I'm making a game in which the user must complete a task as quickly as possible, and I would like to display the user's best time and update the best time when he or she achieves a new one. I have:
float BestTimeValue
float starttime
-(void)start{
starttime += 0.001;
timelabel.text = [NSString stringWithFormat:#"%.3f", starttime];
}
if (starttime < BestTimeValue) {
[[NSUserDefaults standardUserDefaults] setObject:starttime forKey:[#"BestTimeValue"];
}
and in my viewdidload:
BestTimeValue = [[NSUserDefaults standardUserDefaults] objectForKey:#"BestTimeSaved"];
starttime stops when the game is over, but the value won't display in the label. Thanks!
You can't use a float with the setObject:forKey: and objectForKey: methods.
Use setFloat:forKey: and floatForKey:.
if (starttime < BestTimeValue) {
[[NSUserDefaults standardUserDefaults] setFloat:starttime forKey:[#"BestTimeValue"];
}
BestTimeValue = [[NSUserDefaults standardUserDefaults] floatForKey:#"BestTimeSaved"];
[[NSUserDefaults standardUserDefaults] setObject: forKey:] As the name says, it only accept object like NSString, NSNumber, NSDictionary, etc.
So you have to use other method [[NSUserDefaults standardUserDefaults] setFloat: forKey] or save the float in a NSNumber to use the setObjet Method [NSNumber numberWithFloat:thefloat];
Related
I would like to know how can I send a Float value in a UIlabel in Today extension ?
I try this code:
NSUserDefaults *sharedDefaults = [[NSUserDefaults standardUserDefaults] initWithSuiteName:#"group.mywidget"];
myfloat = [[sharedDefaults objectForKey:#"float_widget"]floatValue];
[sharedDefaults synchronize];
And to receive the value i use this code:
NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:#"group.mywidget"];
NSInteger number = [defaults floatForKey:#"float_widget"];
self.numberLabel.text = [NSString stringWithFormat:#"%f", (float)number];
Can you help me please ? thanks
Declare defaults
NSUserDefaults *defaults= [[NSUserDefaults alloc] initWithSuiteName:#"group.mywidge"];
Set
[defaults setFloat:50.5 forKey:"thisKey"];
Read
float myfloat = [defaults floatForKey:"thisKey"];
Also you should note that there should be app group named group.mywidge in capabilities of the main app and the extension
I have two methods in my .m file .And i want to access by different values but in my Facebook variable gives nil value but if i use only one line and remove second line of object for key then it work fine for one method .
How i do this which work for my both methods
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[[NSUserDefaults standardUserDefaults] synchronize];
user=[defaults objectForKey:#"userid"];
facebook=[defaults objectForKey:#"FACEBOOKprofile"];
facebook =[defaults objectForKey:#"VLCC"];
if ([facebook isEqualToString:#"VLCCFACEBOOK"])
{
[self FacebookRecord];
}
else if([facebook isEqualToString:#"VLCC"])
{
[self VlccRecord];
}
assume that
Choice-1
// for accessing the both condition in same time
Initially Store the UserDefault value based on your method.
if you are access with facebook , on that time store the string like
[[NSUserDefaults standardUserDefaults] setObject:"VLCCFACEBOOK" forKey:#"FACEBOOKprofile"];
[[NSUserDefaults standardUserDefaults] synchronize];
if you are access with VLCC , on that time store the string like
[[NSUserDefaults standardUserDefaults] setObject:"VLCC" forKey:#"VLCCprofile"];
[[NSUserDefaults standardUserDefaults] synchronize];
and retrieve the both and check like
if ([[[NSUserDefaults standardUserDefaults]
objectForKey:#"FACEBOOKprofile"]isEqualToString:#"VLCCFACEBOOK"])
{
[self FacebookRecord];
}
if([[[NSUserDefaults standardUserDefaults]
objectForKey:#"VLCCprofile"] isEqualToString:#"VLCC"])
{
[self VlccRecord];
}
Choice-2
// for accessing single condition on single time
if you are access with facebook , on that time store the string like
[[NSUserDefaults standardUserDefaults] setObject:"VLCCFACEBOOK" forKey:#"FACEBOOKprofile"];
[[NSUserDefaults standardUserDefaults] synchronize];
if you are access with VLCC , on that time store the string like
[[NSUserDefaults standardUserDefaults] setObject:"VLCC" forKey:#"FACEBOOKprofile"];
[[NSUserDefaults standardUserDefaults] synchronize];
and retrieve the both and check like
if ([[[NSUserDefaults standardUserDefaults]
objectForKey:#"FACEBOOKprofile"]isEqualToString:#"VLCCFACEBOOK"])
{
[self FacebookRecord];
}
else if([[[NSUserDefaults standardUserDefaults]
objectForKey:#"FACEBOOKprofile"] isEqualToString:#"VLCC"])
{
[self VlccRecord];
}
In your code, the [self VlccRecord] method will always get called because you are overwriting the facebook variable.
