I am integrating On Demand Resources into my Unity game. The resources install without any problems if the internet connection is stable: all resources are installed. While testing various scenarios without an internet connection, I encountered the following problem: if I turn off the internet during installation, I don't get any error messages, but if I turn the internet back on, the download no longer continues (and I still don't get an error). If I reopen the application with a stable internet connection, the download will always be at 0%. Please tell me what I am doing wrong.
#import "Foundation/Foundation.h"
#if ENABLE_IOS_ON_DEMAND_RESOURCES
#import "Foundation/NSBundle.h"
#endif
#include <string.h>
struct CustomOnDemandResourcesRequestData;
typedef void (*CustomOnDemandResourcesRequestCompleteHandler)(struct CustomOnDemandResourcesRequestData* handler, const char* error);
#if ENABLE_IOS_ON_DEMAND_RESOURCES
struct CustomOnDemandResourcesRequestData
{
NSBundleResourceRequest* request;
};
extern "C" CustomOnDemandResourcesRequestData* CustomOnDemandResourcesCreateRequest(const char* const* tags, int tagCount, CustomOnDemandResourcesRequestCompleteHandler handler)
{
NSMutableArray* tagArray = [NSMutableArray array];
for (int i = 0; i < tagCount; i++) {
const char* tag = tags[i];
if (tag != NULL) {
[tagArray addObject:[NSString stringWithUTF8String:tag]];
}
}
NSSet* tagSet = [NSSet setWithArray:tagArray];
CustomOnDemandResourcesRequestData* data = new CustomOnDemandResourcesRequestData();
data->request = [[NSBundleResourceRequest alloc] initWithTags:tagSet];
[data->request beginAccessingResourcesWithCompletionHandler:^(NSError* error) {
dispatch_async(dispatch_get_main_queue(), ^{
const char* errorMessage = error ? [[error localizedDescription] UTF8String] : NULL;
handler(data, errorMessage);
});
}];
return data;
}
extern "C" void CustomOnDemandResourcesRelease(CustomOnDemandResourcesRequestData* data)
{
[data->request endAccessingResources];
delete data;
}
extern "C" float CustomOnDemandResourcesGetProgress(CustomOnDemandResourcesRequestData* data)
{
return data->request.progress.fractionCompleted;
}
extern "C" float CustomOnDemandResourcesGetLoadingPriority(CustomOnDemandResourcesRequestData* data)
{
float priority = (float)data->request.loadingPriority;
return priority;
}
extern "C" void CustomOnDemandResourcesSetLoadingPriority(CustomOnDemandResourcesRequestData* data, float priority)
{
if (priority < 0.0f)
priority = 0.0f;
if (priority > 1.0f)
data->request.loadingPriority = NSBundleResourceRequestLoadingPriorityUrgent;
else
data->request.loadingPriority = (double)priority;
}
extern "C" const char* CustomOnDemandResourcesGetResourcePath(CustomOnDemandResourcesRequestData * data, const char* resource)
{
NSString* resourceStr = [NSString stringWithUTF8String: resource];
NSString* path = [[data->request bundle] pathForResource: resourceStr ofType: nil];
if (path == nil) {
return NULL; // или другое значение по умолчанию
}
const char* result = strdup([path UTF8String]); // копируем строку
return result; // в C# нужно будет освободить память
}
extern "C" void CustomOnDemandResourcesFreeString(const char* str) {
free((void*)str);
}
#else // ENABLE_IOS_ON_DEMAND_RESOURCES
struct CustomOnDemandResourcesRequestData
{
};
extern "C" CustomOnDemandResourcesRequestData* CustomOnDemandResourcesCreateRequest(const char* const* tags, int tagCount, CustomOnDemandResourcesRequestCompleteHandler handler)
{
CustomOnDemandResourcesRequestData* data = new CustomOnDemandResourcesRequestData();
if (handler)
handler(handlerData, NULL);
return data;
}
extern "C" void CustomOnDemandResourcesRelease(CustomOnDemandResourcesRequestData* data)
{
delete data;
}
extern "C" float CustomOnDemandResourcesGetProgress(CustomOnDemandResourcesRequestData* data)
{
return 0.0f;
}
extern "C" float CustomOnDemandResourcesGetLoadingPriority(CustomOnDemandResourcesRequestData* data)
{
return 0.0f;
}
extern "C" void CustomOnDemandResourcesSetLoadingPriority(CustomOnDemandResourcesRequestData* data, float priority)
{
}
extern "C" const char* CustomOnDemandResourcesGetResourcePath(CustomOnDemandResourcesRequestData * data, const char* resource)
{
return NULL;
}
extern "C" void CustomOnDemandResourcesFreeString(const char* str) {
}
#endif // ENABLE_IOS_ON_DEMAND_RESOURCES
