I want to let the user to either create new match or join existing matches which are created using create new match, all to be done programmatically. My question is how can I force game center to only create a new match ? The code which apple provided in their document is:
-(IBAction)findProgrammaticMatch:(id)sender {
GKMatchRequest *request = [[GKMatchRequest alloc] init];
request.minPlayers = 2;
request.maxPlayers = 2;
[GKTurnBasedMatch findMatchForRequest:request withCompletionHandler:^(GKTurnBasedMatch *match,NSError *error) {
if (match)
// load gameplay
}];
}
this code will create a new match if and only if there is no existing match, otherwise it will make auto-match.
Use playerAttributes property on the GKMatchRequest:
GKMatchRequest *request = [[GKMatchRequest alloc] init];
request.minPlayers = 2;
request.maxPlayers = 2;
if (wantsNewGame)
request.playerAttribute = 0x0000FFFF;
else if (wantsJoin)
request.playerAttribute = 0xFFFF0000;
else // don't care
request.playerAttribute = 0xFFFFFFFF;
GKTurnBasedMatchmakerViewController *vc = [[GKTurnBasedMatchmakerViewController alloc] initWithMatchRequest:request];
Related
I am trying to delete the value of some Attributes in two linked Entities. Here is the code I am using:
+ (MeetPhoto *)deletePhotoForSelectedMeet:(MarksFromMeets *)specificMeet
inManagedObjectContext:(NSManagedObjectContext *)context;
{
MeetPhoto *results = nil;
NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:#"MarksFromMeets"];
request.predicate = [NSPredicate predicateWithFormat:#"uniqueResultID = %#", specificMeet.uniqueResultID];
NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:#"uniqueResultID" ascending:YES];
request.sortDescriptors = [NSArray arrayWithObject:sortDescriptor];
NSError *error = nil;
NSArray *matches = [context executeFetchRequest:request error:&error];
if (!matches || [matches count] > 1) {
NSLog(#"There has been an error in matches in %#: \n%#.\n matches count = %lu",
NSStringFromClass([self class]),
NSStringFromSelector(_cmd),
(unsigned long)[matches count]);
} else if ([matches count] == 0){
NSLog(#"There were no matches in %#: \n%#.\n matches count = %lu",
NSStringFromClass([self class]),
NSStringFromSelector(_cmd),
(unsigned long)[matches count]);
} else {
if (debug == 1) NSLog(#"In %# and matches = %lu",NSStringFromClass([self class]),(unsigned long)[matches count]);
for (MarksFromMeets* meetEntity in matches) {
if (debug == 1) NSLog(#" MarksFromMeet = %# \n thumbnail = %# \n photo = %#",meetEntity.meetName,meetEntity.photoThumbNail,meetEntity.whichPhoto.photo);
[context deleteObject:meetEntity.photoThumbNail];
[context deleteObject:meetEntity.whichPhoto.photo];
NSError *mySavingError = nil;
[meetEntity.managedObjectContext save:&mySavingError];
if (mySavingError) NSLog(#"In %# and mySavingError is %#",NSStringFromClass([self class]), mySavingError);
}
}
return results;
}
Where whichPhoto is the title of the link between the two Core Data Entities.
