说明：  Android开发笔记，内容涉及模拟器参数、进程与线程、Android 释放手机资源，进程释放优先级、分析HelloAndroid、添加编辑框与按钮、使用Intent启动另一个Activity、在不同Task中启动Activity、Intent与Intent filters、添加新的Activity等相关知识。
(Android development notes, including emulator parameters, processes and threads, Android release mobile phone resources, process release priority, analysis of HelloAndroid, add edit boxes and buttons, use Intent to start another Activity, start Activity in different Task, Intent and Intent Filters, add new Activity and other related knowledge.)