ALT信标测距功能不起作用

Question

我正在尝试构建一个可以测量附近信标的android应用程序，并获取相关信息，例如UUID和距离信标的距离。我现在面临的问题是，测距功能根本无法检测到单个灯标。我很确定这个功能是正确的，因为我已经下载了另一个类似的演示项目，可以在同一台设备上很好地扫描信标。

应用程序在beaconManager.startRangingBeaconsInRegion（new Region（“myRangingUniqueId”，null，null，null））函数后现在没有任何反应，并且调试器显示线程停留在didRangeBeaconsInRegion函数中，并且信标大小始终0.

我的代码有问题吗？还是因为我的设置或配置不正确？

代码：

package com.example.ma.contextualawarenessapplication; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 

import android.app.Activity; 
import android.os.RemoteException; 
import android.widget.TextView; 

import org.altbeacon.beacon.Beacon; 
import org.altbeacon.beacon.BeaconConsumer; 
import org.altbeacon.beacon.BeaconManager; 
import org.altbeacon.beacon.BeaconParser; 
import org.altbeacon.beacon.RangeNotifier; 
import org.altbeacon.beacon.Region; 

import java.text.SimpleDateFormat; 
import java.util.Collection; 
import java.util.Date; 
import java.util.Locale; 

public class GeofencingActivity extends AppCompatActivity implements  BeaconConsumer { 
protected static final String TAG = "GeofencingActivity"; 
private BeaconManager beaconManager; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_geofencing); 

    beaconManager = BeaconManager.getInstanceForApplication(this); 
    beaconManager.bind(this); 

} 
@Override 
protected void onDestroy() { 
    super.onDestroy(); 
    beaconManager.unbind(this); 
} 
@Override 
protected void onPause() { 
    super.onPause(); 
    if (beaconManager.isBound(this)) beaconManager.setBackgroundMode(true); 
} 
@Override 
protected void onResume() { 
    super.onResume(); 
    if (beaconManager.isBound(this)) beaconManager.setBackgroundMode(false); 
} 

@Override 
public void onBeaconServiceConnect() { 
    beaconManager.setRangeNotifier(new RangeNotifier() { 
     @Override 
     public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) { 
      for (Beacon beacon : beacons) { 
       logToDisplay(getCurrentTimeStamp() + " | Beacon " + beacon.toString() + " is about " + beacon.getDistance() + " meters away."); 
      } 
     /*if (beacons.size() > 0) { 
      EditText editText = (EditText)GeofencingActivity.this 
        .findViewById(R.id.geofencingText); 
      Beacon firstBeacon = beacons.iterator().next(); 
      logToDisplay("The first beacon "+firstBeacon.toString()+" is about "+firstBeacon.getDistance()+" meters away.");   } 
    */} 

    }); 

    try { 
     beaconManager.startRangingBeaconsInRegion(new Region("myRangingUniqueId", null, null, null)); 
    } catch (RemoteException e) { } 
} 
private void logToDisplay(final String line) { 
    runOnUiThread(new Runnable() { 
     public void run() { 
      TextView editText = (TextView)GeofencingActivity.this 
        .findViewById(R.id.geofencingText); 
      editText.append(line+"\n"); 
     } 
    }); 
} 

private static String getCurrentTimeStamp() { 
    Locale locale = new Locale("es", "ES"); 
    SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS", locale); 
    Date now = new Date(); 
    return sdf.format(now); 
} 
} 

的build.gradle：

apply plugin: 'com.android.application' 

android { 
compileSdkVersion 23 
buildToolsVersion "23.0.2" 

defaultConfig { 
    applicationId "com.example.ma.contextualawarenessapplication" 
    minSdkVersion 18 
    targetSdkVersion 23 
    versionCode 1 
    versionName "1.0" 
} 
buildTypes { 
    release { 
     minifyEnabled false 
     proguardFiles getDefaultProguardFile('proguard-android.txt'),  'proguard-rules.pro' 
    } 
} 
} 

dependencies { 
compile fileTree(dir: 'libs', include: ['*.jar']) 
testCompile 'junit:junit:4.12' 
compile 'com.android.support:appcompat-v7:23.1.1' 
compile 'org.altbeacon:android-beacon-library:2+@aar' 
} 

buildscript { 
repositories { 
    jcenter() 
    mavenCentral() 
    flatDir { 
     dirs 'libs' 
    } 
} 
dependencies { 
    classpath 'com.android.tools.build:gradle:2.1.0-alpha5' 

    // NOTE: Do not place your application dependencies here; they belong 
    // in the individual module build.gradle files 
} 
} 

allprojects { 
repositories { 
    jcenter() 
} 
} 

task clean(type: Delete) { 
delete rootProject.buildDir 
} 

Answer 1

有几件事情来检查时，你不能获得与Android Beacon Library检测：

• 确保您的信标发送AltBeacon格式。如果没有，您只需注册一个BeaconParser表达式即可检测Eddystone或专有信标类型，如iBeacon。

• 如果您不确定广告的格式，请尝试使用Locate app，它会告诉您它检测到的格式。

• 如果设备给您提供了故障检测功能，请使用Android 6.0+，请确保您已获得位置权限，如here所述。