1.0.0

General

RuStore In-app updates SDK supports the current version of the application on the user's device. This helps the user see updates, evaluate performance improvements and the result of bug fixes.

User scenario example

Use RuStore In-app updates SDK to implement various update methods. Currently supported: delayed, silent (without UI from RuStore) and forced update.

Check out the sample application to learn how to properly integrate the update SDK.

Prerequisites

For the RuStore In-app updates SDK to work, the following conditions must be met.

App uploaded to RuStore Console.
App passed moderation (you don't have to publish the app).

Important

Test build signature (for example: debug) of the app must match the signature of the app build that was uploaded to the console and passed moderation (for example, release).

Android 8.0 or later.
RuStore app version on the device is up-to-date.
User is authorized in RuStore.
RuStore app is allowed to install applications.

Connecting to the project

To connect, follow these steps.

Copy the contents of the Plugins folder from the official RuStore repository on gitflic to the Plugins folder inside your project.
Restart Unreal Engine.
In the list of plugins (Edit > Plugins > Project > Mobile) check the plugins RuStoreAppUpdate and RuStoreCore.
Connect the RuStoreCore and RuStoreAppUpdate modules in the YourProject.Build.cs file in the PublicDependencyModuleNames list.
In the project settings (Edit > Project Settings > Android) set the Minimum SDK Version parameter to at least 24 and the Target SDK Version parameter to at least 31.

Create update manager

Before calling library methods, you must create an update manager.

Initialization

Before calling library methods, you must initialize it.

Calling the Init method
URuStoreAppUpdateManager::Instance()->Init();

All operations on the manager object are also available from Blueprints. Below is an example of initialization.

info

The Init call binds the object to the scene root, and if further work with the object is no longer planned, the Dispose method must be executed to free up memory. Calling the Dispose method will unbind the object from the root and safely terminate all requests sent.

###Deinitialization

Calling the Dispose Method
URuStoreAppUpdateManager::Instance()->Dispose();

Initialization check

If you need to check whether a library has been initialized, use the GetIsInitialized method. The method returns a value of type bool:

true - if the library is initialized;
false - if Init has not yet been called.

bool bIsInitialized = URuStoreAppUpdateManager::Instance()->GetIsInitialized();

Check for updates

Before requesting an update, check to see if an update is available for your application. To check for updates, call the method GetAppUpdateInfo. When calling this method, the following conditions are checked.

The current version of RuStore is installed on the user's device.
The user and the app are not banned in RuStore.
RuStore app is allowed to install applications.
User is authorized in RuStore.

In response to this method, you will receive a FURuStoreAppUpdateInfo object, which will contain information about the need for an update. Request this object in advance and cache it to prompt the user to start downloading the update without delay and at the user's convenience.

Each GetAppUpdateInfo request returns requestId, that is unique within a single application run. Each event returns requestId of the request that triggered the event.

Вызов метода GetAppUpdateInfo
long requestId = GetAppUpdateInfo(
    [](long requestId, TSharedPtr<FURuStoreAppUpdateInfo, ESPMode::ThreadSafe> response) {
        // Process response
    },
    [](long requestId, TSharedPtr<FURuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    }
);

The Success callback notification returns a FURuStoreAppUpdateInfo structure in the Response parameter. The structure contains a set of parameters necessary to determine whether an update is available.

Структура FURuStoreAppUpdateInfo
USTRUCT(BlueprintType)
struct RUSTOREAPPUPDATE_API FURuStoreAppUpdateInfo
{
    GENERATED_USTRUCT_BODY()
    
    FURuStoreAppUpdateInfo()
    {
        updateAvailability = EURuStoreUpdateAvailability::UNKNOWN;
        installStatus = EURuStoreInstallStatus::UNKNOWN;
        availableVersionCode = 0;
    }

    UPROPERTY(BlueprintReadOnly)
    EURuStoreUpdateAvailability updateAvailability;
    
    UPROPERTY(BlueprintReadOnly)
    EURuStoreInstallStatus installStatus;
    
