[TIMOB-20291] Android: Push Notification Payload Null

   var win = Ti.UI.createWindow({
       layout: 'vertical',
       backgroundColor: 'white'
   });
   
   var CloudPush = require('ti.cloudpush');
   
   var code = CloudPush.isGooglePlayServicesAvailable();
   if (code != CloudPush.SUCCESS) {
       alert ("Google Play Services is not installed/updated/available");
   }
   
   CloudPush.addEventListener('callback', function (evt) {
       alert(evt.payload);
   });
   CloudPush.addEventListener('trayClickLaunchedApp', function (evt) {
       Ti.API.info('Tray Click Launched App (app was not running)');
   });
   CloudPush.addEventListener('trayClickFocusedApp', function (evt) {
       Ti.API.info('Tray Click Focused App (app was already running)');
   });
   
   /*
    * Create a label to show Push type
    */
   var pushTypeLabel = Ti.UI.createLabel({
       top: '10dp', width: '320dp', height: '25dp',
       textAlign: 'center', font: { fontSize:14}, color: 'black',
       text: 'Push Type: ' + CloudPush.pushType
   });
   win.add(pushTypeLabel);
   
   /*
    * Create a label to show device token on screen
    */
   var deviceTokenLabel = Ti.UI.createLabel({
       top: '10dp', width: '320dp', height: (CloudPush.pushType=='gcm'?'150dp':'40dp'),
       font: { fontSize:14}, color: 'black',
       text: 'Device Token'
   });
   win.add(deviceTokenLabel);
   
   CloudPush.retrieveDeviceToken({
       success: deviceTokenSuccess,
       error: deviceTokenError
   });
   
   function deviceTokenSuccess(e) {
       Ti.API.info('Device Token: ' + e.deviceToken);
       deviceTokenLabel.text = 'Device Token:' + e.deviceToken;
       enablePush.enabled = true;
   }
   
   function deviceTokenError(e) {
       alert('Failed to register for push! ' + e.error);
       deviceTokenLabel.text = 'Failed to get device token.';
   }
   
   /*
    Push can be enabled or disabled.
    */
   var enablePush = Ti.UI.createButton({
       top: '10dp', width: '320dp', height: '40dp',
       enabled: false
   });
   enablePush.addEventListener('click', function () {
       enablePush.title = CloudPush.enabled ? 'Disabling...' : 'Enabling...';
       CloudPush.enabled = !CloudPush.enabled;
       // NOTE: Push.enabled takes a moment to update after you change its value.
       setTimeout(syncButtons, 500);
   });
   win.add(enablePush);
   
   /*
    Whether or not to show a tray notification.
    */
   var showTrayNotification = Ti.UI.createButton({
       top: '10dp', width: '320dp', height: '40dp'
   });
   showTrayNotification.addEventListener('click', function () {
       CloudPush.showTrayNotification = !CloudPush.showTrayNotification;
       syncButtons();
   });
   win.add(showTrayNotification);
   
   /*
    Whether or not clicking a tray notification focuses the app.
    */
   var showAppOnTrayClick = Ti.UI.createButton({
       top: '10dp', width: '320dp', height: '40dp'
   });
   showAppOnTrayClick.addEventListener('click', function () {
       CloudPush.showAppOnTrayClick = !CloudPush.showAppOnTrayClick;
       syncButtons();
   });
   win.add(showAppOnTrayClick);
   
   /*
    Whether or not tray notifications are shown when the app is in the foreground.
    */
   var showTrayNotificationsWhenFocused = Ti.UI.createButton({
       top: '10dp', width: '320dp', height: '40dp'
   });
   showTrayNotificationsWhenFocused.addEventListener('click', function () {
       CloudPush.showTrayNotificationsWhenFocused = !CloudPush.showTrayNotificationsWhenFocused;
       syncButtons();
   });
   win.add(showTrayNotificationsWhenFocused);
   
   /*
    Whether or not receiving a push immediately brings the application to the foreground.
    */
   var focusAppOnPush = Ti.UI.createButton({
       top: '10dp', width: '320dp', height: '40dp'
   });
   focusAppOnPush.addEventListener('click', function () {
       CloudPush.focusAppOnPush = !CloudPush.focusAppOnPush;
       syncButtons();
   });
   win.add(focusAppOnPush);
   
   /*
    Trigger callbacks together or one by one when multiple push notifications come.
    */
   var singleCallback = Ti.UI.createButton({
       top: '10dp', width: '320dp', height: '40dp'
   });
   singleCallback.addEventListener('click', function () {
       CloudPush.singleCallback = !CloudPush.singleCallback;
       syncButtons();
   });
   win.add(singleCallback);
   
   function syncButtons() {
       enablePush.title = CloudPush.enabled ? 'Push Enabled' : 'Push Disabled';
       showAppOnTrayClick.title = CloudPush.showAppOnTrayClick ? 'Tray Click Shows App' : 'Tray Click Does Nothing';
       showTrayNotification.title = CloudPush.showTrayNotification ? 'Show in Tray' : 'Do Not Show in Tray';
       focusAppOnPush.title = CloudPush.focusAppOnPush ? 'Push Focuses App' : 'Push Doesn\'t Focus App';
       showTrayNotificationsWhenFocused.title = CloudPush.showTrayNotificationsWhenFocused ? 'Show Trays when Focused' : 'Hide Trays when Focused';
       singleCallback.title = CloudPush.singleCallback ? 'Callbacks trigger one by one' : 'Callbacks trigger together';
   }
   
   syncButtons();
   win.open();