sqlite版本的vlookup(sqlite version of vlookup)

 让我们假设你在UITableViewController中构建一个带有对象的数组（例如：MyObject.m / h）。 您应该使用didSelectRowAtIndexPath检测用户选择了哪个单元格，然后在准备segue时使用该整数从数组中检索MyObject。 例如： 
 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

        cellPressed =(int)indexPath.row; //cellPressed is an integer variable(global variable in my VC

        [self performSegueWithIdentifier:@"toMyVC" sender:self];

}
 
 现在准备ForSegue： 
 
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

if([[segue identifier] isEqualToString:@"toMyVc"]){

    MyVC *mVC = [segue destinationViewController];
    mVC.myObject = [myArrayWithMyObjects objectAtIndex:cellPressed];

 }
}
 
 在您的编辑视图中： 
 
IDEditVC *secondViewController =
[storyBoard instantiateViewControllerWithIdentifier:@"editvc"];
secondViewController.myObj = myObjectRetrievedFromArray;
 
 注意：您应该在.h文件中声明一个变量MyObject，以便从其他类可见。 
 
 在类中声明“全局”变量： 
 
@interface ViewController : UIViewController{

  int cellPressed; //This is accessible by any method in YourViewController.m
}

Lets assume that in UITableViewController you are building the TableView an array with objects(eg: MyObject.m/h). You should detect which cell the user has select using the didSelectRowAtIndexPath and then retrieve MyObject from your array using that integer at prepare for segue. Eg:
 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

        cellPressed =(int)indexPath.row; //cellPressed is an integer variable(global variable in my VC

        [self performSegueWithIdentifier:@"toMyVC" sender:self];

}
 
Now on prepareForSegue:
 
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

if([[segue identifier] isEqualToString:@"toMyVc"]){

    MyVC *mVC = [segue destinationViewController];
    mVC.myObject = [myArrayWithMyObjects objectAtIndex:cellPressed];

 }
}
 
In your Edit View:
 
IDEditVC *secondViewController =
[storyBoard instantiateViewControllerWithIdentifier:@"editvc"];
secondViewController.myObj = myObjectRetrievedFromArray;
 
Note: You should declare a variable MyObject in .h file in order to be visible from other classes.
 
Declaring a "global" variable in a class:
 
@interface ViewController : UIViewController{

  int cellPressed; //This is accessible by any method in YourViewController.m
}