Deferred deeplinks support
This is an archived version of documentation. You can find the current documentation for all platforms here.
A deferred deeplink is used to transfer parameters to the application at the first start. These parameters can be used to perform actions in the application (to open specific application screen, to display certain content, etc.) depending on the source that led the user.
Unlike regular deeplinks, deferred deeplinks only work at the first application launch.
How deferred deeplinks work
The following scheme shows the deferred deeplinks workflow:
- A user taps a tracking link that contains parameters of a deferred deeplink.
- The tracking URL directs the user to the application store.
- The user downloads the application.
- After the first application start, the deferred deeplink parameters are sent to the application. You should perform a request to get the parameters.
Error descriptions
The DeferredDeeplinkListener and DeferredDeeplinkParametersListener interfaces contain descriptions of errors that may occur when making the request:
NOT_A_FIRST_LAUNCH
-
The parameters or deferred deeplink can't be obtained since they can only be requested at the initial application start.
The first launch of the application is the session of the process (runtime environment, virtual machine) during which the user first requests the parameters. If the deeplink is present at the time of the request, the listener is invoked synchronously in the same thread. At the next start of the process, the library no longer sees the deferred deeplink and the
NOT_A_FIRST_LAUNCH
error is returned. PARSE_ERROR
- Depending on the interface, the error means the following:
- If the DeferredDeeplinkListener interface is used: couldn't find the deferred deeplink. This may happen if the referrer didn't contain the
appmetrica_deep_link
parameter. - If the DeferredDeeplinkParametersListener interface is used: the deferred deeplink doesn't contain valid parameters.
The
PARSE_ERROR
error is returned if one of the following conditions is not met:INSTALL_REFERRER
should contain theappmetrica_deep_link
parameter.- The
appmetrica_deep_link
parameter value must contain the valid URI. - There must be at least one query parameter in the deeplink URI.
A valid deeplink example:
sampleapp://samplepath?sampleparam1=samplevalue1
.Attention. The maximum number of characters that can be transferred in the deferred deeplink parameters is 7475.