Introduction

Tagging is used and needed by just about any application. Browser (URL tagging), Music (id3), Photos (EXIF + user tags) or videos (especially matroska has strong tagging possibilities). A central tagging provider would allow tagging of any content by any application which should simplify application development and improve the user expirience.

Features

• TagProvider (org.openintents.tags)
• ContentIndexProvider (org.openintents.contentindices)
• TagsView
• ContentBrowserView
• TagsAddView

There is/will be a view for adding a new tag and browsing all URIs.

The content provider allows to query for all tags, for content with a given tag and for tags for a given content.

Details have been moved to CentralTaggingDetails

Use of ContentBrowserView

Open the content browser. Type in a tag, see how the list is filled as soon as an entry is found for a tag.

A selected list item can be viewed (if a VIEW activity is installed for that type of content) and the tag can be removed from the content.

You can tag content by using the Tag menu. Select a content-type (=package) and pick a content from there. In the next popup dialog you can enter a tag name.

Use of TagProvider

When using the TagProvider you have to provide a projection. This should consist of a list of constants defined by Contents (when querying Contents) or by Tags (when quering Tags).

• get a list of all tags

getContentResolver().query(Contents.CONTENT_URI, projection, Contents.TYPE + " like 'TAG%'", null)

• get a list of tags for a content uri

getContentResolver().query(Tags.CONTENT_URI, projection, Tags.URI_2 + " = '?', new String{contentUri.toString()}, null)

• get a list of content for a tag

getContentResolver().query(Tags.CONTENT_URI, projection, Tags.URI_1 + " = '?', new String{tag}, null)

Intents

• Start the following activity to tag a content.

new Intent (Intent.TAG_CONTENT, Tags.CONTENT_URI).putExtra(Tags.CONTENT_EXTRA, myContentUri) This will open a view where you can add a new tag to your content.