Beacons array is empty in didRangeBeaconsInRegion event in ionic ios app - ios

Question

im using ionic native ibeacon library to detect beacons.I can detect beacons with android but when I try in ios ,i always see an empty beacon array.
I tried these things ,but still cant see the beacons in ios (device is iphone 6s plus 11.4.1) (bluetooth service is enabled on device)
I tried both requestWhenInUseAuthorization and also
requestAlwaysAuthorization.
I add NSLocationAlwaysUsageDescription and NSLocationWhenInUseUsageDescription key in info.plist
my code is like this, its working on android device
import { Injectable } from '#angular/core';
import { Platform, Events } from 'ionic-angular';
import { IBeacon } from "#ionic-native/ibeacon";
#Injectable()
export class BeaconProvider {
delegate: any;
region: any;
constructor(
public platform: Platform,
public events: Events,
private iBeacon: IBeacon
) {
this.initialise();
}
initialise(): any {
let promise = new Promise((resolve, reject) => {
if (this.platform.is("cordova")) {
this.iBeacon.requestAlwaysAuthorization();
// ALSO try this one too this.iBeacon.requestWhenInUseAuthorization();
this.delegate = this.iBeacon.Delegate();
this.delegate.didRangeBeaconsInRegion().subscribe(
data => {
this.events.publish("didRangeBeaconsInRegion", data);
//console.log("didRangebeacons__" + JSON.stringify(data)); // empty beacons array
},
error => console.error()
);
this.region = this.iBeacon.BeaconRegion("deskBeacon", "e2c56db5-dffb-48d2-b060-d0f5a71096e0");
this.iBeacon
.startRangingBeaconsInRegion(this.region)
.then(
() => {
resolve(true);
},
error => {
console.error("Failed to begin monitoring: ", error);
resolve(false);
}
);
} else {
resolve(false);
}
});
return promise;
}
}
EDIT
My location services are on ,and I'm using same uuid in ios or android (ionic,same code).By the way I tried to make a iphone as beacon transmitter by an app in market,other iphone can see it as beacon.
And here is the screenshot of beacon scope app

Answer 1

A few things to check on iOS:
Go to settings, location, and check if your app has been granted location permission.
Make sure Bluetooth is turned on
Try a 3rd party beacon scanner like Locate Beacon, configure it with your UUID and make sure it can detect your beacon with the same device.
EDIT: A few more steps
Make sure iOS has Location turned on in Settings (the overall setting, not just for your app) Settings -> Privacy -> Location Services
Since you can detect on Android but not iOS, double check the UUID that you see on Android and make sure it matches exactly what you enter on iOS.
If the UUID in the config matches, but it still won't detect, verify that the beacon is actually sending out an iBeacon frame and not AltBeacon or some format iPhone won't see by default. If you use the Beacon Scope app for Android, it will tell you the frame type.