iOS
MKDistanceFormatter
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Stringa dalla distanza
Dato un CLLocationDistance
(semplicemente un Double
rappresenta i metri), CLLocationDistance
una stringa leggibile dall'utente:
let distance = CLLocationDistance(42)
let formatter = MKDistanceFormatter()
let answer = formatter.stringFromDistance(distance)
// answer = "150 feet"
Objective-C
CLLocationDistance distance=42;
MKDistanceFormatter *formatter=[[MKDistanceFormatter alloc]init];
NSString *answer=[formatter stringFromDistance:distance];
// answer = "150 feet"
Per impostazione predefinita, rispetta le impostazioni locali dell'utente.
Unità di distanza
import Mapkit
Impostare le units
su uno di .Default, .Metric, .Imperial, .ImperialWithYards
:
formatter.units = .Metric
var answer = formatter.stringFromDistance(distance)
// "40 m"
formatter.units = .ImperialWithYards
answer = formatter.stringFromDistance(distance)
// "50 yards"
Objective-C
MKDistanceFormatter *formatter=[[MKDistanceFormatter alloc]init];
formatter.units=MKDistanceFormatterUnitsMetric;
NSString *answer=[formatter stringFromDistance:distance];
//40 m
formatter.units=MKDistanceFormatterUnitsImperialWithYards;
NSString *answer=[formatter stringFromDistance:distance];
//50 yards
Stile unitario
Imposta unitStyle
su uno di .Default, .Abbreviated, .Full
:
formatter.unitStyle = .Full
var answer = formatter.stringFromDistance(distance)
// "150 feet"
formatter.unitStyle = .Abbreviated
answer = formatter.stringFromDistance(distance)
// "150 ft"
Objective-C
formatter.unitStyle=MKDistanceFormatterUnitStyleFull;
NSString *answer=[formatter stringFromDistance:distance];
// "150 feet"
formatter.unitStyle=MKDistanceFormatterUnitStyleAbbreviated;
NSString *answer=[formatter stringFromDistance:distance];
// "150 ft"
Modified text is an extract of the original Stack Overflow Documentation
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