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nullColumn Hack

As seen in: CSDN
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Android SQLite增删改查（java版）

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By return userInfo, nullColumn Hack
| CSDN
一.创建用户表 使用SQLite数据库，必须继承SQLiteOpenHelper 编写类名为UserDbHelper 继承SQLiteOpenHelper public class UserDbHelper extends SQLiteOpenHelper { private static UserDbHelper sHelper; private static final String DB_NAME = "user_info.db"; private static final int VERSION = 1; public UserDbHelper(@Nullable Context context, @Nullable String name, @Nullable SQLiteDatabase.CursorFactory factory, int version) { super(context, name, factory, version); } public synchronized static UserDbHelper getInstance(Context...
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