http://blog.csdn.net/DragonCheng/archive/2009/04/16/4083069.aspx
进入不了source.android.com，故是网友介绍的一种方式下载的。
下载完毕后，源码目前有3.83G大小。
首先，你先到 http://code.google.com/p/msysgit/downloads/list 上下载Git-xxx.exe，我下載的是 Git-1.6.2.2-preview20090408.exe。
下載下來後，直接按確定到底，就可以完成安裝。裝完後，執行他的 Git Bash 程式。你會看到像是下面這樣的命令列視窗。其實，這就是個和 Linux 上相同的 bash，不少 Linux 命令都有，連 Perl 也找的到。不過，最重要的是，他整合進 git 這個命令。
接著，用 cd 命令，進入到你要下載 Android 原始碼的目錄後，再執行 git clone <repository> 命令，就可以下載你指定的 package。
舉個例子來說，我想要下載 Browsers 這個應用程式的原始碼。底下是我在 Git Bash 中下的命令。
cd /d/AndroidProgram/AndroidSource/1.0r1/Android_open_source/platform/packages/apps
git clone git://android.git.kernel.org/platform/packages/apps/Browser.git
這步的關鍵就在，你要知道你所要下載原始碼的 repository。告訴你，所有的 Android repositories 都在 http://git.source.android.com。進入這個網站後，你會看到下面這樣的畫面。
Project 這一欄列的就是 Android 中每個 sub-project 的路徑。前面再加上 git://android.git.kernel.org/ 就是他的 repository 路徑。
再舉個例子來說，如果你像要下載 SQLite 的原始碼，那就下：
git clone git://android.git.kernel.org/platform/external/sqlite.git
如果你只是想看某個檔案的內容，你也可以點最右邊的 tree 連結，就這樣一路點下去，看到檔案列表時，再點最右邊的 raw 連結。看到沒，原始碼就顯示在你的瀏覽器上。
如果你想下载全部源代码怎么办，目前没有看到好的办法，我的做法是将上面的git列表中的内容拷贝下来，然后写成一个shell命令执行。
我的做法：
1:拷贝git列表时，请点击http://android.git.kernel.org/右下角的"TXT"按钮，此时将出现TXT文档的git列表，将每列后面的"Android+Open+Source+Project"替换为空，然后在每列前面加上git clone git://android.git.kernel.org/即可，建议选择一个可以进行列操作的编辑器，比如说ultredit.我1min不到就将列表搞定了。
注意需要进入到相应的目录下才能下载。我下载完毕后发现全部放到根目录下了，故最后用下面的python脚本进行了移动
import fileinput
import sys
import re
import os
import string
outfp = open("D:/cj/project/android/tools/move.sh","w")
for line in fileinput.input("D:/cj/project/android/tools/git-list"):
path = os.path.dirname(line)
file = os.path.basename(line)
file = file.replace("\r", "")
file = file.replace("\n", "")
xx = ""
for dirx in path.split("/"):
xx = xx + dirx + "/"
outfp.write("mkdir " + xx + "\n")
outfp.write("mv " + file + " " + path + "\n")
outfp.close()
2:将该列表保存在源代码目录下，文件名为update.sh
3:在git窗口下执行： update.sh
然后你就慢慢等待吧。
git列表文件为：
git clone git://android.git.kernel.org/tools/gwtexpui.git
git clone git://android.git.kernel.org/tools/gerrit-contactstore.git
git clone git://android.git.kernel.org/tools/gerrit-keyapplet.git
git clone git://android.git.kernel.org/tools/executablewar.git
git clone git://android.git.kernel.org/tools/test/project0.git
git clone git://android.git.kernel.org/tools/test/manifest.git
git clone git://android.git.kernel.org/tools/repo.git
git clone git://android.git.kernel.org/tools/protobuf.git
git clone git://android.git.kernel.org/tools/manifest.git
git clone git://android.git.kernel.org/tools/gwtorm.git
git clone git://android.git.kernel.org/tools/gwtjsonrpc.git
git clone git://android.git.kernel.org/tools/gerrit.git
git clone git://android.git.kernel.org/tools/android-issuetrackerredirect.git
git clone git://android.git.kernel.org/platform/vendor/qcom/surf.git
git clone git://android.git.kernel.org/platform/vendor/htc/dream.git
git clone git://android.git.kernel.org/platform/vendor/asus/eee_701.git
git clone git://android.git.kernel.org/platform/system/wlan/broadcom.git
git clone git://android.git.kernel.org/platform/system/wlan/ti.git
git clone git://android.git.kernel.org/platform/system/extras.git
git clone git://android.git.kernel.org/platform/system/core.git
git clone git://android.git.kernel.org/platform/system/bluetooth.git
git clone git://android.git.kernel.org/platform/recovery.git
git clone git://android.git.kernel.org/platform/prebuilt.git
git clone git://android.git.kernel.org/platform/packages/inputmethods/PinyinIME.git
git clone git://android.git.kernel.org/platform/packages/inputmethods/LatinIME.git
git clone git://android.git.kernel.org/platform/packages/providers/UserDictionaryProvider.git
git clone git://android.git.kernel.org/platform/packages/providers/TelephonyProvider.git
git clone git://android.git.kernel.org/platform/packages/providers/MediaProvider.git
git clone git://android.git.kernel.org/platform/packages/providers/ImProvider.git
git clone git://android.git.kernel.org/platform/packages/providers/GoogleSubscribedFeedsProvider.git
