Android Tutorial

By : Ketan Bhimani

348 

a content provider is to store the information you want to share in

a SQLite database.

One example is a content provider for GPS track points. This

content provider enables users of it to query for points and store

points. The data for each point contains a time stamp, the latitude

and longitude, and the elevation.

Implementing a Content Provider Interface

Implementing a content provider interface is relatively

straightforward. The following code shows the basic interface that

an application needs to implement to become a content provider,

requiring implementations of five important methods:

public class TrackPointProvider extends ContentProvider {
public int delete(Uri uri,
String selection, String[] selectionArgs) {
return 0;
}
public String getType(Uri uri) {
return null;
}
public Uri insert(Uri uri, ContentValues values) {
return null;
}
public boolean onCreate() {
return false;
}
public Cursor query(Uri uri, String[] projection,
String selection, String[] selectionArgs, String sortOrder) {
return null;
}
public int update(Uri uri, ContentValues values,
String selection, String[] selectionArgs) {
return 0;
}
}