openInWebView fails on iOS with simple call

[rubenstolk]

Calling the Capacitor InAppBrowser plugin’s openInWebView method on iOS fails with an invalid input parameters error, even when passing the minimal required arguments.

Steps to Reproduce

// Case 1: minimal call
Capacitor.Plugins.InAppBrowser.openInWebView({
  url: "https://google.com"
})

// Case 2: with empty options
Capacitor.Plugins.InAppBrowser.openInWebView({
  url: "https://google.com",
  options: {}
})

Expected Behavior

The call should open the URL inside a web view using default options, without requiring additional parameters.

Actual Behavior

Both calls fail with: The 'openInWebView' input parameters aren't valid.

Environment

• Platform: iOS
• Plugin: Capacitor InAppBrowser
• Method: openInWebView

Notes

• The error originates from the guard in the iOS implementation:

guard let options: OSInAppBrowserWebViewModel =
  self.createModel(for: call.getObject("options")) else {
    return self.error(call, type: .inputArgumentsIssue(target: .webView))
}

createModel(for:) returns nil for an empty object, so the call is always rejected unless a very specific options payload is provided.

Expected fix:

Either:

• allow {} as valid input and fall back to default values, or
• document which fields in options are required.

[OS-pedrogustavobilro]

Hey @rubenstolk, thanks for opening this. Most options for openInWebView aren't entirely optional. Maybe they should be, but this was done by design.

We do have default values that you can pass to the openInWebView, using the DefaultWebViewOptions.

E.g.

import { InAppBrowser, DefaultWebViewOptions } from '@capacitor/inappbrowser';

// ...

InAppBrowser.openInWebView({
  url: "https://google.com",
  options: DefaultWebViewOptions
})

Hope this helps.

[rubenstolk]

I've seen that indeed, but felt it isn't very intuitive.