Android 性能优化(8)网络优化( 4)Optimizing App-Initiated Network Use
Optimizing App-Initiated Network Use
This lesson teaches you to
Network traffic initiated by your app can usually be significantly optimized, since you can plan for what network resources it needs and set a schedule for accessing them. By applying careful scheduling, you can create significant periods of rest for the device radio and, thereby, save power. There are several Android APIs that can help with network access scheduling, and some of these functions can coordinate network access for other apps, further optimizing battery performance.
This lesson teaches you how to reduce battery consumption by applying techniques for optimizing app-initiated network traffic.
Batch and Schedule Network Requests
On a mobile device, the process of turning on the radio, making a connection, and keeping the radio awake uses a large amount of power. For this reason, processing individual requests at random times can consume significant power and reduce battery life. A more efficient approach is to queue a set of network requests and process them together. This allows the system to pay the power cost of turning on the radio just once, and still get all the data requested by an app.
Using a network access scheduler API for queuing and processing your app data requests can significantly increase the power efficiency of your app. Schedulers conserve battery power by grouping requests together for the system to process. They can further improve efficiency by delaying some requests until other requests wake up the mobile radio, or waiting until the device is charging. Schedulers defer and batch network requests system-wide, across all apps on the device, which gives them an optimizing advantage over what any individual app can do.
Choosing a batch-and-scheduling API
Android provides three different APIs for your app to batch and schedule network requests. For most operations, these techniques are functionally equivalent. These APIs are listed in the following table with the most highly recommended first.
Scheduler | Requirements | Implementation Ease |
---|---|---|
GCM Network Manager | GCM Network Manager requires that your app use the Google Play services client library, version 6.1.11 or higher — use the latest available version. | Straightforward |
Job Scheduler | Job Scheduler does not require Google Play services, but is available only when targeting Android 5.0 (API level 21) or higher. | Straightforward |
Sync Adapter for scheduled syncs | Sync Adapter does not require the Google Play services client library and has been available since Android 2.0 (API level 5). | Complex |
Note: For scheduled data synchronization, you should always prefer GCM Network Manager or Job Scheduler over Sync Adapter if your requirements allow it.
Allow System to Check for Connectivity
One of the most serious and unexpected causes of battery drain is when a user travels beyond the reach of any cell tower or access point. In this situation, the user is typically not using their device, but they notice the device getting warm, and then see that the battery is low or has run out.
In this scenario, the problem is that an app is running a background process that keeps waking up the mobile radio at regular intervals to search for a cellular signal, but finds none. Searching for a cell signal is one of the most power-draining operations there is.
The way to avoid causing this kind of problem for a user with your app is to use a battery-efficient method for checking connectivity. For app-initiated network requests, use a scheduler, which automatically usesConnectivity Manager to check for connectivity before calling into your app. As a result, if there's no network, the Connectivity Manager conserves battery because it performs the connectivity check itself, without loading the app to run the check. Battery is further conserved because schedulers use exponential backoff to check for connectivity less frequently as time progresses.
Android 性能优化(8)网络优化( 4)Optimizing App-Initiated Network Use的更多相关文章
- Android性能优化系列---管理你的app内存
文章出处:http://developer.android.com/training/articles/memory.html#YourApp Random-access memory(RAM)在任 ...
- Android 性能优化(4)Optimizing Layout Hierarchies:用Hierarchy Viewer和Layoutopt优化布局
Optimizing Layout Hierarchies This lesson teaches you to Inspect Your Layout Revise Your Layout Use ...
- Android 性能优化的方面方面都在这儿
又到周六了,鸿洋的不定期的周六放送又来了~~这次来谈谈性能优化吧.大家在工作中或多或少都会拿自家的应用和竞品app做比对,不可避免的需要做一些app性能优化的活.很多时候可能是策略上的调整,不过还是有 ...
- android app性能优化大汇总(google官方Android性能优化典范 - 第2季)
Google前几天刚发布了Android性能优化典范第2季的课程,一共20个短视频,包括的内容大致有:电量优化,网络优化,Wear上如何做优化,使用对象池来提高效率,LRU Cache,Bitmap的 ...
