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settings specify TCP/IP port numbers used for connecting to a running VM with the debugger and various logging levels and options. The default settings should be just fine. 2 describes how to use the DDMS. Launch This section permits optional emulator switches to be sent to the emulator upon startup. An example of this might be the wipe-data option, which cleans the persistent file system upon launch of the emulator. LogCat The LogCat feature is used to view logging messages on the device. This feature permits you to view both application-level log messages as well as kernel-level messages. Only the font is selectable in this dialog, so adjust this as desired. Don t be fooled by this simple configuration setting the LogCat is your friend and is demonstrated throughout the book. Usage Stats This optional feature sends your usage stats to Google to help the Android tools team better understand which features of the plug-in are used in an effort to enhance the toolset. Your Android development environment is complete!

If you ve ever done any chat-related programming, you ll have come across trolls: downright nasty individuals who you don t want on your site You may even have banned them via their IP address If you have, you may also have encountered the problem of these individuals restarting their web connections to obtain new IP addresses with which to harass you and your users You will also possibly have noticed that some bad users share their IP address with good ones, generally because they work in the same building and share a DSL or similar Internet connection So blocking a bad user by IP would also block good ones But there is a way you can ban unwanted users more permanently and precisely, and that s to leave a cookie on their computer, as this plug-in does For example, Figure 9-10 shows

' ========================== Begin Main Program ========================== dirsB = %11111111 ' all outputs dirsC = %10111101 ' C1 & C6 are inputs LEDs = %00000001 ' start count at 1 setint %00000010, %00000010, C do wait 1 loop ' simulate a longer program

Preparing an application for distribution Digitally signing an application Publishing applications to the Android Market and beyond

9:

Writing and debugging applications can be both exhausting and satisfying, but the day will come when it s time to move past development and graduate to publishing your Android application for others to use. This appendix presents best practices for preparing an application for publication and then walks step by step through the process of digitally signing an application and uploading it to the Android Market. In the most basic sense, publishing an application involves digitally signing it and uploading it to the Android Market or other venues for distribution. But for you to properly prepare an Android application, a few steps precede the distribution stage. If you observe these guidelines carefully, the odds of your customers having a positive experience with your application increase significantly. Ignore these best practices and you run the risk of tarnishing your reputation as a mobile developer.

' ======= End Main Program Subroutines follow ====== interrupt: inc LEDs pause 50 tarry: if btn is on then tarry pause 50 if LEDs = 127 then LEDs = 1 endif setint %00000010, %00000010, C return

FIGURE 9-10

Preparing an Android application for distribution is a somewhat straightforward and methodical task, though one that requires considerable attention to detail. This section presents a list of things to consider prior to releasing your application. It s not meant to be an exhaustive list but rather a framework for cleaning up your application.

B.1.1

a session being opened with the PIPHP_OpenSession() plug-in, and then this plug-in, PIPHP_BlockUserByCookie(), being called to send a blocking cookie to the user s browser

Mary is an unusual project; on the surface, it appears to be about making music with a PICAXE processor, but it really isn t! Mary s true purpose in life is to give us some experience coordinating different types of outputs on PICAXE processors We aren t going to get into the details of the PICAXE music-making capabilities, but if you would like to know more about the subject, you may want to read the first two installments of the PICAXE Primer column in Nuts and Volts magazine (December 2007 and February 2008) If you actually enjoy reading manuals, the details are also covered in the PICAXE documentation for the play, sound, and tune commands In this project, we re going to take a familiar tune (bet you can t guess which one) and intersperse the individual notes with a coordinated