Here is NSLog Statement:
2014-08-13 14:40:45.334 ITrackXC[12054:60b] thisMeetsPhoto should equal nil and equals (null)
2014-08-13 14:41:37.095 ITrackXC[12054:60b] In MeetPhotoViewController and executing imagePickerController:didFinishPickingImage:editingInfo:
2014-08-13 14:41:37.583 ITrackXC[12054:60b] In MeetPhoto and matches = 1
2014-08-13 14:41:37.589 ITrackXC[12054:60b] whichMeetPhotographed = <MarksFromMeets: 0x1700c5be0> (entity: MarksFromMeets; id: 0xd000000000300004 <x-coredata://ED56838C-9F27-451D-97CA-01AF0FC38830/MarksFromMeets/p12> ; data: {
athleteGrade = "12th Grade";
event = "5000 Meters";
eventPR = 1;
eventSB = 1;
markInEvent = "19:03";
meetDate = "2013-11-02 07:00:00 +0000";
meetID = 78103;
meetName = "OSAA 3A/2A/1A State Championships";
photoThumbNail = "<UIImage: 0x170281b80>";
placeInEvent = 2;
raceSorter = 5000;
seasonName = 2013;
sortMark = 1143;
standardOrMetric = nil;
uniqueResultID = 10032696;
whichPhoto = "0x178236d80 <x-coredata:///MeetPhoto/t9C5E481D-5911-47C9-AA8B-6015AAD1C23C2>";
whoRan = "0xd000000000080000 <x-coredata://ED56838C-9F27-451D-97CA-01AF0FC38830/AthleteInfo/p2>";
})
photo = <UIImage: 0x17009b440>
thumbnail = <UIImage: 0x170281b80>
2014-08-13 14:41:37.599 ITrackXC[12054:60b] NSManagedObjects did change.
2014-08-13 14:41:39.444 ITrackXC[12054:60b] NSManagedContext did save.
I do not get any errors. However when I look at the TableView where the data is displayed, the photos are still part of the record.
I can get rid of the thumbnail and associated photo by setting them to "nil". Is there any problem with this approach?
Setting attribute values to nil is how you're supposed to do this, so no, there's no problem with it. The deleteObject: method is only for when you want to delete a managed object. Using it in other cases might not crash, but it also won't have the effect you're aiming for.
In the case of the photo, you might need to delete an object, but it's hard to tell from your code. You seem to want to get rid of meetEntity.whichPhoto.photo. I don't know what whichPhoto is; if it's a managed object, you might want to call deleteObject on myEntity.whichPhoto to get rid of it. If nobody else is using it, that is.
how does my fetchedResultsController method look like, if I want to fetch all my attributes for an entity from core data? I only know and understand how to fetch data for a tableView and I think that is where all my confusion is coming from.
Here is my Core-Data setup:
I'm trying to fill an array with all the Attributes my Setting entity has and the show those values via NSLog output in my debug console.
Here is what I changed so far:
AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
NSManagedObjectContext *context = [appDelegate managedObjectContext];
NSManagedObject *newEntry = [NSEntityDescription insertNewObjectForEntityForName:#"Setting" inManagedObjectContext:context];
//NSManagedObject *newSetting = [NSEntityDescription insertNewObjectForEntityForName:#"Setting" inManagedObjectContext:context];
[newEntry setValue: #"StudiSoft" forKey:#"settingName"];
if (_overrideSysTimeSwitch.on) {
[newEntry setValue: #YES forKey:#"settingSysTimeOverride"];
//editSetting.settingSysTimeOverride = #YES;
NSLog(#"IF A");
} else {
//[newEntry setValue: #NO forKey:#"settingSysTimeOverride"];
//editSetting.settingSysTimeOverride = #NO;
NSLog(#"IF B");
}
if (_timeFormatSwitch.on) {
//[newEntry setValue: #YES forKey:#"settingTimeFormat"];
//editSetting.settingTimeFormat = #YES;
NSLog(#"IF C");
} else {
//[newEntry setValue: #NO forKey:#"settingTimeFormat"];
//editSetting.settingTimeFormat = #NO;
NSLog(#"IF D");
}
[self.settingsArray addObject:#"StudiSoft"];
NSError *error;
[context save:&error];
I'm using this code-snipped that and I'm able to modify the core data content.
However, every time I run this code, it of course adds a new object.
I've been looking for a way to update existing Attributes in my Entity, or modify them, but I could NOT find them.
Anyhow this is a good step into the right direction.
I created a completely new project, with just one view, once I have it working on the main view I'm going to experiment with segues....
But for now, how would I update or change existing attributes?
Thanks guys!!