- Android性能优化系列之App启动优化
Android性能优化系列之布局优化 Android性能优化系列之内存优化 Android性能优化系列之apk瘦身 应用的启动速度缓慢是我们在开发过程中常常会遇到的问题,比方启动缓慢导致的黑屏.白屏问 ...
- Android 性能优化(5)网络优化 (1) Collecting Network Traffic Data 用Network Traffic tool :收集传输数据
Collecting Network Traffic Data 1.This lesson teaches you to Tag Network Requests 标记网络类型 Configure a ...
- Android性能优化问题总结
性能优化这块,分为UI性能优化.内存优化.数据库优化.网络优化.耗电优化等等.可以从1.如何发现问题,2.怎么解决问题,3.解决效果对比,这几个方面去描述.举个简单例子——UI优化,可以从 UI出现什 ...
- Android性能优化之渲染
Google近期在Udacity上发布了Android性能优化的在线课程,目前有三个篇章,分别从渲染,运算与内存,电量三个方面介绍了如何去优化性能,这些课程是Google之前在Youtube上发布的A ...
- Android 性能优化探究
使用ViewStub动态载入布局.避免一些不常常的视图长期握住引用: ViewStub的一些特点: 1. ViewStub仅仅能Inflate一次,之后ViewStub对象被置空:某个被ViewStu ...
- 我把阿里、腾讯、字节跳动、美团等Android性能优化实战整合成了一个PDF文档
安卓开发大军浩浩荡荡,经过近十年的发展,Android技术优化日异月新,如今Android 11.0 已经发布,Android系统性能也已经非常流畅,可以在体验上完全媲美iOS. 但是,到了各大厂商手 ...
随机推荐
- Ubuntu 16.04无损分区大小调整工具Gparted
安装: sudo apt-get install gparted 使用: 注意: 这款软件可以调整分区大小,且支持无损,但是对于/根目录的分区无法调整,但是它提供ISO工具,可以启动后进行调整. 下载 ...
- 奥多朗WIFI 插座
https://aoduolang.tmall.com/category-1089563810.htm?spm=a1z10.1-b.w11212542-12917613245.12.tTWFSc&am ...
- kkpager的改进,Ajax数据变化但是页码不变的问题
原文:http://blog.csdn.net/xiaojian1018/article/details/45564051 kkpager 是一个简单分页展示插件,需要依赖jquery.下载地址:ht ...
- 关于错误 e297: write error in swap file;E297: 交换文件写入错误
在linux系统下修改文件vim的时候,忽然报错 E297: 交换文件写入错误 或者 e297: write error in swap file 原因:硬盘空间不足,我去,就剩下16M了
- Python学习系列之format用法
format是代替%s格式的方法 不需要理会数据类型的问题,在%s方法中的%s只能代替字符串类型 填充方式十分灵活,对其方式十分强大 format填充字符串 通过位置来填充字符串 #format会把参 ...
- JAVA OO之 类、对象、包
类 类是具有相同属性和行为的一组对象的集合. public class HomeWork1 { public static void main(String[] args) { MyPhone mp= ...
- Android WebView开发常见问题
1.加入权限:AndroidManifest.xml中必须使用许可"android.permission.INTERNET",否则会出Web page not available错 ...
- Ubuntu利用TCP协议来获取server时间
Linux利用TCP协议来获取server时间 这里使用Unix网络编程里面的一个小程序,该client建立一个到server的TCP连接,然后读取由server以直观可读格式简单地送回的当前时间和日 ...
- 依赖注入【转自知乎 PHP】
第一章:小明和他的手机 从前有个人叫小明 小明有三大爱好,抽烟,喝酒…… 咳咳,不好意思,走错片场了.应该是逛知乎.玩王者农药和抢微信红包 <img src="https://pic1 ...
- loj 6034 线段游戏
题目大意: 给出若干条线段,用 (x1,y2),(x2,y2) 表示其两端点坐标,现在要求支持两种操作: 0 x1 y1 x2 y2 表示加入一条新的线段 (x1,y2),(x2,y2) 1 x0 询 ...