This document provides an overview of content providers in Android. It discusses how content providers allow apps to share data by presenting it as one or more tables. The content resolver accesses the content provider using query(), insert(), update(), and delete() methods. A content URI uniquely identifies data in a provider. Cursors provide random read-write access to query results from a content provider. The document also provides an example Birthday Saver app project that demonstrates using a content provider to store and retrieve birthday data from a database in another app.

1. Content Provider In
Android
Presented By:
Priti Telmore

2. Contents:
o Objective
o Introduction
o Built-in Content provider
o Content resolver
o URI
o Cursor
o Project of Birthday Saver

3. Lets Start With our Objective…
An Android app by default cannot access another
app’s data. This is the cornerstone of Android
security, the principle of sandboxing. But often, you
do want an app to share some data with others.
Content providers are such an interface to data so
that the data cab be mashed together across apps.
• Why content providers
• Using existing content providers
• Creating a content provider
• Intelligent data loading

4. Introduction:
• A Content Provider is an
application component that
shares data with other
application.
• Various system content
providers manage the users
contacts, call logs etc.
• Typically a content provider
presents data as one or more
tables, similar to tables in a
database.

5. How to Access ?
Content
Provider
Cursor
Content
Resolver
Cursor
Adapter
ListView
Activity

6. Built-in Content Provider:
Content Provider

7. Content Resolver:
A client application accesses the data from a content provider with a
Content Resolver object.
The content resolver object provides - query(),insert(),update() and
delete() methods for accessing data from a content provider.
Content Resolver URI
Content Provider
Query()
Insert()
Update()
Delete()

8. URI:
• Uniform Resource
Identifier.
• A Content URI is a URI
that identifies data in
a provider.
• When you call a client
method to access a
table in a provider,
the content URI for
the table is one of the
arguments.
content://com.example.provider/articles
Scheme Authority Path
1. content://browser/bookmarks
2. content://contacts/people
3. content://contacts/people/3
4. content://media/internal/images

9. CURSOR:
Cursor is an interface that provides random read-write access to the
result of a database query from a content provider.
A cursor is a collection of rows, Random means (you can move forward
and backwards)
All field access methods are based on column number. You have to
convert column name to a column number first
You can also find size / traverse result set easily.
Cursor cur;
for( cur.moveToFirst();
!cur.isAfterLast();
cur.moveToNext()) {
}

10. BIRTHDAY_SAVER APP USING CONTENT PROVIDER:

13. activity_main.xml :This is the layout of project

15. Birthday.java :This is the java class for content provider and database

23. Output: 1. First insert the data

24. Output: 2. Then press ‘Add a new Birthday’ button it will toast the
no of data inserted.

25. Output: 3. To show the inserted data press ‘Show all Birthday’ button
It will show all the birthdays inserted.

26. Output: 4. By pressing ‘Delete all Birthday’ button All the records
will be deleted and shown by toasting.

27. THANK YOU