Complex MIDP Application Manager

Introduction

This example demonstrates the MIDP 1.0 compatible features of the Lightfoot SDK. The application manager allows you to download a JAR file to the board and run the midlets located in that JAR file. This example allows you to use an LCD display or a remote X11 display. Initially you should build for a remote X11 display as you can then use the keyboard to enter a URL to download a JAR file to the board.

Building the example

Change directory to the application manager example
    cd %LF_HOME%\examples\ComplexMIDletManager

Rebuild the application to either use a remote X11 display
    lfmake clean all

or to use a display board if you have one
    lfmake clean all USE_LCD=1

Running the example

If you don't have a display board, the demo can be built to use an X11 display as described above. Make sure this is running and that it will accept remote connections (xhost +) before downloading the application.

To run the example on the board
    lfdownload AppMgr.bin

You then have a number of options. The best approach is to download a JAR file to the board. The MIDPman.jar provided with this example can be used. Make sure that you place this where a web server can find it and enter the URL for it in the Lightfoot application. The exact location this goes is down to you, but the shorter the path, the easier it will be to enter the unique URL.

Once the JAR file has been downloaded, you can then run it or save it in flash using the Flash Menu option of the application. If you have an LCD display it is a good idea to save the JAR file in flash, then rebuild the application to use the LCD and run it locally. The keyboard driver provided with the LCD is too restricted to allow efficient text input!

Features

This example demonstrates the following SDK features.