IOS 调用地图

App中如何打开百度或者高德地图

百度地图URI API地址
高德地图URI API地址
腾讯地图URI API地址

[[UIApplication sharedApplication]canOpenURL:[NSURL URLWithString:@"baidumap://map/"]]

[[UIApplication sharedApplication]canOpenURL:[NSURL URLWithString:@"iosamap://"]]
可以判读是否安装的百度地图与高德地图。而后通过

//打开百度地图导航

- (void)openBaiDuMap{
NSString *urlString =@"";
///打开百度地图app
urlString = [[NSString stringWithFormat:@"baidumap://map/direction?origin=latlng:%f,%f|name:%@&destination=latlng:%f,%f|name:%@&mode=driving&region=%@&output=html",34.264642646862,108.95108518068,@"我的位置",39.98871,116.43234,@"天安门",@"吉林"] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] ;

/////打开webapp（网页版）
//urlString = [[NSString stringWithFormat:@"https://api.map.baidu.com/direction?origin=latlng:%f,%f|name:%@&destination=latlng:%f,%f|name:%@&mode=driving&region=%@&output=html",34.264642646862,108.95108518068,@"我的位置",39.98871,116.43234,@"天安门",@"吉林"] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] ;


[[UIApplication sharedApplication]openURL:[NSURL URLWithString:urlString]];

}
//打开高德地图导航

- (void)openGaoDeMap{

NSString *urlString = [[NSString stringWithFormat:@"iosamap://navi?sourceApplication=%@&backScheme=%@&poiname=%@&lat=%f&lon=%f&dev=1&style=2",@"app name", @"YGche", @"终点", _shopLat, _shopLon] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

//urlString = [[NSString stringWithFormat:@"iosamap://path?sourceApplication=%@&sid=BGVIS1&slat=%f&slon=%f&sname=我的位置&did=BGVIS2&dlat=%f&dlon=%f&dname=%@&dev=0&m=0&t=0",@"点点吉林",39.92848272,116.39560823,39.98848272,116.47560823,@"终点"] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
//    urlString = [[NSString stringWithFormat:@"http://m.amap.com/?from=%f,%f(我的位置)&to=%f,%f(终点)&type=0&opt=1",39.997361,116.478346,39.966577,116.3246] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];


[[UIApplication sharedApplication]openURL:[NSURL URLWithString:urlString]];

}

//打开腾讯地图导航（暂不支持打开打开）

- (void)openBaiDuMap{
NSString *urlString =@"";
/////打开webapp（网页版）
NSString *urlString=@"";
                        urlString = [[NSString stringWithFormat:@"https://apis.map.qq.com/uri/v1/routeplan?type=drive&from=我的位置&fromcoord=39.980683,116.302&to=%@&tocoord=%f,%f&policy=1&referer=点点吉林",@"终点",latitude,longitude] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];


[[UIApplication sharedApplication]openURL:[NSURL URLWithString:urlString]];

}

//打开苹果自带地图导航

- (void)openAppleMap{

//起点

CLLocationCoordinate2D coords1 = CLLocationCoordinate2DMake(currentLatitude,currentLongitude);

MKMapItem *currentLocation = [[MKMapItem alloc] initWithPlacemark:[[MKPlacemark alloc] initWithCoordinate:coords1 addressDictionary:nil]];

//目的地的位置

CLLocationCoordinate2D coords2 = CLLocationCoordinate2DMake(_shopLat,_shopLon);

MKMapItem *toLocation = [[MKMapItem alloc] initWithPlacemark:[[MKPlacemark alloc] initWithCoordinate:coords2 addressDictionary:nil]];

toLocation.name =address;

NSArray *items = [NSArray arrayWithObjects:currentLocation, toLocation, nil];

NSDictionary *options = @{ MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeDriving, MKLaunchOptionsMapTypeKey: [NSNumber numberWithInteger:MKMapTypeStandard], MKLaunchOptionsShowsTrafficKey:@YES };

//打开苹果自身地图应用，并呈现特定的item

[MKMapItem openMapsWithItems:items launchOptions:options];