git clone git://android.git.kernel.org/platform/packages/providers/GoogleContactsProvider.git
git clone git://android.git.kernel.org/platform/packages/providers/DrmProvider.git
git clone git://android.git.kernel.org/platform/packages/providers/DownloadProvider.git
git clone git://android.git.kernel.org/platform/packages/providers/ContactsProvider.git
git clone git://android.git.kernel.org/platform/packages/providers/CalendarProvider.git
git clone git://android.git.kernel.org/platform/packages/apps/OTAProvisioningClient.git
git clone git://android.git.kernel.org/platform/packages/apps/VoiceDialer.git
git clone git://android.git.kernel.org/platform/packages/apps/Updater.git
git clone git://android.git.kernel.org/platform/packages/apps/Sync.git
git clone git://android.git.kernel.org/platform/packages/apps/Stk.git
git clone git://android.git.kernel.org/platform/packages/apps/SoundRecorder.git
git clone git://android.git.kernel.org/platform/packages/apps/Settings.git
git clone git://android.git.kernel.org/platform/packages/apps/Phone.git
git clone git://android.git.kernel.org/platform/packages/apps/PackageInstaller.git
git clone git://android.git.kernel.org/platform/packages/apps/Music.git
git clone git://android.git.kernel.org/platform/packages/apps/Mms.git
git clone git://android.git.kernel.org/platform/packages/apps/Launcher.git
git clone git://android.git.kernel.org/platform/packages/apps/IM.git
git clone git://android.git.kernel.org/platform/packages/apps/HTMLViewer.git
git clone git://android.git.kernel.org/platform/packages/apps/GoogleSearch.git
git clone git://android.git.kernel.org/platform/packages/apps/Email.git
git clone git://android.git.kernel.org/platform/packages/apps/Contacts.git
git clone git://android.git.kernel.org/platform/packages/apps/Camera.git
git clone git://android.git.kernel.org/platform/packages/apps/Calendar.git
git clone git://android.git.kernel.org/platform/packages/apps/Calculator.git
git clone git://android.git.kernel.org/platform/packages/apps/Browser.git
git clone git://android.git.kernel.org/platform/packages/apps/AlarmClock.git
git clone git://android.git.kernel.org/platform/manifest.git
git clone git://android.git.kernel.org/platform/hardware/libhardware_legacy.git
git clone git://android.git.kernel.org/platform/hardware/ril.git
git clone git://android.git.kernel.org/platform/hardware/msm7k.git
git clone git://android.git.kernel.org/platform/hardware/libhardware.git
git clone git://android.git.kernel.org/platform/hardware/alsa_sound.git
git clone git://android.git.kernel.org/platform/frameworks/policies/base.git
git clone git://android.git.kernel.org/platform/frameworks/opt/emoji.git
git clone git://android.git.kernel.org/platform/frameworks/opt/com.google.android.googlelogin.git
git clone git://android.git.kernel.org/platform/frameworks/opt/com.google.android.git
git clone git://android.git.kernel.org/platform/frameworks/base.git
git clone git://android.git.kernel.org/platform/external/alsa-utils.git
git clone git://android.git.kernel.org/platform/external/dosfstools.git
git clone git://android.git.kernel.org/platform/external/zlib.git
git clone git://android.git.kernel.org/platform/external/yaffs2.git
git clone git://android.git.kernel.org/platform/external/xdelta3.git
git clone git://android.git.kernel.org/platform/external/wpa_supplicant.git
git clone git://android.git.kernel.org/platform/external/webkit.git
git clone git://android.git.kernel.org/platform/external/tremor.git
git clone git://android.git.kernel.org/platform/external/tinyxml.git
git clone git://android.git.kernel.org/platform/external/tesseract.git
git clone git://android.git.kernel.org/platform/external/tcpdump.git
git clone git://android.git.kernel.org/platform/external/tagsoup.git
git clone git://android.git.kernel.org/platform/external/strace.git
git clone git://android.git.kernel.org/platform/external/srec.git
git clone git://android.git.kernel.org/platform/external/sqlite.git
git clone git://android.git.kernel.org/platform/external/sonivox.git
