SQLite數據庫錯誤：找不到表格的Android

Question

我在嘗試創建數據庫時，此錯誤： 錯誤信息 輸入代碼在這裏 2月2日至23日：08：46.780：E /數據庫（32721）：錯誤 插入電子郵件= af contact = 38 dob = 1/8/68 name = ex 02-23 02：08：46.780：E/Database（32721）： android.database.sqlite.SQLiteException：no such table： profiles：，while編譯：INSERT INTO配置文件 （email，contact，dob，name）VALUES（？，？，？，？）; 02：02：08：46.780：E/Database（32721）： atandroid.database.sqlite.SQLiteCompiledSql.native_compile（Native Method） 02-23 02：08：46.780：E/Database（32721）：at

package a.vaccination; 

import android.content.ContentValues; 
import android.content.Context; 
import android.database.SQLException; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 
import android.util.Log; 

public class datahandler { 

public static final String KEY_ROWID = "id"; 
public static final String KEY_name = "name"; 
public static final String KEY_dob = "dob"; 
public static final String KEY_contact = "contact"; 
public static final String KEY_email = "email"; 
private static final String TAG = "DBAdapter"; 

private static final String DATABASE_NAME = "profile"; 
private static final String DATABASE_TABLE = "profiles"; 
private static final int DATABASE_VERSION = 2; 

private static final String DATABASE_CREATE 
= "create table (id integer primary  keyautoincrement, " 
+ "name VARCHAR not null, dob date, contact VARCHAR, email VARCHAR);"; 
private final Context context; 

private DatabaseHelper DBHelper; 
private SQLiteDatabase db; 

public datahandler(Context ctx) { 
    this.context = ctx; 
    DBHelper = new DatabaseHelper(context); 
} 

protected static class DatabaseHelper extends SQLiteOpenHelper { 
    DatabaseHelper(Context context) { 
     super(context, DATABASE_NAME, null, DATABASE_VERSION); 
    } 

    @Override 
    public void onCreate(SQLiteDatabase db) { 
     // TODO Auto-generated method stub 
     try { 
      db.execSQL(DATABASE_CREATE); 
      //db = DBHelper.getWritableDatabase(); 
     } catch (SQLException e) { 
      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
     // TODO Auto-generated method stub 
     Log.w(TAG, "Upgrading database from version " + oldVersion + " to " 
    + newVersion + ", which will destroy all old data"); 
     db.execSQL("DROP TABLE IF EXISTS contacts"); 
     onCreate(db); 
    } 
    } 

// ---opens the database--- 
public datahandler open() throws SQLException { 
    db = DBHelper.getWritableDatabase(); 
    return this; 
} 

// ---closes the database--- 
public void close() { 
    DBHelper.close(); 
} 

// ---insert a record into the database--- 
public long insertRecord(String name, String dob, String contact, 
     String email) { 
    ContentValues initialValues = new ContentValues(); 
    initialValues.put(KEY_name, name); 
    initialValues.put(KEY_dob, dob); 
    initialValues.put(KEY_contact, contact); 
    initialValues.put(KEY_email, email); 
    return db.insert(DATABASE_TABLE, null, initialValues); 
} 

// ---updates a record--- 
public boolean updateRecord(long rowId, String name, String dob, 
     String contact, String email) { 
    ContentValues args = new ContentValues(); 
    args.put(KEY_name, name); 
    args.put(KEY_dob, dob); 
    args.put(KEY_contact, contact); 
    args.put(KEY_email, email); 
    return db.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0; 
} 
} 

Answer 1

您的查詢的一個原因是嘗試incorrent：

• 你缺少的tablename
• 你缺少鍵和自動增量

所以正確的它之間的空格之後：

String DATABASE_CREATE = "create table TableName(id integer primary key autoincrement, " 
+ "name VARCHAR not null, dob date, contact VARCHAR, email VARCHAR)"; 

現在，它會工作。

Answer 2

請點擊這裏表名

private static final String DATABASE_CREATE 
= "create table TABLENAME (id integer primary key autoincrement, " 
+ "name VARCHAR not null, dob date, contact VARCHAR, email VARCHAR);"; 

這看起來像背後

no such table: profiles