    UPROPERTY(BlueprintReadOnly)
    int64 availableVersionCode;
};

updateAvailability — update availability:
- UNKNOWN (uint8 = 0) — by default;
- UPDATE_NOT_AVAILABLE (uint8 = 1) — no update needed;
- UPDATE_AVAILABLE (uint8 = 2) — an update is required to be downloaded or an update has already been downloaded to the user's device;
- DEVELOPER_TRIGGERED_UPDATE_IN_PROGRESS (uint8 = 3) — the update is already downloading or installation has already started.
installStatus — update installation status if the user is already installing the update at the current time:
- UNKNOWN (uint8 = 0) — by default;
- DOWNLOADED (uint8 = 1) — downloaded;
- DOWNLOADING (uint8 = 2) — downloading;
- FAILED (uint8 = 3) — error;
- PENDING (uint8 = 5) — in anticipation.
availableVersionCode — update version code.

info

An update download can only be started if the updateAvailability field contains the valueUPDATE_AVAILABLE.

The callback Failure returns structure with error information. The error structure is described in the Error Handling section.

Download and install updates

Using listener

After confirming the availability of starting the update process, you can receive the update download status in the OnStateUpdatedInstanceEvent event of the URuStoreAppUpdateManager object.

Событие OnStateUpdatedInstanceEvent
DECLARE_DYNAMIC_MULTICAST_DELEGATE_TwoParams(FRuStoreOnStateUpdatedInstanceDelegate, int64, listenerId, FURuStoreInstallState, state);

UPROPERTY(BlueprintAssignable, Category = "RuStore AppUpdate Manager")
FRuStoreOnStateUpdatedInstanceDelegate OnStateUpdatedInstanceEvent;

Subscribe to a listener event
FScriptDelegate Delegate;
Delegate.BindUFunction(YourUObjectPtr, FName("YourCallbackMethod"));
URuStoreAppUpdateManager::Instance()->OnStateUpdatedInstanceEvent.Add(Delegate);

Пример метода обработчика обратного вызова
UFUNCTION()
void YourCallbackMethod(int64 listenerId, FURuStoreInstallState state) {
    // Process callback
}

Subscribing to a listener event from Blueprint.

The OnStateUpdatedInstanceEvent event returns a FURuStoreInstallState object in the state parameter describing the current download status. The FURuStoreInstallState structure is described in the Checking update download status section.

Listener interface

The URuStoreAppUpdateManager class implements a standard listener. You can create your own listener class using the IRuStoreInstallStateUpdateListenerInterface interface.

Интерфес IRuStoreInstallStateUpdateListenerInterface
UINTERFACE(Blueprintable)
class RUSTOREAPPUPDATE_API URuStoreInstallStateUpdateListenerInterface : public UInterface
{
    GENERATED_BODY()
};

class IRuStoreInstallStateUpdateListenerInterface
{
    GENERATED_BODY()

public:
    UFUNCTION(BlueprintCallable, BlueprintNativeEvent, Category = "RuStore InstallStateUpdate Listener Interface")
    void OnStateUpdated(int64 listenerId, FURuStoreInstallState& state);
};

The OnStateUpdated event returns an FURuStoreInstallState object in the state parameter describing the current download status. The FURuStoreInstallState structure is described in the Checking update download status section.

Calling the RegisterListener method registers a listener.

caution

For the standard URuStoreAppUpdateManager listener, a call to RegisterListener is not required.

Method call RegisterListener
int64 listenerId = URuStoreAppUpdateManager::Instance()->RegisterListener(YourListenerPtr);

YourListenerPtr is a pointer to an object of a class that implements the IRuStoreInstallStateUpdateListenerInterface interface.

Check update status

The FURuStoreInstallState structure describes the current download status.

