Add links to your Transit pass

There are four ways to add links to a transit pass.

• Use TransitClass.LinksModuleData to add links to all transit passes that are associated with the TransitClass.
• Use TransitObject.LinksModuleData to add a link to a specific transit pass TransitObject.
• Use TransitObject.appLinkData to place an app link at the bottom of that particular Pass.
• Use TransitClass.appLinkData to place an app link at the bottom of all the passes of that class.

One benefit of app linking is that it empowers your call-to-action to navigate users to your branded experiences from Google Wallet. Links with this feature appear at the bottom of the Pass.

Feature example

Issuer

Set the app link on your Google Wallet pass

For a given transit pass, set the field TransitObject.appLinkData to the URI or Package name of your app or website.

See the format and context of the appLinkData field in the following source code: The displayText field is limited to 30 characters.

Note: To deep link to a specific view within an app you must use webAppLinkInfo.

  {
    "id": string,
    "classId": string,
    …
    …
    …
    "appLinkData": {
      "androidAppLinkInfo": {
        "appTarget": {
          "packageName": "com.google.android.gm",
        }
      },
      "webAppLinkInfo": {
        "appTarget": {
           "targetUri": {
              "uri": "https://mail.google.com/mail/",
              "description": "Web link for Gmail"
           }
        }
      }
      "displayText": {
        "defaultValue": {
           "value": "Our awesome app!"
        }
      }
    }
  }

For posterity the following implementation will also work.

{
  "id": string,
  "classId": string,
  …
  …
  …
  "appLinkData": {
    "androidAppLinkInfo": {
      "appTarget": {
        "targetUri": {
          "uri": "https://play.google.com/store/apps/details?id=com.google.android.gm",
            "description": "Play store link for Gmail app"
        }
      }
    }
  }
}