Locales not found when running on Xamarin iOS

[fiftysixkbit]

I am able to deploy on Android but on iOS, I get the following error:

I18NPortable.I18NException: No locales have been found. Make sure you've got a folder called 'Locales' containing embedded resource files (with extensions .txt) in the host assembly

The app has been terminated.

I have a Locales folder in my Core project that contains en.txt and fr.txt.

The exception occurs in App.xaml.cs where I18N gets initialized.

public App()
{
    InitializeComponent();

    I18N.Current
        .SetLogger(text => Debug.WriteLine(text))
        .SetFallbackLocale("en")
        .Init(GetType().GetTypeInfo().Assembly);

    MainPage = new NavigationPage(new LoginPage());
}

[xleon]

You need to set Build Action to Embedded Resource on the properties of every .txt file

[fiftysixkbit]

Yes, the build action is set to Embedded resource for both my en.txt and fr.txt

[xleon]

I have the very same setup and it works fine. Are you sure that GetType().GetTypeInfo().Assembly is the same assembly where .txt files are?

Can you attach a test project that I can try myself?

[eggf]

I got similar problem with iOS devices. I18N-Portable does not choose the correct translation file. For me it seems that the system has mixed up localization codes as you can see in the image.

[xleon]

Interesting. That seams like a bug with french locales. Can you guys confirm it just happens with french? @eggf @bhyip23

[eggf]

No, it is not just with French. Also with Russian, Spanish or Italian language.

[xleon]

Ok, I´ll make some tests to see if I can find a fix or at least to isolate the bug (not sure if this is an iOS bug or a Xamarin bug)

[xleon]

Can you guys tell what version/s of iOS and Xamarin.iOS are giving you trouble?

[eggf]

Visual Studio 2017 Version 15.4.5 Xamarin 4.7.10.38 (34c1b6c) Xamarin.iOS and Xamarin.Mac SDK 11.3.0.47 (51128b8) Visual Studio for Mac Version 7.2.2 (build 11) XCODE Version 9.1 (9B55)

[xleon]

Are you testing on simulator or physical device?

[eggf]

On both with same errors. iOS 11.1

[xleon]

I think we are hitting this exact bug on iOS 11: https://bugzilla.xamarin.com/show_bug.cgi?id=59596 There´s a potential workaround in this comment: https://bugzilla.xamarin.com/show_bug.cgi?id=59596#c8 and this one: https://bugzilla.xamarin.com/show_bug.cgi?id=59596#c26

I was struggling with it for a bit, and I solved issue (in my app) by configuring properly info.plist. Before change in my info.plist I had something like

<key>CFBundleDevelopmentRegion</key>
<string>pl</string>
<key>CFBundleLocalizations</key>
<array>
<string>pl</string>
</array>

Now I changed it to someghing like:

<key>CFBundleDevelopmentRegion</key>
<string>en_US</string>
<key>CFBundleLocalizations</key>
<array>
<string>cs_CZ</string>
<string>da_DK</string>
<string>de_DE</string>
<string>en_US</string>
<string>nl_NL</string>
<string>pl_PL</string>
<string>pt_BR</string>
<string>pt_PT</string>
<string>ru_RU</string>
<string>sv_SE</string>
<string>zh_CN</string>
</array>

When I did it, localization started to work as expected.

[fiftysixkbit]

Just an update for my original problem... I tried to reproduce it with a new project but everything works, so I just moved all my files to the new project.

[xleon]

Please @bhyip23 can you attach your old and new info.plist files in the iOS project? It would be good to know what are the changes affecting this bug

[fiftysixkbit]

Sorry for the late reply, been really busy with other stuff.

The only difference in the info.plist is that the old one had an extra entry:

<key>CFBundleName</key>
<string>My_Application</string>