This is my editSave Method to store some data in core data:
- (IBAction)editSave:(UIBarButtonItem *)sender
{
if ([_editSaveButton.title isEqualToString:#"Edit"])
{
[self setTitle:#"Edit Settings"];
//self.title = #"Edit Settings";
_overrideSysTimeSwitch.userInteractionEnabled = YES;
_timeFormatSwitch.userInteractionEnabled = YES;
_editSaveButton.title = #"Save";
} else if ([_editSaveButton.title isEqualToString:#"Save"])
{
[self setTitle:#"Settings"];
//self.title = #"Settings";
_overrideSysTimeSwitch.userInteractionEnabled = NO;
_timeFormatSwitch.userInteractionEnabled = NO;
_editSaveButton.title = #"Edit";
// #############################################################
AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
NSManagedObjectContext *context = [appDelegate managedObjectContext];
//NSManagedObject *newEntry = [NSEntityDescription insertNewObjectForEntityForName:#"Setting" inManagedObjectContext:context];
//[newEntry setValue: #"StudiSoft" forKey:#"settingName"];
/*NSString *firstName = [anEmployee firstName];
Employee *manager = anEmployee.manager;
Setting *newSetting = [NSString #"Test"];
[newSetting setValue:#"Stig" forKey:#"settingName"];
[aDepartment setValue:[NSNumber numberWithInteger:100000] forKeyPath:#"manager.salary"];*/
//editSetting.settingName = #"Test";
if (_overrideSysTimeSwitch.on) {
//[newEntry setValue: #YES forKey:#"settingSysTimeOverride"];
editSetting.settingSysTimeOverride = #YES;
NSLog(#"IF A");
} else {
//[newEntry setValue: #NO forKey:#"settingSysTimeOverride"];
editSetting.settingSysTimeOverride = #NO;
NSLog(#"IF B");
}
if (_timeFormatSwitch.on) {
//[newEntry setValue: #YES forKey:#"settingTimeFormat"];
editSetting.settingTimeFormat = #YES;
NSLog(#"IF C");
} else {
//[newEntry setValue: #NO forKey:#"settingTimeFormat"];
editSetting.settingTimeFormat = #NO;
NSLog(#"IF D");
}
//[self.settingsArray addObject:#"StudiSoft"];
NSError *error = nil;
//if ([self.managedObjectContext hasChanges]) {
//NSLog(#"SAVE & DISMISS conetx has changed");
if (![context save:&error]) { // save failed
NSLog(#"Save failed: %#", [error localizedDescription]);
} else { // save succeeded
NSLog(#"Save Succeeded");
}
//}
//[self.tableView reloadData];
// #############################################################
}
}
Debug Output:
2014-06-10 19:09:29.881 SettingsCoreData[508:60b] Entry #5: <Setting: 0x8f983e0> (entity: Setting; id: 0x8f97030 <x-coredata://FA78AB86-3225-4B1E-97DD-3F31F5323A18/Setting/p6> ; data: {
settingName = StudiSoft;
settingSysTimeOverride = 0;
settingTimeFormat = 0;
})
2014-06-10 19:09:29.883 SettingsCoreData[508:60b] Entry #6: <Setting: 0x8f98430> (entity: Setting; id: 0x8f97040 <x-coredata://FA78AB86-3225-4B1E-97DD-3F31F5323A18/Setting/p7> ; data: {
settingName = StudiSoft;
settingSysTimeOverride = 1;
settingTimeFormat = 1;
})
Now I should be able to use something like this in my viewDidLoad, right?
if (editSetting.settingSysTimeOverride.boolValue == 0) {
_overrideSysTimeSwitch.on = NO;
} else {
_overrideSysTimeSwitch.on = YES;
}
But it doesn't work as I thought it will :-(
Next you need to call -performFetch: on the NSFetchedResultsController. Make sure you check the response and handle the error if the response is NO.
From there your NSFetchedResultsController is populated and ready to be used. You can then grab individual elements via -objectAtIndex: or you can grab them all with -fetchedObjects.
I would suggest just reviewing the documentation on the methods that are available as it has pretty strong and clear documentation.
Update
If you are not receiving any data then break it down. Take the NSFetchRequest that you created and call -executeFetchRequest:error: against your NSManagedObjectContext and see if you get any data back.
If you do then there is something wrong with your handling of the NSFetchedResultsController.
If you don't then there is something wrong with your NSFetchRequest or you don't have any data in your store.
