How get extra parameter from dynamic link using Firebase?

Question

I have created dynamic link manually and I set some additional parameters on the link, like this:

https://XXXXX.goo.gl/?link=https%3A%2F%2Fairbanq.send.com%2Fsendmoney&apn=com.xxxx.xxxx&amv=1&username=Adri&amount=7.00

But when the app is opened I just get without the additional parameters:

https:// airbanq.send.com/sendmoney

I am using this sample code from:

https://github.com/firebase/quickstart-android/tree/master/dynamiclinks

public String buildDeepLink() {
    // Get the unique appcode for this app.
    String appCode = AirBanqApp.mContext.getString(R.string.app_code);

    // Get this app's package name.
    String packageName = AirBanqApp.mContext.getPackageName();

    // Build the link with all required parameters
    Uri.Builder builder = new Uri.Builder()
            .scheme("https")
            .authority(appCode + ".app.goo.gl")
            .path("/")
            .appendQueryParameter("link", deepLink)
            .appendQueryParameter("apn", packageName);

    // If the deep link is used in an advertisement, this value must be set to 1.
    if (isAd) {
        builder.appendQueryParameter("ad", "1");
    }

    // Minimum version is optional.
    if (minVersion > 0) {
        builder.appendQueryParameter("amv", Integer.toString(minVersion));
    }

    if (!TextUtils.isEmpty(androidLink)) {
        builder.appendQueryParameter("al", androidLink);
    }

    if (!TextUtils.isEmpty(playStoreAppLink)) {
        builder.appendQueryParameter("afl", playStoreAppLink);
    }

    if (!customParameters.isEmpty()) {
        for (Map.Entry<String, String> parameter : customParameters.entrySet()) {
            builder.appendQueryParameter(parameter.getKey(), parameter.getValue());
        }
    }

    // Return the completed deep link.
    return builder.build().toString();
}

Can you paste some code showing us how you're getting what you're getting? ...just the relevant part. — Andrej
– Andrej, Commented Jul 7, 2016 at 16:58
i solve my issue man, thanks i will post my code, before and after the fix — Bryan Acuña Núñez
– Bryan Acuña Núñez, Commented Jul 7, 2016 at 18:27
We can use Firebase POST URl to generate Refer this answer link — Naveen Kumar M
– Naveen Kumar M, Commented Jan 17, 2017 at 12:30

rozsazoltan · Accepted Answer · 2025-08-23 08:47:16Z

22

I solved my issue, I assumed the "apn", "username" and "amount" they were part of the parameter "LINK" in the URL, but no when I add the "&". I am adding parts to the main URL, to add parameters to the "LINK" field I need to create first the URL like this:

https://airbanq.send.com/sendmoney?username=Adri&amount=7.00

then use URLEncoder.encode(queryParameters.toString(), "UTF-8"); to generate this:

https%3A%2F%2Fairbanq.send.com%2Fsendmoney%253Fusername%253DAdri%2526amount%253D7.00

and then append to main URL:

https://xxxx.app.goo.gl/?link=https%3A%2F%2Fairbanq.send.com%2Fsendmoney%253Fusername%253DAdri%2526amount%253D7.00&apn=com.airbanq.airbanqapp&amv=1

public String buildDeepLink() {
    // Get the unique appcode for this app.
    String appCode = AirBanqApp.mContext.getString(R.string.app_code);

    // Get this app's package name.
    String packageName = AirBanqApp.mContext.getPackageName();
    String queryParamters = "";
    try {
        queryParamters = generateQueryParameters();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }

    if (!TextUtils.isEmpty(queryParamters)) {
        deepLink = deepLink + queryParamters;
    }
    // Build the link with all required parameters
    Uri.Builder builder = new Uri.Builder()
            .scheme("https")
            .authority(appCode + ".app.goo.gl")
            .path("/")
            .appendQueryParameter("link", deepLink)
            .appendQueryParameter("apn", packageName);

    // If the deep link is used in an advertisement, this value must be set to 1.
    if (isAd) {
        builder.appendQueryParameter("ad", "1");
    }

    // Minimum version is optional.
    if (minVersion > 0) {
        builder.appendQueryParameter("amv", Integer.toString(minVersion));
    }

    if (!TextUtils.isEmpty(androidLink)) {
        builder.appendQueryParameter("al", androidLink);
    }

    if (!TextUtils.isEmpty(playStoreAppLink)) {
        builder.appendQueryParameter("afl", playStoreAppLink);
    }

    // Return the completed deep link.
    return builder.build().toString();
}

private String generateQueryParameters() throws UnsupportedEncodingException {
    StringBuilder queryParameters = new StringBuilder();
    //server purposes
    queryParameters.append("?*code*");

    if (!customParameters.isEmpty()) {
        for (Map.Entry<String, String> parameter : customParameters.entrySet()) {
            queryParameters.append(String.format("&%1s=%2s", parameter.getKey(), parameter.getValue()));
        }
    }
    return URLEncoder.encode(queryParameters.toString(), "UTF-8");
}

edited Aug 23 at 8:47

rozsazoltan

18.5k8 gold badges50 silver badges147 bronze badges

answered Jul 7, 2016 at 18:32

Bryan Acuña Núñez

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9 Comments

curtis1000 Over a year ago

Thanks, working on the exact same thing right now as well!

Faris Jameel Over a year ago

How to send a retrieve those custom attributes in android?

Bryan Acuña Núñez Over a year ago

Faris, to send those parameters i am using an sms provider, you can use whatsapp, Messenger, email, Hangouts or whatever that you want.. To retrieve the information i am using Firebase, here you can see how to add Firebase firebase.google.com/docs/android/setup Here some example code github.com/firebase/quickstart-android/tree/master/dynamiclinks This is my code (just the relevant part)

Hammad Nasir Over a year ago

I'm facing a similar issue: stackoverflow.com/q/42093902/6144372 Please help in resolving it.

Bryan Acuña Núñez Over a year ago

Is a set or Map with additional parameters that i need in the deeplink, generateQueryParameters is to generate basically the query string

|

Edwinner · Accepted Answer · 2019-05-18 06:24:30Z

0

The official answer is that you need to escape/encode a URL string so that it can be safely placed inside a URL query. I wish Firebase dynamic links would just say that about the link.

For Golang: url.QueryEscape(urlstring)

edited May 18, 2019 at 6:24

answered May 18, 2019 at 6:13

Edwinner

2,7072 gold badges26 silver badges39 bronze badges

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