距离位置总是返回结果0 - ios sdk

问题描述：

我已经计算2位置距离如下，结果总是0米。有人可以帮忙吗？距离位置总是返回结果0 - ios sdk

double distance = [self.currentLocation distanceFromLocation:location1]; 
NSLog(@"Distance i meters: %.8f", distance); 
if(distance <30) 
{ 
    NSLog(@"Yeah, this place is inside my circle"); 
} 
else 
{ 
    NSLog(@"Oops!! its too far"); 
}

感谢

开始'self.currentLocation'和'location1'都是非零。如果其中一个是'nil'，'distance'将会是'0'。 – rmaddy

你看到我的答案@ user831098它对你有帮助吗？ –

答

我得到正确的结果与编码如下：通过验证

CLLocation *location1 = [[CLLocation alloc] initWithLatitude:DEFAULT_LAT longitude:DEFAULT_LNG]; 

    CLLocationCoordinate2D annocoord = CLLocationCoordinate2DMake(location1.coordinate.latitude, location1.coordinate.longitude); 
    CLLocationCoordinate2D usercoord = self.locationManager.location.coordinate; 

    CLLocation *loc = [[CLLocation alloc] initWithLatitude:annocoord.latitude longitude:annocoord.longitude]; 
    CLLocation *loc2 = [[CLLocation alloc] initWithLatitude:self.locationManager.location.coordinate.latitude longitude:self.locationManager.location.coordinate.longitude]; 

    NSLog(@"LOC = %f, %f", loc.coordinate.latitude, loc.coordinate.longitude); 
    NSLog(@"LOC2 = %f, %f", loc2.coordinate.latitude, loc2.coordinate.longitude); 

    CLLocationDistance dist = [loc distanceFromLocation:loc2]; 

    NSLog(@"DIST: %f", dist); // Wrong formatting may show wrong value!

答

试试这个代码：使用CLLocationDistance对于GET距离：

CLLocationDistance distance = [self.currentLocation distanceFromLocation:location1]; 
float TotalMile=distance/1609.344;

距离位置总是返回结果0 - ios sdk

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