 
       params.put("booking_ref", bookingRef); 

       //returning parameter 
       return params; 
      } 
     }; 

     //requestQueue = Volley.newRequestQueue(context); 
     requestQueue.add(jsObjRequest); 
    } 


    private void parseResponse(String response, int position){ 
     if(response==null || response.length()==0){ 
      return; 
     } 

     try { 

      JSONObject jObjstats = new JSONObject(response); 

      status = jObjstats.getString(Keys.EndPoint.KEY_RETURN); 

      if (status.equalsIgnoreCase("error")){ 
       error = jObjstats.getString(Keys.EndPoint.KEY_REASON); 
      } 

      if (status.equalsIgnoreCase("success")){ //success == active 
       Toast.makeText(context, "Congratulations, you get the job \n Please call customer", Toast.LENGTH_LONG).show(); 
       Intent intent = new Intent(context, MainActivity.class); 
       context.startActivity(intent); 

      } 
      else{ 
       Toast.makeText(context, "Didnt get the job", Toast.LENGTH_LONG).show(); 
       Log.i(TAG, "Didnt get the job:" + status); 
       removeAt(position); 
      } 
      Log.i(TAG, "Login : " +status+ " " +position); 

     } 
     catch (Exception ex){ 
      Log.i(TAG, "Catch Error:" +ex); 
     } 
    } 



    public void removeAt(int position) { 
     if(Job.size() == 1 && position == 0) { 
      System.exit(0); 
     } 
     else { 
      Job.remove(position); 
      notifyItemRemoved(position); 
      notifyItemRangeChanged(position, Job.size()); 
     } 
    } 


    private void SavePreferences(String key, String value){ 
     sharedPreferences = context.getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE); 

     SharedPreferences.Editor editor = sharedPreferences.edit(); 
     editor.putString(key, value); 
     editor.commit(); 
    } 
}

来源

2016-03-15 Nizzam

在MyGcmListenerService，检查活动已经然后使用BroadCastReceiver更新RecyclerView;否则发送通知开始新的活动。

@Override 
public void onMessageReceived(String from, Bundle data) { 
    String message = data.getString("message"); 
    Log.d(TAG, "From: " + from); 
    Log.d(TAG, "Message: " + message); 

    if (from.startsWith("/topics/")) { 
     // message received from some topic. 
    } else { 
     // normal downstream message. 
    } 

    // Here, check if activity is already open 
    ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE); 
    List<RunningTaskInfo> taskInfo = am.getRunningTasks(1); 
    ComponentName componentInfo = taskInfo.get(0).topActivity; 
    if(componentInfo.getPackageName().equalsIgnoreCase("com.yourpackagename")) 
    { 
     //Activity is Running 
     Send a broadcast with the intent-filter which you register in your activity 
     where you want to have the updates 
    } 
    else 
    { 
     //Activity Not Running 
     sendNotification(message); 
    } 

}

检查this tutorial实施BroadCastReceiver。

例如：

MyGcmListenerService.java

public class MyGcmListenerService extends GcmListenerService 
{ 
    ... 

    @Override 
    public void onMessageReceived(String from, Bundle data) 
    { 
     ... 

     // Here, check if activity is already open 
     ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE); 
     List<RunningTaskInfo> taskInfo = am.getRunningTasks(1); 
     ComponentName componentInfo = taskInfo.get(0).topActivity; 
     if(componentInfo.getPackageName().equalsIgnoreCase("com.yourpackagename")) 
     { 
      /* Activity is Running 
       Send a broadcast with the intent-filter which you register in your activity 
       where you want to have the updates 
      */ 
      Intent intent = new Intent("your_package_name.USER_ACTION"); 
      // Add data in intent 
      sendBroadcast(intnet); 
     } 
     else 
     { 
      //Activity Not Running 
      sendNotification(message); 
     } 
    } 
}

NewBookingFragment.java

public class NewBookingFragment extends Fragment 
{ 
    ... 

    MyReceiver myReceiver; 
    IntentFilter intentFilter; 

    @Override 
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) 
    { 
     ... 

     myReceiver = new MyReceiver(); 
     intentFilter = new IntentFilter("your_package_name.USER_ACTION"); 

     return recyclerView; 
    } 

    @Override 
    public void onResume() 
    { 
     super.onResume(); 
     getActivity().registerReceiver(myReceiver, intentFilter); 
    } 

    @Override 
    public void onPause() 
    { 
     super.onPause(); 
     getActivity().unregisterReceiver(myReceiver); 
    } 

    public class MyReceiver extends BroadcastReceiver 
    { 
     @Override 
     public void onReceive(Context context, Intent intent) 
     { 
      // Get the data from intent and add into the adapter 
     } 
    } 
}

而在你的manifest.xml添加这里面application标签

<receiver android:name=".NewBookingFragment$MyReceiver" > 
    <intent-filter> 
     <action android:name="your_package_name.USER_ACTION" /> 
    </intent-filter> 
</receiver>

来源

2016-03-15 09:18:31

请您详细说明意图，因为我仍然需要致电活动权利？ – Nizzam

@SendraFalvia如果已经运行，不需要调用'startActivity（）'。你将简单地创建一个intent，把数据放入它并通过'sendBroadcast（）'发送这个intent。正如我们在Fragment的课上写了BroadCastReceiver一样，这里会收到广播的意图。然后从意图中提取数据，将其添加到适配器并调用notifyDataSetChanged（）。我已经更新了我的答案...检查出来。 –

我没有这么做:( – Nizzam

当GCM监听器触发时，只加载回收站视图

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