can'；t figure为什么没有执行insert sqlite sql语句，Xcode

我觉得一切都很好，但是prepare_v2没有得到SQLITE_OK

sql指令非常基本，如果我将其复制并粘贴到sqlite管理器上，则插入效果很好

我有什么遗漏吗

//from view controller

- (void)viewDidLoad
{
[super viewDidLoad];

DBConnection* dbCon = [DBConnection alloc];
[dbCon init];
[dbCon InsertDataRollNo:@"888"];

}

}

}

---

}

我明白了，实际上我并没有将sqlite文件复制到iPhone项目，现在运行良好

请确保路径正确，并且您拥有该文件的写入权限。仍然不工作？路径正确，您对该文件的权限是什么意思？mac文件系统写入权限？我向每个人添加了sqlite文件的文件系统写入权限，但仍然失败。允许您发布

-CheckAndCreateDB

？我刚刚发布了，我还发布了init方法来启动db，我的视图控制器调用了它。您说它没有返回

sqlite\u OK

。那么它的回报是什么呢？

-(id)init
{
//[super init];

DBName = @"FoodDB2.sqlite";

NSArray* documentsPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString* documentsDir = [documentsPath objectAtIndex:0];
DBPath = [documentsDir stringByAppendingPathComponent:DBName];

return self;

-(void)InsertDataRollNo:(NSString*)theName
{
[self CheckAndCreateDB];

sqlite3* database;

if(sqlite3_open([DBPath UTF8String], &database)== SQLITE_OK)
{
    NSString* statement;
    sqlite3_stmt* compliedStatement;

    //statement = [[NSString alloc]initWithFormat:@"insert into Category(TheName)values('%d')",@"epa"];
    statement = @"insert into Category(TheName)values('aaa')";
    const char* sqlStatement = [statement UTF8String];

    if(sqlite3_prepare_v2(database, sqlStatement, -1, &compliedStatement, NULL) == SQLITE_OK)
    {
        if(SQLITE_DONE!=sqlite3_step(compliedStatement))
        {
            NSAssert1(0,@"Error by inserting '%s' ", sqlite3_errmsg(database));

        }
        else
        {
            NSAssert1(0,@"cool '%s' ", @"ope");
        }
    }           
    sqlite3_finalize(compliedStatement);
}
sqlite3_close(database);

-(void)CheckAndCreateDB

{



  BOOL success;

NSFileManager* fileManager = [NSFileManager defaultManager];

success = [fileManager fileExistsAtPath:DBPath];

if(success) return;

NSString* databasePathFromApp = [[[NSBundle mainBundle]resourcePath]stringByAppendingPathComponent:DBName];

[fileManager copyItemAtPath:databasePathFromApp toPath:DBPath error:nil];

//[fileManager release];