Question

我正在尝试使用XCODE在iOS中为GPS构建一个库，但它不能用作库，我在客户端应用程序中使用时不调用didUpdateToLocation，但它作为应用程序正常运行。我没有得到我犯错的地方。

这是我的应用程序端代码，我已导入库代码

 - (void)viewDidLoad
 {
   [super viewDidLoad];
   LocLibrary *mFunctions = [[LocLibrary alloc] init];//Creating a object
   [mFunctions startGps];// Calling library method 
 }

以下是我的LocLibrary.h

@interface LocLibrary : NSObject <CLLocationManagerDelegate>
{
CLLocationManager *locMgr;
int latitude,longitude;
}

-(void)startGps;

@property (strong, nonatomic) CLLocationManager *locMgr;
@property (strong, nonatomic) CLLocation *currentLocation;
@end

以下是LocLibarry.m代码，didUpdateLocation方法无法正常工作

 -(void)startGps
  {
  NSLog(@"getGps");
  locMgr = [[CLLocationManager alloc] init];
  NSLog(@"getGps1");
  locMgr.delegate = self;
  locMgr.distanceFilter=kCLDistanceFilterNone;
  locMgr.desiredAccuracy = kCLLocationAccuracyBest;
  [locMgr startUpdatingLocation];//Upto this working, it is not calling below code
  }

 - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { //This method not working
     self.currentLocation = newLocation;
     NSLog(@"Success");
     if(newLocation.horizontalAccuracy <= 100.0f)
     { 
      [locMgr stopUpdatingLocation];
      NSLog(@"Stopped");
     }
   }

Answer 1

检查您正在创建viewDidLoad对象的LocLibrary2方法中的以下行，并将其分配给LocLibrary。

   LocLibrary *mFunctions = [[LocLibrary2 alloc] init];//Creating a object

在iOS GPS库中未调用didUpdateToLocation

1 个答案: