iOS中的NSNumber等效错误

Question

I'm trying to find beacons in range and sort UITableViewCells hereafter. I am trying this;

NSLog(@"Trying (%@ = %@,  %@ = %@)",major, beacon1.major,minor, beacon1.minor);


        if(beacon1.major == major && beacon1.minor == minor){
            NSLog(@"%@;%@ is first",major,minor);
            [room insertObject:room atIndex:0];

        }

This means that if NSNumber Major and NSNumber Minor are equal to found beacon, the if will be run. NSLog Retuns this:

2015-01-02 12:33:02.277 App[468:30045] Trying (47566000 = 47566,  39534000 = 39534)
2015-01-02 12:33:02.278 App[468:30045] Trying (47566000 = 47566,  39534000 = 39534)
2015-01-02 12:33:02.279 App[468:30045] Trying (47566 = 47566,  39534 = 39534)

I would hereafter expect it to run the third time. But it does not.

Do anyone have a clue whats going on here?

Answer 1

You are comparing for variable instance equality, not the contained values.

Use isEqualToNumber: instead. See documentation .

The code should look like this:

if ([beacon1.major isEqualToNumber:major] && [beacon1.minor isEqualToNumber:minor]) {
    ...
}