Android简析-阿里云

[Android AIDL] --- AIDL原理简析

上一篇文章已经讲述了如何在Android studio中搭建基于aidl的cs模型框架，只是用起来了，这次对aidl及cs端如何调用的原理进行简单分析 1 创建AIDL文件 AIDL 文件可以分为两类。一类是用来定义接口方法，声明要暴露哪些接口给客户端调用；一类用来声明实现了 Parcelabl...

Android推送全链路简析

前言国内的Android推送就是个悲剧国内Android缺少Google的生态，如Google的Paly Store，Google Mobile Services（GSM）等，导致衍生出很多畸形的产业，比如五花八门的APP市场，光怪陆离的推送平台，这里要说的是推送平台。Google本身...

开源Android容器化框架Atlas开发者指南

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Android O 后台startService限制简析

Android O 推出出了Background Execution Limits，减少后台应用内存使用及耗电，一个很明显的应用就是不准后台应用通过startService启动服务，这里有两个问题需要弄清楚，第一：什么状态下startService的属于后台启动service；第二：如果想要在后台s...

Android V1及V2签名原理简析

Android为了保证系统及应用的安全性，在安装APK的时候需要校验包的完整性，同时，对于覆盖安装的场景还要校验新旧是否匹配，这两者都是通过Android签名机制来进行保证的，本文就简单看下Android的签名与校验原理，分一下几个部分分析下：APK签名是什么APK签名如何保证APK信息完整性如何为...

Android中mmap原理及应用简析

mmap是Linux中常用的系统调用API，用途广泛，Android中也有不少地方用到，比如匿名共享内存，Binder机制等。本文简单记录下Android中mmap调用流程及原理。mmap函数原型如下：void *mmap(void *start,size_t length,int prot,int...

Android DEPPLINK、APPLink原理简析

APP开发中经常会有这种需求：在浏览器或者短信中唤起APP，如果安装了就唤起，否则引导下载。对于Android而言，这里主要牵扯的技术就是deeplink，也可以简单看成scheme，Android一直是支持scheme的，但是由于Android的开源特性，不同手机厂商或者不同浏览器厂...

Android 3G/4G流量上网原理简析

手机一般会提供两种上网方式：Wifi或者3G/4G上网，Wifi上网其实就是利用网卡通过以太网上网；3G/4G则是通过基带，利用蜂窝网络进行上网，之前已经简单的阐述了Wifi上网跟3G上网的区别，本文主要简述Android 3G/4G上网的流程及原理。无线上网硬件模型3G/4G上网协议ppp3G/4...

Android中Services简析

Services是Android中四大基础组件（Activities、 Services、 Content Providers、 BroadCast Receivers）之一，主要用于在后台长时间运行操作，不提供界面，如音乐播放器，关闭界面后还能继续播放。当页面需要交互时用线程。 &nb...

Android -- Camera源码简析，启动流程

com.android.camera.Camera.java，主要的实现Activity，继承于ActivityBase。 ActivityBase &nbs...

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更新时间 2024-02-23 14:00:37

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