使用 Git 获取 Android 源码的方法：

https://android.googlesource.com/mirror/manifest.git

获取 Android 源码的方法：

mkdir /usr/local/android-mirror
cd /usr/local/android-mirror
repo init --mirror -u https://android.googlesource.com/mirror/manifest
repo sync
mkdir /usr/local/android-2.3.7
cd /usr/local/android-2.3.7
repo init -u /usr/local/mirror/platform/manifest.git -b android-2.3.7_r1
repo sync
repo init -u https://android.googlesource.com/platform/manifest
repo sync