//Define the current window
var myWin = Titanium.UI.currentWindow;
 
//Define the button to activate camera
var cameraBtn = Ti.UI.createButton({
   title   : 'Click to activate Camera',
   top    : 10      //Set the button position on the screen
});
 
cameraBtn.addEventListener('click', function(){
   
   //Activate camera
   Titanium.Media.showCamera({
success : function(event) {
              
              //Holds the captured image
          var capturedImg= event.media;
 
               // Condition to check the selected media
              if(event.mediaType == Ti.Media.MEDIA_TYPE_PHOTO) {
 
//Define an image view with captured image
                   var imgView = Titanium.UI.createImageView({
                   left       : 10,
                   width    : 250,
                   height   : 250,
                   image   : capturedImg   //Set captured image
});
 
                        //Add the image to window for displaying
myWin.add(imgView);
}
},
cancel : function() {
//While cancellation of the process
},
error : function(error) {
               // If any error occurs during the process
 
}
});