Структура FURuStoreInstallState
USTRUCT(BlueprintType)
struct RUSTOREAPPUPDATE_API FURuStoreInstallState
{
    GENERATED_USTRUCT_BODY()
    
    FURuStoreInstallState()
    {
        bytesDownloaded = 0;
        totalBytesToDownload = 0;
        percentDownloaded = 0;
        installStatus = EURuStoreInstallStatus::UNKNOWN;
        installErrorCode = EURuStoreInstallErrorCode::ERROR_UNKNOWN;
    }

    UPROPERTY(BlueprintReadWrite)
    int64 bytesDownloaded;

    UPROPERTY(BlueprintReadWrite)
    int64 totalBytesToDownload;

    UPROPERTY(BlueprintReadWrite)
    float percentDownloaded;

    UPROPERTY(BlueprintReadWrite)
    EURuStoreInstallStatus installStatus;

    UPROPERTY(BlueprintReadWrite)
    EURuStoreInstallErrorCode installErrorCode;
};

bytesDownloaded - number of bytes downloaded;
totalBytesToDownload - the total number of bytes that need to be downloaded;
percentDownloaded - percentage of update download progress;
installStatus — update installation status if the user is already installing the update at the current time:
- UNKNOWN (int == 0) - default status.
- DOWNLOADED (int == 1) - downloaded.
- DOWNLOADING (int == 2) - loading.
- FAILED (int == 3) is an error.
- PENDING (int == 5) - pending.

PLEASE ATTENTION

The update SDK does not have a special status for the situation when the user has canceled the update download. If the user aborted the update during the download phase, installStatus returns the original status UNKNOWN (0) with a Download button.

If the user has already downloaded the update, but canceled the installation, then installStatus will return the value DOWNLOADED (1).

Let's consider the following options.

The user started downloading the update, but canceled the download - in this case:
- updateAvailability - UPDATE_AVAILABLE (2);
- installStatus - UNKNOWN (0).
The user downloaded the update file, but did not install it - in this case:
- updateAvailability - UPDATE_AVAILABLE (2);
- installStatus - DOWNLOADED (1).

installErrorCode - error code during download. Error codes are described in the Error Handling section.

Delete listener

If you no longer need the listener, use the UnregisterListener method to remove the listener, passing the previously registered listener to the method. UnregisterListener must be called on all listeners before the application exits.

caution

For the standard URuStoreAppUpdateManager listener, calling UnregisterListener when the application is terminated is not required.

Вызов метода UnregisterListener
bool bIsDone = URuStoreAppUpdateManager::Instance()->UnregisterListener(YourListenerPtr);

YourListenerPtr is a pointer to an object of a class that implements the IRuStoreInstallStateUpdateListenerInterface interface.

If you implement your own listener, you can also unregister the standard listener to save resources.

Вызов метода UnregisterListener
auto instance = URuStoreAppUpdateManager::Instance();
bool bIsDone = instance->UnregisterListener(instance);

Start downloading update

Delayed update

Description of deferred update scenario

Update with UI from RuStore

The user will be shown a dialog with the RuStore UI to confirm the update.
When you click the Update button, a dialog box will appear to confirm the installation of the update.
Once the installation is complete, the application will close.

Running the update script

To start downloading an application update, use the StartUpdateFlow method.

info

The FURuStoreAppUpdateInfo object becomes invalid after a single use. To call the StartUpdateFlow method again, request FURuStoreAppUpdateInfo again using the GetAppUpdateInfo method.

See the Checking for updates section.

Each StartUpdateFlow request returns requestId, that is unique within a single application run. Each event returns requestId of the request that triggered the event.

Method call StartUpdateFlow
EURuStoreAppUpdateOptions appUpdateOptions = EURuStoreAppUpdateOptions::DELAYED;
long requestId = StartUpdateFlow(
    appUpdateOptions,
    [](long requestId, EURuStoreUpdateFlowResult response) {
        // Process response
    },
    [](long requestId, TSharedPtr<FURuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    }
);

appUpdateOptions - type of update procedure:
- DELAYED - delayed update. The user will be shown a dialog with the RuStore UI to confirm downloading the update.
- SILENT - silent update. The update will be downloaded in the background.
- IMMEDIATE - forced update. Application use will be blocked until the update is installed.

