Apps cannot launch in iOS simulator

[andydotxyz]

It seems to relate to invalid codesign signature

[changkun]

I don't have the problem when I am using darwin/amd64, but the app indeed cannot launch in the iOS simulator when using darwin/arm64. Hence I assume the issue is targeting M1 macs?

[andydotxyz]

I have this problem in darwin/amd64 as well - what steps did you follow to get it working? (maybe I have some broken cert?)

[changkun]

I have this problem in darwin/amd64 as well - what steps did you follow to get it working? (maybe I have some broken cert?)

What's the expected procedure to access the Xcode project? or what's the current procedure to run apps in iOS simulator?

I can run on darwin/amd64 via:

1. Turn on -x and -work build tag in the cmd/fyne/internal/mobile/build.go
2. fyne package -os ios
3. Open the temp folder for building the Xcode project, then run it on a simulator.

It might be a problem with the cert, some suggests to turn cert to a always trust, but I don't see myself need their suggested steps: https://developer.apple.com/forums/thread/106711

[andydotxyz]

I get signature not valid: -67050. Did you certainly build without an -profile parameter?
When I execute the package command you issued I see

 No profiles for 'io.fyne.demo' were found: Xcode couldn't find any iOS App Development provisioning profiles matching 'io.fyne.demo'. (in target 'main' from project 'main')

And if I specify the profile but not certificate I get:

error: An empty identity is not valid when signing a binary for the product type 'Application'. (in target 'main' from project 'main')

[changkun]

This is my build process:

iossimulator.mp4

[andydotxyz]

Oh I see - running the temporary folder is the key here.
I guess we need a better process overall - what I would like is if the build asset can be dragged onto the simulator to run.
Is that what #2495 fixes?

[changkun]

I see the issue. I also pushed a new commit in #2495, which should solve the issue for me. Does the latest #2495 solve the problem for you?

[changkun]

I guess we need a better process overall

I just noticed there is a install subcommand in the fyne command, is that an expected official approach to deploy to a target system?

How about adding a target iossimulator to the install command, too?

fyne install -target ios demo.app          # install to a physical device
fyne install -target iossimulator demo.app # install to the simulator

[andydotxyz]

I just noticed there is a install subcommand in the fyne command, is that an expected official approach to deploy to a target system?

Yes :)

Adding that for simulator builds would be ideal - do you have ideas about how we could make that happen?

[changkun]

I just pushed a new commit in #2495

This is how it works in a video:

deploy.mp4

Does this match what we want to do here?

[andydotxyz]

Does this match what we want to do here?

Slick, that looks exactly like the trick :)

[changkun]

Close because #2495 is merged in develop

[andydotxyz]

(fixed the milestone as this solution adds a build option so isn't in the bugfix release)