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Content Providers内容提供者 In this document本文档 1. Content provider basics 内容提供者基础 2. Querying a content provider 查询内容提供者 3. Modifying data in a provider 修改
Bound Services邦定服务 A bound service is the server in a client-server interface. A bound service allows components (such as activities) to bind to the service, send requests, receive responses, and eve
A Service is an application component that can perform long-running operations in the background and does not provide a user interface. Another application component can start a service and it will co
An application usually contains multiple activities. Each activity should be designed around a specific kind of action the user can perform and can start other activities. For example, an email applic
Loader 加载器 Introduced in Android 3.0, loaders make it easy to asynchronously load data in an activity or fragment. Loaders have these characteristics:在Android3.0包括进来，加载器使得在活动和碎片中更容易加载异步数据，它有这些特性:
A Fragment represents a behavior or a portion of user interface in an Activity. 在一个Activity活动中,一个Fragment代表一个行为或者用户界面的一部分 You can combine multiple fragments in a single activity to build a multi-pan
数据类型的区别： Java的数据类型分两大类:基本类型,引用类型 基本类型共有8种: (a)其中整型数据类型占4种:byte,short,int,long (b)小数类型2种:float,double (c)布尔类型:boolean (d)字符类型:char 引用类型:所有由类定义的变量，都是引用类型 OK，在Java中就这些数据类型。没有了C语言中的：unsi
语言的历程 自从人，可以用声音进行思想交流沟通，用文字记录思想，人类就具备了一种强大的武器—语言. 借此武器，人类将与自己与世界的其他万事万物区别开来了,成为了世界万物的举宰。 具备主宰其他事物的绝对权力，可以毫无约束
Activities活动 An Activity is an application component that provides a screen with which users can interact in order to do something, such as dial the phone, take a photo, send an email, or view a map.
Application Fundamentals应用基础 Android applications are written in the Java programming language. Android应用是用Java 语言写的 The Android SDK tools compile the code—along with any data and
What is Android? Android is a software stack for mobile devices that includes an operating system, middleware and key applications. Android是一个包括了操作系统，中间件有关键应用的移动设备软件集. The Android SDK provides the
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