Reset state

[yoobi]

Hello,

How can we reset the state of the widget ?

I'm using XML with private

val sdk = FriendlyCaptchaSDK(context, "global")
val widget = sdk.createWidget(key, "light")

When I do a network request and it returns error, the challenge-response is no longer valid and I need to reset the state of the captcha so user can verify again. I tried using widget.reset() but it's not doing anything

[gzuidhof]

Hi Yoobi,

That sounds like a bug! I looked into it today trying to reproduce it, but wasn't able to.

In the debug app the widget gets reset on every submission, the relevant code for that is here. The widget is created some lines above using sdk.createWidget(), just like you are doing 🤔 Maybe that file can help you find where you may be doing things differently.

Do you maybe have a larger snippet of code, or perhaps something gets logged to help figure out where things are not working?

[yoobi]

I copy pasted the exact same code in my sample app and it's not working.

Have you tried creating an app that use implementation("com.friendlycaptcha.android:friendly-captcha-android:1.1.0") instead of relying directly on implementation(project(":lib")) ?

[gzuidhof]

Oh, sorry about that.. I have not, I was hoping they would be equivalent, but perhaps something gets lost in the build/bundle step 🤔

I'm trying to theorize a bit why this may be different.. Some context:

There are two messages that go from app code (in Kotlin/Java) -> the WebView in Javascript. Only those that start and reset the widget. I suppose communication the other way around does work.

// Called by the Android app. The message is a JSON string that is URL encoded.
function receiveMessage(msg) {
    msg = decodeURIComponent(msg);
    var m;
    try {
      m = JSON.parse(msg);
    }
    catch (e) {
        console.error("Error parsing JSON:", msg);
    }

    if (m.type === "frc:widget.start") {
        handle.start();
    } else if (m.type === "frc:widget.reset") {
        handle.reset();
    }
}

The "message" gets sent like the following:

    /**
     * Send a string to the WebView. It does basic escaping, but it's not foolproof.
     */
    private fun sendString(message: String) {
        val encoded = URLEncoder.encode(
            message.replace("'", "\\'").replace(" ", "%20"),
            "UTF-8",
        )

        (webView.context as? android.app.Activity)?.runOnUiThread {
            // We use `loadUrl` instead of `evaluateJavascript` to support Android < 4.4.
            webView.loadUrl("javascript:window.receiveMessage(%27$encoded%27)")
        }

    }