package com.blakequ.bluetooth_manager_lib.device;
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import com.blakequ.bluetooth_manager_lib.device.adrecord.AdRecord;
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import com.blakequ.bluetooth_manager_lib.device.ibeacon.IBeaconConstants;
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import com.blakequ.bluetooth_manager_lib.util.ByteUtils;
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/**
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*
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*/
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public final class BeaconUtils {
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private BeaconUtils(){
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// TO AVOID INSTANTIATION
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}
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/**
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* Ascertains whether a Manufacturer Data byte array belongs to a known Beacon type;
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*
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* @param manufacturerData a Bluetooth LE device's raw manufacturerData.
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* @return the {@link BeaconType}
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*/
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public static BeaconType getBeaconType(final byte[] manufacturerData) {
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if (manufacturerData == null || manufacturerData.length == 0) {
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return BeaconType.NOT_A_BEACON;
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}
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if(isIBeacon(manufacturerData)){
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return BeaconType.IBEACON;
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} else {
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return BeaconType.NOT_A_BEACON;
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}
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}
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/**
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* Ascertains whether a {@link com.blakequ.bluetooth_manager_lib.device.BluetoothLeDevice} is an iBeacon;
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*
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* @param device a {@link com.blakequ.bluetooth_manager_lib.device.BluetoothLeDevice} device.
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* @return the {@link BeaconType}
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*/
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public static BeaconType getBeaconType(final BluetoothLeDevice device) {
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final int key = AdRecord.TYPE_MANUFACTURER_SPECIFIC_DATA;
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return getBeaconType(device.getAdRecordStore().getRecordDataAsString(key).getBytes());
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}
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private static boolean isIBeacon(final byte[] manufacturerData){
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// An iBeacon record must be at least 25 chars long
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if (!(manufacturerData.length >= 25)) {
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return false;
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}
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if (ByteUtils.doesArrayBeginWith(manufacturerData, IBeaconConstants.MANUFACTURER_DATA_IBEACON_PREFIX)) {
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return true;
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}
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return false;
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}
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}
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