facebook=[defaults objectForKey:#"FACEBOOKprofile"];
facebook =[defaults objectForKey:#"VLCC"];
If you are looking to append the two strings : Then use the stringbyAppendingString method.
int a = 10;
a = 20;
print >> a; //20
int a = 10;
print1 >> a; //10
a = 20;
print2 >> a; //20
Here,
a = facebook;
print1 = [self FacebookRecord];
print2 = [self VlccRecord];
I believe you'll understand.
I developed a small game , , so I manage something like this , when app lunches for the first time , it save the very first record , then after that it loads and compares the new records with the the first time record . but the problem is when user hit the record it should be saved the new record but it doesn't !!! and saves the first record again ! here is my code :
- (void)manageScores {
NSLog(#"managed");
NSString *tempScore = [NSString stringWithFormat:#"%#",scoreLabel.text];
GO.scoreNumber = [tempScore integerValue];
GO.bestScoreNumber = [tempScore integerValue];
GO.scores.text = [NSString stringWithFormat:#"score:%d",GO.scoreNumber];
GO.bestScore.text = [NSString stringWithFormat:#"best:%d",GO.bestScoreNumber];
if ([[NSUserDefaults standardUserDefaults] boolForKey:#"HasLaunchedOnce"])
{
// app already launched
NSLog(#"app already launched");
[GO loadBestScore];
}
else
{
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:#"HasLaunchedOnce"];
[[NSUserDefaults standardUserDefaults] synchronize];
// This is the first launch ever
NSLog(#"first time lunch ever");
[GO saveBestScore];
}
if (GO.scoreNumber > GO.bestScoreNumber) {
//**************THIS METHOD DOESN'T WORK WHEN USER HIT THE RECORD*********/////
[GO saveBestScore];
//**************//
GO.scores.text = [NSString stringWithFormat:#"score:%d",GO.scoreNumber];
GO.bestScore.text = [NSString stringWithFormat:#"best:%d",GO.scoreNumber];
GO.shareScore.text = [NSString stringWithFormat:#"score:%d",GO.bestScoreNumber];
NSLog(#"new record");
}
if (GO.scoreNumber < GO.bestScoreNumber) {
GO.scores.text = [NSString stringWithFormat:#"score:%d",GO.scoreNumber];
GO.bestScore.text = [NSString stringWithFormat:#"best:%d",GO.bestScoreNumber];
GO.shareScore.text = [NSString stringWithFormat:#"score:%d",GO.bestScoreNumber];
[GO loadBestScore];
NSLog(#"NO NEW RECORD");
}
}
saving and loading scores (methods form GameOver.h/m (GO) )
- (void)saveBestScore {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setInteger:bestScoreNumber forKey:#"highScore"];
[defaults synchronize];
NSLog(#"BEST SCORE SAVED:%i",bestScoreNumber);
}
- (void)loadBestScore {
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
bestScoreNumber = (int)[prefs integerForKey:#"highScore"];
}
Looks like you should save scoreNumber rather than bestScoreNumber
Reason:
The following code wants to save the best score because GO.ScoreNumber > Go.BestScoreNumber.
if (GO.scoreNumber > GO.bestScoreNumber) {
//**************THIS METHOD DOESN'T WORK WHEN USER HIT THE RECORD*********/////
[GO saveBestScore];
//**************//
GO.scores.text = [NSString stringWithFormat:#"score:%d",GO.scoreNumber];
GO.bestScore.text = [NSString stringWithFormat:#"best:%d",GO.scoreNumber];
GO.shareScore.text = [NSString stringWithFormat:#"score:%d",GO.bestScoreNumber];
NSLog(#"new record");
}
But in saveBestScore, it stores bestScoreNumber, which is the previous highest score number.