}

在更新iOS9后原来的方法不起做用了。解决办法：
在info.plist添加白名单
<key>LSApplicationQueriesSchemes</key>
<array>
<string>baidumap</string>
<string>iosamap</string>
</array>

百度坐标、火星坐标、地球坐标间的转换

其中高德地图和腾讯地图用的是火星坐标

//
//  CLLocation+LSLocation.h
//  JLDianDian
//
//  Created by a110 on 16/5/23.
//  Copyright © 2016年 . All rights reserved.
//

#import <CoreLocation/CoreLocation.h>

@interface CLLocation (LSLocation)
///从地图坐标转化到火星坐标
- (CLLocation*)locationMarsFromEarth;

///从火星坐标转化到百度坐标
- (CLLocation*)locationBaiduFromMars;

///从百度坐标到火星坐标
- (CLLocation*)locationMarsFromBaidu;

///从火星坐标到地图坐标
- (CLLocation*)locationEarthFromMars;

///从百度坐标到地图坐标
- (CLLocation*)locationEarthFromBaidu;
@end

.m文件中

//
//  CLLocation+LSLocation.m
//  JLDianDian
//
//  Created by a110 on 16/5/23.
//  Copyright © 2016年 司文. All rights reserved.
//

#import "CLLocation+LSLocation.h"

void transform_earth_from_mars(double lat, double lng, double* tarLat, double* tarLng);
void transform_mars_from_baidu(double lat, double lng, double* tarLat, double* tarLng);
void transform_baidu_from_mars(double lat, double lng, double* tarLat, double* tarLng);

@implementation CLLocation (LSLocation)
- (CLLocation*)locationMarsFromEarth
{
    double lat = 0.0;
    double lng = 0.0;
    transform_earth_from_mars(self.coordinate.latitude, self.coordinate.longitude, &lat, &lng);
    return [[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake(lat+self.coordinate.latitude, lng+self.coordinate.longitude)
                                         altitude:self.altitude
                               horizontalAccuracy:self.horizontalAccuracy
                                 verticalAccuracy:self.verticalAccuracy
                                           course:self.course
                                            speed:self.speed
                                        timestamp:self.timestamp];
}

- (CLLocation*)locationEarthFromMars
{
    double lat = 0.0;
    double lng = 0.0;
    transform_earth_from_mars(self.coordinate.latitude, self.coordinate.longitude, &lat, &lng);
    return [[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake(self.coordinate.latitude-lat, self.coordinate.longitude-lng)
                                         altitude:self.altitude
                               horizontalAccuracy:self.horizontalAccuracy
                                 verticalAccuracy:self.verticalAccuracy
                                           course:self.course
                                            speed:self.speed
                                        timestamp:self.timestamp];
    return nil;
}

- (CLLocation*)locationBaiduFromMars
{
    double lat = 0.0;
    double lng = 0.0;
    transform_mars_from_baidu(self.coordinate.latitude, self.coordinate.longitude, &lat, &lng);
    return [[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake(lat, lng)
                                         altitude:self.altitude
                               horizontalAccuracy:self.horizontalAccuracy
                                 verticalAccuracy:self.verticalAccuracy
                                           course:self.course
                                            speed:self.speed
                                        timestamp:self.timestamp];
}

- (CLLocation*)locationMarsFromBaidu
{
    double lat = 0.0;
    double lng = 0.0;
    transform_baidu_from_mars(self.coordinate.latitude, self.coordinate.longitude, &lat, &lng);
    return [[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake(lat, lng)
                                         altitude:self.altitude
                               horizontalAccuracy:self.horizontalAccuracy
                                 verticalAccuracy:self.verticalAccuracy
                                           course:self.course
                                            speed:self.speed
                                        timestamp:self.timestamp];
}

