title: java.lang.InstantiationException: class has no zero argument constructor error
body: <p>I've read the other threads that exist but none of them have been able to solve my problem.</p>
  
  <p>I'm building an app which caches messages when there's no internet and stores them to a Database. The idea is when there is network connected, it pulls the data from the DB and sends message in the background - for which I made a Broadcast Receiver and made it receive "android.net.conn.CONNECTIVITY_CHANGE" broadcast - which then makes the app POST the message to the server</p>
  
  <p>The error I get when the Network changes : </p>
  
  <pre><code>java.lang.RuntimeException: Unable to instantiate receiver com.tanvirsingh.fragmentsdemo.NetworkChangeReceiver: java.lang.InstantiationException: java.lang.Class&lt;com.tanvirsingh.fragmentsdemo.NetworkChangeReceiver&gt; has no zero argument constructor
  </code></pre>
  
  <p>The Broadcast Receiver Class (NetworkChangeReceiver.java):</p>
  
  <pre><code>public class NetworkChangeReceiver extends BroadcastReceiver{
  
      private static final String TAGNCR = "JSON";
  
      private final Handler handler; // Handler used to execute code on the UI thread
  
      public NetworkChangeReceiver(Handler handler) {
          this.handler = handler;
      }
  
      DataBaseHelper myDB;
      final String MESSAGES_ENDPOINT = ""; 
  
  
  
      @Override
      public void onReceive(Context context, Intent intent) {
  
          int[] type = {ConnectivityManager.TYPE_MOBILE, ConnectivityManager.TYPE_WIFI};
          if (isNetworkAvailable(context) == true){
              //check for messages to be sent
              myDB = new DataBaseHelper(context);
  
              Cursor res = myDB.getAllData();
              if (res.getCount() == 0)
              {
                  Log.d(TAG,"No data found");
                  return;
  
              }
  
              StringBuffer buffer = new StringBuffer();
              while( res.moveToNext()){
                  buffer.append("Params: "  + res.getString(0)+ "\n");
              }
  
              Log.d(TAGNCR,buffer.toString());
  
              return;
  
          } else {
  
          }
      }
  
      public void SendMessageFromDB(RequestParams param){
  
          AsyncHttpClient client = new AsyncHttpClient();
  
          //pusher
          PusherOptions options = new PusherOptions();
          options.setCluster("");
          Pusher pusher = new Pusher("", options);
  
          Channel channel = pusher.subscribe("my-channel");
  
          channel.bind("my-event", new SubscriptionEventListener() {
              @Override
              public void onEvent(String channelName, String eventName, final String data) {
                  System.out.println(data);
              }
          });
  
          pusher.connect();
  
          final RequestParams params = param;
  
          client.post(MESSAGES_ENDPOINT + "/messages", params, new JsonHttpResponseHandler() {
  
                  @Override
                  public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
                      handler.post(new Runnable() {
                          @Override
                          public void run() {
                              Log.d(TAG, params.toString());
                          }
                      });
                  }
  
                  @Override
                  public void onFailure(int statusCode, Header[] headers, String responseString, Throwable throwable) {
                      //Toast.makeText(, "Something went wrong :(", Toast.LENGTH_LONG).show();
                  }
              });
  
              return;
  
      }
  
  
  
      //function to check if internet is available
      private static boolean isNetworkAvailable(Context context){
          try{
              ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
              NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
              if (activeNetwork != null) { // connected to the internet and not in Airplane mode
                  if (activeNetwork.getType() == ConnectivityManager.TYPE_WIFI) {
                      // connected to wifi
                      Toast.makeText(context, activeNetwork.getTypeName() + " Connected", Toast.LENGTH_SHORT).show();
                      return true;
                  } else if (activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE) {
                      // connected to the mobile data
                      Toast.makeText(context, activeNetwork.getTypeName() + " Connected", Toast.LENGTH_SHORT).show();
                      return true;
                  }
              } else {
                  // not connected to the internet
                  Toast.makeText(context, "No internet connection available!", Toast.LENGTH_SHORT).show();
  
              }
          } catch (Exception e){
              return false;
          }
          return false;
      }
  }
  </code></pre>
  
  <p>Stack Trace as requested:</p>
  
  <pre><code>04-05 16:36:29.828 3420-3420/com.tanvirsingh.fragmentsdemo E/AndroidRuntime: FATAL EXCEPTION: main
                                                                               Process: com.tanvirsingh.fragmentsdemo, PID: 3420
                                                                               Theme: themes:{default=overlay:system, iconPack:com.baranovgroup.nstyle, fontPkg:com.baranovgroup.nstyle, com.android.systemui=overlay:com.baranovgroup.nstyle, com.android.systemui.navbar=overlay:system}
                                                                               java.lang.RuntimeException: Unable to instantiate receiver com.tanvirsingh.fragmentsdemo.NetworkChangeReceiver: java.lang.InstantiationException: java.lang.Class&lt;com.tanvirsingh.fragmentsdemo.NetworkChangeReceiver&gt; has no zero argument constructor
                                                                                   at android.app.ActivityThread.handleReceiver(ActivityThread.java:2752)
                                                                                   at android.app.ActivityThread.-wrap14(ActivityThread.java)
                                                                                   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1440)
                                                                                   at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                                   at android.os.Looper.loop(Looper.java:148)
                                                                                   at android.app.ActivityThread.main(ActivityThread.java:5471)
                                                                                   at java.lang.reflect.Method.invoke(Native Method)
                                                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                                                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
                                                                                   at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:102)
                                                                                Caused by: java.lang.InstantiationException: java.lang.Class&lt;com.tanvirsingh.fragmentsdemo.NetworkChangeReceiver&gt; has no zero argument constructor
                                                                                   at java.lang.Class.newInstance(Native Method)
                                                                                   at android.app.ActivityThread.handleReceiver(ActivityThread.java:2747)
                                                                                   at android.app.ActivityThread.-wrap14(ActivityThread.java) 
                                                                                   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1440) 
                                                                                   at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                                   at android.os.Looper.loop(Looper.java:148) 
                                                                                   at android.app.ActivityThread.main(ActivityThread.java:5471) 
                                                                                   at java.lang.reflect.Method.invoke(Native Method) 
                                                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                                                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
                                                                                   at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:102) 
  </code></pre>