Query doesn't insert values in sqlite - ios

Question

I have a problem that is haunting me a few days. All I want to do is add a command inside the method 'ViewDidLoad' which will make entering data into sqlite, which would make it simple do not need other fields and buttons, so, on the simulation runs, the new record will be inserted automatically in sqlite, so I try this:
In SQLite Manager Database (Plugin in firefox), I create a New Database who name is 'registros', and the program save it 'registros.sqlite'
I create this table:
CREATE TABLE "main"."campos" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL UNIQUE , "campo1" VARCHAR, "campo2" VARCHAR, "campo3" VARCHAR)
In my project file, all I did was, create a file who name is 'MYFristViewController' with xib file, In the 'build Phases' I add the 'libsqlite3.dylib'. In the MyFristViewController.m I add this code:
#import "MyFristViewController.h"
#import <sqlite3.h>
#implementation MyFristViewController
- (void)viewDidLoad{
[super viewDidLoad];
sqlite3 *db;
NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:#"registros.sqlite"];
sqlite3_open([dbPath UTF8String], &db);
char *sql = "INSERT INTO campos (campo1,campo2,campo3) VALUES (?,?,?)";
sqlite3_stmt *stmt;
int resultado2 = sqlite3_prepare_v2(db, sql, -1, &stmt, nil);
sqlite3_bind_text(stmt, 1, [#"Campo_01" UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(stmt, 2, [#"Campo_02" UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(stmt, 3, [#"Campo_03" UTF8String], -1, SQLITE_TRANSIENT);
resultado2 = sqlite3_step(stmt);
sqlite3_finalize(stmt);
}
#end
As a beginner I'm not sure what else to do, I even tried modifying the fifth parameter of the command 'sqlite3_bind_text' to SQLITE_STATIC or SQLITE_TRANSIENT, but it seems that the values ​​were not added to the database, could someone help me?

Answer 1

to create a new register in database, in .h file (Inherited NSObject), do you need import sqlite3.h, get the path of database:
#interface RegistroCrud : NSObject{
sqlite3 *bd;
}
-(NSString *) getPathBD;
-(void)newRegister:(NSString *)campo1 campo2:(NSString *)campo2 campo3:(NSString *)campo3;
getPathDB method is to get the database if does exits, or create it if does not exits
in .m file:
-(NSString *)getPathBD
{
NSString *dirDocs;
NSArray *rutas;
NSString *rutaBD;
rutas = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
dirDocs = [rutas objectAtIndex:0];
NSFileManager *fileMgr = [NSFileManager defaultManager];
rutaBD = [[NSString alloc] initWithString:[dirDocs
stringByAppendingPathComponent:#"registros.sqlite"]];
if([fileMgr fileExistsAtPath:rutaBD] == NO){
[fileMgr copyItemAtPath:[[[NSBundle mainBundle]resourcePath]stringByAppendingPathComponent:#"registros.sqlite"] toPath:rutaBD error:NULL
];
}
return rutaBD;
}
-(void)newRegister:(NSString *)campo1 campo2:(NSString *)campo2 campo3:(NSString *)campo3
{
NSString *pathDB = [self getPathBD];
if(!(sqlite3_open([pathDB UTF8String], &bd) == SQLITE_OK)){
NSLog(#"No se puede conectar con la BD");
return;
} else {
NSString *sqlInsert = [NSString stringWithFormat:#"INSERT OR IGNORE INTO campos (campo1,campo2,campo3) VALUES (%#,%#,'%#')",campo1,campo2,campo3];
const char *sql = [sqlInsert UTF8String];
sqlite3_stmt *sqlStatement;
if(sqlite3_prepare_v2(bd, sql, -1, &sqlStatement, NULL) != SQLITE_OK){
NSLog(#"Problema al preparar el statement");
return;
} else {
if(sqlite3_step(sqlStatement) == SQLITE_DONE){
sqlite3_finalize(sqlStatement);
sqlite3_close(bd);
}
}
}
}
Do you need have the registros.sqlite in the project
there is a tutorial in spanish: http://www.imaginaformacion.com/tutoriales/crear-una-aplicacion-con-sql-lite-en-ios-5-parte-i/ to make crud in database in ios with sqlite, ;)

Answer 2

I tried many things but did not get any results, here I leave with you the files of my project:
www.fazerbem.com.br/TesteUltimoSql.zip