Resize images from the Image Gallery

ResizingImages.js

// testend on iOS


/*
Copyright 2011 Pedro Enrique
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 
 http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.

*/

var win = Ti.UI.createWindow();


win.open();

// the desired image widths
var imageSizes = [1200,800,600,200];

// open the photo gallery
Titanium.Media.openPhotoGallery({

// if success:
	success:function(event){
		// this is the image chosen
		var myImage = event.media;
		if(event.mediaType == Ti.Media.MEDIA_TYPE_PHOTO){
			// let's loop through that array
			for(var i = 0; i < imageSizes.length; i++){
				// create a new file
				var file = Titanium.Filesystem.getFile(Titanium.Filesystem.applicationDataDirectory, 'image'+i+'.png');
				// get the width from the array
				var newWidth = imageSizes[i];
				// write the file as toImage()
				file.write(
					Ti.UI.createImageView({
						image:myImage, //file name
						width:newWidth, // file new width
						height:(newWidth/myImage.width)*myImage.height // some math to get the height
					}).toImage()
				);	
				// done, loop again
			}		
		} else {

		}
	},
	cancel:function(){

	},
	error:function(error){
	},
	mediaTypes:[Ti.Media.MEDIA_TYPE_PHOTO]
});