[in_app_purchase][android] currencySymbol is missing

[dgminhngoc]

Steps to reproduce

Just request ProductDetail from InAppPurchase.instance.queryProductDetails(_kProductIds)

Expected results

Euro symbol is displayed

Actual results

Euro symbol is missing

Code sample

await InAppPurchase.instance.queryProductDetails(_kProductIds);

Screenshots or Video

Logs

Logs

[Paste your logs here]

Flutter Doctor output

Doctor output

flutter doctor -v
[✓] Flutter (Channel stable, 3.19.6, on macOS 14.4.1 23E224 darwin-x64, locale
    de-DE)
    • Flutter version 3.19.6 on channel stable at
      /Users/timnguyen/WorkSpace/SDK/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 54e66469a9 (vor 12 Tagen), 2024-04-17 13:08:03 -0700
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    • Platform android-34, build-tools 34.0.0
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      Studio.app/Contents/jbr/Contents/Home/bin/java
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      17.0.10+0-17.0.10b1087.21-11572160)
    • All Android licenses accepted.

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    • macOS (desktop) • macos  • darwin-x64     • macOS 14.4.1 23E224 darwin-x64
    • Chrome (web)    • chrome • web-javascript • Google Chrome 124.0.6367.92
    ! Error: Browsing on the local area network for Malastare. Ensure the device is unlocked
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      The device must be opted into Developer Mode to connect wirelessly. (code -27)
    ! Error: Browsing on the local area network for iPad von Ngoc. Ensure the device is
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      this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)

[✓] Network resources
    • All expected network resources are available.

• No issues found!

[darshankawar]

@dgminhngoc
What plugin version are you using ? currencySymbol was added as part of flutter/plugins#4115

[dgminhngoc]

@dgminhngoc What plugin version are you using ? currencySymbol was added as part of flutter/plugins#4115

currently I'm using in_app_purchase 3.1.13 and in_app_purchase_storekit 0.3.4 (because in_app_purchase 3.2.0 requires in_app_purchase_storekit 0.3.14 which decodes null "countryCode" value on iOS, I have no idea if this bug related to XCode Storekit so haven't report yet). I tested also in_app_purchase 3.2.0 and this issue remains.

The 2 screenshot are from Emulator - Android 13 with Google Play (currencySymbol is Euro) and from Galaxy S24 - Android 14 (currencySymbol missing)

[darshankawar]

Thanks for the update @dgminhngoc

The 2 screenshot are from Emulator - Android 13 with Google Play (currencySymbol is Euro) and from Galaxy S24 - Android 14 (currencySymbol missing)

Could this be due to the locale you are using on both the emulators / devices ?

I see that the Euro symbol is to the left and to the right in respective screenshots ? Can you check if this is the case ?

[dgminhngoc]

Ah yes, locale on Emulator - Android 13 with Google Play is US/us whereas on my Galaxy S21 (S24 was typo, but it doesn't matter) is DE/de. After locale of emulator is changed from US/us to De/de, the price is changed automatically from "€4.99" to "4.99 €" and currentcySymbol is now empty.

on my Galaxy S21, I tested with the current version of my app downloaded from Google Play Store (I built with Flutter 3.7 at that time) and saw no issues, currencySymbol is always available

[darshankawar]

Thanks for the update. Keeping the issue open for tracking.

[reidbaker]

@dgminhngoc I am trying to figure out the conditions that cause the issue. Is it that the locale needs to change or that this is a regression from version x to version y?

If it is a locale change what are the good and bad locale's?
If it is a version change what are the good and bad versions?

[dgminhngoc]

I think the problem is from this function of google_play_product_detail.dart
/// Extracts the currency symbol from [formattedPrice].
///
/// Note that a currency symbol might consist of more than a google_play_product_detail.dartsingle character.
///
/// Just in case, we assume currency symbols can appear at the start or the
/// end of [formattedPrice].
///
/// The regex captures the characters from the start/end of the [String]
/// until the first/last digit or space.
static String? _extractCurrencySymbol(String formattedPrice) {
return RegExp(r'^[^\d ]|[^\d ]$').firstMatch(formattedPrice)?.group(0);

it cannot extract currencySymbol from the price "4,99 €" but works when the price is "€4.99".
interestingly in both cases, currencyCode is always "EUR". Isn't it better if simpleCurrencySymbol is simply called instead ?
https://api.flutter.dev/flutter/intl/NumberFormat/simpleCurrencySymbol.html

[reidbaker]

I tried to use dartpad to validate the regular expression.

void main() {
  String formattedPrice = '4,99 €';
  print(RegExp(r'^[^\d ]|[^\d ]$').firstMatch(formattedPrice)?.group(0));
}

and it matches just fine.

I dont think we should use https://api.flutter.dev/flutter/intl/NumberFormat/simpleCurrencySymbol.html in the plugin because we are trying to expose google play vended values. As a work around this bug then authors could choose to use it though.