（1）：安卓版QT开发环境下载：http://qt-project.org/downloads

最终未能成功安装编译器，错误:Qt Creator 需要设置一个编译器来构建。在构建套…

香港中文大学更新服务器，由香港中文大学资讯科技服务处维护，包含其他开源镜像：

deb http://ftp.cuhk.edu.hk/pub/Linux/ubuntu raring main restricted universe multiversedeb http://ftp.cuhk.edu.hk/pub/Linux/ubuntu raring-security main restricted universe multiversedeb http://ftp.cuhk.edu.hk/pub/Linux/ubuntu raring-updates main restricted universe multiversedeb http://ftp.cuhk.edu.hk/pub/Linux/ubuntu raring-backports main restricted universe multiversedeb http://ftp.cuhk.edu.hk/pub/Linux/ubuntu raring-proposed main restricted universe multiversedeb-src http://ftp.cuhk.edu.hk/pub/Linux/ubuntu raring main restricted universe multiversedeb-src http://ftp.cuhk.edu.hk/pub/Linux/ubuntu raring-security main restricted universe multiversedeb-src http://ftp.cuhk.edu.hk/pub/Linux/ubuntu raring-updates main restricted universe multiversedeb-src http://ftp.cuhk.edu.hk/pub/Linux/ubuntu raring-backports main restricted universe multiversedeb-src http://ftp.cuhk.edu.hk/pub/Linux/ubuntu raring-proposed main restricted universe

台湾的官方源。速度有时甚至快于内地的，包含 Debian 等其他镜像：

deb http://tw.archive.ubuntu.com/ubuntu raring main restricted universe multiversedeb http://tw.archive.ubuntu.com/ubuntu raring-security main restricted universe multiversedeb http://tw.archive.ubuntu.com/ubuntu raring-updates main restricted universe multiversedeb http://tw.archive.ubuntu.com/ubuntu raring-backports main restricted universe multiversedeb http://tw.archive.ubuntu.com/ubuntu raring-proposed main restricted universe multiversedeb-src http://tw.archive.ubuntu.com/ubuntu raring main restricted universe multiversedeb-src http://tw.archive.ubuntu.com/ubuntu raring-security main restricted universe multiversedeb-src http://tw.archive.ubuntu.com/ubuntu raring-updates main restricted universe multiversedeb-src http://tw.archive.ubuntu.com/ubuntu raring-backports main restricted universe multiversedeb-src http://tw.archive.ubuntu.com/ubuntu raring-proposed main restricted universe multiverse

原文地址：

http://wiki.ubuntu.org.cn/Qref/Source