大陆直接访问Android的光放网站一般情况下比较困难，特此列出了Android各个SDK版本的直接下载地址。
ADT
23.0.4：https://dl.google.com/android/ADT-23.0.4.zip
SDK——23.0.2
Windows32 & 64-bit:http://dl.google.com/android/android-sdk_r23.0.2-windows.zip
Windows32 & 64-bit:http://dl.google.com/android/installer_r23.0.2-windows.exe
Mac OS X32 & 64-bit:http://dl.google.com/android/android-sdk_r23.0.2-macosx.zip
Linux32 & 64-bit:http://dl.google.com/android/android-sdk_r23.0.2-linux.tgz
ADT Bundle——23.0.2
Windows 32-bit:https://dl.google.com/android/adt/adt-bundle-windows-x86-20140702.zip
Windows 64-bit:https://dl.google.com/android/adt/adt-bundle-windows-x86_64-20140702.zip
Mac OS X 64-bit:https://dl.google.com/android/adt/adt-bundle-mac-x86_64-20140702.zip
Linux 32-bit:https://dl.google.com/android/adt/adt-bundle-linux-x86-20140702.zip
Linux 64-bit:https://dl.google.com/android/adt/adt-bundle-linux-x86_64-20140702.zip
查看需要下载的android platform包的地址： https://dl-ssl.google.com/android/repository/repository-7.xml
1. Android 2.2 platform : http://dl-ssl.google.com/android/repository/android-2.2_r02-linux.zip
2. Android 3.2 platform: http://dl-ssl.google.com/android/repository/android-3.2_r01-linux.zip
3. Android 4.0.3 platform: http://dl-ssl.google.com/android/repository/android-15_r03.zip
4.1虚拟机下载地址 http://download-software.intel.com/sites/landingpage/android/sysimg_x86-16_r01.zip
4.2虚拟机下载地址 http://download-software.intel.com/sites/landingpage/android/sysimg_x86-17_r01.zip
4.1 4.2官方安装方法 http://software.intel.com/en-us/articles/intel-atom-x86-image-for-android-4-2-jelly-bean-installation-instructions-manually
2.3 官方安装方法 http://software.intel.com/en-us/articles/alternate-method-installing-the-intel-atom-android-x86-emulator-image-manually
(1)Android SDK (Android SDK主安装包，包含SDK Manager、AVD Manager、工具包tools，释放后的根文件夹为android-sdk-windows):
revision 20.0.3
http://dl.google.com/android/android-sdk_r20.0.3-windows.zip
http://dl.google.com/android/android-sdk_r20.0.3-macosx.zip
http://dl.google.com/android/android-sdk_r20-linux_x86.tgz
revision 21
http://dl.google.com/android/android-sdk_r21-windows.zip
http://dl.google.com/android/android-sdk_r21-linux.tgz
http://dl.google.com/android/android-sdk_r21-macosx.zip
revision 21.0.1
http://dl.google.com/android/android-sdk_r21.0.1-windows.zip
http://dl.google.com/android/android-sdk_r21.0.1-linux.tgz
http://dl.google.com/android/android-sdk_r21.0.1-macosx.zip
revision 21.1
http://dl.google.com/android/android-sdk_r21.1-windows.zip
http://dl.google.com/android/android-sdk_r21.1-linux.tgz
http://dl.google.com/android/android-sdk_r21.1-macosx.zip
revision 22.0.1
http://dl.google.com/android/android-sdk_r22.0.1-windows.zip
http://dl.google.com/android/installer_r22.0.1-windows.exe
http://dl.google.com/android/android-sdk_r22.0.1-linux.tgz
http://dl.google.com/android/android-sdk_r22.0.1-macosx.zip
(2)tools (Android SDK的工具包，释放到android-sdk-windows下，文件夹tools覆盖android-sdk-windows/tools)
revision 20.0.3
https://dl-ssl.google.com/android/repository/tools_r20.0.3-windows.zip
https://dl-ssl.google.com/android/repository/tools_r20.0.3-macosx.zip
https://dl-ssl.google.com/android/repository/tools_r20.0.3-linux.zip
