graph designing in android

http://wptrafficanalyzer.in/blog/android-drawing-line-chart-using-androidplot/

chart designing in android

http://wptrafficanalyzer.in/blog/android-dynamic-chart-using-achartengine/

pic an image from galary in android

http://viralpatel.net/blogs/pick-image-from-galary-android-app/

downlodingfile from server in android

http://www.coderzheaven.com/2012/04/29/download-file-android-device-remote-server-custom-progressbar-showing-progress/