git clone git://android.git.kernel.org/platform/external/skia.git
git clone git://android.git.kernel.org/platform/external/safe-iop.git
git clone git://android.git.kernel.org/platform/external/qemu.git
git clone git://android.git.kernel.org/platform/external/protobuf.git
git clone git://android.git.kernel.org/platform/external/ppp.git
git clone git://android.git.kernel.org/platform/external/ping.git
git clone git://android.git.kernel.org/platform/external/oprofile.git
git clone git://android.git.kernel.org/platform/external/openssl.git
git clone git://android.git.kernel.org/platform/external/opencore.git
git clone git://android.git.kernel.org/platform/external/neven.git
git clone git://android.git.kernel.org/platform/external/netperf.git
git clone git://android.git.kernel.org/platform/external/netcat.git
git clone git://android.git.kernel.org/platform/external/libxml2.git
git clone git://android.git.kernel.org/platform/external/libpng.git
git clone git://android.git.kernel.org/platform/external/libpcap.git
git clone git://android.git.kernel.org/platform/external/libffi.git
git clone git://android.git.kernel.org/platform/external/jpeg.git
git clone git://android.git.kernel.org/platform/external/jhead.git
git clone git://android.git.kernel.org/platform/external/jdiff.git
git clone git://android.git.kernel.org/platform/external/iptables.git
git clone git://android.git.kernel.org/platform/external/icu4c.git
git clone git://android.git.kernel.org/platform/external/grub.git
git clone git://android.git.kernel.org/platform/external/googleclient.git
git clone git://android.git.kernel.org/platform/external/giflib.git
git clone git://android.git.kernel.org/platform/external/genext2fs.git
git clone git://android.git.kernel.org/platform/external/gdata.git
git clone git://android.git.kernel.org/platform/external/fsck_msdos.git
git clone git://android.git.kernel.org/platform/external/freetype.git
git clone git://android.git.kernel.org/platform/external/fdlibm.git
git clone git://android.git.kernel.org/platform/external/expat.git
git clone git://android.git.kernel.org/platform/external/esd.git
git clone git://android.git.kernel.org/platform/external/emma.git
git clone git://android.git.kernel.org/platform/external/embunit.git
git clone git://android.git.kernel.org/platform/external/elfutils.git
git clone git://android.git.kernel.org/platform/external/elfcopy.git
git clone git://android.git.kernel.org/platform/external/e2fsprogs.git
git clone git://android.git.kernel.org/platform/external/dropbear.git
git clone git://android.git.kernel.org/platform/external/dhcpcd.git
git clone git://android.git.kernel.org/platform/external/dbus.git
git clone git://android.git.kernel.org/platform/external/clearsilver.git
git clone git://android.git.kernel.org/platform/external/bzip2.git
git clone git://android.git.kernel.org/platform/external/bsdiff.git
git clone git://android.git.kernel.org/platform/external/bluez.git
git clone git://android.git.kernel.org/platform/external/bison.git
git clone git://android.git.kernel.org/platform/external/apache-http.git
git clone git://android.git.kernel.org/platform/external/alsa-lib.git
git clone git://android.git.kernel.org/platform/external/aes.git
git clone git://android.git.kernel.org/platform/development.git
git clone git://android.git.kernel.org/platform/dalvik.git
git clone git://android.git.kernel.org/platform/build.git
git clone git://android.git.kernel.org/platform/bootloader/legacy.git
git clone git://android.git.kernel.org/platform/bootable/recovery.git
git clone git://android.git.kernel.org/platform/bootable/diskinstaller.git
git clone git://android.git.kernel.org/platform/bootable/bootloader/legacy.git
git clone git://android.git.kernel.org/platform/bionic.git
git clone git://android.git.kernel.org/kernel/experimental.git
git clone git://android.git.kernel.org/kernel/msm.git
git clone git://android.git.kernel.org/kernel/common.git
本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/DragonCheng/archive/2009/04/16/4083069.aspx