【Android系统】实体按键Menu键改为App_switch功能

目的：

       终端实体按键menu键，对应上层功能改为App_switch功能。

 

相关博客：

             https://blog.youkuaiyun.com/tdstds/article/details/50920443                              gpio底层dsti和gpio-keys.kl

             https://blog.youkuaiyun.com/mengxianguang352/article/details/84915144          back与App_switch对调

             https://blog.youkuaiyun.com/u011479494/article/details/50496704                     去掉back和app_switch

相关文件： 

             kernel/msm-4.9/include/uapi/linux/input-event-codes.h    

             kernel/msm-3.18/arch/arm/boot/dts/qcom/msm8953-mtp.dtsi

             device/qcom/msm8953_64/gpio-keys.kl

             frameworks/base/core/java/android/view/KeyEvent.java

             frameworks/native/services/inputflinger/InputDispatcher.cpp

 

在KeyEvent.java找到对应按键的键值，代码改动如第二篇博客。上层的功能发生变化，不过input上报的还是KEY_MENU。