Android: content package Learning

Next, let's take a look at the Android. content. asyncqueryhandler class.

 

Brief Introduction:

A helper class to help make handling asynchronousContentresolverQueries easier.

It is a help class that helps process asynchronous contentresolver queries. It inherits from handler.

 

Its constructor:

PublicAsyncqueryhandler (Contentresolver Cr)

It is clear that you only need to throw a contentresolver object.

 

It provides the following methods: startdelete, startquery, startupdate, startinsert, and some corresponding callback functions: ondeletecomplete, onquerycomplete, onupdatecomplete, and oninsertcomplete.