cheat sheets.

Android Development
  Google's Mobile Operating System
  Currently on the G1 phone available from T-Mobile in the US. 
==========================================================

Hello World: 
  http://developer.android.com/guide/tutorials/hello-world.html

Not Using Eclipse IDE? 
  http://developer.android.com/guide/developing/other-ide.html


Table of Contents
==================================
* Creating a Project Without Eclipse
* Running a Project
* Android Virtual Device (AVD)
    Creating an AVD
    Listing Targets
* Working with Virtual SD Cards
    Creating an SD Card
    Mounting SD Card
    Adding Card to AVD
* Android and Google Maps API
    Getting MD5 Fingerprint of SDK Debug Certificate
    Getting a Google Maps API Key


Creating a Project Without Eclipse
 $ android create project \
      --package com.android.helloandroid \
      --activity HelloAndroid \ 
      --target 2 \
      --path <path-to-your-project>/HelloAndroid 


Running a Project
  Launch the Emulator (see AVD below):
    $ emulator -avd <your_avd_name>
    $ ant debug # compile and sign up with debug key 
    $ adb install /path/to/your/application.apk # Install to AVD 

   "If there is more than one emulator running, you must specify the 
   emulator upon which to install the application, by its serial number, 
   with the -s option.  For example:"
   $ adb -s emulator-5554 install /my/project/path/myapp.apk


Android Virtual Device (AVD)
  This is the Android emulator, written in Java and available 
  for Windows, OS X, and Linux. 
  http://developer.android.com/guide/developing/tools/avd.html

  Creating an AVD
    $ android create avd -n <name> -t <targetID> [-<option> <value>] ...

    Example: 
      Here's an example that creates an AVD with name "my_android1.5" 
      and target ID "2" (the  standard Android 1.5 system image in 
      the list above): 

      $ android create avd -n my_android1.5 -t 2

  Listing Targets
    $ android list targets


Working with Virtual SD Cards
===============================================
Creating an SD Card
  $ mksdcard 1024 1024.sdcard # bytes 
  $ mksdcard 128M 128M.sdcard 
  $ mksdcard 2048M 2gig.sdcard

Mounting SD Card
  $ sudo mount -o loop 128M.sdcard /media/card
  $ sudo cp file1.mp3 file2.jpg file3.txt file4.txt /media/card

Adding Card to AVD
  Make sure to unmount after copying files to card
  $ sudo umount /media/card
  $ ./android create avd --name myAVD --target 2 --sdcard 128M.sdcard

If you get a warning that the SD card is locked, make sure: 
"emulator: WARNING: ignoring locked SD Card image at"
  Emulator has permissions to read/write the card file
  Emulator has RWX access to the card file's directory
  I had problems with the card file being on a FAT32 partition. 
  Moving it to ext3 or reiserFS worked. 


Thanks to 
http://blog.jayway.com/2009/04/22/working-with-sd-cards-in-the-android-emulator/



Android and Google Maps API
================================================
Use an AVD with target 3 for applications that use 
the Google Maps API.

Getting MD5 Fingerprint of SDK Debug Certificate
  You will need this key if you want to obtain a Google Maps API Key.
  This is necessary if you are using Google Maps in your Android app.

  * OS X and Linux: ~/.android/debug.keystore
  * Windows XP: C:\Documents and Settings\<user>\.android\debug.keystore
  * Windows Vista: C:\Users\<user>\.android\debug.keystore

  $ keytool -list -alias androiddebugkey \
  -keystore <path_to_debug_keystore>.keystore \
  -storepass android -keypass android

Get a Google Maps API Key: 
  The link on the official android site is a 404
  Avoid this:
  http://code.google.com/android/add-ons/google-apis/maps-api-signup.html
  Use the new link: http://code.google.com/android/maps-api-signup.html