Android的Sqlite插入错误

Question

我在Sqlite数据库中创建了一个表，当我想插入记录到这个表中我面对错误没有列名称column_name。

这是我Message.java类：

public class Messages { 
private int id = 0; 
private String message = ""; 
private String type = "0"; 
private String geolat = ""; 
private String geolng = ""; 
public Messages(){ 

} 

public Messages(int id,String message,String type,String geolat,String geolng) { 
    this.id = id; 
    this.message = message; 
    this.type = type; 
    this.geolat = geolat; 
    this.geolng = geolng; 
} 
public Messages(String message,String type,String geolat,String geolng) { 
    this.message = message; 
    this.type = type; 
    this.geolat = geolat; 
    this.geolng = geolng; 
} 

public String getGeolng() { 
    return geolng; 
} 

public String getGeolat() { 
    return geolat; 
} 

public String getType() { 
    return type; 
} 

public String getMessage() { 
    return message; 
} 

public int getId() { 
    return id; 
} 

public void setId(int id) { 
    this.id = id; 
} 

public void setMessage(String message) { 
    this.message = message; 
} 

public void setType(String type) { 
    this.type = type; 
} 

public void setGeolat(String geolat) { 
    this.geolat = geolat; 
} 

public void setGeolng(String geolng) { 
    this.geolng = geolng; 
} 
} 

这是MessageDatabaseHandler.java：

public class MessageDatabaseHandler extends SQLiteOpenHelper { 

// Database Version 
private static final int DATABASE_VERSION = 2; 

// Database Name 
private static final String DATABASE_NAME = "messageManager"; 

// Contacts table name 
private static final String TABLE_MESSAGE = "messages"; 

//table fields 
private static final String id = "id"; 
private static final String message = "message"; 
private static final String type = "type"; 
private static final String geolat = "geolat"; 
private static final String geolng = "geolng"; 


public MessageDatabaseHandler(Context context) { 
    super(context, DATABASE_NAME, null, DATABASE_VERSION); 
} 

@Override 
public void onCreate(SQLiteDatabase db) { 

    String CREATE_MESSAGE_TABLE = "CREATE TABLE " + TABLE_MESSAGE + "(" 

      + id + " INTEGER PRIMARY KEY," 
      + message + " TEXT," 
      + type + " TEXT" 
      + geolat +" TEXT" 
      + geolng + " TEXT" 

      +")"; 
    db.execSQL(CREATE_MESSAGE_TABLE); 

} 

@Override 
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
    // Drop older table if existed 
    db.execSQL("DROP TABLE IF EXISTS " + TABLE_MESSAGE); 
    // Create tables again 
    onCreate(db); 

} 

//ADD NEW 
public void addNewMessage(Messages messages){ 

    SQLiteDatabase db = this.getWritableDatabase(); 
    ContentValues values = new ContentValues(); 

    values.put(message, messages.getMessage()); 
    values.put(type, messages.getType()); 
    values.put(geolat, messages.getGeolat()); 
    values.put(geolng, messages.getGeolng()); 

    // Inserting Row 
    db.insert(TABLE_MESSAGE,null,values); 
    db.close(); // Closing database connection 
} 

// Getting single contact 
Messages getMessage(int inputId) { 
    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor cursor = db.query(TABLE_MESSAGE, new String[] 
        { 
          id, 
          message, 
          type, 
          geolat, 
          geolng 
        }, 
        id + "=?", 

      new String[] { String.valueOf(inputId) }, null, null, null, null); 
    if (cursor != null) 
     cursor.moveToFirst(); 

    Messages messages = new Messages(
          Integer.parseInt(cursor.getString(0)), 
          cursor.getString(1), 
          cursor.getString(2), 
          cursor.getString(3), 
          cursor.getString(4) 
    ); 
    // return contact 
    return messages; 
} 

// Getting contacts Count 
public int getMessageCount() { 
    String countQuery = "SELECT * FROM " + TABLE_MESSAGE; 
    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor cursor = db.rawQuery(countQuery, null); 
    cursor.close(); 
    // return count 
    return cursor.getCount(); 
} 

// Getting All Messages 
public List<Messages> getAllMessages() { 
    List<Messages> messageList = new ArrayList<Messages>(); 
    // Select All Query 
    String selectQuery = "SELECT * FROM " + TABLE_MESSAGE; 

    SQLiteDatabase db = this.getWritableDatabase(); 
    Cursor cursor = db.rawQuery(selectQuery, null); 

    // looping through all rows and adding to list 
    if (cursor.moveToFirst()) { 
     do { 
      Messages message = new Messages(); 
      message.setId(Integer.parseInt(cursor.getString(0))); 
      message.setMessage(cursor.getString(1)); 
      message.setType(cursor.getString(2)); 
      message.setGeolat(cursor.getString(3)); 
      message.setGeolng(cursor.getString(4)); 
      // Adding message to list 
      messageList.add(message); 
     } while (cursor.moveToNext()); 
    } 

    // return message list 
    return messageList; 
} 

// Deleting single contact 
public void deleteAllMessages(Messages message) { 
    SQLiteDatabase db = this.getWritableDatabase(); 
    db.delete(TABLE_MESSAGE,null,null); 
    db.close(); 
} 
} 

这是怎么插入从我的活动行：

MessageDatabaseHandler db = new MessageDatabaseHandler(MainActivity.this); 
       // Inserting Message 
       Log.d("Insert: ", "Inserting .."); 
       db.addNewMessage(new Messages(
              "", 
              "0", 
              "99999", 
              "88888" 
         ) 
       ); 

最后这个错误：

请帮我解决这个问题，在此先感谢。

Answer 1

像这样改变Create查询。

String CREATE_MESSAGE_TABLE = "CREATE TABLE " + TABLE_MESSAGE + "(" 
      + id + " INTEGER PRIMARY KEY, " 
      + message + " TEXT, " 
      + type + " TEXT, " 
      + geolat +" TEXT, " 
      + geolng + " TEXT)"; 

Answer 2

我想你错过了onCreate（）中的一些逗号。尝试改变它如下。

@Override 
public void onCreate(SQLiteDatabase db) { 

    String CREATE_MESSAGE_TABLE = "CREATE TABLE " + TABLE_MESSAGE + "(" 

      + id + " INTEGER PRIMARY KEY," 
      + message + " TEXT," 
      + type + " TEXT," 
      + geolat +" TEXT," 
      + geolng + " TEXT" 

      +")"; 
    db.execSQL(CREATE_MESSAGE_TABLE); 

}