在Android中使用AltbeaconLibrary无法检测（监视）Ibeacon

Question

我有一个android应用程序。我的目的是使用AltBeacon库检测Ibeacons。我使用了来自AltBeacon Library站点链接的监视示例代码：（http://AltBeacon.github.io/android-beacon-library/samples.html）。但我检测不到任何Ibeacon。也无法获得任何关于检测到任何信标的日志。

我的清单文件如下所示：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.ibeaconscanner.ibeaconproject.ibeaconproject" >

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-feature android:name="android.hardware.bluetooth_le" android:required="true"/>
    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

public class MainActivity extends Activity implements BeaconConsumer {
    protected static final String TAG = "MyApp";
    private BeaconManager beaconManager;
    private static final int PERMISSION_REQUEST_COARSE_LOCATION = 1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (this.checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                final AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setTitle("This app needs location acces");
                builder.setMessage("Please grat location acces so this app can detect beacons");
                builder.setPositiveButton(android.R.string.ok, null);
                builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
                    @Override
                    public void onDismiss(DialogInterface dialogInterface) {
                        requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, PERMISSION_REQUEST_COARSE_LOCATION);
                    }
                });
            }
        }

        setContentView(R.layout.activity_main);
        beaconManager = BeaconManager.getInstanceForApplication(this);
        beaconManager.bind(this);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        beaconManager.unbind(this);
    }

    @Override
    public void onBeaconServiceConnect() {
        beaconManager.setMonitorNotifier(new MonitorNotifier() {
            @Override
            public void didEnterRegion(Region region) {
                Log.d(TAG, "I just saw an beacon for the first time!");
            }

            @Override
            public void didExitRegion(Region region) {
                Log.d(TAG, "I no longer see an beacon");
            }

            @Override
            public void didDetermineStateForRegion(int state, Region region) {
                Log.d(TAG, "I have just switched from seeing/not seeing beacons: " + state);
            }
        });

        try {
            beaconManager.startMonitoringBeaconsInRegion(new Region("myMonitoringUniqueId", null, null, null));
        } catch (RemoteException e) {
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode,String permissions[], int[] grantResults) {
        switch (requestCode) {
            case PERMISSION_REQUEST_COARSE_LOCATION: {
                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    Log.d(TAG, "coarse location permission granted");
                } else {
                    final AlertDialog.Builder builder = new AlertDialog.Builder(this);
                    builder.setTitle("Functionality limited");
                    builder.setMessage("Since location access has not been granted, this app will not be able to discover beacons when in the background.");
                    builder.setPositiveButton(android.R.string.ok, null);
                    builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
                        @Override
                        public void onDismiss(DialogInterface dialogInterface) {

                        }
                    }
                    );
                    builder.show();
                }
                return;
            }
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

Answer 1

几个小贴士：

>

确保您可以使用现成的信标检测应用程序如Locate来检测您的信标。如果看不到信标，那么可能是硬件问题。

默认情况下，该库只检测发送AltBeacon格式的信标。如果使用专有的信标类型，则需要调用beaconmanager.getbeaconparsers().add（new BeaconParser().setbeaconlayout（“**put LAYOUT EXPRESSION here**”））；为信标类型添加布局。

如果上述方法没有帮助，可以尝试在应用程序中添加日志记录（如onbeaconserviceConnect())，并报告哪些方法被调用，哪些没有被调用。