Need some help with an interesting dilema I have. ...

# compose-android

[Colton Idle]

Need some help with an interesting dilema I have.

I need to show a webview while saving its state (this is because the webview is 1 tab out of 4 for my app and so when user goes to tab 2-4, then back to 1, I want the webview to still have it's contents). I followed the sample here https://github.com/google/accompanist/blob/main/sample/src/main/java/com/google/accompanist/sample/webview/WebViewSaveStateSample.kt#L84-L90

LaunchedEffect(navigator) {
        val bundle = webViewState.viewState
        if (bundle == null) {
            // This is the first time load, so load the home page.
            navigator.loadUrl("<https://bbc.com>")
        }
    }

Easy! But now I need to add an auth header. Okay not bad

navigator.loadUrl("<https://bbc.com>", "AUTH" to $token)

but now my issue is that when the token is updated, it doesn't cause a reload. How would you solve this?

[Colton Idle]

So basically my current code is

LaunchedEffect(navigator) {
        val bundle = webViewState.viewState
        if (bundle == null) {
            // This is the first time load, so load the home page.
            navigator.loadUrl("<https://bbc.com>", "AUTH" to $token)
        }
    }

but not sure how to best update this. If I try to add a key of token to the launchedEffect it of course doesn't get called because the bundle isn't null.

It's almost as if it'd be helpful if I could look into the current webview and see if there is already a header applied, but it doesn't seem possible to get request headers from a webview instance.

[MR3Y]

What about ?

var isFirstTime by rememberSaveable(webViewState) { mutableStateOf(true) }
....
// Inside bundle == null check
isFirstTime = false
// Add separate LaunchedEffect block keyed with token
LaunchedEffect(token) {
    if(!isFirstTime) {
        navigator.loadUrl(url, token)
    }
}

More or less something like this. I'm on mobile so code formatting might look weird :).

[Colton Idle]

Let me give that a shot

[zt]

Have you seen this library? https://github.com/KevinnZou/compose-webview-multiplatform

[Colton Idle]

I have not. Let me see if they have something novel there. either way TIL of a KMP webview. nice!