Update
Sounds like you need to read a book on how Core Data works.
A NSFetchRequest is a query against Core Data so that objects can be returned from the store. You can pass a NSFetchRequest to a NSFetchedResultsController so that the NSFetchedResultsController can monitor the store for changes and let your view controller know when those changes occur.
A NSFetchRequest can also be executed directly against the NSManagedObjectContext and you can retrieve the results directly. You do that by calling -executeFetchRequest:error: against your NSManagedObjectContext and getting a NSArray back. You can then check that NSArray to see if you get any results.
If you do not understand that paragraph then you need to take a step back and read the tutorials on Core Data and/or read a book on Core Data. I can recommend an excellent book on the subject ;-)
This one has been a big problem for me, and i´m still stuck with it so i was hopping that someone could give me some kind of guidance.
What i have is:
3 tableviews with multiple cells and each cell with several textfields.
1 tableview that appears inside a popover every time a specific textfield on those cells is pressed. This tableview has all!! the core data methods to retrieve the necessary data from my database.
Everything works ok...but i need to distinguish what kind of data shall appear in tableview 1 or 2 or 3...So i know i have to use predicate!.
What i have done: ( and i have tried other things)
- (NSFetchedResultsController *)fetchedResultsController
{
if (_fetchedResultsController == nil)
{
NSFetchRequest *fetchRequestList = [[NSFetchRequest alloc] init];
NSEntityDescription *entityList = [NSEntityDescription entityForName:#"List" inManagedObjectContext:self.managedObjectContext];
[fetchRequestLista setEntity:entityList];
TableViewOne *table1 = [[Cobertura alloc]init];
TableViewTwo *table2 = [[Cobertura alloc]init];
if (table1 textFieldShouldBeginEditing:table1.textFieldPressed)
{
fetchRequestList.predicate = [NSPredicate predicateWithFormat:#"%K IN %#", #"reference", arrayTableview1];
}
if (table2 textFieldShouldBeginEditing:table2.textFieldPressed)
{
fetchRequestList.predicate = [NSPredicate predicateWithFormat:#"%K IN %#", #"reference", arrayTableview2];
}
NSSortDescriptor *cellTitle = [[NSSortDescriptor alloc] initWithKey:#"reference" ascending:YES];
NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:cellTitle, nil];
[fetchRequestLista setSortDescriptors:sortDescriptors];
_fetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequestLista managedObjectContext:self.managedObjectContext sectionNameKeyPath:#"referencia" cacheName:nil];
_fetchedResultsController.delegate = self;
self.fetchedResultsController = _fetchedResultsController;
return _fetchedResultsController;
}
In each of my tableviews, i have an instance of the "popoverTableview" in my method textFieldShouldBeginEditing:
popoverTableview = [self.storyboard instantiateViewControllerWithIdentifier:#"popoverTableview"];
popover = [[UIPopoverController alloc] initWithContentViewController:popoverTableview];
[popover presentPopoverFromRect:textField.bounds inView:textField permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
popoverTableview.delegate = self;
popoverTableview.popView = self.popover;
So, if i´m in tableview1 i need to get [NSPredicate predicateWithFormat:#"%K IN %#", #"reference", arrayTableview1];
Should i be creating some kind of method that my tableviewS could access? What am i forgetting here or not paying attention?
Thanks in advance, and any kind of advise would be welcome!
Regards
For everyone that was experiencing the same problem that i was, here is what i have done to resolve:
This is when i´m creating the popoverview when a specific textfield is pressed:
popoverTableview = [self.storyboard instantiateViewControllerWithIdentifier:#"popoverTableview"]initWithTextFieldTag:myTextFieldThatWasPressed.tag]
popover = [[UIPopoverController alloc] initWithContentViewController:popoverTableview];
[popover presentPopoverFromRect:textField.bounds inView:textField permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
popoverTableview.delegate = self;
popoverTableview.popView = self.popover;
popoverTableview.aIntVariable = myTextFieldThatWasPressed;
then in my popovertableview:
- (id)initWithTextFieldTag:(int)textFieldTag
{
self.aIntVariable = textFieldTag;
return self;
}
Then in the fetchedResultsController method, you´ll just have to create simple if´s telling wich predicate you want...
