Dosn't work in Xcode 9 when using Swift. Does work in Xcode 9 using Objective-C.

[MathiasHH]

I got the software, http://johnholdsworth.com/Injection9.app.zip, and installed it.

In Swift the function: func injected() { print("I've been injected: (self)") } dosn't get called, when I type ^=

In Objective-C the function: (void)injected { NSLog(@"I've been injected: %@", self); } does get called when I type ^=

[johnno1962]

I think you need @objc func injected() these days.. Injection uses the Objective-C runtime.

[MathiasHH]

It dosn't seem to work. Do you have an example somewhere where you use Xcode 9 and Swift with injectionforxcode?

[johnno1962]

Is the class final? Is it a struct?

[MathiasHH]

A UIViewController:

import UIKit

class ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
}

@objc func injected() { print("I've been injected: (self)") } }

[johnno1962]

Did Xcode 8 work for you with Swift?

[johnno1962]

I’ve checked my end and I can make a simple master/detail example that injects and logs an injected method. I’ve refreshed the Xcode 9 version of injection if you want to give it a try: http://johnholdsworth.com/injection.html

[Rnorback]

Hi John, I'm having the same problem with Xcode 9. Everything works great on xcode 8. Here's the exact error I'm getting on 9.

CoreSimulator detected Xcode.app relocation or CoreSimulatorService version change. Framework path (/Applications/Xcode.app/Contents/Developer/Library/PrivateFrameworks/CoreSimulator.framework) and version (375.21) does not match existing job path (/Library/Developer/PrivateFrameworks/CoreSimulator.framework/Versions/A/XPCServices/com.apple.CoreSimulator.CoreSimulatorService.xpc) and version (494.13.6). Attempting to remove the stale service in order to add the expected version.
Can’t call method “print” on an undefined value at /Users/robnorback/Desktop/Injection 3.app/Contents/Resources/injectSource.pl line 149.

Every error message I get tells me the simulator path is incorrect. Do I need to do some extra setup for this?

[polac24]

Hi @Rnorback ! I had same issue with "relocation". Maybe it will solve your problem:

• ensure that my xcode-select path is valid
• close Xcode8
• start Xcode9 (I observed that there is no simulators available)
• restart Xcode9 (then simulators are visible)
• no more "detected Xcode.app relocation"

[MathiasHH]

I didn't try with Xcode 8.

The new version, http://johnholdsworth.com/Injection9.app.zip, does work with Xcode 9 and Swift.

Thanks a lot.

[Rnorback]

This command solved it for me

sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

[songxing10000]

Injection: Injection attempting connection to: 127.0.0.1:31452 Injection: Connected to "Injection" plugin, ready to load x86_64 code. Compiling /Users/dfpo/Desktop/ffff/ffff/ViewController.m 0.06 real 0.02 user 0.02 sys Injection: Loading /Users/dfpo/Library/Developer/Xcode/DerivedData/ffff-cwkubzzyiasrnhbioafsmaksvmsv/Logs/iOSInjectionProject/build/Debug-iphonesimulator/InjectionBundle1.bundle objc[19288]: Class ViewController is implemented in both /Users/dfpo/Library/Developer/CoreSimulator/Devices/1132FF26-672A-4CAA-8C46-54FC0D46435D/data/Containers/Bundle/Application/D6DE8BAC-1F65-43ED-AB01-CCFE468B74B5/ffff.app/ffff (0x10ad81e98) and /Users/dfpo/Library/Developer/Xcode/DerivedData/ffff-cwkubzzyiasrnhbioafsmaksvmsv/Logs/iOSInjectionProject/build/Debug-iphonesimulator/InjectionBundle1.bundle/InjectionBundle (0x123f002d0). One of the two will be used. Which one is undefined. 3 injections performed so far. Injection: Ignore any warning, Swizzled ViewController 0x123f002d0 -> 0x10ad81e98

[johnno1962]

That's what it looks like when injection is working.

[suadbay]

I get the same thing with @songxing10000 , but the simulator does not update itself, the views?

[johnno1962]

You need to re-open the View controller or call viewDidLoad: on your viewController class to have the views update. This is generally done from inside an “@objc injected()” method in your class.

[songxing10000]

@johnno1962 do you mean I should pop the viewController and then push this viewController to see the the code change on this viewController effect

[songxing10000]

get it

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

}
- (void)injected {

     self.view.backgroundColor = [UIColor whiteColor];

}

@end

your code should put in method injected