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一般android开发语言目前主流的语言有一下几块：

java--android app开发，android framework

kotlin--android app开发

c++/c ---android framework开发，linux内核开发

简单说安卓开发做什么可以从3个部分划分

1、安卓app层面开发（这个太卷基本35岁以后工作比较难找）

（一般就是手机上那些app开发，范围最广，也是安卓成功关键），主要就是开发手机上各种app，门槛较低，人多，现在工作不太好找

2、安卓framework系统框架开发（这个做的越久越吃香，35岁以后受欢迎，因为年龄太小大家都不信可以framework上面有很大修为） 这个属于安卓系统框架，也是安卓区别于其他Linux系统的关键，这部分技术门槛较低，一般人可能比较难做，都是有app或者嵌入式开发基础人来做，我就是这个framework开发相关，就业环境一直很好，人才需求量比app少，但是这方面人才太少了，还是因为有门槛比app难，收入算很不错

3、安卓内核驱动相关，这个一般和Linux驱动开发区别不大，一般都是做嵌入式的人开发

android app现在已经夕阳西下，一日不如一日，基本上今年android app开发很多都找不到工作，这里不建议你继续在app层面卷了哈，大部分app开发久了都有感觉自己被重复的业务包围，没有很多技术沉淀，自己干了8年感觉和2-3年同学没有本质差别都是写业务。

如果你还想要要做android的话，我建议你走android高门槛，高难度的android framework方向。

这里推荐一下国内android framework大神的一些blog，可以直接关注

Android Framework开发rom实战合集课表/车载车机手机高级系统开发工程必会技能

Android Framework最难模块WMS实战课表作业-手机车机系统开发必备

千里马android framework车机车载手机智能驾驶双屏互动实现方案

第二节-安卓多屏双屏实战车载车机智能驾驶舱开发/千里马android framwork开发

车载多屏互动联动动画版本同屏幕大小情况方案设计--众筹项目 这里也分享一点我的以前学习framework经验

android framework开发说实话我本人尝试过看书:

比如林学森(感觉内容一般不太适合上手)，罗升阳(属于作者自己玩那种……根本一点不考虑读者水平，看完就觉得作者厉害，自己啥也学不到)，android 深入卷3，这个书还可以一看就是实战派，但是没啥案例，加上太老(因为看过1，2比较水……) 看书基本上对应app开发者很难真正学会framework精华……因为只看到表没看到内在，为啥?因为书根本就不是给初学者看的，根本没有实战永远framework门外汉，所以不建议看书学习

另一种学习视频方式:

这个方式其实是我真正学会framework，目前也成为合格framework工程师关键 目前市面上基本很少framework学习相关视频，找了好多，b站看了一些比较老的免费，但是太老知识也不系统，然后就B站找到一个叫做“千里马学框架”的up主，它一个国内一个手机大厂工程师兼职录的 主讲人叫""千里马""，具体课程链接就不给了，你可以去B站搜索一下千里马学框架，或者点击这里重大消息：Hal+perfetto-systrace+SurfaceFlinger合集新专题发布-千里马android framework实战开发_哔哩哔哩_bilibili，他出的视频android framework实战系列，确实还可以，看完后真的可以干起来可以实战编译修改自己rom

其他安卓机构……那framework实在是处于完全忽悠面试官水平，根本老师自己都不太懂 所以我比较推荐去看看千里马老师的android framework实战视频方式

最后一种看blog方式:

这个如果基础不好，我也不是很推荐，具体csdn 上framework blog可以看看，我一般也就遇到问题踩坑

好了就这些，每个人学习方式不一样，我只能说我自己确实通过b站那个千里马老师的视频学会的，入的门，不然估计还在app层卷，实在app感觉做的没意思没啥水平，现在自己也独立了有能力承担framework开发了，工作也不太吃力，希望对你有帮助

参考链接： mp.weixin.qq.com/s/Qv8z

参考视频学习链接：

车机车载双屏拖动移动实现-千里马WMS全网最强实战framework开发必备_哔哩哔哩_bilibili

学习过framework知识的一些课表：

你要是初学者，就老老实实的先学Java，然后再学Kotlin，虽然市面上大部分编程入门书都会直接推荐你学Kotlin，但实际上绝大多数项目都是Java+Kotlin混编，不学Java直接学Kotlin有点舍本逐末、脱离实际

不会Kotlin的Android开发，只能说对某些岗位而言，是减分项

但是不会Java的Android开发，在我看来都不算是Android开发，大概率找不到工作

结合Android SDK学好Java+Kotlin，然后你再考虑RN、flutter跨端这些，可以选择性的学