李晓刚的博客

Android Apk签名

Sign your app

Sign your app-AOSP AOSP系统签名的生成和替换查看Apk的证书信息解压Apk keytool -printcert -file META-INF/CERT.RSA 所有者: C=US, O=Android, CN=Android Debug 发布者: C=US, O=Android, CN=Android De...

Posted by LXG on April 11, 2019

ubuntu16.04编译android源码

解决ubuntu16.04编译android L和M报错问题

Android L 1.切换Java版本到1.7 sudo update-alternatives –config java sudo update-alternatives –config javac 2.ld文件覆盖 cp /usr/bin/ld.gold prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4...

Posted by LXG on April 4, 2019

五个经济学思维

Principle of economics

5个经济学思维折现折现，将未来收入折算成等价的现值。该过程将一个未来值以一个折现率加以缩减，折现率应恰当地体现利率。例如，如果某人许诺2年后给你121美元。当时，正常的利率或贴现率是年率10% 机会成本机会成本(Opportunity Cost)是指在面临多方案择一决策时，被舍弃的选项中的最高价值者是本次决策的机会成本边际效用递减边际效用递减...

Posted by LXG on April 2, 2019

Android Selinux

Security-Enhanced Linux

Selinux-AOSP 问题 03-28 09:57:44.667 7326 7326 W m.sunmi.sidekey: type=1400 audit(0.0:244): avc: denied { write } for name=”property_service” dev=”tmpfs” ino=220 scontext=u:r:sunmi_app:s0:c512...

Posted by LXG on March 28, 2019

Android SystemUI

SystemUI is a persistent process that provides UI for the system but outside of the system_server process.

SystemUI-googlesource SystemUI-developer android N SystemUI-简书 config.xml-AndroidXRef  <string name="quick_settings_tiles...

Posted by LXG on March 22, 2019

Android Bluetooth

蓝牙

蓝牙-AOSP官网蓝牙API-AndroidDeveloper官网

Posted by LXG on March 19, 2019

Battery Optimization

Optimize for battery life

电池优化-官网 Doze and App Standby Doze-低功耗模式如果用户设备未插接电源、处于静止状态一段时间且屏幕关闭，设备会进入低电耗模式。在低电耗模式下，系统会尝试通过限制应用对网络和 CPU 密集型服务的访问来节省电量。这还可以阻止应用访问网络并推迟其作业、同步和标准闹铃。系统会定期退出低电耗模式一会儿，好让应用完成其已推迟的 Activit...

Posted by LXG on March 12, 2019

查理·芒格语录

Charlie Thomas Munger

穷查理宝典总结-简书人类误判心理学奖励和惩罚超级反应倾向喜欢/热爱倾向讨厌/憎恨倾向避免怀疑倾向避免不一致倾向好奇心倾向康德式公平倾向妒忌倾向回馈倾向受简单联想影响的倾向 ...

Posted by LXG on March 2, 2019

阿甘正传

Forrest Gump

阿甘正传-豆瓣 Life was like a box of chocolates, you never know what you’re gonna get. Stupid is as stupid does. Miracles happen every day. I don’t know if we each ...

Posted by LXG on February 24, 2019

Android InputManagerService

IMS的工作原理

注：下文摘自RickAi的博客从源码角度看InputManagerService-RickAi 类图整体流程图用户轻点屏幕，linux 内核产生中断，向 /dev/input/ 目录下的设备文件 eventxx 下入数据 native 层，EventHub 通过 epoll 监测到文件被写入，使用 inotify 读取文件中的数据 InputReader 将事...

Posted by LXG on February 20, 2019

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