Small Android home screen widget

I would like to have an Android home screen widget which is able to show pictures from a specified folder at an adjustable interval. The layout: The widget needs to have an ImageView with 3 buttons. Button 1: Play button Button 2: Stop Button Button 3: Settings button. The settings button opens a new screen where the user can select an interval in seconds and change a directory folder for pictures. Please check my attachments so you have an idea what it should look like. Logic: -On start-up 4 pictures should already be in the /raw folder of the application. The first picture is shown when the widget is launched. (see homescreen picture). -After pressing the play button, the looping through the pictures of the /raw folder starts, and every time the interval was reached, the next picture is shown. -On start-up, the default interval is 5 seconds. -On opening of the settings screen, the current interval must be shown (not default of 5 seconds). The user should be able to change this interval to his own settings. -On clicking the "source" button, the user is able to select a folder on the device. The user has no third party file browsers installed, so use what you have. -After changing the settings and saving them, the picture changes at the selected interval, and the ImageView only shows the pictures from the folder the user selected (that is IF the user actually selected a folder, else show pictures from /raw). Additional requirements: -Make sure exception handling is covered for all possible actions e.g. User sets a non-numeric interval, or user selects a folder which doesn't contain any pictures. -The code must have understandable javadoc -Give all buttons, variables etcs meaningful names (So id for Button 1 = "playButton") -Min. SDK 7, target SDK 14 -App name PhotoWidget -I need the folder with all code, ready for me to import into IDE.