使用callbackContext內廣播接收器

Question

我有一個科爾多瓦插件，掃描條形碼，使用一個名爲「com.hyipc.core.service.barcode.BarcodeService2D」服務。這是通過向廣播接收器註冊接收器完成的。

掃描過程運行成功，但我想送回到我的科爾多瓦的應用程序掃描結果，我所看見的使用callbackContext.success(strBarcode)完成。問題是我不能在BarcodeReceiverClass中使用它。有什麼方法可以將onReceive中的數據發送回我的應用程序？

public class Scanner extends CordovaPlugin { 

    private BroadcastReceiver mReceiver = new BarcodeReceiver(); 
    private Intent intentService = new Intent("com.hyipc.core.service.barcode.BarcodeService2D"); 
    public static final String ACTION_BARCODE_SERVICE_BROADCAST = "action_barcode_broadcast"; 
    public static final String KEY_BARCODE_STR = "key_barcode_string"; 
    private String strBarcode = ""; 

    @Override 
    public boolean execute(String action, JSONArray data, CallbackContext callbackContext) throws JSONException { 

     if (action.equals("scan")) { 
      scan(); 
      return true; 
     } else { 
      return false; 
    } 
} 

    public void scan() { 
     IntentFilter filter = new IntentFilter(); 
     filter.addAction(ACTION_BARCODE_SERVICE_BROADCAST); 

     cordova.getActivity().startService(intentService); 
     cordova.getActivity().registerReceiver(mReceiver, filter); 
    } 

    public class BarcodeReceiver extends BroadcastReceiver { 
     public void onReceive(Context ctx, Intent intent) { 
      if (intent.getAction().equals(ACTION_BARCODE_SERVICE_BROADCAST)) { 
       strBarcode = intent.getExtras().getString(KEY_BARCODE_STR); 
       callbackContext.success(strBarcode); 
      } 
     } 
    } 
} 

Answer 1

您需要回調上下文參數傳遞給你BarcodeReceiver類：

public class Scanner extends CordovaPlugin { 
    .... 
    private BroadcastReceiver mReceiver = null; 

    @Override 
    public boolean execute(String action, JSONArray data, CallbackContext callbackContext) throws JSONException { 
     .... 
     mReceiver = new BarcodeReceiver(callbackContext); 
     .... 
    } 
    .... 
} 

public class BarcodeReceiver extends BroadcastReceiver { 

    private CallbackContext callbackContext; 

    public BarcodeReceiver (CallbackContext callbackContext) { 
     this.callbackContext = callbackContext; 
    } 

    public void onReceive(Context ctx, Intent intent) { 
     if (intent.getAction().equals(ACTION_BARCODE_SERVICE_BROADCAST)) { 
      strBarcode = intent.getExtras().getString(KEY_BARCODE_STR); 
      callbackContext.success(strBarcode); 
     } 
    } 
}