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#import "MGLDistanceFormatter.h"
@interface MGLDistanceFormatter()
@end
@implementation MGLDistanceFormatter
static const CLLocationDistance METERS_PER_MILE = 1609.344;
static const double YARDS_PER_MILE = 1760.0;
static const double FEET_PER_MILE = YARDS_PER_MILE * 3.0;
- (NSString *)stringFromDistance:(CLLocationDistance)distance {
double miles = distance / METERS_PER_MILE;
double feet = miles * FEET_PER_MILE;
NSLengthFormatterUnit unit = NSLengthFormatterUnitMillimeter;
[self unitStringFromMeters:distance usedUnit:&unit];
self.numberFormatter.roundingIncrement = @0.25;
if (unit == NSLengthFormatterUnitYard) {
if (miles > 0.2) {
unit = NSLengthFormatterUnitMile;
return [self stringFromValue:miles unit:unit];
} else {
unit = NSLengthFormatterUnitFoot;
self.numberFormatter.roundingIncrement = @1;
return [self stringFromValue:feet unit:unit];
}
} else {
return [self stringFromMeters:distance];
}
}
@end
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