ios 跳转第三方App实现导航

要跳转第三方App实现导航就首先需要了解两个问题
1.怎么判断手机上是否安装了第三方导航App
2.怎么实现跳转到第三方App

问题1
比如你如果要检测是否有安装百度地图APP，那么就是：

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

常用的4个地图的 URL Scheme:
1.苹果自带地图（不需要检测，所以不需要URL Scheme）
2.百度地图 ：baidumap://
3.高德地图 ：iosamap://
4.谷歌地图 ：comgooglemaps://

问题2
在 iOS 9 之后我们做跳转是需要有个白名单的

image

具体实现代码

#import 

@implementation ThirdAppNavigationManager

+ (void)thirdAppNavigation:(NSString *)lat lng:(NSString *)lng
{
    NSMutableArray *maps = [NSMutableArray array];
    
    //苹果原生地图-苹果原生地图方法和其他不一样
    NSMutableDictionary *iosMapDic = [NSMutableDictionary dictionary];
    iosMapDic[@"title"] = @"苹果地图";
    [maps addObject:iosMapDic];
    
    //百度地图
    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"baidumap://"]]) {
        NSMutableDictionary *baiduMapDic = [NSMutableDictionary dictionary];
        baiduMapDic[@"title"] = @"百度地图";
        NSString *urlString = [[NSString stringWithFormat:@"baidumap://map/direction?origin={{我的位置}}&destination=latlng:%@,%@|name=北京&mode=driving&coord_type=gcj02",lat,lng] stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
        baiduMapDic[@"url"] = urlString;
        [maps addObject:baiduMapDic];
    }
    
    //高德地图
    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"iosamap://"]]) {
        NSMutableDictionary *gaodeMapDic = [NSMutableDictionary dictionary];
        gaodeMapDic[@"title"] = @"高德地图";
        NSString *urlString = [[NSString stringWithFormat:@"iosamap://navi?sourceApplication=%@&backScheme=%@&lat=%@&lon=%@&dev=0&style=2",@"导航功能",@"nav123456",lat,lng] stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
        gaodeMapDic[@"url"] = urlString;
        [maps addObject:gaodeMapDic];
    }
    
    //谷歌地图
    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"comgooglemaps://"]]) {
        NSMutableDictionary *googleMapDic = [NSMutableDictionary dictionary];
        googleMapDic[@"title"] = @"谷歌地图";
        NSString *urlString = [[NSString stringWithFormat:@"comgooglemaps://?x-source=%@&x-success=%@&saddr=&daddr=%@,%@&directionsmode=driving",@"导航测试",@"nav123456",lat,lng] stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
        googleMapDic[@"url"] = urlString;
        [maps addObject:googleMapDic];
    }
    
    //腾讯地图
    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"qqmap://"]]) {
        NSMutableDictionary *qqMapDic = [NSMutableDictionary dictionary];
        qqMapDic[@"title"] = @"腾讯地图";
        NSString *urlString = [[NSString stringWithFormat:@"qqmap://map/routeplan?from=我的位置&type=drive&tocoord=%@,%@&to=终点&coord_type=1&policy=0",lat,lng] stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
        qqMapDic[@"url"] = urlString;
        [maps addObject:qqMapDic];
    }
    
    
    //选择
    UIAlertController * alert = [UIAlertController alertControllerWithTitle:@"选择地图" message:nil preferredStyle:UIAlertControllerStyleActionSheet];
    
    NSInteger index = maps.count;
    
    for (int i = 0; i < index; i++) {
        
        NSString * title = maps[i][@"title"];
        
        //苹果原生地图方法
        if (i == 0) {
            
            UIAlertAction * action = [UIAlertAction actionWithTitle:title style:(UIAlertActionStyleDefault) handler:^(UIAlertAction * _Nonnull action) {
                [self navAppleMap:lat lng:lng];
            }];
            [alert addAction:action];
            
            continue;
        }
        
        UIAlertAction * action = [UIAlertAction actionWithTitle:title style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
            
            NSString *urlString = maps[i][@"url"];
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlString] options:@{} completionHandler:^(BOOL success) {
                
            }];
        }];

        [alert addAction:action];
    }
    
    UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
        NSLog(@"点击了取消");
    }];
     [alert addAction:cancelAction];
    
    [[UIViewController getCurrentViewController] presentViewController:alert animated:YES completion:nil];
}

//苹果地图
+ (void)navAppleMap:(NSString *)lat lng:(NSString *)lng
{
    //终点坐标
    CLLocationCoordinate2D loc = CLLocationCoordinate2DMake(lat.doubleValue, lng.doubleValue);
    
    //用户位置
    MKMapItem *currentLoc = [MKMapItem mapItemForCurrentLocation];
    //终点位置
    MKMapItem *toLocation = [[MKMapItem alloc]initWithPlacemark:[[MKPlacemark alloc]initWithCoordinate:loc addressDictionary:nil] ];
    
    
    NSArray *items = @[currentLoc,toLocation];
    
    NSDictionary *dic = @{
                          MKLaunchOptionsDirectionsModeKey : MKLaunchOptionsDirectionsModeDriving,
                          MKLaunchOptionsMapTypeKey : @(MKMapTypeStandard),
                          MKLaunchOptionsShowsTrafficKey : @(YES)
                          };
    
    [MKMapItem openMapsWithItems:items launchOptions:dic];
}
@end