1. repo init -u https://android.googlesource.com/platform/manifest -b android-6.0.1_r22 報如下錯誤：
fatal: Cannot get https://gerrit.googlesource.com/git-repo/clone.bundle
fatal: error [Errno 101] Network is unreachable
fatal: cloning the git-repo repository failed, will remove '.repo/repo'
解決辦法：
- a.基於https://gerrit.googlesource.com/git-repo/clone.bundle下載clone.bundle
- b.執行repo init -u https://android.googlesource.com/platform/manifest
-b android-6.0.1_r22 --repo-url ~/Dwonloads/clone.bundle
執行以上兩步，不再報“fatal: Cannot get https://gerrit.googlesource.com/git-repo/clone.bundle”錯誤
2. repo init -u https://android.googlesource.com/platform/manifest -b android-6.0.1_r22 --repo-url ~/Dwonloads/clone.bundle 報如下錯誤：
curl: Failed to connect to android.googlesource.com port 443: Connection refused
fatal: unable to access 'https://android.googlesource.com/platform/manifest/': Failed to connect to android.googlesource.com port 443: Connection refused
fatal: unable to access 'https://android.googlesource.com/platform/manifest/': Failed to connect to android.googlesource.com port 443: Connection refused
fatal: cannot obtain manifest https://android.googlesource.com/platform/manifest
解決辦法：
- a.git config --global http:proxy 172.16.1.199:808
- b.172.16.1.199是我的代理服務器，808是端口號
修改後，再次repo init成功
3.sudo apt-get install openjdk-7-jdk報如下錯誤：
E: Package 'openjdk-7-jdk' has no installation candidate
解決辦法：
-
a.由於使用的是Ubuntu16.04，該版本的安裝源默認沒有openjdk7，所以需要手動添加倉庫，執行如下命令
sudo add-apt-repository ppa:openjdk-r/ppa
sudo apt-get update
sudo apt-get install openjdk-7-jdk -
b.執行sudo apt-get update報錯如下錯誤：
W: The repository 'http://ppa.launchpad.net/fcitx-team/nightly/ubuntu xenial Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. E: Failed to fetch http://ppa.launchpad.net/fcitx-team/nightly/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead.解決辦法：
- a.在/etc/apt/sources.list.d目錄下，降fcitx-team*.list文件修改爲fcitx-team*.list.bak文件，或者直接去掉相關文件
- b.修改後ok