feat(mobile): allow contact picking for names in mobile app

[samolego]

Hi there!

I love immich but thought it could use a minor improvement when naming your persons. If you do it via mobile app, we have access to user's contact list, so we can use it to suggest people names.

I've implemented that, you can see how it looks in the attached screenshots:

Here's a (very blurred) video as well, I had little time to edit but I hope you get the point:

immich.mp4

Edit: better video with some fake contacts:

screen-20250205-110824.mp4

I'm opening this as a draft as design (especially of dropdown) can be improved and I'd like to get a feedback on what you think

[alextran1502]

Hello, this is very cool!

[samolego]

I've since done some other designs but was actually the most satisfied with this one. I'm marking this as open for review.

[phipz]

I understand this only checks the Android phone local contacts.

What about:

1. Checking first if the name already exists on the server and merge the faces, like on the WebUI?
2. What about the iOS app?

[samolego]

This uses https://pub.dev/packages/fast_contacts so it should work on iOS too. I don't have an iPhone, so I couldn't test it. Maybe someone else can?

Merging faces is possible but imho that should be a separate PR?

[NicholasFlamy]

If you deny Contacts permission (people might not want to have immich accessing contacts), it fails to achieve contacts permissions and puts away the keyboard every time, so I have to tap the text box:

Screen_Recording_20250204_190716.mp4

Regular app:

Debug build of your branch (the box is wider, just something to notice):

Also, with Contacts allowed, it works great (tested on Android), shows the contact names as you type and when you tap on one it fills the name in immich for you. Maybe someone can add a feature to set the contact photo right then and there (similar to Samsung Gallery (and maybe GPhotos)).

[samolego]

Thanks for spotting! I fixed the keyboard issue, also set the dialog width to MediaQuery.of(context).size.width * 0.6, which looks similar to before.

After first time (after asking for the permission) keyboard can still be hidden, though it works fine after that. I couldn't get it to show right after clicking on the permission dialog though.

[NicholasFlamy]

After first time (after asking for the permission) keyboard can still be hidden, though it works fine after that. I couldn't get it to show right after clicking on the permission dialog though.

To be clear, it works fine for me if I allowed the Contacts permission. The video is after I denied Contacts permission and Android doesn't allow the app to ask again (cause I denied at least twice in a row).

Edit: I will test this again when I get home.

[samolego]

To be clear, it works fine for me if I allowed the Contacts permission. The video is after I denied Contacts permission and Android doesn't allow the app to ask again

Yeah, got that - it should be fixed with the above commits :).

[NicholasFlamy]

To be clear, it works fine for me if I allowed the Contacts permission. The video is after I denied Contacts permission and Android doesn't allow the app to ask again

Yeah, got that - it should be fixed with the above commits :).

It behaves correctly now. There is a very slight stutter while it opens so I need to build a release apk and test that to confirm if it's this PR or if it's just the debug build being JIT or wtv.

[NicholasFlamy]

Good job! It works great! No issues with the permission allowed or denied.