Create Dynamic Links with C++

You can create short or long Dynamic Links with the Firebase Dynamic Links API. The API takes several optional parameter structures to build links. Short links can also be created from a previously generated long link. Firebase Dynamic Links generates a URL like the following:

https://example.page.link/WXYZ

The C++ SDK works for both Android and iOS, with some additional setup required for each platform.

Before you begin

Use the Firebase console

If you want to generate a single Dynamic Link, either for testing purposes, or for your marketing team to easily create a link that can be used in something like a social media post, the simplest way would be to visit the Firebase console and create one manually following the step-by-step form.

Using the Firebase Dynamic Links API

Create and initialize App

Before you can create Dynamic Links, you'll need to create and initialize a firebase::App object.

Include the header file for firebase::App:

#include "firebase/app.h"

The next part varies depending on your platform:

app = ::firebase::App::Create(::firebase::AppOptions("APPLICATION NAME"), jni_env, activity);

app = ::firebase::App::Create(::firebase::AppOptions("APPLICATION NAME"));

Initialize Dynamic Links library

Before creating a Dynamic Link, you must first initialize the Dynamic Links library:

::firebase::dynamic_links::Initialize(app, null);

Creating a long Dynamic Link from parameters

To create a Dynamic Link, create a DynamicLinkComponents object, setting any of the optional members for additional configuration, and passing it to dynamic_links::GetShortLink or dynamic_links::GetLongLink.

The following minimal example creates a long Dynamic Link to https://www.example.com/ that opens with your Android app com.example.android.package_name and iOS app com.example.ios:

firebase::dynamic_links::IOSParameters ios_parameters("com.example.ios");

firebase::dynamic_links::AndroidParameters android_parameters(
    "com.example.android.package_name");

firebase::dynamic_links::DynamicLinkComponents components(
    "https://www.example.com/", "example.page.link");
components.android_parameters = &android_parameters;
components.ios_parameters = &ios_parameters;

firebase::dynamic_links::GeneratedDynamicLink long_link =
    firebase::dynamic_links::GetLongLink(components);

Creating a short Dynamic Link

To create a short Dynamic Link, pass a previously generated long link to GetShortLink or build DynamicLinkComponents the same way as above.

GetShortLink optionally takes an extra DynamicLinkOptions config parameter with PathLength; this allows you to control how the link should be generated. Generating a short link requires a network request to the Firebase backend, so GetShortLink is asynchronous, returning a Future<GeneratedLink>.

For example:

firebase::dynamic_links::DynamicLinkOptions short_link_options;
short_link_options.path_length = firebase::dynamic_links::kPathLengthShort;

firebase::Future<firebase::dynamic_links::GeneratedDynamicLink> result =
    firebase::dynamic_links::GetShortLink(components, short_link_options);

If your program has an update loop that runs regularly (say at 30 or 60 times per second), you can check the results once per update:

if (result.status() == firebase::kFutureStatusComplete) {
  if (result.error() == firebase::dynamic_links::kErrorCodeSuccess) {
    firebase::dynamic_links::GeneratedDynamicLink link = *result.result();
    printf("Create short link succeeded: %s\n", link.url.c_str());
  } else {
    printf("Created short link failed with error '%s'\n",
           result.error_message());
  }
}