converting to boxing syntax requires casting UIBarMetrics Warning

Question

[self backgroundImages][[NSNumber numberWithInt:barMetrics]] = backgroundImage;

How can I solve this warning?

enter image description here

score 2 · Accepted Answer · answered Dec 11 '13 at 11:40

2

To get rid of the warning use

[NSNumber numberWithInteger:metrics]

or

[NSNumber numberWithInt:(int)metrics]

because metrics is an NSInteger and numberWithInt accepts int not NSInteger.

But what you really want is

[self backgroundImages][(int)metrics];

answered Dec 11 '13 at 11:40

peko

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Technically, you'll also want to cast the item in the array as a `UIImage`, since objects in `NSArray` are `id`: `UIImage *image = (UIImage *)[self background][NSNumber numberWithInteger:metrics]` – cleverbit Dec 11 '13 at 12:01
@richarddas A cast there would serve no purpose. – jlehr Dec 11 '13 at 13:07

score 1 · Answer 2 · answered Dec 11 '13 at 11:39

You try to pass NSNumber as a index to your array but you should pass int instead:

[self backgroundImages][It should be an int number]

I assume backgroundImages is array. BarMetrics is an UIBarMetrics type you cannot pass it as an int.

You can do something like that:

int i = -1;
if (barMetrics == UIBarMetricsDefault)
    i = 0;
if (barMetrics == UIBarMetricsLandscapePhone)
    i = 1;
// and so on....
[self backgroundImages][i]

converting to boxing syntax requires casting UIBarMetrics Warning

2 Answers2