Android Tutorial

By : Ketan Bhimani

114 

Registering Content Providers

If your application acts as a content provider, effectively exposing a

shared data service for use by other applications, it must declare

this capability within the Android manifest file using the <provider>

tag. Configuring a content provider involves determining what

subsets of data are shared and what permissions are required to

access them, if any.

Working with Permissions

The Android operating system has been locked down so that

applications have limited capability to adversely affect operations

outside their process space. Instead, Android applications run

within the bubble of their own virtual machine, with their own Linux

user account (and related permissions).

Registering Permissions Your Application Requires

Android applications have no permissions by default. Instead, any

permissions for shared resources or privileged access—whether it’s

shared data, such as the Contacts database, or access to

underlying hardware, such as the built-in camera—must be

explicitly registered within the Android manifest file. These

permissions are granted when the application is installed.

The following XML excerpt for the preceding Android manifest file

defines a ermission using the <uses-permission> tag to gain access

to the built-in camera:

A complete list of the permissions can be found in the

android.Manifest.permission class. Your application manifest should