Android sqlite数据库自定义存放路径办法参考(未验证)

public class TestDB extends SQLiteOpenHelper {
    private static final String DATABASE_NAME = "usertest.db";
    private static final int DATABASE_VERSION = 1;

    public TestDB (Context context){
        super(context, context.getExternalFilesDir(null).getAbsolutePath() + "/" +  DATABASE_NAME, null, DATABASE_VERSION );
    }
    ...
}

http://stackoverflow.com/questions/4806181/sqlite-database-on-sd-card