This is often the case for all source IDs generated for assets which are in line with records. operating with resources Android deals another listing the place you could retain records to be incorporated within the package deal: /assets. It’s on the similar point as /res, that means it’s now not a part of the /res subdirectories. The documents in /assets don't generate IDs in R. java; you need to specify the dossier route to learn them. The dossier course is a relative course beginning at /assets. you are going to use the AssetManager category to entry those records: //Note: Exceptions aren't proven within the code String getStringFromAssetFile(Activity job) { AssetManager am = task. getAssets(); InputStream is = am. open("test. txt"); String s = convertStreamToString(is); is. close(); go back s; } 15967ch03. indd fifty nine 6/5/09 11:18:22 AM 60 bankruptcy three ■ utilizing assets, content material prone, aND INteNtS Reviewing the assets listing constitution In precis, here's a speedy examine the general assets listing constitution: /res/values/strings. xml /colors. xml /dimens. xml /attrs. xml /styles. xml /drawable/*. png /*. jpg /*. gif /*. nine. png /anim/*. xml /layout/*. xml /raw/*. * /xml/*. xml /assets/*. */*. * ■Note merely the /assets listing, simply because it’s now not lower than the /res listing, can comprise an arbitrary checklist of subdirectories. any other listing could have documents in simple terms on the point of that listing and no deeper. this is often how R. java generates identifiers for these records. allow us to finish this part on assets by means of quick enumerating what you will have discovered approximately assets up to now. you recognize the kinds of assets supported in Android and also you understand how you can create those assets in XML documents. you understand how source IDs are generated and the way to take advantage of them in Java code. you furthermore mght realized that source identity iteration is a handy scheme that simplifies source utilization in Android. ultimately, you discovered tips on how to paintings with uncooked assets and resources. With that, we'll now flip our consciousness to the part on content material services, the place you are going to discover ways to paintings with facts on Android. figuring out content material companies Android permits you to disclose your facts assets (or info prone) via a representa- tional nation transfer–like (REST-like) abstraction referred to as a content material supplier. A SQLite database on an Android gadget is an instance of a knowledge resource for you to encapsulate right into a content material supplier. To retrieve info from a content material supplier or keep info right into a content material supplier, you might want to use a collection of REST-like URIs. for instance, should you have been to retrieve a suite of books from a content material supplier that's an encapsulation of a publication database, it is very important use a URI like this: content://com. android. booklet. BookProvider/books 15967ch03. indd 60 6/5/09 11:18:22 AM bankruptcy three ■ utilizing assets, content material prone, aND INteNtS sixty one To retrieve a selected publication from the e-book database (book 23), it is very important use a URI like this: content://com. android. publication. BookProvider/books/23 you'll discover during this part how those URIs translate to underlying database-access mechanisms.