XGameSaveInitializeProviderAsync

發行項
03/16/2023

Provides and initializes an XGameSave Provider handle asynchronously.

Syntax

HRESULT XGameSaveInitializeProviderAsync(  
         XUserHandle requestingUser,  
         const char* configurationId,  
         bool syncOnDemand,  
         XAsyncBlock* async  
)

Parameters

requestingUser _In_
Type: XUserHandle

Handle to an Xbox Live User.

configurationId _In_z_
Type: char*

Service configuration ID (SCID).

syncOnDemand _In_
Type: bool

When true syncOnDemand only downloads data from the service if needed. Does not work if device is offline. Setting to true may cause sync progress UI to be shown.

async _In_
Type: XAsyncBlock*

Contains the information for the Async call. This includes calling context and a call to the XGameSaveInitializeProviderResult function.

Return value

Type: HRESULT

Function result.

Remarks

This function must be called successfully before other XGameSave APIs are used.

Note

The XGameSave API requires your title to have its title ID and service configuration ID (SCID) properly configured in order to work. For more information about these required IDs, see Setting Up Sandboxes for Xbox Live Development. Your game must be enabled for Xbox Live in Partner Center.

If you do not configure your SCID and Title ID properly, your XSaveGame API calls will fail with the following error code:

E_GS_NO_ACCESS - 0x80830002 - The operation failed because the title does not have access to the container storage spaces.

The resulting XGameSaveProviderHandle is obtained from the XGameSaveInitializeProviderResult function. This is the handle you will use to access your XGameSaveProvider.

When this API is called with syncOnDemand set to true it behaves the same from a caller perspective but it does cause some behavior differences in the rest of the API. The SyncOnDemand XGameSaveProvider will only download data from the service if needed but this also comes with the drawback that any container operation might be delayed in this case and this delay may cause some UX to be shown to the user for the sync progress. Using any of the following methods can force a sync:

Another drawback would be that if the device is offline or has connectivity issues then accessing the container is impossible.

##Example

// ASYNC Init - can be kicked off from a time sensitive thread 
//              work and callback will happen from platform provided threads 
void Sample::_InitializeAsync() 
{ 
    HRESULT hr; 
  
    struct InitContext 
    { 
        Sample* self; 
        XAsyncBlock async; 
    }; 
  
    InitContext* ctx = new InitContext{}; 
    if (ctx) 
    { 
        ctx->self = this; 
        ctx->async.context = ctx; 
        ctx->async.callback = [](XAsyncBlock* async) 
        { 
            auto ctx = reinterpret_cast<InitContext*>(async->context); 
            auto self = ctx->self; 
            XGameSaveProviderHandle provider = nullptr; 
            HRESULT hr = XGameSaveInitializeProviderResult(async, &provider); 
            if (SUCCEEDED(hr)) 
            { 
                self->_provider = provider; 
            } 
            else 
            { 
                self->_HandleInitializeErrors(self->_xalUser, hr); 
            } 
            delete ctx; 
        }; 
    } 
    else 
    { 
        hr = E_OUTOFMEMORY; 
    } 
  
    if (SUCCEEDED(hr)) 
    { 
        hr = XGameSaveInitializeProviderAsync(this->_xalUser, "SERVICE_CONFIG_ID-DEADBEEF0123", false, &ctx->async); 
    } 
    if (FAILED(hr)) 
    { 
        // if we didn't setup the async we need to cleanup our tracking context 
        delete ctx; 
        _HandleInitializeErrors(this->_xalUser, hr); 
    } 
}

Games cannot mix the usage of XGameSaveFiles with the usage of XGameSave. Games much choose which cloud save system they want to use. If the game is using XGameSaveFiles and later calls XGameSaveInitializeProvider, it will error out with E_GS_PROVIDER_MISMATCH. Equally, if the game was using XGameSave and later calls XGameSaveFilesGetFolderWithUiAsync, that will also error out with E_GS_PROVIDER_MISMATCH.

Requirements

Header: XGameSave.h

Library: xgameruntime.lib

Supported platforms: Windows, Xbox One family consoles and Xbox Series consoles

共用方式為