Question

我正在使用Android中的GeoFencing，我一度陷入困境。我的任务是在用户进入/退出由我定义的notification区域时向用户显示Geofence。

这是我的代码：

Activity class

public class TestMapActivity extends FragmentActivity implements    
    OnMarkerDragListener,ConnectionCallbacks, OnConnectionFailedListener,OnAddGeofencesResultListener {

private static GoogleMap map;
private LocationClient mLocationClient;
private PendingIntent mGeofencePendingIntent;
private SimpleGeoFence fence;
private List<Geofence> mGeoList;
private LocationRequest localRequest;
private GeofenceReceiver mBroadcastReceiver;
private IntentFilter mIntentFilter;

@Override
protected void onCreate(Bundle saveInstance)
{
        super.onCreate(saveInstance);
        setContentView(R.layout.activity_map);
        map = ((SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
        map.setOnMarkerDragListener(this);
        CameraPosition INIT =
        new CameraPosition.Builder()
        .target(new LatLng(19.0222, 72.8666))
        .zoom(17.5F)
        .bearing(300F) // orientation
        .tilt( 50F) // viewing angle
        .build();
         map.moveCamera( CameraUpdateFactory.newCameraPosition(INIT) );

 }


   @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        MenuInflater menuInflater = getMenuInflater();
        menuInflater.inflate(R.menu.main, menu);
        return true;
    }

 @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {

        switch (item.getItemId())
        {
            case R.id.add_fence:

            Toast.makeText(TestMapActivity.this, "Add fence is Selected", Toast.LENGTH_LONG).show();

            fence= new SimpleGeoFence();
            fence.toGeofence();
            addMarkerForFence(fence);
            addIntentForFence();
            return true;
            default:
                 return super.onOptionsItemSelected(item);
        }
    }

     public void addMarkerForFence(SimpleGeoFence fence){
     if(fence == null){
         // display an error message and return
        return;
     }


     //Instantiates a new CircleOptions object +  center/radius
     CircleOptions circleOptions = new CircleOptions()
       .center( new LatLng(19.0216, 72.8646 ))
       .radius( 500 )
       .fillColor(0x40ff0000)
       .strokeColor(Color.TRANSPARENT)
       .strokeWidth(2);

     map.addCircle(circleOptions);

     map.addMarker( new MarkerOptions()
       .position( new LatLng(19.0216, 72.8646) )
       .title("Fence " +fence.getId())
       .snippet("Radius: " +fence.getRadius()) ).showInfoWindow();

     // Get back the mutable Circle
     Circle circle = map.addCircle(circleOptions);

 }

     public void addIntentForFence()
 {

     Geofence geoFence= fence.toGeofence();
     mGeoList = new ArrayList<Geofence>();
     mGeoList.add(geoFence);

     mLocationClient = new LocationClient(this, this, this);
     mLocationClient.connect();

    }

   @Override
public void onConnected(Bundle arg0) {
    // TODO Auto-generated method stub

    mGeofencePendingIntent = createRequestPendingIntent(); 

    localRequest = LocationRequest.create();
    localRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
    localRequest.setInterval(5000);

    mLocationClient.addGeofences(mGeoList, mGeofencePendingIntent , this);  
}

    private PendingIntent createRequestPendingIntent() {

    if (null != mGeofencePendingIntent) {

        return mGeofencePendingIntent;

    } else {


        Intent intent = new Intent("com.example.ACTION_RECEIVE_GEOFENCE");
        System.out.println("Intent" +intent);
        //sendBroadcast(intent);
        return PendingIntent.getBroadcast(
                getApplicationContext(),
                0,
                intent,
                PendingIntent.FLAG_UPDATE_CURRENT);
    }
}
} //end oncreate

GeofenceReceiver class

  public class GeofenceReceiver extends BroadcastReceiver
  {
         public Context context;
         Intent broadcastIntent = new Intent();

          @Override
      public void onReceive(Context context, Intent intent) {

           // TODO Auto-generated method stub

             this.context = context;
              broadcastIntent.addCategory("com.example.CATEGORY_LOCATION_SERVICES");        
              String action= intent.getAction();

               if (LocationClient.hasError(intent)) {
                       //do something
                } 
               else 
                {
               handleEnterExit(intent);
                 }
           }

         private void handleEnterExit(Intent intent) {

             int transition = LocationClient.getGeofenceTransition(intent);

              System.out.println("transition" +transition); //getting -1 over here
              if ((transition == Geofence.GEOFENCE_TRANSITION_ENTER)
                || (transition == Geofence.GEOFENCE_TRANSITION_EXIT)) {

                         //send notification over here
             }   

    }

AndroidManifest.xml容器接收器

    <receiver android:name="com.example.GeofenceReceiver" android:exported="false">
    <intent-filter >
        <action android:name="com.example.ACTION_RECEIVE_GEOFENCE"/>
    </intent-filter>
</receiver>

所以基本上我能够看到我的GeoFence被创建但我没有得到同样的通知。

有没有人有解决方案？

Answer 1

只需检查示例代码即可。你采取地理围栏，但你没有提到位置客户端和位置连接，以便谷歌播放服务不连接到客户端，你无法接收通知采取谷歌请求者文件和检查主要活动地理位置添加在列表中，还连接位置客户端希望所以它为你工作

Answer 2

所以从评论中你可以说你可以添加地理围栏，但是你没有收到通知。首先，它看起来好像你已经使用了他们的网站上的android的地理围栏示例代码，你已经改变它，所以它使用接收器而不是服务。对我来说，我做了同样的事情，这似乎不是我的答案正确的解决方案：

1。）遵循google'e地理围栏中相同的步骤/代码：http://developer.android.com/training/location/geofencing.html

2。）因为您要将服务更改为接收者，所以在您的createRequestPendingIntent()方法中是否返回了正确的广播意图？我的意思是你有这条线，但它到达那里？是什么东西回到那里？

return PendingIntent.getBroadcast( mActivity,0,intent, PendingIntent.FLAG_UPDATE_CURRENT);

3.）你的onResume（）中有LocalBroadcastManager.getInstance(this).registerReceiver(mBroadcastReceiver, mIntentFilter);吗？

我会再次关注谷歌的示例项目并确保您正在将服务更改为接收器部分，您应该没问题。

Answer 3

我遇到了同样的问题。我认为这是因为您正在使用应用程序上下文来处理您的未决意图，请尝试使用该活动。

在Android中输入GeoFence时无法显示通知

3 个答案: