Android 事件捕捉和处理流程分析 ，在Android系统中，键盘按键事件是由WindowManagerService服务来管理的，然后再以消息的形式来分发给应用程序处理，不过和普通消息不一样，它是由硬件中断触发的；在上一篇文章《Android应用程序消息处理机制（Looper、Handler）分析》中，我们分析了Android应用程序的消息处理机制，本文将结合这种消息处理机制来详细分析Android应用程序是如何获得键盘按键消息的。-Android event capture and process flow analysis, the Android system, keyboard key events by WindowManagerService services to manage, and then in the form of messages to be distributed application processing, but is not the same and the general message, it is a hardware interrupt trigger　 in the previous article Android application message handling mechanism (Looper, Handler) analysis, we analyzed the the Android application message handling mechanism, the paper will combine the detailed analysis of message processing mechanism how Android applications keyboard keys message.