revision 21
https://dl-ssl.google.com/android/repository/tools_r21-windows.zip
https://dl-ssl.google.com/android/repository/tools_r21-linux.zip
https://dl-ssl.google.com/android/repository/tools_r21-macosx.zip
revision 21.0.1
https://dl-ssl.google.com/android/repository/tools_r21.0.1-windows.zip
https://dl-ssl.google.com/android/repository/tools_r21.0.1-linux.zip
https://dl-ssl.google.com/android/repository/tools_r21.0.1-macosx.zip
revision 21.1
https://dl-ssl.google.com/android/repository/tools_r21.1-windows.zip
https://dl-ssl.google.com/android/repository/tools_r21.1-linux.zip
https://dl-ssl.google.com/android/repository/tools_r21.1-macosx.zip
revision 22.0.1
https://dl-ssl.google.com/android/repository/tools_r22.0.1-windows.zip
https://dl-ssl.google.com/android/repository/tools_r22.0.1-linux.zip
https://dl-ssl.google.com/android/repository/tools_r22.0.1-macosx.zip
(3)platform-tools (Android平台工具包，释放到android-sdk-windows下，产生文件夹platform-tools)
revision 12
https://dl-ssl.google.com/android/repository/platform-tools_r12-windows.zip
https://dl-ssl.google.com/android/repository/platform-tools_r12-linux.zip
https://dl-ssl.google.com/android/repository/platform-tools_r12-macosx.zip
revision 14
https://dl-ssl.google.com/android/repository/platform-tools_r14-windows.zip
revision 16
https://dl-ssl.google.com/android/repository/platform-tools_r16-windows.zip
https://dl-ssl.google.com/android/repository/platform-tools_r16-linux.zip
https://dl-ssl.google.com/android/repository/platform-tools_r16-macosx.zip
revision 16.0.2
https://dl-ssl.google.com/android/repository/platform-tools_r16.0.2-windows.zip
https://dl-ssl.google.com/android/repository/platform-tools_r16.0.2-linux.zip
https://dl-ssl.google.com/android/repository/platform-tools_r16.0.2-macosx.zip
revision 17
https://dl-ssl.google.com/android/repository/platform-tools_r17-windows.zip
https://dl-ssl.google.com/android/repository/platform-tools_r17-linux.zip
https://dl-ssl.google.com/android/repository/platform-tools_r17-macosx.zip
(4)build-tools (释放到android-sdk-windows下，产生文件夹build-tools)
revision 17
https://dl-ssl.google.com/android/repository/build-tools_r17-windows.zip
https://dl-ssl.google.com/android/repository/build-tools_r17-linux.zip
https://dl-ssl.google.com/android/repository/build-tools_r17-macosx.zip
(5)platforms (各种版本的Android平台，释放到android-sdk-windows/platforms下)
Android 2.0 (API 5) Obsolete:
https://dl-ssl.google.com/android/repository/android-2.0_r01-windows.zip
https://dl-ssl.google.com/android/repository/android-2.0_r01-linux.zip
https://dl-ssl.google.com/android/repository/android-2.0_r01-macosx.zip
Android 2.0.1 (API 6) Obsolete:
https://dl-ssl.google.com/android/repository/android-2.0.1_r01-windows.zip
https://dl-ssl.google.com/android/repository/android-2.0.1_r01-linux.zip
https://dl-ssl.google.com/android/repository/android-2.0.1_r01-macosx.zip
Android 2.1 (API 7):
https://dl-ssl.google.com/android/repository/android-2.1_r02-windows.zip
https://dl-ssl.google.com/android/repository/android-2.1_r03-linux.zip
Android 2.2 (API 8):
https://dl-ssl.google.com/android/repository/android-2.2_r01-windows.zip