The Success callback notification returns the EURuStoreUpdateFlowResult value in the Response parameter:

EURuStoreUpdateFlowResult::RESULT_OK - the user confirmed downloading the update.
EURuStoreUpdateFlowResult::RESULT_CANCELED - the user refused to download the update.

The Failure callback notification returns a FURuStoreError structure with information about the error in the Error parameter. The structure of the FURuStoreError error is described in the Error Handling section.

After calling the StartUpdateFlow method, the update download status can be monitored in the OnStateUpdatedInstanceEvent event.

After receiving the EURuStoreInstallStatus::DOWNLOADED status in the installStatus field of the FURuStoreInstallState object, the update installation method must be called.

Forced update

Description of the forced update scenario

Update with UI from RuStore

The user will be shown a full-screen dialog with the RuStore UI to confirm the update. Application use will be blocked until the update is installed.
When you click the Update button, a dialog box will appear to confirm the installation of the update.
Next, when you click on the Install button, a full-screen dialog about installing a new version of the application will appear.
Once the installation is complete, the application will restart.

caution

The application will be restarted if the Rustore version is greater than or equal to 1.37. If the version of Rustore is lower, the application will close to install the update and will not be reopened when the update is completed.

Run update script

After receiving FURuStoreAppUpdateInfo you can check whether a force update is available.

Вызов метода CheckIsImmediateUpdateAllowed
bool bIsAvailable = URuStoreAppUpdateManager::Instance()->CheckIsImmediateUpdateAllowed();

The result of the CheckIsImmediateUpdateAllowed method is recommended to be used to decide whether to run a forced update, but this result does not affect the ability to run the script. The need to run the update script may occur according to your internal logic.

To start downloading an application update, use the StartUpdateFlow method.

info

The FURuStoreAppUpdateInfo object becomes invalid after a single use. To call the StartUpdateFlow method again, request FURuStoreAppUpdateInfo again using the GetAppUpdateInfo method.

See the Checking for updates section.

Each StartUpdateFlow request returns requestId, that is unique within a single application run. Each event returns requestId of the request that triggered the event.

Method call StartUpdateFlow
EURuStoreAppUpdateOptions appUpdateOptions = EURuStoreAppUpdateOptions::IMMEDIATE;
long requestId = StartUpdateFlow(
    appUpdateOptions,
    [](long requestId, EURuStoreUpdateFlowResult response) {
        // Process response
    },
    [](long requestId, TSharedPtr<FURuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    }
);

appUpdateOptions - type of update procedure:
- DELAYED - delayed update. The user will be shown a dialog with the RuStore UI to confirm downloading the update.
- SILENT - silent update. The update will be downloaded in the background.
- IMMEDIATE - forced update. Application use will be blocked until the update is installed.

The Success callback notification returns the EURuStoreUpdateFlowResult value in the Response parameter:

EURuStoreUpdateFlowResult::RESULT_OK - the update is completed, the code may not be received because the application is terminated at the time of the update.
EURuStoreUpdateFlowResult::RESULT_CANCELED - the flow was interrupted by the user or an error occurred. When you receive this code, you are expected to exit the application.
EURuStoreUpdateFlowResult::ACTIVITY_NOT_FOUND - RuStore is not installed, or a version is installed that does not support forced updating (RuStore versionCode < 191).

If the update is successful, no further action is required.

Silent update

Description of silent update scenario

Update without UI from RuStore

The user will be shown a dialog box to confirm the installation of the update (the update will be downloaded in the background).
Once the installation is complete, the application will close.

Running the update script

To start downloading an application update, use the StartUpdateFlow method.

info

The FURuStoreAppUpdateInfo object becomes invalid after a single use. To call the StartUpdateFlow method again, request FURuStoreAppUpdateInfo again using the GetAppUpdateInfo method.

See the Checking for updates section.

Each StartUpdateFlow request returns requestId, that is unique within a single application run. Each event returns requestId of the request that triggered the event.

