CLBeacon:我如何获得IBeacons的距离? [英] CLBeacon: How can I get the distance from the IBeacons?
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问题描述
如何获取距iBeacons的距离?我可以获取它们的proximity
,但是如何获取CLBeacon的距离呢?我使用过Estimote SDK,它提供了距离值,但是我不知道如何使用CLBeacon来获取它.
How can I get the distance from the iBeacons? I am able to get theirproximity
, but how can I get the distance from the CLBeacon? I have worked with Estimote SDK, which gives the distance value, but I don't know how I can get it with the CLBeacon.
- (void)locationManager:(CLLocationManager *)manager
didRangeBeacons:(NSArray *)beacons inRegion:(CLBeaconRegion *)region{
if (self.beaconRegion) {
if([beacons count] > 0)
{
//get closes beacon and find its major
CLBeacon *beacon = [beacons objectAtIndex:0];
}
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:nil];
/*
* Fill the table with beacon data.
*/
ESTBeacon *beacon = [self.beaconsArray objectAtIndex:indexPath.row];
beacon.delegate=self;
cell.textLabel.text = [NSString stringWithFormat:@"Major: %@, Minor: %@", beacon.major, beacon.minor];
cell.detailTextLabel.text = [NSString stringWithFormat:@"Distance: %.2f", [beacon.distance floatValue]];
[beacon connectToBeacon];
return cell;
}
-(void)beaconConnectionDidSucceeded:(ESTBeacon *)beacon{
[beacon writeBeaconProximityUUID:@"B9407F30-F5F8-466E-AFF9-25556B57FE6D" withCompletion: ^(NSString *value, NSError *error){
if(error){
NSLog(@"Got error here: %@",[error description]);
}else{
NSLog(@"Congratulation! you've got sucessfully written UUID in beacon");
}
}];
}
推荐答案
精度属性应该给您一段距离:
Accuracy property should give you a distance:
CLBeacon *beacon = [beacons objectAtIndex:0];
beacon.accuracy
如果它不起作用,请确保您调用startRangingBeaconsInRegion:
If it doesn't work make sure you call startRangingBeaconsInRegion:
[_locationManager startMonitoringForRegion:region];
[_locationManager startRangingBeaconsInRegion:region];
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