https://dl-ssl.google.com/android/repository/android-2.2_r03-linux.zip
Android 2.3 (API 9) Obsolete:
https://dl-ssl.google.com/android/repository/android-2.3.1_r02-linux.zip
Android 2.3.3 (API 10):
https://dl-ssl.google.com/android/repository/android-2.3.3_r02-linux.zip
Android 3.0 (API 11):
https://dl-ssl.google.com/android/repository/android-3.0_r02-linux.zip
Android 3.1 (API 12):
https://dl-ssl.google.com/android/repository/android-3.1_r03-linux.zip
Android 3.2 (API 13):
https://dl-ssl.google.com/android/repository/android-3.2_r01-linux.zip
Android 4.0 (API 14):
https://dl-ssl.google.com/android/repository/android-14_r03.zip
Android 4.0.3 (API 15):
https://dl-ssl.google.com/android/repository/android-15_r03.zip
Android 4.1.2 (API 16):
https://dl-ssl.google.com/android/repository/android-16_r04.zip
Android 4.2.2 (API 17):
https://dl-ssl.google.com/android/repository/android-17_r02.zip
(6)system-images (Android系统镜像，释放到android-sdk-windows/system-images/android-xx下[xx对应api版本数字])
system-images/android-10
http://dl-ssl.google.com/android/repository/sys-img/x86/sysimg_x86-10_r02.zip
system-images/android-14
https://dl-ssl.google.com/android/repository/sysimg_armv7a-14_r02.zip
system-images/android-15
https://dl-ssl.google.com/android/repository/sysimg_armv7a-15_r02.zip
https://dl-ssl.google.com/android/repository/sys-img/mips/sysimg_mips-15_r01.zip
https://dl-ssl.google.com/android/repository/sys-img/x86/sysimg_x86-15_r01.zip
system-images/android-16
https://dl-ssl.google.com/android/repository/sysimg_armv7a-16_r03.zip
https://dl-ssl.google.com/android/repository/sys-img/mips/sysimg_mips-16_r04.zip
https://dl-ssl.google.com/android/repository/sys-img/x86/sysimg_x86-16_r01.zip
system-images/android-17
http://dl-ssl.google.com/android/repository/sysimg_armv7a-17_r02.zip
http://dl-ssl.google.com/android/repository/sys-img/mips/sysimg_mips-17_r01.zip
http://dl-ssl.google.com/android/repository/sys-img/x86/sysimg_x86-17_r01.zip
(7)docs (文档，释放到android-sdk-windows下，会产生文件夹docs)
https://dl-ssl.google.com/android/repository/docs-16_r03.zip
https://dl-ssl.google.com/android/repository/docs-17_r02.zip
(8)samples (应用实例，释放到android-sdk-windows/samples下)
https://dl-ssl.google.com/android/repository/samples-2.1_r01-linux.zip
https://dl-ssl.google.com/android/repository/samples-2.2_r01-linux.zip
https://dl-ssl.google.com/android/repository/samples-2.3_r01-linux.zip
https://dl-ssl.google.com/android/repository/samples-2.3.3_r01-linux.zip
https://dl-ssl.google.com/android/repository/samples-3.0_r01-linux.zip
https://dl-ssl.google.com/android/repository/samples-3.1_r01-linux.zip
https://dl-ssl.google.com/android/repository/samples-3.2_r01-linux.zip
https://dl-ssl.google.com/android/repository/samples-14_r02.zip
https://dl-ssl.google.com/android/repository/samples-15_r02.zip
https://dl-ssl.google.com/android/repository/samples-16_r01.zip
https://dl-ssl.google.com/android/repository/samples-17_r01.zip
(9)sources (Android源程序，释放到android-sdk-windows/sources/android-xx下[xx对应api版本数字])
https://dl-ssl.google.com/android/repository/sources-14_r01.zip
