Custom tabs provider not working

[davidz25]

Trying to use the ProvisioningModelBottomSheet from #1679 in Multipaz Wallet and I got this error:

2026-04-17 06:34:14.085  8002-8002  CustomTabsClient        org.multipaz.wallet.android          W  Unable to find any Custom Tabs packages, you may need to add a <queries> element to your manifest. See the docs for CustomTabsClient#getPackageName.
2026-04-17 06:34:14.085  8002-8002  OAuthBrowser            org.multipaz.wallet.android          W  No Custom Tabs provider found

and it sits in the bottomsheet saying "Launching browser, continue there".

This is when running it on the emulator.

[davidz25]

Looks like adding

    <queries>
        <intent>
            <action android:name="android.support.customtabs.action.CustomTabsService" />
        </intent>
    </queries>

to androidApp/src/main/AndroidManifest.xml fixes it. However this raises the question if we can always assume there's a Custom Tabs provider available and if not, we should probably handle the fallback by what we did before PR #1679.

[davidz25]

Btw, I suspect the only reason it works in samples/testapp is that we already have this permission

    <!-- For displaying name/icon of application requesting credential -->
    <uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"
        tools:ignore="QueryAllPackagesPermission" />

[soulkeykim]

Implemented a fix for #1687: added Custom Tabs query to samples/testapp AndroidManifest and added a fallback in EvidenceRequestOAuthBrowser to open ACTION_VIEW when no custom tabs provider is available, so provisioning no longer hangs on provider-missing flows. Happy to open PR with these two-file change if needed.