android - Why is Logcat showing "E/SQLiteLog﹕ (1) no such table: reg_info"? -

i changed database version, added appropriate amount of spaces sql function create table , updated parameters function inserts input database, logcat still displays:

e/sqlitelog: (1) no such table: reg_info e/sqlitedatabase: error inserting user_password=e user_email=e user_name=e while compiling: insert reg_info(user_password,user_email,user_name) 

i condensed information displayed errors focus on these specific errors. problem occurs on emulator , android devices. thank you.

this contract class declared columns table:

package com.example.xxx.datadigger; import android.provider.basecolumns;  public final class tabledata {     public tabledata()     {      }     public static abstract class tableinfo implements basecolumns     {         public static final string database_name="user_info";         public static final string table_name="reg_info";         public static final string key_id = "id";         public static final string user_name = "user_name";         public static final string user_password = "user_password";         public static final string user_con = "user_con";         public static final string user_email = "user_email";     } } 

here attempt create table , insert data insert:

package com.example.xxx.datadigger;  import android.app.actionbar; import android.content.contentvalues; import android.content.context; import android.database.sqlite.sqlitedatabase; import android.database.sqlite.sqliteopenhelper; import android.util.log; import android.widget.tabwidget;   public class databaseoperations extends sqliteopenhelper{      public static final int database_version = 2;      private static final string text_type = " text";      private static final string comma_sep = ", ";      private static final string create_query = "create table "                 + tabledata.tableinfo.table_name + " ("                 + tabledata.tableinfo.key_id + " integer primary key autoincrement, "                 + tabledata.tableinfo.user_email + text_type + comma_sep                 + tabledata.tableinfo.user_name + text_type + comma_sep                 + tabledata.tableinfo.user_password + text_type + comma_sep                 + "); ";      public databaseoperations(context context) {         super(context, tabledata.tableinfo.database_name, null, database_version);         log.d("database operations", "database created");         }      @override     public void oncreate(sqlitedatabase sdb) {          sdb.execsql(create_query);         log.d("database operations","table created");     }      @override     public void onupgrade(sqlitedatabase db, int oldversion, int newversion) {          }     public void putinformation(databaseoperations dop, string name,string password,string email)     {         sqlitedatabase sq = dop.getwritabledatabase();         contentvalues cv = new contentvalues();         cv.put(tabledata.tableinfo.user_email, email);         cv.put(tabledata.tableinfo.user_name,name);         cv.put(tabledata.tableinfo.user_password, password);         //cv.put(tabledata.tableinfo.user_con,con_password);         sq.insert(tabledata.tableinfo.table_name, null, cv);         log.d("database operations","one raw inserted");     } } 

your onupgrade()(after version number increased) method empty if table not created during oncreate()(first time db gets created) never created , same error thrown. saying created space increased version , trying never workout.

try uninstalling app , re-inistall in existing code.