Method call StartUpdateFlow
EURuStoreAppUpdateOptions appUpdateOptions = EURuStoreAppUpdateOptions::SILENT;
long requestId = StartUpdateFlow(
    appUpdateOptions,
    [](long requestId, EURuStoreUpdateFlowResult response) {
        // Process response
    },
    [](long requestId, TSharedPtr<FURuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    }
);

appUpdateOptions - type of update procedure:
- DELAYED - delayed update. The user will be shown a dialog with the RuStore UI to confirm downloading the update.
- SILENT - silent update. The update will be downloaded in the background.
- IMMEDIATE - forced update. Application use will be blocked until the update is installed.

The Success callback notification returns the EURuStoreUpdateFlowResult value in the Response parameter:

EURuStoreUpdateFlowResult::RESULT_OK - the update download task has been registered.

After calling the StartUpdateFlow method, the update download status can be monitored in the OnStateUpdatedInstanceEvent event.

After receiving the EURuStoreInstallStatus::DOWNLOADED status in the installStatus field of the FURuStoreInstallState object, the update installation method must be called.

tip

For a silent update, it is recommended to implement your own interface.

Update installation

tip

It is recommended to notify the user that the update is ready for installation.

To start the update installation, use the CompleteUpdate method. The update occurs through the native Android tool. If the update is successful, the application will close.

Method call CompleteUpdate
requestId = CompleteUpdate(
    [](long requestId, TSharedPtr<FURuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    }
);

Errors processing

tip

It is not recommended to display the error to the user yourself if you get onFailure in response. It can negatively affect the user experience.

Структура FURuStoreError
USTRUCT(BlueprintType)
struct RUSTORECORE_API FURuStoreError
{
	GENERATED_USTRUCT_BODY()

	FURuStoreError()
	{
		name = "";
		description = "";
	}

	UPROPERTY(BlueprintReadOnly)
	FString name;

	UPROPERTY(BlueprintReadOnly)
	FString description;
};

name - simpleName of the error class.
description — description of the error.

Possible errors

RuStoreNotInstalledException — RuStore is not installed on the user's device;
RuStoreOutdatedException — RuStore version installed on the user's device does not support this SDK;
RuStoreUserUnauthorizedException — user is not authorized in RuStore;
RuStoreException — basic RuStore error from which other errors are inherited;
RuStoreInstallException(public val code: Int) — download and installation error.
- ERROR_UNKNOWN(Int = 4001) — unknown error.
- ERROR_DOWNLOAD(Int = 4002) — error while downloading.
- ERROR_BLOCKED(Int = 4003) — installation blocked by system.
- ERROR_INVALID_APK(Int = 4004) — invalid update APK.
- ERROR_CONFLICT(Int = 4005) — conflict with the current app version.
- ERROR_STORAGE(Int = 4006) — insufficient device storage.
- ERROR_INCOMPATIBLE(Int = 4007) — incompatible with device.
- ERROR_APP_NOT_OWNED(Int = 4008) — application not purchased.
- ERROR_INTERNAL_ERROR(Int = 4009) — internal error.
- ERROR_ABORTED(Int = 4010) — user refused to install the update.
- ERROR_APK_NOT_FOUND(Int = 4011) — APK for installation not found.
- ERROR_EXTERNAL_SOURCE_DENIED(Int = 4012) — update prohibited. For example, the first method responses that an update is not available, but the user calls the second method.
- ERROR_ACTIVITY_SEND_INTENT(Int = 9901) — error while sending intent for opening an activity.
- ERROR_ACTIVITY_UNKNOWN(Int = 9902) — unknown error on activity opening.

General​

User scenario example​

Prerequisites​

Connecting to the project​

Create update manager​

Initialization​

Initialization check​

Check for updates​

Download and install updates​

Using listener​

Listener interface​

Check update status​

Delete listener​

Start downloading update​

Delayed update​

Forced update​

Silent update​

Update installation​

Errors processing​

Possible errors​

General

User scenario example

Prerequisites

Connecting to the project

Create update manager

Initialization

Initialization check

Check for updates

Download and install updates

Using listener

Listener interface

Check update status

Delete listener

Start downloading update

Delayed update

Forced update

Silent update

Update installation

Errors processing

Possible errors