How can i equal a int to a int64_t with out getting the conversion loses integer precision warning?

Question

I am getting the implicit conversion loses interger precision warning and need help finding a solution. I have seen similar problems but have not found a solution for my problem yet. This are the integers that are declared...

@property (nonatomic) int64_t score;
NSInteger highscorenumber;

this is whats in my .m file when game over function is called...

    if (score > highscorenumber) {
    highscorenumber = score;
    [[NSUserDefaults standardUserDefaults] setInteger:highscorenumber forKey:@"highscoresaved"];
    [self clapsound];
}
else{
    highscore.text = [NSString stringWithFormat:@"High Score: %li",(long)highscorenumber];
}

the warning come up in this part

        highscorenumber = score;

if i change the highscorenumber to a int64_t the warning comes up here...

        [[NSUserDefaults standardUserDefaults] setInteger:highscorenumber forKey:@"highscoresaved"];

The reason i am using int64_t for score is to use GameKit (GameCenter).

Doro · Accepted Answer · 2015-06-25T05:59:30.343

1

NSInteger and long are always pointer-sized. That means they're 32-bits on 32-bit systems, and 64 bits on 64-bit systems.

Under mac os uint64_t defined as

typedef unsigned long long   uint64_t;

So, i recommend you to change highscorenumber to NSUInteger and save it to NSUserDefaults as

[[NSUserDefaults standardUserDefaults] setValue:@(highscorenumber) forKey:@"highscoresaved"];

EDIT:

Getting value back:

NSNumber *highscorenumber = (NSNumber*)[[NSUserDefaults standardUserDefaults] valueForKey:@"highscoresaved"];

edited Jun 25 '15 at 05:59

answered Jun 24 '15 at 09:46

Doro

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ok, and when i want to load it back would i do it like this. highscorenumber = [[NSUserDefaults standardUserDefaults] integerForKey:@"highscoresaved"]; – Emmanuel Amaro Jun 24 '15 at 19:11
no, you should cast it to NSNumber after valueForKey: selector. Remember - you should use exactly the same method to set and get data: for example, if you set data throw 'setValue', you must get it like 'valueForKey', if you set throw 'setInteger: forKey' call 'integerForKey:' – Doro Jun 25 '15 at 06:02

score 0 · Answer 2 · answered Jun 24 '15 at 09:33

0

Try this:

highscorenumber = @(score);

answered Jun 24 '15 at 09:33

João Pereira

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score 0 · Answer 3 · edited Aug 30 '20 at 21:41

0

Try this

highscorenumber = [score integerValue];

edited Aug 30 '20 at 21:41

Dharman

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answered Jun 24 '15 at 09:41

Pradumna Patil

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score 0 · Answer 4 · answered Jun 24 '15 at 09:46

0

Why do you use NSInteger for storing highscorenumber? If you want it to be compatible with GameKit it should be 64-bit, you need to use int64_t for your highscore property

int64_t highscorenumber;

answered Jun 24 '15 at 09:46

Alexander Tkachenko

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How can i equal a int to a int64_t with out getting the conversion loses integer precision warning?

4 Answers4