Objective c sqlite3_exec==SQLITE_正常故障

我刚开始使用objective C进行开发，现在正努力使用IF语句（sqlite3_exec==SQLITE_OK）。我一直在使用教程，似乎找不到我的答案

有人能告诉我哪里出了问题吗

-(IBAction)addItemButton:(id)sender {
    char *error;

    if (sqlite3_open([dbPathString UTF8String], &itemDB) == SQLITE_OK) {
        NSString *insertStat = [NSString stringWithFormat:@"INSERT INTO ITEMS(ITEM) values ('%s')", [self.itemField.text UTF8String]];

        const char *insert_stat = [insertStat UTF8String];


        if (sqlite3_exec(itemDB, insert_stat, NULL, NULL, &error)== SQLITE_OK) {
            NSLog(@"Item Added");

            Item *item = [[Item alloc]init];

            [item setItem:self.itemField.text];

            [arrayOfItem addObject:item];
        }else{
            NSLog(@"Item not added");
        }

        sqlite3_close(itemDB);
    }
}

---

我编写了一个简单的SQLite帮助程序，用于执行一般的数据库任务，只需几行代码，例如从DB中获取记录、插入、更新和删除记录。

在项目中下载并拖动ZeeSQLiteHelper类，并在ZeeSQLiteHelper类中设置DB名称

获取记录示例：

[ZeeSQLiteHelper initializeSQLiteDB];
NSString *query = @"SELECT * FROM recipes";
NSMutableArray *results = [ZeeSQLiteHelper readQueryFromDB:query];
[ZeeSQLiteHelper closeDatabase];

用于插入

[ZeeSQLiteHelper initializeSQLiteDB];
NSString *queryString = [NSString stringWithFormat:@"insert into %@ (%@,%@) VALUES ('%@','%@')",downloadsTblName, tblAttrFileName, tblAttrFileURL, downloadInfo.fileName, downloadInfo.fileURL];
[ZeeSQLiteHelper executeQuery:queryString];
[ZeeSQLiteHelper closeDatabase];

[ZeeSQLiteHelper initializeSQLiteDB];
NSString *queryString = [NSString stringWithFormat:@"UPDATE %@ SET %@='%@' WHERE %@='%@'",downloadsTblName, tblAttrFileName, newFilePath.lastPathComponent, tblAttrFileName,oldFilePath.lastPathComponent];
[ZeeSQLiteHelper executeQuery:queryString];
[ZeeSQLiteHelper closeDatabase];

[ZeeSQLiteHelper initializeSQLiteDB];
NSString *queryString = [NSString stringWithFormat:@"DELETE FROM %@ WHERE %@='%@'",downloadsTblName, tblAttrFileName,downloadedFileObj.videoTitle];
[ZeeSQLiteHelper executeQuery:queryString];
[ZeeSQLiteHelper closeDatabase];

用于更新

[ZeeSQLiteHelper initializeSQLiteDB];
NSString *queryString = [NSString stringWithFormat:@"insert into %@ (%@,%@) VALUES ('%@','%@')",downloadsTblName, tblAttrFileName, tblAttrFileURL, downloadInfo.fileName, downloadInfo.fileURL];
[ZeeSQLiteHelper executeQuery:queryString];
[ZeeSQLiteHelper closeDatabase];

[ZeeSQLiteHelper initializeSQLiteDB];
NSString *queryString = [NSString stringWithFormat:@"UPDATE %@ SET %@='%@' WHERE %@='%@'",downloadsTblName, tblAttrFileName, newFilePath.lastPathComponent, tblAttrFileName,oldFilePath.lastPathComponent];
[ZeeSQLiteHelper executeQuery:queryString];
[ZeeSQLiteHelper closeDatabase];

[ZeeSQLiteHelper initializeSQLiteDB];
NSString *queryString = [NSString stringWithFormat:@"DELETE FROM %@ WHERE %@='%@'",downloadsTblName, tblAttrFileName,downloadedFileObj.videoTitle];
[ZeeSQLiteHelper executeQuery:queryString];
[ZeeSQLiteHelper closeDatabase];

用于删除

[ZeeSQLiteHelper initializeSQLiteDB];
NSString *queryString = [NSString stringWithFormat:@"insert into %@ (%@,%@) VALUES ('%@','%@')",downloadsTblName, tblAttrFileName, tblAttrFileURL, downloadInfo.fileName, downloadInfo.fileURL];
[ZeeSQLiteHelper executeQuery:queryString];
[ZeeSQLiteHelper closeDatabase];

[ZeeSQLiteHelper initializeSQLiteDB];
NSString *queryString = [NSString stringWithFormat:@"UPDATE %@ SET %@='%@' WHERE %@='%@'",downloadsTblName, tblAttrFileName, newFilePath.lastPathComponent, tblAttrFileName,oldFilePath.lastPathComponent];
[ZeeSQLiteHelper executeQuery:queryString];
[ZeeSQLiteHelper closeDatabase];

[ZeeSQLiteHelper initializeSQLiteDB];
NSString *queryString = [NSString stringWithFormat:@"DELETE FROM %@ WHERE %@='%@'",downloadsTblName, tblAttrFileName,downloadedFileObj.videoTitle];
[ZeeSQLiteHelper executeQuery:queryString];
[ZeeSQLiteHelper closeDatabase];

---

控制台上将记录相应的成功或失败消息。

是否尝试在SQLlite中插入行？请参阅。这是iOS/MAC OS X上sqlite的一个很好的框架。你可以在它的代码中找到答案，还可以记录返回的内容。hi user2071152是的，但它没有进入代码的这一部分。