android 4

First , on the old device , go to Settings , Privacy Settings ( for devices running Android version 2 ) or Settings , Backup and Reset ( for devices running Android version 4 or 5 ) .

首先，在旧设备上选择“设备”->“隐私设置”（适用于搭载安卓2.0版本的设备），你也可以进入“设置”->“备份与重置”（适用于搭载安卓4.0或5.0版本的设备）。

According to the proposed security architecture and the Android system architecture , this paper designs and implements a cloud-based security system for Android mobile devices . 4 .

根据提出的安全架构，通过对Android系统架构的研究，设计并实现了基于云的Android移动终端安全系统。

Completed the construction of the Android application development environment , familiar with the Android application development features and system frame structure , mastered the development process and the debugging process of Android applications . 4 .

完成了Android应用开发环境的搭建，熟悉了Android应用程序开发特点与系统框架结构，掌握了Android应用的开发流程以及调试过程。