[翻译]Android KitKat instuduce.

Welcome to Android 4.4 KitKat!

欢迎到Android 4.4奇巧巧克力!

Android KitKat brings all of Android's most innovative, most beautiful, and most useful features to more devices everywhere.

android 奇巧巧克力版本将所有Android中最创新的,最美丽的,最有用的功能提供给所有地方的大多数设备

This document provides a glimpse of what's new for developers.

这个文档提供大概概述给开发人员.

Find out more about KitKat for consumers atwww.android.com.

对于消费者寻找更多关于奇巧巧克力请到www.android.com.

Making Android for everyone

让Android给每一个人.

Android 4.4 is designed to run fast, smooth, and responsively on a much broader range of devices than ever before

Android4.4被设计得比从前运行快速,平滑,响应范围更广泛.

— including on millions of entry-level devices around the world that have as little as 512MB RAM.

包含数百万计的入门级设备范围（这些入门设备最少512MB的内存）

KitKat streamlines every major component to reduce memory use and introduces new APIs and tools to help you create innovative, responsive,

KitKat简化每一个主要组件去减少内存的使用然后介绍新的API和工具去帮助你创建革新的,敏感的,高效内存的应用程序

memory-efficient applications.

OEMs building the next generation of Android devices can take advantage of targeted recommendations and options to run 

原始设备制造厂商下一代Android设备可以利用"针对性的建议和操作"去使Android4.4运行更高效.

Android 4.4 efficiently,

 

even on low-memory devices. Dalvik JIT code cache tuning, kernel samepage merging (KSM),

即使在低内存的设备,Dalvik JIT代码缓存优化,内核samepage合并(KSM),

swap to zRAM, and other optimizations help manage memory.

互换zRAM，和其它优化管理内存.

New configuration options let OEMs tune out-of-memory levels for processes, set graphics cache sizes, control memory reclaim, and more.

新的配置操作让OEMs为进程调优内存不足等级,设置图形缓存大小,控制内存改造,和更多.

In Android itself, changes across the system improve memory management and reduce memory footprint.

在Android它本身,改变整个系统提高内存管理和减少内存轨迹.

Core system processes are trimmed to use less heap, and they now more aggressively protect system memory from apps consuming large

核心系统进程堆的使用被减少,然后现在更多积极保护系统内存由于应用程序消耗大量的RAM.

amounts of RAM.

When multiple services start at once — such as when network connectivity changes — Android now launches the services serially,

当多个服务一旦开始--例如当网络链接变化--Android现在连续地启动服务.

in small groups, to avoid peak memory demands.

以小组的形式,去避免峰值内存需求.

For developers, Android 4.4 helps you deliver apps that are efficient and responsive on all devices.

对于开发者,Android4.4帮助你有效的提交apps和在所有设备上运行.

A new API, ActivityManager.isLowRamDevice(), lets you tune your app's behavior to match the device's memory configuration.

一个新的API,ActivityManager.isLowRamDevice(),让你优化你的应用程序的行为去适应设备内存的配置.

You can modify or disable large-memory features as needed,

如果需要你可以修改和禁用大内存功能,

depending on the use-cases you want to support on entry-level devices.

依靠这个实用的设置你可以支持入门级设备.

Learn more about optimizing your apps for low-memory devices here.

学习更多关于优化你的app给低内存设备看这里.

New tools give also give you powerful insight into your app's memory use. The procstats tool details memory use over time,

新的工具提供也使你强有力的洞察你app中内存的使用.procstats tool 详细说明内存使用随着时间的推移.

with run times and memory footprint for foreground apps and background services.

对于前景app和后台服务的运行时间和内存占用.

An on-device view is also available as a new developer option.

一个在设备上的view也可以作为一个新的开发者选择.

The meminfo tool is enhanced to make it easier to spot memory trends and issues,

meminfo工具被加强使得它很容易辨别内存趋势和问题,

and it reveals additional memory overhead that hasn't previously been visible.

然后它显示之前未被可见额外的内存开销.