[defaults setInteger:bestScoreNumber forKey:#"highScore"];
- (void)saveBestScore
This method doesn't take an argument, but it should.
If you're keeping scores as int, you should modify it to look like this:
- (void)saveBestScore:(int)bestScore
Then, on first launch, call saveBestScore with an argument of 0, just to get it initialize. In fact, if you write saveBestScore method correctly, you don't really need to check whether the app has already launched ever.
- (void)saveBestScore:(int)bestScore {
if (bestScore > [[[NSUserDefaults standardUserDefaults]
objectForKey:#"BestScore"] intValue]); {
[[NSUserDefaults standardUserDefaults] setObject:[NSNumber
numberWithInt:bestScore] forKey:#"BestScore"];
}
- (int)loadBestScore {
return [[[NSUserDefaults standardUserDefaults] objectForKey:#"BestScore]
intValue];
}
I've searched but I can't find a good explanation as to why I'm still not getting the right value from my saved Integer.
This is how I saved my event Id.
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
[prefs setInteger:eventSelected.eventId forKey:#"currentEvent"];
This is how I'm trying to retrieve it.
NSLog(#"user dfault %#", [NSNumber numberWithUnsignedInt:[[[NSUserDefaults standardUserDefaults] objectForKey:#"currentEvent"] unsignedIntegerValue]]);
I'm gettin gthis.
user dfault 123581200
Also, to note, event if I did intValue instead of unsignedIntegerValue , it would still give me a random id number. was wondering what I'm doing wrong.
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
// Convert your value to IntegerValue and Save it
[prefs setInteger:[eventSelected.eventId integerValue] forKey:#"currentEvent"];
// Dont forget to synchronize UserDefaults
[prefs synchronize];
// To Access this value
NSLog(#"%d",[prefs integerForKey:#"currentEvent"]);
Instead of this code NSLog(#"user dfault %#", [NSNumber numberWithUnsignedInt:[[[NSUserDefaults standardUserDefaults] objectForKey:#"currentEvent"] unsignedIntegerValue]]);
Use this
NSLog(#"user dfault %#", [[NSUserDefaults standardUserDefaults] integerForKey:#"currentEvent"]);
NSNumber give a pointer value, not integer value.
To retrieve the integer you should use below function:
[[NSUserDefaults standardUserDefaults] integerForKey:#"currentEvent"];
when you ask for objectForKey, it box it first and then return the object. Posting intValue will convert the address of that object into integer. Hence each time you will receive different number.
NSNumber *number;
store:
[[NSUserDefaults standardUserDefaults] setValue:number forKey:#"Number"];
retrieving:
number = [NSNumber numberWithInteger:[[NSUserDefaults standardUserDefaults] integerForKey:#"Number"]];
I use this code to save:
[[NSUserDefaults standardUserDefaults] setValue:#"vruch" forKey:#"nastoikaIP"];
[[NSUserDefaults standardUserDefaults] synchronize];
and this code to load:
NSString* automanual = [[NSUserDefaults standardUserDefaults]
valueForKey:#"nastroikaIP"];
if ([automanual isEqualToString:#"vruch"]) {
autovruch.selectedSegmentIndex = 1;
[self obnovittext];
}
You should not use the method setValue: (from the NSKeyValueCoding protocol) but setObject: (from the NSUserDefaults class) to store the string.
[[NSUserDefaults standardUserDefaults] setObject:#"vruch" forKey:#"nastroikaIP"];
[[NSUserDefaults standardUserDefaults] synchronize];
You can retrieve the string using the method stringForKey:
NSString* automanual = [[NSUserDefaults standardUserDefaults] stringForKey:#"nastroikaIP"];
Finally, note that it is generally better to define constants for the keys you use in NSUserDefaults to avoid any mistyping errors, which may be hard to debug when they happen.
Edit
It looks like you already did a mistyping error nastoikaIP != nastroikaIP. Notice the missing/extra r letter.
Your saving a string so you need to setObject rather than setValue
[[NSUserDefaults standardUserDefaults] setObject:#"vruch" forKey:#"nastoikaIP"];
[[NSUserDefaults standardUserDefaults] synchronize];
and change it for the loading aswell
NSString* automanual = [[NSUserDefaults standardUserDefaults] objectForKey:#"nastroikaIP"];
if ([automanual isEqualToString:#"vruch"]) {
autovruch.selectedSegmentIndex = 1;
[self obnovittext];
}