Save file iOS and Android with Appcelerator Titanium Mobile SDK (http://timoa.com/en/2012/07/appcelerator-nativepath-on-ios-and-android/)

save_file.js

// OS
if(Ti.Platform.osname === 'iPhone' || Ti.Platform.osname === 'iPad') {
  var ios = true;
}
 
/**
 * Save file function
 *
 * @file: Binary file (Blob)
 * @filename: Name of file (String)
 *
 */
function saveFile(_args) {
   
  // Test if External Storage (Android only)
  if(Ti.Filesystem.isExternalStoragePresent()){
    var file = Ti.Filesystem.getFile(Ti.Filesystem.externalStorageDirectory, _args.filename);
  }
 
  // No SD or iOS
  else {
    var file = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, _args.filename);
  }
   
  // Save file
  file.write(_args.file);
   
  // Debug: Test if file exist now
  if(file.exists) {
    Ti.API.info('[saveFile] Saved: YES! (' + file.nativePath + ')');
  } else {
    Ti.API.info('[saveFile] Saved: NO!');
  }
 
  // Return full path of file
  if(ios && Ti.version <= '1.8.2') {
    var iosPath = Ti.Filesystem.applicationDataDirectory + _args.filename;
    iosPath = iosPath.replace('file://','app://');
     
    return iosPath;
  } 
  else {
    return file.nativePath;
  }
};

view.js

// To use, simply call the function in this way :

var pathToImage = saveFile({
  file: ***blob***,
  filename: 'image.png'
});

Thanks a lot for posting this :)

Thanks for this code snippet! It's really helpful =)