iOS 打开第三方导航

在IOS6.0系统后，兼容iOS5.0与iOS6.0地图导航，需要分两个步骤

#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)//用来获取手机的系统，判断系统是多少

    CLLocationCoordinate2D startCoor = self.mapView.userLocation.location.coordinate;  
    CLLocationCoordinate2D endCoor = CLLocationCoordinate2DMake(startCoor.latitude+0.01, startCoor.longitude+0.01);  
      
    if (SYSTEM_VERSION_LESS_THAN(@"6.0")) { // ios6以下，调用google map  
          
        NSString *urlString = [[NSString alloc] initWithFormat:@"http://maps.google.com/maps?saddr=%f,%f&daddr=%f,%f&dirfl=d",startCoor.latitude,startCoor.longitude,endCoor.latitude,endCoor.longitude];  
        //        @"http://maps.apple.com/?saddr=%f,%f&daddr=%f,%f",startCoor.latitude,startCoor.longitude,endCoor.latitude,endCoor.longitude  
        urlString =  [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];  
        NSURL *aURL = [NSURL URLWithString:urlString];  
        [[UIApplication sharedApplication] openURL:aURL];  
    } else { // 直接调用ios自己带的apple map  
          
        MKMapItem *currentLocation = [MKMapItem mapItemForCurrentLocation];  
        MKMapItem *toLocation = [[MKMapItem alloc] initWithPlacemark:[[MKPlacemark alloc] initWithCoordinate:endCoor addressDictionary:nil]];  
        toLocation.name = @"to name";  
          
        [MKMapItem openMapsWithItems:@[currentLocation, toLocation]  
                       launchOptions:@{MKLaunchOptionsDirectionsModeKey: MKLaunchOptionsDirectionsModeDriving,MKLaunchOptionsShowsTrafficKey: [NSNumber numberWithBool:YES]}];  
          
    }  

如果不想使用苹果自带的地图的话，也可以使用第三方的地图，如百度、Google　Maps、高德等

使用前，先判断设备上是否已安装应用

百度地图：

if ([[UIApplicationsharedApplication]canOpenURL:[NSURLURLWithString:@"baidumap://map/"]])

参考

高德地图：

if ([[UIApplicationsharedApplication]canOpenURL:[NSURLURLWithString:@"iosamap://"]])

参考

Google Maps：

if ([[UIApplicationsharedApplication]canOpenURL:[NSURLURLWithString:@"comgooglemaps://"]])

参考

示例代码

 (void)availableMapsApps {  
    [self.availableMaps removeAllObjects];  
      
    CLLocationCoordinate2D startCoor = self.mapView.userLocation.location.coordinate;  
    CLLocationCoordinate2D endCoor = CLLocationCoordinate2DMake(startCoor.latitude+0.01, startCoor.longitude+0.01);  
    NSString *toName = @"to name";  
      
    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"baidumap://map/"]]){  
        NSString *urlString = [NSString stringWithFormat:@"baidumap://map/direction?origin=latlng:%f,%f|name:我的位置&destination=latlng:%f,%f|name:%@&mode=transit",  
                               startCoor.latitude, startCoor.longitude, endCoor.latitude, endCoor.longitude, toName];  
          
        NSDictionary *dic = @{@"name": @"百度地图",  
                              @"url": urlString};  
        [self.availableMaps addObject:dic];  
    }  
    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"iosamap://"]]) {  
        NSString *urlString = [NSString stringWithFormat:@"iosamap://navi?sourceApplication=%@&backScheme=applicationScheme&poiname=fangheng&poiid=BGVIS&lat=%f&lon=%f&dev=0&style=3",  
                               @"云华时代", endCoor.latitude, endCoor.longitude];  
          
        NSDictionary *dic = @{@"name": @"高德地图",  
                              @"url": urlString};  
        [self.availableMaps addObject:dic];  
    }  
    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"comgooglemaps://"]]) {  
        NSString *urlString = [NSString stringWithFormat:@"comgooglemaps://?saddr=&daddr=%f,%f¢er=%f,%f&directionsmode=transit", endCoor.latitude, endCoor.longitude, startCoor.latitude, startCoor.longitude];  
          
        NSDictionary *dic = @{@"name": @"Google Maps",  
                              @"url": urlString};  
        [self.availableMaps addObject:dic];  
    }  
}  

显示一个ActionSheet

    [self availableMapsApps];  
        UIActionSheet *action = [[UIActionSheet alloc] init];  
          
        [action addButtonWithTitle:@"使用系统自带地图导航"];  
        for (NSDictionary *dic in self.availableMaps) {  
            [action addButtonWithTitle:[NSString stringWithFormat:@"使用%@导航", dic[@"name"]]];  
        }  
        [action addButtonWithTitle:@"取消"];  
        action.cancelButtonIndex = self.availableMaps.count + 1;  
        action.delegate = self;  
        [action showInView:self.view];  

实现delegate

    - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {  
        if (buttonIndex == 0) {  
            CLLocationCoordinate2D startCoor = self.mapView.userLocation.location.coordinate;  
            CLLocationCoordinate2D endCoor = CLLocationCoordinate2DMake(startCoor.latitude+0.01, startCoor.longitude+0.01);  
              
            if (SYSTEM_VERSION_LESS_THAN(@"6.0")) { // ios6以下，调用google map  
                  
                NSString *urlString = [[NSString alloc] initWithFormat:@"http://maps.google.com/maps?saddr=%f,%f&daddr=%f,%f&dirfl=d",startCoor.latitude,startCoor.longitude,endCoor.latitude,endCoor.longitude];  
                //        @"http://maps.apple.com/?saddr=%f,%f&daddr=%f,%f",startCoor.latitude,startCoor.longitude,endCoor.latitude,endCoor.longitude  
                urlString =  [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];  
                NSURL *aURL = [NSURL URLWithString:urlString];  
                [[UIApplication sharedApplication] openURL:aURL];  
            } else{// 直接调用ios自己带的apple map  
                  
                MKMapItem *currentLocation = [MKMapItem mapItemForCurrentLocation];  
                MKPlacemark *placemark = [[MKPlacemark alloc] initWithCoordinate:endCoor addressDictionary:nil];  
                MKMapItem *toLocation = [[MKMapItem alloc] initWithPlacemark:placemark];  
                toLocation.name = @"to name";  
                  
                [MKMapItem openMapsWithItems:@[currentLocation, toLocation]  
                               launchOptions:@{MKLaunchOptionsDirectionsModeKey: MKLaunchOptionsDirectionsModeDriving,MKLaunchOptionsShowsTrafficKey: [NSNumber numberWithBool:YES]}];  
                  
            }  
        }else if (buttonIndex < self.availableMaps.count+1) {  
            NSDictionary *mapDic = self.availableMaps[buttonIndex-1];  
            NSString *urlString = mapDic[@"url"];  
            urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];  
            NSURL *url = [NSURL URLWithString:urlString];  
            DEBUG_LOG(@"\n%@\n%@\n%@", mapDic[@"name"], mapDic[@"url"], urlString);  
            [[UIApplication sharedApplication] openURL:url];  
        }  
    }