iOS获取到用户当前位置

cllocationmanager *locationmanager;//定义manager
// 判断定位操作是否被允许
if([cllocationmanager locationservicesenabled]) {
  cllocationmanager *locationmanager = [[[cllocationmanager alloc] init] autorelease];

   self.locationmanager.delegate = self;
}else {
   //提示用户无法进行定位操作
}

// 开始定位
[locationmanager startupdatinglocation];

- (void)locationmanager:(cllocationmanager *)manager 
  didupdatetolocation:(cllocation *)newlocation 
      fromlocation:(cllocation *)oldlocation {

 //latitude和lontitude均为nsstring型变量
    //纬度
 self.latitude = [nsstring stringwithformat:@"%.4f", newlocation.coordinate.latitude];

    //经度
 self.longitude = [nsstring stringwithformat:@"%.4f",     newlocation.coordinate.longitude];
 
}

-(void)locationmanager:(cllocationmanager *)manager didupdatelocations:(nsarray *)locations
{
  //此处locations存储了持续更新的位置坐标值，取最后一个值为最新位置，如果不想让其持续更新位置，则在此方法中获取到一个值之后让locationmanager stopupdatinglocation
  cllocation *currentlocation = [locations lastobject];
  
  cllocationcoordinate2d coor = currentlocation.coordinate;
  self.latitude = coor.latitude;
  self.longitude = coor.longitude;
  
  //[self.locationmanager stopupdatinglocation];
  
}

- (void)locationmanager:(cllocationmanager *)manager
    didfailwitherror:(nserror *)error {
 
 if (error.code == kclerrordenied) {
   // 提示用户出错原因，可按住option键点击 kclerrordenied的查看更多出错信息，可打印error.code值查找原因所在
 }
}