[objc] view plaincopy 
1. BOOL hasBaiduMap = NO;  
2.         BOOL hasGaodeMap = NO;  
3.           
4.         if ([[UIApplication sharedApplication]canOpenURL:[NSURL URLWithString:@"baidumap://map/"]]){  
5.             hasBaiduMap = YES;  
6.         }  
7.         if ([[UIApplication sharedApplication]canOpenURL:[NSURL URLWithString:@"iosamap://"]]){  
8.             hasGaodeMap = YES;  
9.         }  
10.       
11.   
12.     if ([@"使用百度地图导航" isEqualToString:title])  
13.         {  
14.             NSString *urlString = [[NSString stringWithFormat:@"baidumap://map/direction?origin=latlng:%f,%f|name:我的位置&destination=latlng:%f,%f|name:终点&mode=driving",currentLat, currentLon,_shopLat,_shopLon] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] ;  
15.               
16.             [[UIApplication sharedApplication]openURL:[NSURL URLWithString:urlString]];  
17.         }  
18.         else if ([@"使用高德地图导航" isEqualToString:title])  
19.         {  
20.             NSString *urlString = [[NSString stringWithFormat:@"iosamap://navi?sourceApplication=%@&backScheme=%@&poiname=%@&lat=%f&lon=%f&dev=1&style=2",@"app name", yourscheme, @"终点", _shopLat, _shopLon] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];  
21.   
22.             [[UIApplication sharedApplication]openURL:[NSURL URLWithString:urlString]];  

23.         }