Android SQLite“表没有没有列”，但确实如此。 （代码1）

时间：2014-06-16 19:16:06

标签： android sqlite

我已经关注Android Hive网站上的教程并根据我的需要调整它，因为我在Android应用程序中使用SQLite非常新。但是我似乎每次都遇到同样的错误。我在下面发布了我的logcat。你可以看到它说我的桌子＆＃39;时代＆＃39;没有列＆＃39;乘以＆＃39;但无论什么时候我觉得我已经解决了问题，通过重命名等等，它只会在我表格中的不同列上出现同样的问题。

我的类DatabaseHelper如下： 

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class DatabaseHandler extends SQLiteOpenHelper {

// All Static variables
// Database Version
private static final int DATABASE_VERSION = 1;

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

// Contacts table name
private static final String TABLE_TIMES = "times";

// Contacts Table Columns names
private static final String KEY_ID = "_id";
private static final String KEY_LENGTH = "length";
private static final String KEY_DIFFICULTY = "difficulty";
private static final String KEY_ADD = "addition";
private static final String KEY_SUBTRACT = "subtraction";
private static final String KEY_DIVISION = "division";
private static final String KEY_MULTIPLY = "multiply";
private static final String KEY_DECIMAL = "decimal";
private static final String KEY_NEGATIVE = "negative";
private static final String KEY_TIME = "time";
private static final String KEY_DATE = "date";

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

}

// Creating Tables
@Override
public void onCreate(SQLiteDatabase db) {
    String CREATE_TIMES_TABLE = "CREATE TABLE " + TABLE_TIMES + "("
            + KEY_ID + " INTEGER PRIMARY KEY," + KEY_LENGTH + " INTEGER, "
            + KEY_DIFFICULTY + " INTEGER, " + KEY_ADD + " BOOLEAN, " + KEY_SUBTRACT
            + " BOOLEAN, " + KEY_DIVISION + " BOOLEAN, " + KEY_MULTIPLY + " BOOLEAN, "
            + KEY_DECIMAL + " BOOLEAN, " + KEY_NEGATIVE + " BOOLEAN, " + KEY_TIME
            + " LONG, " + KEY_DATE + " DATETIME" + ")";
             db.execSQL(CREATE_TIMES_TABLE);
}

   // Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    // Drop older table if existed
    db.execSQL("DROP TABLE IF EXISTS " + TABLE_TIMES);

    // Create tables again
    onCreate(db);
}

/**
 * All CRUD(Create, Read, Update, Delete) Operations
 */


void addTimeData (TimeData timeData){

    SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
    Date date = new Date();



      SQLiteDatabase db = this.getWritableDatabase();
      ContentValues values = new ContentValues();
      values.put(KEY_LENGTH,timeData.getLength()); //Numbers of questions
      values.put(KEY_DIFFICULTY,timeData.getDifficulty()); //Difficulty
      values.put(KEY_ADD, timeData.getAdd()); //Add Questions?
      values.put(KEY_SUBTRACT, timeData.getSubtract()); //Subtract Questions?
      values.put(KEY_DIVISION,timeData.getDivision()); //Div Questions?
      values.put(KEY_MULTIPLY,timeData.getMultiply()); //Mult Quetsions?
      values.put(KEY_DECIMAL, timeData.getDecimals()); //Decimals?
      values.put(KEY_NEGATIVE, timeData.getNegative()); //Negatives?
      values.put(KEY_TIME, timeData.getTime()); //How long did it take?
      values.put(KEY_DATE, dateFormat.format(date)); //todays date;

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

//Getting all Data

public List<TimeData> getAllTimeData() throws ParseException {
    List<TimeData> TimeList = new ArrayList<TimeData>();
    //select all query
    String selectQuery = "SELECT  * FROM " + TABLE_TIMES;

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

    if (cursor.moveToFirst()) {
        do {
    TimeData tData = new TimeData();
   tData.setID(Integer.parseInt(cursor.getString(0)));
   tData.setLength(Integer.parseInt(cursor.getString(1)));
   tData.setDifficulty(Integer.parseInt(cursor.getString(2)));
   tData.setAdd(Boolean.parseBoolean(cursor.getString(3)));
   tData.setSubtract(Boolean.parseBoolean(cursor.getString(4))); 
   tData.setDivision(Boolean.parseBoolean(cursor.getString(5)));
   tData.setMultiply(Boolean.parseBoolean(cursor.getString(6)));
   tData.setDecimals(Boolean.parseBoolean(cursor.getString(7)));
   tData.setNegative(Boolean.parseBoolean(cursor.getString(8)));
   tData.setTime(Long.parseLong(cursor.getString(9)));

   SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
   Date dt = dateFormat.parse(cursor.getString(10));

   tData.setDate(dt);
    // Adding contact to list
   TimeList.add(tData);
} while (cursor.moveToNext());
}
    return TimeList;
}


}

这是我的Logcat 

06-16 19:57:55.213: E/SQLiteLog(20352): (1) table times has no column named multiply
06-16 19:57:55.245: E/SQLiteDatabase(20352): Error inserting time=20313415529 division=false length=10 multiply=false difficulty=11 negative=false date=2014-06-16 19:57:55 addition=true decimal=false subtraction=false
06-16 19:57:55.245: E/SQLiteDatabase(20352): android.database.sqlite.SQLiteException: table times has no column named multiply (code 1): , while compiling: INSERT INTO times(time,division,length,multiply,difficulty,negative,date,addition,decimal,subtraction) VALUES (?,?,?,?,?,?,?,?,?,?)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at com.sambrooks.mathlete.DatabaseHandler.addTimeData(DatabaseHandler.java:94)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at com.sambrooks.mathlete.AppActivity3.onClick(AppActivity3.java:252)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.view.View.performClick(View.java:4240)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.view.View$PerformClick.run(View.java:17721)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.os.Handler.handleCallback(Handler.java:730)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.os.Handler.dispatchMessage(Handler.java:92)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.os.Looper.loop(Looper.java:137)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at android.app.ActivityThread.main(ActivityThread.java:5103)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at java.lang.reflect.Method.invokeNative(Native Method)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at java.lang.reflect.Method.invoke(Method.java:525)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
06-16 19:57:55.245: E/SQLiteDatabase(20352):    at dalvik.system.NativeStart.main(Native Method)

我非常感谢任何帮助。我已经更改了数据库版本并卸载了应用程序并多次删除了它的数据，并且没有像其他答案所建议的那样修复问题。

1 个答案:

答案 0 :(得分：1)

BOOLEAN之后，你在这里错过了一个逗号。

... + KEY_DIVISION + " BOOLEAN " + KEY_MULTIPLY + " BOOLEAN, " ...

此execSQL()调用是否会引发异常？

我猜这是相关的，因为问题在于KEY_MULTIPLY字段。

相关问题
最新问题