Android-SQLite无法读取第0行第1列错误

我有一个应用程序，它填充11个数据库表，然后获取数据并将其显示在LogCat中。在我将主键更改为Autoincrement之前，我的应用程序一直工作。所有桌子的变化都很好，但有一张桌子给了我一个问题

这是我的DBAdapter，也是生成用户数据库的部分（给我带来问题的部分）：

当然，在下面几行中，在我的DBAdapter的

onCreate

方法中，我有：

        database.execSQL(DATABASE_CREATE_AUTHORIZED_PERSONNEL_TABLE);

我还有一个userClass，如下所示：

public class UserClass {

private String _id;
private String username;
private String password;
private String l_name;
private String m_name;
private String f_name;
private String office;
private String Cellphone_Number;
private String Landline;
private String Address;
private String Email;


//constructor - empty
public UserClass(){

}

//constructor
public UserClass(String userName, String passWord, String LastName, String MiddleName, String FirstName, 
                    String Office, String cpNumber, String landLine, String Address, String Email){
    this.username = userName;
    this.password = passWord;
    this.l_name = LastName;
    this.m_name = MiddleName;
    this.f_name = FirstName;
    this.office = Office;
    this.Cellphone_Number = cpNumber;
    this.Landline = landLine;
    this.Address = Address;
    this.Email = Email;

}

我有我的二传手和接球手在那些建设者之后

我还有一个UserDBAdapter类，负责数据库查询和数据获取，它是我的数据访问对象。这是

addUser（UserClass用户）

方法：

//add one user
public long addUser(UserClass user){

    ContentValues values = new ContentValues();

    values.put(USERNAME, user.getUsername());
    values.put(PASSWORD, user.getPassword());
    values.put(L_NAME, user.getL_name());
    values.put(M_NAME, user.getM_name());
    values.put(F_NAME, user.getF_name());
    values.put(OFFICE, user.getOffice());
    values.put(CELLPHONENUMBER, user.getCellphone_Number());
    values.put(LANDLINE, user.getLandline());
    values.put(ADDRESS, user.getAddress());
    values.put(EMAIL, user.getEmail());

    return this.mDB.insert(TABLE_USER, null, values);
}

这是获取所有用户及其详细信息的方法： //获取所有用户 公共列表getAllUsers（）{ List contactList=new ArrayList（）； //选择所有查询 String selectQuery=“SELECT*FROM”+表格\用户

    Cursor cursor = mDB.rawQuery(selectQuery, null);

    // looping through all rows and adding to list
    if (cursor.moveToFirst()) {
        do {
            UserClass user = new UserClass();

            user.set_id(cursor.getString(cursor.getColumnIndex(USER_ID) ) );
            user.setUsername(cursor.getString(cursor.getColumnIndex(USERNAME) ) );
            user.setPassword(cursor.getString(cursor.getColumnIndex(PASSWORD) ) );
            user.setL_name(cursor.getString(cursor.getColumnIndex(L_NAME) ) );
            user.setM_name(cursor.getString(cursor.getColumnIndex(M_NAME) ) );
            user.setF_name(cursor.getString(cursor.getColumnIndex(F_NAME) ) );
            user.setOffice(cursor.getString(cursor.getColumnIndex(OFFICE) ) );
            user.setCellphone_Number(cursor.getString(cursor.getColumnIndex(CELLPHONENUMBER) ) );
            user.setLandline(cursor.getString(cursor.getColumnIndex(LANDLINE) ) );
            user.setAddress(cursor.getString(cursor.getColumnIndex(ADDRESS) ) );
            user.setEmail(cursor.getString(cursor.getColumnIndex(EMAIL) ) );


            // Adding contact to list
            contactList.add(user);
        } while (cursor.moveToNext());
    }

    // return contact list
    return contactList;
}

在我的活动中，我将填充数据库并获取数据：

public void initializeUserDB(){
    Log.d("Users", "Inserting . . .");

    userDB.open();
    userDB.addUser(new UserClass("user1", "1234", "Doe", "Smith", "John", "Makati", 
                                    "09123456789", "1234567", "Lorem Ipsum Dolor", "LoremIpsum@Dolor.com"));
    userDB.addUser(new UserClass("user2", "1234", "Smith", "Doe", "John", "Makati", 
                                    "cpNumber", "Landline", "address", "electronic Mail Address"));