-(CLLocation*)locationEarthFromBaidu
{
    double lat = 0.0;
    double lng = 0.0;
    CLLocation *Mars = [self locationMarsFromBaidu];
    
    transform_earth_from_mars(Mars.coordinate.latitude, Mars.coordinate.longitude, &lat, &lng);
    return [[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake(Mars.coordinate.latitude-lat, Mars.coordinate.longitude-lng)
                                         altitude:self.altitude
                               horizontalAccuracy:self.horizontalAccuracy
                                 verticalAccuracy:self.verticalAccuracy
                                           course:self.course
                                            speed:self.speed
                                        timestamp:self.timestamp];
    return nil;
}

@end



// --- transform_earth_from_mars ---
// 参考来源：https://on4wp7.codeplex.com/SourceControl/changeset/view/21483#353936
// Krasovsky 1940
//
// a = 6378245.0, 1/f = 298.3
// b = a * (1 - f)
// ee = (a^2 - b^2) / a^2;
const double a = 6378245.0;
const double ee = 0.00669342162296594323;

bool transform_sino_out_china(double lat, double lon)
{
    if (lon < 72.004 || lon > 137.8347)
        return true;
    if (lat < 0.8293 || lat > 55.8271)
        return true;
    return false;
}

double transform_earth_from_mars_lat(double x, double y)
{
    double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * sqrt(abs(x));
    ret += (20.0 * sin(6.0 * x * M_PI) + 20.0 * sin(2.0 * x * M_PI)) * 2.0 / 3.0;
    ret += (20.0 * sin(y * M_PI) + 40.0 * sin(y / 3.0 * M_PI)) * 2.0 / 3.0;
    ret += (160.0 * sin(y / 12.0 * M_PI) + 320 * sin(y * M_PI / 30.0)) * 2.0 / 3.0;
    return ret;
}

double transform_earth_from_mars_lng(double x, double y)
{
    double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * sqrt(abs(x));
    ret += (20.0 * sin(6.0 * x * M_PI) + 20.0 * sin(2.0 * x * M_PI)) * 2.0 / 3.0;
    ret += (20.0 * sin(x * M_PI) + 40.0 * sin(x / 3.0 * M_PI)) * 2.0 / 3.0;
    ret += (150.0 * sin(x / 12.0 * M_PI) + 300.0 * sin(x / 30.0 * M_PI)) * 2.0 / 3.0;
    return ret;
}

void transform_earth_from_mars(double lat, double lng, double* tarLat, double* tarLng)
{
    if (transform_sino_out_china(lat, lng))
    {
        *tarLat = lat;
        *tarLng = lng;
        return;
    }
    double dLat = transform_earth_from_mars_lat(lng - 105.0, lat - 35.0);
    double dLon = transform_earth_from_mars_lng(lng - 105.0, lat - 35.0);
    double radLat = lat / 180.0 * M_PI;
    double magic = sin(radLat);
    magic = 1 - ee * magic * magic;
    double sqrtMagic = sqrt(magic);
    dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * M_PI);
    dLon = (dLon * 180.0) / (a / sqrtMagic * cos(radLat) * M_PI);
    *tarLat = dLat;
    *tarLng = dLon;
}

// --- transform_earth_from_mars end ---
// --- transform_mars_vs_bear_paw ---
// 参考来源：http://blog.woodbunny.com/post-68.html
const double x_pi = M_PI * 3000.0 / 180.0;

void transform_mars_from_baidu(double gg_lat, double gg_lon, double *bd_lat, double *bd_lon)
{
    double x = gg_lon, y = gg_lat;
    double z = sqrt(x * x + y * y) + 0.00002 * sin(y * x_pi);
    double theta = atan2(y, x) + 0.000003 * cos(x * x_pi);
    *bd_lon = z * cos(theta) + 0.0065;
    *bd_lat = z * sin(theta) + 0.006;
}

void transform_baidu_from_mars(double bd_lat, double bd_lon, double *gg_lat, double *gg_lon)
{
    double x = bd_lon - 0.0065, y = bd_lat - 0.006;
    double z = sqrt(x * x + y * y) - 0.00002 * sin(y * x_pi);
    double theta = atan2(y, x) - 0.000003 * cos(x * x_pi);
    *gg_lon = z * cos(theta);
    *gg_lat = z * sin(theta);
}

.m文件中