如何在iPhone上查看IDFV？含IDFA停用后的测试场景需求

Hey there! Since you're planning to use IDFV for testing now that IDFA access is being restricted, let's walk through the two most reliable ways to retrieve and view it on your iPhone:

Method 1: Build a Tiny Demo App (Best for Developers) #

This is the most direct way to get the IDFV, especially if you're already working in Xcode for testing. Here's how:

1. Open Xcode and create a new Single View App project (Swift or Objective-C, whatever you prefer).
2. Add the code below to your ViewController to fetch and display the IDFV:

Swift Code #

import UIKit

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Fetch IDFV
        let idfv = UIDevice.current.identifierForVendor?.uuidString
        
        // Print to Xcode console
        print("Your IDFV: \(idfv ?? "Could not retrieve IDFV")")
        
        // Display directly on the app screen for easy viewing
        let displayLabel = UILabel(frame: CGRect(x: 20, y: 100, width: view.frame.width - 40, height: 60))
        displayLabel.text = "IDFV: \(idfv ?? "Not found")"
        displayLabel.numberOfLines = 0
        displayLabel.textAlignment = .center
        view.addSubview(displayLabel)
    }
}

Objective-C Code #

#import "ViewController.h"

@interface ViewController ()
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // Fetch IDFV
    NSString *idfv = [[UIDevice currentDevice] identifierForVendor].UUIDString;
    
    // Print to Xcode console
    NSLog(@"Your IDFV: %@", idfv ?: @"Could not retrieve IDFV");
    
    // Display directly on the app screen
    UILabel *displayLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 100, self.view.frame.size.width - 40, 60)];
    displayLabel.text = [NSString stringWithFormat:@"IDFV: %@", idfv ?: @"Not found"];
    displayLabel.numberOfLines = 0;
    displayLabel.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:displayLabel];
}

@end

3. Connect your iPhone to your computer, select it as the run destination in Xcode, and hit the run button. You'll see the IDFV both in the Xcode console and directly on your iPhone's screen.

Method 2: Use Xcode's Device Console (No Code Needed, If Your App Logs IDFV) #

If you already have an app that logs the IDFV (maybe you're testing an existing app), you can pull it from the device console:

1. Connect your iPhone to your computer and open Xcode.
2. Go to Window > Devices and Simulators (or press Shift + Command + 2).
3. Select your iPhone from the left sidebar, then click the Open Console button at the bottom.
4. In the console search bar, type identifierForVendor or IDFV to filter logs. Open your app, and you'll see the IDFV printed in the logs if your app is set to output it.

Key Notes for Testing with IDFV #

• No user authorization required: Unlike IDFA, you don't need to ask users for permission to access IDFV, which makes it great for testing.
• IDFV consistency: All apps from the same developer account on the same device will share the same IDFV. If a user deletes all your apps and reinstalls one, the IDFV will reset.
• Not a permanent identifier: Don't rely on IDFV as a long-term unique device ID, but it's perfect for short-term testing scenarios.

内容的提问来源于stack exchange，提问作者alexander_paper