    //Check if they were inputted properly
    Log.d("Reading: ", "Reading all users . . ."); 
    List<UserClass> users = userDB.getAllUsers();       

    for (UserClass user : users) {
        String log = "Id: " + user.get_id() + "\n" +
                        "Username: " + user.getUsername() + "\n" +
                        "Password: " + user.getPassword() + "\n" +
                        "Last Name: " + user.getL_name() + "\n" +
                        "Middle Name: " + user.getM_name() + "\n" +
                        "First Name: " + user.getF_name() + "\n" +
                        "Office: " + user.getOffice() + "\n" +
                        "Cellphone Number: " + user.getCellphone_Number() + "\n" +
                        "Landline: " + user.getLandline() + "\n" +
                        "Address: " + user.getAddress() +"\n" +
                        "Email: " + user.getEmail();
            // Writing Contacts to log
        Log.d("Details: ", log);
    }
    userDB.close();
}

public void initializeUserDB（）{
Log.d（“用户”，“插入…”）；
userDB.open（）；
addUser（新的用户类（“user1”、“1234”、“Doe”、“Smith”、“John”、“Makati”），
“09123456789”、“1234567”、“Lorem Ipsum Dolor”LoremIpsum@Dolor.com"));
userDB.addUser（新的UserClass（“user2”、“1234”、“Smith”、“Doe”、“John”、“Makati”），
“电话号码”、“固定电话”、“地址”、“电子邮件地址”）；
//检查它们是否正确输入
Log.d（“读取：”，“读取所有用户…”）；
List users=userDB.getAllUsers（）；
for（用户类用户：用户）{
String log=“Id:”+user.get\u Id（）+“\n”+
用户名：“+user.getUsername（）+”\n+
密码：“+user.getPassword（）+”\n+
姓氏：“+user.getL\u Name（）+”\n+
中间名：“+user.getM_Name（）+”\n+
名：“+user.getF_Name（）+”\n”+
Office:“+user.getOffice（）+”\n”+
手机号码：“+user.getmobile\u Number（）+”\n+
固定电话：“+user.getLandline（）+”\n”+
地址：“+user.getAddress（）+”\n+
“电子邮件：”+user.getEmail（）；
//将联系人写入日志
Log.d（“详细信息：”，Log）；
}
userDB.close（）；
}

数据被正确插入，但是，在获取数据时，LogCat告诉我在我的userDBAdapter类中的

user.setEmail（cursor.getString（cursor.getColumnIndex（EMAIL））；

行有问题

我想我能够正确初始化我的电子邮件列，否则我的数据插入顺序会出错。如果我注释掉那一行，活动中的

user.getEmail（）；

方法将给我null

---

我对这个问题感到困惑，我正确地初始化了表并正确地插入了值，我不明白为什么我不能正确地获取值。

我又犯了一个简单的错误，对不起

在我的userDBAdapter类中，行

公共静态最终字符串EMAIL=“EMAIL”

应该是：

公共静态最终字符串EMAIL=“EMAIL”

public void initializeUserDB(){
    Log.d("Users", "Inserting . . .");

    userDB.open();
    userDB.addUser(new UserClass("user1", "1234", "Doe", "Smith", "John", "Makati", 
                                    "09123456789", "1234567", "Lorem Ipsum Dolor", "LoremIpsum@Dolor.com"));
    userDB.addUser(new UserClass("user2", "1234", "Smith", "Doe", "John", "Makati", 
                                    "cpNumber", "Landline", "address", "electronic Mail Address"));


    //Check if they were inputted properly
    Log.d("Reading: ", "Reading all users . . ."); 
    List<UserClass> users = userDB.getAllUsers();       

    for (UserClass user : users) {
        String log = "Id: " + user.get_id() + "\n" +
                        "Username: " + user.getUsername() + "\n" +
                        "Password: " + user.getPassword() + "\n" +
                        "Last Name: " + user.getL_name() + "\n" +
                        "Middle Name: " + user.getM_name() + "\n" +
                        "First Name: " + user.getF_name() + "\n" +
                        "Office: " + user.getOffice() + "\n" +
                        "Cellphone Number: " + user.getCellphone_Number() + "\n" +
                        "Landline: " + user.getLandline() + "\n" +
                        "Address: " + user.getAddress() +"\n" +
                        "Email: " + user.getEmail();
            // Writing Contacts to log
        Log.d("Details: ", log);
    }
    userDB.close();
}