objective c - how to insert data in database and get data from database -

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i new on iphone development. making app, using sqlite3 database. create tables sqlite3 manager 3.9.5 , write code copy database in appdelegete.m file , database copy successfully.

i insert data in database , insertion takes place primary key when access data database, sends null , if open database , open tables not show data entered in table. here code insert data , data database.

- (ibaction)addrecord:(id)sender {      nsarray *paths = nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes);     nsstring *documentsdirectory = [paths objectatindex:0];     nsstring *path = [documentsdirectory stringbyappendingpathcomponent:@"ebirthdaydatabase.sqlite"];         if (sqlite3_open([path utf8string], &database) == sqlite_ok) {               const char *sqlstatement = "insert name(name) values(?)";             sqlite3_stmt *compiledstatement;                             if (sqlite3_prepare_v2(database, sqlstatement, -1, &compiledstatement, null) == sqlite_ok){                 nslog(@"name.text :%@",name.text);                  sqlite3_bind_text(compiledstatement, 1, [name.text utf8string], -1, sqlite_transient); //                showcontactsviewcontroller *contact = [[showcontactsviewcontroller alloc]init]; //                contact.username = name.text; //                [contact addarray:contact];              }              if(sqlite3_step(compiledstatement) != sqlite_done ) {                 nslog( @"error: %s", sqlite3_errmsg(database) );             } else {                 nslog( @"insert row id = %lld", sqlite3_last_insert_rowid(database));             }             sqlite3_finalize(compiledstatement);          sqlite3_close(database);         }   sqlite3 *database;     nsarray *paths = nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes);     nsstring *documentsdirectory = [paths objectatindex:0];     nsstring *path = [documentsdirectory stringbyappendingpathcomponent:@"ebirthdaydatabase.sqlite"];      nslog(@"%@",path);     if (sqlite3_open([path utf8string], &database) == sqlite_ok) {          const char *sql = "select name name";         sqlite3_stmt *selectstmt;         if(sqlite3_prepare_v2(database, sql, -1, &selectstmt, null) == sqlite_ok) {              while(sqlite3_step(selectstmt) == sqlite_row) {                  //                nsinteger primarykey = sqlite3_column_int(selectstmt, 0);                 //                coffee *coffeeobj = [[coffee alloc] initwithprimarykey:primarykey];                 showcontactsviewcontroller *contact=[[showcontactsviewcontroller alloc]init];                  char *localitychars =( char *)sqlite3_column_name(selectstmt, 0);                  if (localitychars ==null)                     contact.username = nil;                 else                     contact.username = [nsstring stringwithutf8string: localitychars];                  //contact.username = [nsstring stringwithutf8string:(char *)sqlite3_column_text(selectstmt, 1)];                 nslog(@"%@",username);                  [showcontact addobject:contact];             }         }     }

to use managers if can't fix yours issue. example https://github.com/misato/sqlitemanager4ios


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