https://dl-ssl.google.com/android/repository/sources-15_r02.zip
https://dl-ssl.google.com/android/repository/sources-16_r02.zip
https://dl-ssl.google.com/android/repository/sources-17_r01.zip
(10)extras (扩展应用，释放到android-sdk-windows/extras下)
extras/android/support
https://dl-ssl.google.com/android/repository/support_r06.zip
https://dl-ssl.google.com/android/repository/support_r10.zip
https://dl-ssl.google.com/android/repository/support_r11.zip
https://dl-ssl.google.com/android/repository/support_r12.zip
https://dl-ssl.google.com/android/repository/support_r13.zip
extras/android/m2repository
https://dl-ssl.google.com/android/repository/android_m2repository_r01.zip
extras/google/admob_ads_sdk
https://dl-ssl.google.com/googleadmobadssdk/googleadmobadssdkandroid-6.3.0.zip
https://dl-ssl.google.com/googleadmobadssdk/googleadmobadssdkandroid-6.3.1.zip
https://dl-ssl.google.com/googleadmobadssdk/googleadmobadssdkandroid-6.4.1.zip
extras/google/analytics_sdk_v2
https://dl.google.com/gaformobileapps/GoogleAnalyticsAndroid_1.4.2.zip
https://dl.google.com/gaformobileapps/GoogleAnalyticsAndroid_2.0beta4.zip
https://dl.google.com/gaformobileapps/GoogleAnalyticsAndroid_2.0beta4.1.zip
https://dl-ssl.google.com/android/repository/GoogleAnalyticsAndroid_2.0beta4.1.zip
https://dl.google.com/gaformobileapps/GoogleAnalyticsAndroid_2.0beta5.zip
https://dl.google.com/gaformobileapps/GoogleAnalyticsAndroid_2.0beta5.zip
extras/google/gcm
https://dl-ssl.google.com/android/repository/gcm_r03.zip
extras/google/google_play_services
https://dl-ssl.google.com/android/repository/google_play_services_1013.zip
https://dl-ssl.google.com/android/repository/google_play_services_2012110_r04.zip
https://dl-ssl.google.com/android/repository/google_play_services_3025110_r05.zip
https://dl-ssl.google.com/android/repository/google_play_services_3027110_r06.zip
https://dl-ssl.google.com/android/repository/google_play_services_3136110_r07.zip
extras/google/m2repository
https://dl-ssl.google.com/android/repository/google_m2repository_r01.zip
extras/google/play_apk_expansion
https://dl-ssl.google.com/android/repository/market_apk_expansion-r03.zip
extras/google/play_billing
https://dl-ssl.google.com/android/repository/play_billing_r04.zip
extras/google/play_licensing
https://dl-ssl.google.com/android/repository/market_licensing-r02.zip
extras/usb_driver
https://dl-ssl.google.com/android/repository/usb_driver_r04-windows.zip
https://dl-ssl.google.com/android/repository/usb_driver_r07-windows.zip
extras/google/webdriver
https://dl-ssl.google.com/android/repository/webdriver_r02.zip
extras/intel/Hardware_Accelerated_Execution_Manager
https://download-software.intel.com/sites/landingpage/android/extra_intel_haxm-windows_r02.zip
https://download-software.intel.com/sites/landingpage/android/extra_intel_haxm-macosx_r02.zip
https://dl-ssl.google.com/android/repository/extras/intel/haxm-windows_r03.zip
https://dl-ssl.google.com/android/repository/extras/intel/haxm-macosx_r03.zip
(11)add-ons (google手机api,释放到android-sdk-windows/add-ons/)
addon-google_apis-google-xx[xx对应api版本数字]
https://dl-ssl.google.com/android/repository/google_apis-7_r01.zip
