Here is an example of creating a database in your cache directory:
java
public class CachedDatabase extends SQLiteOpenHelper {
public CachedDatabase(Context context, String name, SQLiteDatabase.CursorFactory factory, int version) {
super(context, new File(context.getCacheDir(), name).getAbsolutePath(), factory, version);
}
@Override public void onCreate(SQLiteDatabase db) {
// just for testing
db.execSQL("CREATE TABLE example (id INTEGER PRIMARY KEY AUTOINCREMENT, foo, bar, baz, qux)");
}
@Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}All you need to do is pass the absolute path as the name parameter in the constructor.
Tested just to make sure it was created in /data/data/[package_name]/cache:
java
CachedDatabase cachedDatabase = new CachedDatabase(this, "TEST", null, 1);
SQLiteDatabase database = cachedDatabase.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("foo", "foo");
values.put("bar", "bar");
values.put("baz", 123);
values.put("qux", true);
database.insert("example", null, values);Checking for the database:
bash
$ adb shell
$ run-as [YOUR_PACKAGE_NAME]
$ ls cache
TEST
TEST-journal