iOS中根据经纬度在地图上画线-MKPolyline的应用
这个问题同样是困扰我很久，网上的博客也语焉不详，甚至包括外网上的资料，也不置可否，调试很久也找不到突破口，幸得贴吧的大神指导，才解决这个问题，下面贴出全部代码。
//
// ViewController.m
// MKPolyline
//
// Created by hehongbo on 15/12/13.
// Copyright (c) 2015年 hhb. All rights reserved.
//
#import "ViewController.h"
#import <MapKit/MapKit.h>
@interface ViewController ()<MKMapViewDelegate>
@property (weak, nonatomic) IBOutlet MKMapView *mapView;
@property (strong, nonatomic) MKPolyline *myPolyline;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// 设置代理
self.mapView.delegate = self;
NSString *thePath = @"106.73293,10.79871|106.73229,10.79841|106.7318,10.79832|106.73164,10.79847|106.73156,10.7988|106.73106,10.79886|106.73057,10.79877|106.73002,10.79866|106.72959,10.79875|106.72935,10.7992|106.7293,10.79971|106.72925,10.80015|106.72942,10.80046|106.72981,10.80058|106.73037,10.8007|106.73067,10.80072|106.7311,10.80076|106.7315,10.80079|106.73194,10.80082|106.73237,10.80086|106.73265,10.80098|106.73269,10.80153|106.7327,10.80207|106.73257,10.80243|106.73718,10.79941|106.73445,10.79946|106.73144,10.79885|106.72987,10.8005|106.73192,10.79991|106.72383,10.79827|106.71543,10.80086|106.70957,10.80121|106.70507,10.79834|106.70121,10.79432|106.69603,10.79158|106.69322,10.78911|106.69196,10.78785|106.68768,10.78355|106.68539,10.7812|106.68336,10.7791|106.67048,10.78377|106.64864,10.78319|106.6499,10.77949|106.63697,10.77439|106.6447,10.77936|106.65804,10.76279|106.66792,10.76805|106.68191,10.77516|106.68336,10.77241|106.68319,10.77622|106.67482,10.78149|106.67095,10.78193|106.65217,10.78641|";
NSArray *array = [thePath componentsSeparatedByString:@"|"];
CLLocationCoordinate2D pointToUse[2];
for (NSInteger i = 0; i < (array.count - 2); i++) {
NSString *str = array[i];
NSArray *temp = [str componentsSeparatedByString:@","];
NSString *lon = temp[0];
NSString *lat = temp[1];
CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake([lat doubleValue], [lon doubleValue]);
pointToUse[0] = coordinate;
NSString *str2 = array[i + 1];
NSArray *temp2 = [str2 componentsSeparatedByString:@","];
NSString *lon2 = temp2[0];
NSString *lat2 = temp2[1];
CLLocationCoordinate2D coordinate2 = CLLocationCoordinate2DMake([lat2 doubleValue], [lon2 doubleValue]);
pointToUse[1] = coordinate2;
self.myPolyline = [MKPolyline polylineWithCoordinates:pointToUse count:2];
[self.mapView addOverlay:self.myPolyline];
}
}
- (MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id<MKOverlay>)overlay {
if ([overlay isKindOfClass:[MKPolyline class]])
{
MKPolylineView *lineview = [[MKPolylineView alloc] initWithOverlay:overlay];
lineview.strokeColor = [[UIColor blueColor] colorWithAlphaComponent:0.5];
lineview.lineWidth = 30;
return lineview;
}
return nil;
}
@end