Android应用程序组件content provider 的相关内容

Android应用程序组件Content Provider应用实例（2）

第一点是我们在ArticlesProvider类的内部中定义了一个DBHelper类，它继承于SQLiteOpenHelper类，它用是用辅助我们操作数据库的。使用这个DBHelper类来辅助操作数据库的好处是只有当我们第一次对数据库时行操作时，系统才会执行打开数据库文件的...

Android应用程序组件Content Provider的启动过程源代码分析（3）

Step 7. ActivityManagerService.getContentProviderImpl 这个函数定义在frameworks/base/services/java/com/android/ser...

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Android应用程序组件Content Provider简要介绍和学习计划

在Android系统中，Content Provider作为应用程序四大组件之一，它起到在应用程序之间共享数据的作用，同时，它还是标准的数据访问接口。前面的一系列文章已经分析过Android应用程序的其它三大组件（Activity、Service和Broadcast Rec...

Android应用程序组件Content Provider应用实例（4）

         程序使用到的界面文件定义在res/layout目录下，其中，main.xml文件定义MainActivity的界面，它的内容如下所示： <?xml version="1.0" encoding="utf-8...

Android应用程序组件Content Provider应用实例（5）

        接下来再来看程序的配置文件AndroidManifest.xml： <?xml version="1.0" encoding="utf-8"?>   <manifest xml...

Android应用程序组件Content Provider的启动过程源代码分析（2）

Step 5. ActivityThread.getProvider 这个函数定义在frameworks/base/core/java/android/app/Activi...

Android应用程序组件Content Provider应用实例（1）

上文简要介绍了Android应用程序组件Content Provider在应用程序间共享数据的原理，但是没有进一步研究它的实现。本文将实现两个应用程序，其中一个以Content Provider的形式来提供数据访问入口，另一个通过这个Content Provid...

Android应用程序组件Content Provider应用实例（3）

下面是ArticlesAdapter类的实现，它实现在src/shy/luo/ArticlesAdapter.java文件中： package shy.luo.article; import ...

Android应用程序组件Content Provider的启动过程源代码分析（1）

通过前面的学习，我们知道在Android系统中，Content Provider可以为不同的应用程序访问相同的数据提供统一的入口。Content Provider一般是运行在独立的进程中的，每一个Content Provider在系统中只有一个实例存在，其它应用程序首先要找到...

Android应用程序组件Content Provider的启动过程源代码分析（7）

函数installProvider执行完成以后，返回到Step 16中的instalContentProviders函数中，执行下面语句： try { ActivityManager...

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