ContentProvider.OnCreate Method
Definition
Important
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Implement this to initialize your content provider on startup.
[Android.Runtime.Register("onCreate", "()Z", "GetOnCreateHandler")]
public abstract bool OnCreate ();[<Android.Runtime.Register("onCreate", "()Z", "GetOnCreateHandler")>]
abstract member OnCreate : unit -> boolReturns
true if the provider was successfully loaded, false otherwise
- Attributes
Remarks
Implement this to initialize your content provider on startup. This method is called for all registered content providers on the application main thread at application launch time. It must not perform lengthy operations, or application startup will be delayed.
You should defer nontrivial initialization (such as opening, upgrading, and scanning databases) until the content provider is used (via #query, #insert, etc). Deferred initialization keeps application startup fast, avoids unnecessary work if the provider turns out not to be needed, and stops database errors (such as a full disk) from halting application launch.
If you use SQLite, android.database.sqlite.SQLiteOpenHelper is a helpful utility class that makes it easy to manage databases, and will automatically defer opening until first use. If you do use SQLiteOpenHelper, make sure to avoid calling android.database.sqlite.SQLiteOpenHelper#getReadableDatabase or android.database.sqlite.SQLiteOpenHelper#getWritableDatabase from this method. (Instead, override android.database.sqlite.SQLiteOpenHelper#onOpen to initialize the database when it is first opened.)
Java documentation for android.content.ContentProvider.onCreate().
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.