https://dl-ssl.google.com/android/repository/google_apis-8_r02.zip
https://dl-ssl.google.com/android/repository/google_apis-9_r02.zip
https://dl-ssl.google.com/android/repository/google_apis-10_r02.zip
https://dl-ssl.google.com/android/repository/google_apis-11_r01.zip
https://dl-ssl.google.com/android/repository/google_apis-12_r01.zip
https://dl-ssl.google.com/android/repository/google_apis-13_r01.zip
https://dl-ssl.google.com/android/repository/google_apis-14_r02.zip
https://dl-ssl.google.com/android/repository/google_apis-15_r02.zip
https://dl-ssl.google.com/android/repository/google_apis-16_r03.zip
https://dl-ssl.google.com/android/repository/google_apis-17_r03.zip
addon-intel_atom_x86_system_image-intel_corporation-xx
https://software.intel.com/sites/landingpage/android/addon_intel_sysimg_2.3.7_api-10.zip
addon-dual_screen_apis-kyocera_corporation-xx (Dual Screen api)
http://dl.kyocera-wireless.com/echobykyocera.com/ECHO-SDK-v1-03.zip
http://dl.kyocera-wireless.com/echobykyocera.com/ECHO-SDK-v2-00.zip
addon-sony_xperia_extensions_edk_2_0-sony_mobile_communications_ab-xx
http://dl-developer.sonymobile.com/edk/android/edk_2.0_ver2.zip
addon-real3d-lge-xx
http://developer.lgmobile.com/sdk/android/Real3D_addon_api-8_r01.zip
http://developer.lgmobile.com/sdk/android/Real3D_SDK_api-10_r02.zip
http://developer.lgmobile.com/sdk/android/Real3D_SDK_api-14_r01.zip
addon-htc_opensense_sdk-htc-15
http://dl.htcdev.com/sdk/zip/htc_opensense_sdk.zip
addon-htc_opensense_apis-16
http://dl.htcdev.com/sdk/zip/htc_opensense_apis.zip
https://dl-ssl.google.com/android/repository/google_tv-12_r02.zip
https://dl-ssl.google.com/android/repository/google_tv-13_r01.zip
说明: 以上第(3)点及以后，可以将安装包放在文件夹android-sdk-windows/temp下，通过SDK Manager自动安装释放到相应位置.
(12)ADT Plugin for Eclipse
http://dl.google.com/android/ADT-20.0.3.zip
http://dl.google.com/android/ADT-21.0.0.zip
http://dl.google.com/android/ADT-21.0.1.zip
http://dl.google.com/android/ADT-21.1.0.zip
http://dl.google.com/android/ADT-22.0.1.zip
(13)Android Developer Tools(基于Eclipse的Android开发环境，已包含Eclipse与ADT).
http://dl.google.com/android/adt/adt-bundle-windows-x86.zip
http://dl.google.com/android/adt/adt-bundle-windows-x86_64.zip
http://dl.google.com/android/adt/adt-bundle-linux-x86.zip
http://dl.google.com/android/adt/adt-bundle-linux-x86_64.zip
http://dl.google.com/android/adt/adt-bundle-mac-x86_64.zip
http://dl.google.com/android/adt/adt-bundle-windows-x86-20130219.zip
http://dl.google.com/android/adt/adt-bundle-windows-x86_64-20130219.zip
http://dl.google.com/android/adt/adt-bundle-linux-x86-20130219.zip
http://dl.google.com/android/adt/adt-bundle-linux-x86_64-20130219.zip
http://dl.google.com/android/adt/adt-bundle-mac-x86_64-20130219.zip
http://dl.google.com/android/adt/adt-bundle-windows-x86-20130522.zip
http://dl.google.com/android/adt/adt-bundle-windows-x86_64-20130522.zip
http://dl.google.com/android/adt/adt-bundle-linux-x86-20130522.zip
http://dl.google.com/android/adt/adt-bundle-linux-x86_64-20130522.zip
http://dl.google.com/android/adt/adt-bundle-mac-x86_64-20130522.zip
Android SDK 官方下载页面
http://developer.android.com/sdk/index.html