Android Open Source - nwcloud-androidgcm-app Main Activity

• Back to App/cloud  ↑

From Project

Back to project page nwcloud-androidgcm-app.

License

The source code is released under:

Apache License

Java Source Code

package org.sapmentors.nwcloud.gcm;
//from w ww . ja v a  2  s  .  c o m

import java.util.ArrayList;
import java.util.List;

import org.sapmentors.nwcloud.gcm.backend.MobileDevice;
import org.sapmentors.nwcloud.gcm.backend.NWCloudBackend;
import org.sapmentors.nwcloud.gcm.backend.PushMessageExternal;
import org.sapmentors.nwcloud.gcm.model.PushMessageResponse;
import org.sapmentors.nwcloud.gcm.util.AndroidUtils;

import android.app.Activity;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Toast;

/**
 * Main activity for the android app
 * 
 * On startup it registers the device for receiving GCM push messages
 * It also fetches all the devices from the NW cloud backend and provides
 * and interface for sending the users a message.
 * 
 * The message sent is sent to NW Cloud through a REST interface, which again
 * uses the GCM server library to send it via Google to the android device.
 * 
 * See NWCloudBackend class for how to swap between local and nwcloud backend
 * 
 * @author dagfinn.parnas
 *
 */
public class MainActivity extends Activity {
  protected static final String LOG_PREFIX = "NWCLOUD-GCM";

  Spinner spinnerEmailTo; 
  Button buttonSend;
  EditText editMessage; 
  ArrayAdapter<String> spinnerAdapter;
  
  
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        //Register this device to Google Cloud Messaging for our API
        //Will also subsequently trigger storage of GCM registration key
        //for this devices in the NWCloud backend
        GCMIntentService.register(this);
        
        setContentView(R.layout.activity_main);
        
        //components in the view
        spinnerEmailTo = (Spinner)findViewById(R.id.spinner_emailto);
        buttonSend = (Button)findViewById(R.id.button_send);
        editMessage=(EditText)findViewById(R.id.edit_message);

        
      spinnerAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item);
      spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinnerEmailTo.setAdapter(spinnerAdapter);
        
        actionRefreshRecipientEmails();
    }
    
    public void actionRefreshRecipientEmails(){
      //disable the send button untill the recipient devices have been fetched
        buttonSend.setEnabled(false);
        
        spinnerAdapter.clear();
        spinnerAdapter.add("Please wait... fetching recipients");
        spinnerAdapter.notifyDataSetChanged();
        
        NWCloudGetDevicesTask taskGetDevices = new NWCloudGetDevicesTask();
        taskGetDevices.execute();
    }
    
    public void actionRemoveMyDevice(){
        NWCloudRemoveMyDeviceTask taskGetDevices = new NWCloudRemoveMyDeviceTask(this);
        taskGetDevices.execute();
    }
    
    private void postDeviceRemove(boolean successful){
      if(successful){
        informUserAboutMessage("Will refetch recipients from sapnwcloud backend");
        actionRefreshRecipientEmails();
      }
    }
    
    
    /**
     * Populate the spinner with emails from registered
     * android devices (from NWCloud backend)
     * 
     * @param devices
     */
    private void populateSpinner(MobileDevice[] devices){
      spinnerAdapter.clear();
      if(devices!=null){
          spinnerAdapter.clear();
          for (int i = 0; i < devices.length; i++) {
        MobileDevice device =devices[i];
        spinnerAdapter.add(device.getEmail());    
      }
          buttonSend.setEnabled(true);
        }else {
          spinnerAdapter.add("No devices registered");
          informUserAboutMessage("No devices registered in backend yet. Try again later");
          buttonSend.setEnabled(false);
        }
      spinnerAdapter.notifyDataSetChanged();
    }


    
    public void actionSendMessage(View view){
      informUserAboutMessage("Attempting to send message");
      
      PushMessageExternal pushMessageExternal = new PushMessageExternal();
      
      pushMessageExternal.setMessage(editMessage.getText().toString());
      pushMessageExternal.setEmailFrom(AndroidUtils.getPrimaryAccountEmail(this));
      
      ArrayList<String> arEmailTo = new ArrayList<String>(10);
      String strSelectedEmailTo = (String)spinnerEmailTo.getSelectedItem();
      arEmailTo.add(strSelectedEmailTo);
      
      pushMessageExternal.setEmailTo(arEmailTo.toArray(new String[]{}));  
      
      NWCloudSendMessageTask taskSendMessage = new NWCloudSendMessageTask();
      taskSendMessage.execute(pushMessageExternal);
    }
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
    
  @Override
  public boolean onMenuItemSelected(int featureId, MenuItem item) {
    switch (item.getItemId()) {
    case R.id.menu_refresh_recipient:
      informUserAboutMessage("Will refetch recipients from sapnwcloud backend");
      actionRefreshRecipientEmails();
      return true;
    case R.id.menu_delete_device:
      informUserAboutMessage("Will delete this device's information from sapnwcloud backend");
      actionRemoveMyDevice();
      return true;
    default:
      return super.onMenuItemSelected(featureId, item);
    }

  }
    
    
  public void informUserAboutMessage(String msg) {
    Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
    
  }
  
  public class NWCloudGetDevicesTask extends AsyncTask<Object, Object, MobileDevice[]> {
    
    public NWCloudGetDevicesTask (){
    }
    
    @Override
    protected MobileDevice[] doInBackground(Object... arg0){
      Log.d(LOG_PREFIX, "Before getting android devices from backend");
      MobileDevice[] devices = NWCloudBackend.getRegisteredDevices();
      return devices;
    }

    @Override
    protected void onPostExecute(MobileDevice[] result) {
      super.onPostExecute(result);
      populateSpinner(result);
    }
  }
  
  public class NWCloudSendMessageTask extends AsyncTask<PushMessageExternal, Object, PushMessageResponse> {
    
    public NWCloudSendMessageTask (){
    }
    
    @Override
    protected PushMessageResponse doInBackground(PushMessageExternal... arguments){
      PushMessageExternal pushMessage= arguments[0];
      Log.d(LOG_PREFIX, "About to send message to NWCloud backend. Msg;" + pushMessage.getMessage());
      PushMessageResponse pushmessageResponse = NWCloudBackend.sendMessage(pushMessage);
      return pushmessageResponse;
    }

    @Override
    protected void onPostExecute(PushMessageResponse pushmessageResponse) {
      informUserAboutMessage("Push message sent. Response code is " +pushmessageResponse.getResponseCode() +" ("+pushmessageResponse.getResponseMessage()+")");
    }
  }
  
  public class NWCloudRemoveMyDeviceTask extends AsyncTask<Void, Void, Boolean> {
    Context context; 
    public NWCloudRemoveMyDeviceTask (Context context){
      this.context=context;
    }
    
    @Override
    protected Boolean doInBackground(Void... arg0){
      Log.d(LOG_PREFIX, "Before getting android devices from backend");
      return Boolean.valueOf(NWCloudBackend.removeMyDevice(context));
    }

    @Override
    protected void onPostExecute(Boolean successful ) {
      if(successful.booleanValue()){
        informUserAboutMessage("This device was removed from NWCloud backend.\n(will be automatically re-added if you restart the app");
      }else {
        informUserAboutMessage("Failed to remove this device from NWCloud backend.\n(maybe it don't exist there)");
      }
      postDeviceRemove(successful.booleanValue());
      
    }
  }
}

Java Source Code List

• Back to App/cloud  ↑