Adobe Illustrator script for exporting icons to iOS and Android in all supported sizes.

SaveiOSAndroid.jsx

/**
* Remixer 1: @herkulano (http://www.herkulano.com)
* Remixer 2: @hotappsfactory (http://www.hotappsfactory.com)
* Thanks to: Niels Bosma (niels.bosma@motorola.com)
* Remixer 3: @nomisum (mixing some Matthew Ericson in)
**/

// script takes @2x as basis. edit the 'saveToRes' lines for other scalings


var destFolder, sourceFolder, files, fileType, sourceDoc, targetFile, svgSaveOpts;

// Select the source folder.
sourceFolder = Folder.selectDialog( 'Select the folder with AI files you want to export for iOS + Android. Export will be in /_export of same dir.', '~' );

// If a valid folder is selected
if ( sourceFolder != null )
{
  files = new Array();

	// Get all files matching the pattern
	files = sourceFolder.getFiles("*.ai");

	if ( files.length > 0 )
	{
		// Get the destination to save the files - fixed same dir is faster than choosing here!
		destFolder = sourceFolder;
		for ( i = 0; i < files.length; i++ )
		{
			sourceDoc = app.open(files[i]); // returns the document object

			var document = app.activeDocument;


			if (document && destFolder) {
				var documentName = document.name.replace(".ai","");

				saveToRes(50, documentName, "", "iOS", true);
				saveToRes(100, documentName, "@2x", "iOS", true);
				saveToRes(150, documentName, "@3x", "iOS", true);

				saveToRes(50, documentName, "", "drawable-mdpi", true);
				saveToRes(75, documentName, "", "drawable-hdpi", true);
				saveToRes(100, documentName, "", "drawable-xhdpi", true);
				saveToRes(150, documentName, "", "drawable-xxhdpi", true);
				saveToRes(200, documentName, "", "drawable-xxxhdpi", true);
			}

			sourceDoc.close(SaveOptions.DONOTSAVECHANGES);
		}
		alert( 'Files are saved as PNG in ' + destFolder );
	}
	else
	{
		alert( 'No Files found, so sorry bud :(');

	}
}

/**
* Scale and export file suffixed by densitySuffix, in a specific folder named folderName
*/
function saveToRes(scaleTo, preffix, densitySuffix, folderName, lowerCase) {
	var i, ab, file, options;

	var myFolder = new Folder(destFolder.absoluteURI + "/_export/" + folderName);
	if(!myFolder.exists) myFolder.create();

	for (i = document.artboards.length - 1; i >= 0; i--) {
		document.artboards.setActiveArtboardIndex(i);
		ab = document.artboards[i];

		var fileName = preffix + ab.name;

		if(lowerCase){
			var fileNameLowerCase = "";

			for (var j = 0; j < fileName.length; j++) {
				if(isUpperCase(fileName.charAt(j))){
					if(j > 0){
						fileNameLowerCase += "_";
					}
					 fileNameLowerCase += fileName.charAt(j).toLowerCase();
				}
				else{
					fileNameLowerCase += fileName.charAt(j);
				}
			}
			fileName = fileNameLowerCase;
		}

		file = new File(myFolder.fsName + "/" + fileName + densitySuffix + ".png");

		options = new ExportOptionsPNG24();
		options.antiAliasing = true;
		options.transparency = true;
		options.artBoardClipping = true;
		options.verticalScale = scaleTo;
		options.horizontalScale = scaleTo;

		document.exportFile(file, ExportType.PNG24, options);
	}
}

function isUpperCase(myString) {
      return (myString == myString.toUpperCase());
}