android - The SQL database is not being created -


i trying create tables dynamically , access them when needed ... when run code neither giving errors or exceptons nor creating database ... debugging saw oncreate method called time when encounters getwritabledatabase().

here sqlopenhelper class - 

package com.example.launch;  import java.util.arraylist;  import android.content.contentvalues; import android.content.context; import android.database.cursor; import android.database.sqlite.sqlitedatabase; import android.database.sqlite.sqliteopenhelper; import android.util.log;  public class db extends sqliteopenhelper {      sqlitedatabase db12;      public db(context context) {         super(context, null, null, 1);      }      public void oncreate(sqlitedatabase b) {         b.execsql("create table if not exists sample1 (col1 text_type,col2 text_type,message text_type )");      }      public void create(string name) {         db12 = getwritabledatabase();         db12.execsql("create table if not exists " + name                 + "(col1 text_type,col2 text_type,message text_type )");         db12.close();         log.e("create", "successful");     }      public void onupgrade(sqlitedatabase db, int oldversion, int newversion) {     }      public void insert(string name, string message, string col1, string col2) {         create(name);         db12 = getwritabledatabase();         contentvalues v = new contentvalues();         v.put("col1", col1);         v.put("col2", col2);         v.put("message", message);         db12.insert(name, null, v);         log.e("insert", "may successful");         db12.close();     }      public arraylist<string> getarray() {          arraylist<string> tablelist = new arraylist<string>();         string sql_get_all_tables = "select name "                 + "sqlite_master type='table' order name";         db12 = getwritabledatabase();         log.e("here", "came");         cursor cursor = db12.rawquery(sql_get_all_tables, null);         try {             if (cursor.movetofirst())                 ;             {                 while (!cursor.isafterlast()) {                     tablelist.add(cursor.getstring(0));                     cursor.movetonext();                 }             }         } {             cursor.close();             db12.close();         }         return tablelist;     }      public string gettable(string name) {          cursor cursor = null;         string ss = "";         db12 = getwritabledatabase();          try {             cursor = db12.rawquery("select * " + name, null);             if (cursor.movetofirst()) {                 int col2in = cursor.getcolumnindex("col2");                 int msg = cursor.getcolumnindex("message");                 while (!cursor.isafterlast()) {                     if (cursor.getstring(col2in) == "1") {                          ss = ss + "/n " + name + " : " + cursor.getstring(msg);                      }                      else {                          ss = ss + "/n : " + cursor.getstring(msg);                      }                  }              }         } {             cursor.close();             db12.close();         }         return ss;     }  }

any appreciated ....


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