Regards
If the fetched results controller is for the popover table and you need to know in which table the text field was selected, I'd recommend tagging each of the text fields when you create them and creating an int _currentTable instance variable. That way, when your textFieldShouldBeginEditing: method is called, you can set the ivar's value with the tag and check that tag when creating the fetched results controller for the popover table.
So, instead of
if (table1 textFieldShouldBeginEditing:table1.textFieldPressed)
{
fetchRequestList.predicate = [NSPredicate predicateWithFormat:#"%K IN %#", #"reference", arrayTableview1];
}
if (table2 textFieldShouldBeginEditing:table2.textFieldPressed)
{
fetchRequestList.predicate = [NSPredicate predicateWithFormat:#"%K IN %#", #"reference", arrayTableview2];
}
you'll have
if (_currentTable == 1) {
fetchRequestList.predicate = // table one predicate
} else if (_currentTable == 2) {
fetchRequestList.predicate = // table two predicate
}
UPDATE:
This is how I would override the init from code. In your popover table view controller implementation:
- (id)initWithTableTag:(int)tableTag
{
self = [super init];
if (self) {
_currentTable = tableTag;
}
return self;
}
(Make sure you also declare - (id)initWithTableTag:(int)tableTag; in your header.) Then, when you create and present the popover controller (which I'm assuming you're doing in the textFieldShouldBeginEditing: delegate call):
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
// ...
YourPopoverTableViewControllerClass *vc = [[YourPopoverTableViewControllerClass alloc] initWithTableTag:textField.tag];
// ...
// display the popover
return YES;
}
Unfortunately, I don't know how to do this using storyboards.
I am experiencing problems with how I handle my Core Data NSManagedObjectContext.
I can create NSManagedObject in my NSManagedObjectContext, but I failed to save the value.
Here's what I got:
_lesson.title = _titleField.text;
int priority = [_priorityField.text intValue];
int difficulty = [_difficultyField.text intValue];
int time = [_timeField.text intValue];
int sortIndex = 0;
if ( time == 0 )
{
sortIndex = 101;
}
else
{
sortIndex = priority * ( difficulty / time );
}
_lesson.priority = [NSNumber numberWithInt:priority];
_lesson.difficulty = [NSNumber numberWithInt:difficulty];
_lesson.time = [NSNumber numberWithInt:time];
_lesson.sortIndex = [NSNumber numberWithInt:sortIndex];
NSError* error = nil;
[[(AppDelegate*)[[UIApplication sharedApplication] delegate] managedObjectContext] save:&error];
Everything before the saving is working perfectly, I used NSLog to verify if each value is really saved in _lesson.
And _lesson is sent from here:
if ( [[segue identifier] isEqualToString:#"addLesson"] )
{
LessonViewController* destination = [[LessonViewController alloc]init];
Lesson* lesson = (Lesson*)[NSEntityDescription insertNewObjectForEntityForName:#"Lesson" inManagedObjectContext:_managedObjectContext];
destination.lesson = lesson;
}
else if ( [[segue identifier] isEqualToString:#"editLesson"] )
{
LessonViewController* destination = [[LessonViewController alloc]init];
NSIndexPath* index = [_tableView indexPathForCell:(UITableViewCell*)sender];
[_managedObjectContext deleteObject:[_lessonArray objectAtIndex:index.row]];
Lesson* lesson = (Lesson*)[_lessonArray objectAtIndex:index.row];
destination.lesson = lesson;
}
After debugging for two hours, I cannot find my error. Please help!
I will include my full code below:
https://www.dropbox.com/sh/eu62ie9svbbqdmm/u1hYUICfjy
That is my full source code. (I copied and pasted and created a mess. So, Dropbox!)
Thanks in advance.
This line looks suspicious:
[_managedObjectContext deleteObject:[_lessonArray objectAtIndex:index.row]];
You delete the Lesson object before passing it to the LessonViewController, so that saving the context will delete that object from the store, and not save a (modified) object, as you probably intended.
