Question

我正在使用iBeacon技术，我正在尝试创建一个RangingService，它将每隔五秒钟搜索附近的iBeacons并在我的应用程序的后台运行。以下代码无效。我确定我在某个地方犯了一些愚蠢的错误，但我可以在我的日志文件中看到每5秒就会检查一次Checkpoint 3和4，而从未到达Checkpoints 1和2。因此，没有检测到附近的信标。我对服务或信标没有太多经验，所以我很感激任何帮助，特别是来自@davidgyoung。

如果下面的代码没有完美缩进，请原谅我:)非常感谢能帮助我的人。

import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.RemoteException;
import android.util.Log;
import android.widget.EditText;
import android.widget.Toast;

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

import java.util.Collection;

public class RangingService extends Service implements BeaconConsumer {
private BeaconManager beaconManager = BeaconManager.getInstanceForApplication(this);
Handler handler;
String b = "";

@Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

@Override
public void onStart(Intent intent, int startId) {
    // Let it continue running until it is stopped.
    Log.d("Service", "Started");

    handler = new Handler(){

        @Override
            public void handleMessage(Message msg) {
                // TODO Auto-generated method stub
                super.handleMessage(msg);
                Log.d("Checkpoint", "5 seconds have passed");
            }

        };

        new Thread(new Runnable(){
            public void run() {
                // TODO Auto-generated method stub
                while(true)
                {
                    try {
                        startJob();
                        Log.d("Checkpoint", "Job has started");
                        Thread.sleep(5000);
                        handler.sendEmptyMessage(0);

                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }

                }

            }
        }).start();




        //return START_STICKY;
    }

public void startJob() {
    beaconManager.bind(this);
    Log.d("The first beacon", "Starting job for realzies");
    onBeaconServiceConnect();
}


    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.d("Service", "Ended");
    }

@Override
public void onBeaconServiceConnect() {
    Log.d("Checkpoint3", "Checkpoint3");
    beaconManager.setRangeNotifier(new RangeNotifier() {
        @Override
        public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {

           Log.d("Checkpoint1", "Checkpoint1");
            if (beacons.size() > 0) {
                Log.d("Checkpoint2", "Checkpoint2");
                //EditText editText = (EditText)RangingActivity.this.findViewById(R.id.rangingText);
                Beacon firstBeacon = beacons.iterator().next();
                String a = "The first beacon " + firstBeacon.toString() + " is about " + firstBeacon.getDistance() + " meters away. RSSI = " + firstBeacon.getRssi();
                Log.d("Service", a);
                //logToDisplay(a);
            }
        }

    });

    try {
        beaconManager.startRangingBeaconsInRegion(new Region("myRangingUniqueId", null, null, null));
        Log.d("Checkpoint4", "Checkpoint4");

    } catch (RemoteException e) {   }
 }
}// Update code formatting

主要活动：

public void didEnterRegion(Region arg0) {
    // In this example, this class sends a notification to the user whenever   a Beacon
    // matching a Region (defined above) are first seen.
    Log.d(TAG, "did enter region.");
    startService(new Intent(this, RangingService.class));

}

Answer 1

一些提示：

请勿手动拨打onBeaconServiceConnect();。这是一个回调方法，当信标扫描服务准备好通过调用beaconManager.bind(this);时，由Android Beacon Library调用。如果你自己调用它，你就会失败它的目的，并会引起问题。
您不应该每隔五秒钟调用beaconManager.bind(this); - 只需在服务启动时调用一次。反复调用会导致问题。
确保为您正在使用的信标类型配置Android Beacon Library。默认情况下，它只会检测开源的AltBeacon数据包。如果您使用的是专有信标类型，则需要创建BeaconParser并添加配置库。您可以在Google上搜索“BeaconParser”和您的专有信标类型，以获取正确的代码行来配置库。

iBeacon测距服务不返回任何信标

1 个答案: