Android 表x没有名为y的列
我在向数据库发送数据时遇到问题 错误: E/SQLiteDatabase:插入linka=14时出错jedu=false cas=2018-05-03 17:33:05 id_veh=1234 android.database.sqlite.SQLiteException:表m_寄存器没有名为linka(代码1)的列,编译时: 插入m_寄存器(linka、jedu、cas、id_veh)值(?,,?) 这是我的类,其中调用了addData。错误由addData方法触发Android 表x没有名为y的列,android,database,sqlite,Android,Database,Sqlite,我在向数据库发送数据时遇到问题 错误: E/SQLiteDatabase:插入linka=14时出错jedu=false cas=2018-05-03 17:33:05 id_veh=1234 android.database.sqlite.SQLiteException:表m_寄存器没有名为linka(代码1)的列,编译时: 插入m_寄存器(linka、jedu、cas、id_veh)值(?,,?) 这是我的类,其中调用了addData。错误由addData方法触发 package
package com.example.pc.mhdapp;
import android.content.ContentValues;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class DatabaseHelper extends SQLiteOpenHelper{
private static final String TAG = "DatabaseHelper";
private static final String TABLE_NAME = "m_register";
private static final String COL1 = "ID";
private static final String COL2 = "id_veh";
private static final String COL3 = "linka";
private static final String COL4 = "jedu";
private static final String COL5 = "cas";
public DatabaseHelper(Context context){
super(context, TABLE_NAME, null, 1);
}
@Override
public void onCreate(SQLiteDatabase db) {
String createTable = "CREATE TABLE " + TABLE_NAME + " (ID INTEGER(11) PRIMARY KEY AUTOINCREMENT," +
COL2 + " VARCHAR(11)," +
COL3 + " VARCHAR(50)," +
COL4 + " VARCHAR(3)," +
COL5 + " DATETIME)";
db.execSQL(createTable);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME);
onCreate(db);
}
public boolean addData(String id_vehl, String linkas, String jedus, String cass){
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(COL2, id_vehl);
contentValues.put(COL3, linkas);
contentValues.put(COL4, jedus);
contentValues.put(COL5, cass);
Log.d(TAG, "addDATA: adding " + id_vehl+ ", "+linkas+ ", "+jedus+ ", "+cass+ " to " + TABLE_NAME);
long result = db.insert(TABLE_NAME,null, contentValues);
if(result == -1){
return false;
}else{
return true;
}
}
}您似乎通过添加其他列更改了数据库架构,尝试卸载并重新安装该应用程序,它将正常工作。
提示:下次修改数据库架构时,请在onUpgrade中升级版本,此处
id\u veh
和jedu
是整数类型,您正在放入字符串。我更改了它,但仍然是相同的错误OK。如果您已更改DB架构或更新表架构。尝试卸载应用程序并重新安装。