It seems to me that you should just delete that line in your code.
ADDED: There is an error in your prepareForSegue method: You create a new view controller with
LessonViewController* destination = [[LessonViewController alloc]init];
Instead, you must use the destination view controller of the seque:
LessonViewController *destination = [segue destinationViewController];
I've been struggling with adding assets from the iPhone Photo Library to a AVMutableComposition and then export them. Here is what I got:
Finding the assets: (here I grab the AVURLAsset)
-(void) findAssets {
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
// Enumerate just the photos and videos group by using ALAssetsGroupSavedPhotos.
[library enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos usingBlock:^(ALAssetsGroup *group, BOOL *stop) {
// Within the group enumeration block, filter to enumerate just videos.
[group setAssetsFilter:[ALAssetsFilter allVideos]];
[group enumerateAssetsUsingBlock:^(ALAsset *alAsset, NSUInteger index, BOOL *innerStop){
// The end of the enumeration is signaled by asset == nil.
if (alAsset) {
ALAssetRepresentation *representation = [alAsset defaultRepresentation];
NSURL *url = [representation url];
AVURLAsset *avAsset = [AVURLAsset URLAssetWithURL:url options:nil];
// Do something interesting with the AV asset.
[thumbs addObject:alAsset];
[assets addObject:avAsset];
}else if(alAsset == nil){
[self createScroll];
}
}];
}
failureBlock: ^(NSError *error) {
// Typically you should handle an error more gracefully than this.
NSLog(#"No groups");
}];
[library release];
}
Here I add a asset to my composition (I use the first object in the array for testing only.
-(void) addToCompositionWithAsset:(AVURLAsset*)_asset{
NSError *editError = nil;
composition = [AVMutableComposition composition];
AVURLAsset* sourceAsset = [assets objectAtIndex:0];
Float64 inSeconds = 1.0;
Float64 outSeconds = 2.0;
// calculate time
CMTime inTime = CMTimeMakeWithSeconds(inSeconds, 600);
CMTime outTime = CMTimeMakeWithSeconds(outSeconds, 600);
CMTime duration = CMTimeSubtract(outTime, inTime);
CMTimeRange editRange = CMTimeRangeMake(inTime, duration);
[composition insertTimeRange:editRange ofAsset:sourceAsset atTime:composition.duration error:&editError];
if (!editError) {
CMTimeGetSeconds (composition.duration);
}
}
And finally I export the comp and here it crashes
-(void)exportComposition {
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:composition presetName:AVAssetExportPresetPassthrough];
NSLog (#"can export: %#", exportSession.supportedFileTypes);
NSArray *dirs = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectoryPath = [dirs objectAtIndex:0];
NSString *exportPath = [documentsDirectoryPath stringByAppendingPathComponent:EXPORT_NAME];
[[NSFileManager defaultManager] removeItemAtPath:exportPath error:nil];
NSURL *exportURL = [NSURL fileURLWithPath:exportPath];
exportSession.outputURL = exportURL;
exportSession.outputFileType = AVFileTypeQuickTimeMovie;//#"com.apple.quicktime-movie";
[exportSession exportAsynchronouslyWithCompletionHandler:^{
NSLog (#"i is in your block, exportin. status is %d",
exportSession.status);
switch (exportSession.status) {
case AVAssetExportSessionStatusFailed:
case AVAssetExportSessionStatusCompleted: {
[self performSelectorOnMainThread:#selector (exportDone:)
withObject:nil
waitUntilDone:NO];
break;
}
};
}];
}
Does anyone have an idea of what it might be? It crashes on
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:composition presetName:AVAssetExportPresetPassthrough];
And I tried different presets and outputFileTypes.
Thanks
* SOLVED *
I have to answer my own question now when I have solved. It's amazing that I've been struggling with this for a whole day and then I fix it right after posting a question :)
I changed and moved:
composition = [AVMutableComposition
composition];
to:
composition = [[AVMutableComposition
alloc] init];
I think I was too tired when I was working on this yesterday. Thanks guys!