我通过添加 sqlite 表中的坐标来制作两个地理围栏。它确实在地图上创建了地理围栏,并且也确实发生了转换。
我的问题是所有转换都会触发相同的广播,这意味着无论我输入什么两个地理围栏,它都会显示相同的通知。
如何获取特定位置的消息?
我已经使用这行代码来获取触发栅栏的 ID,这可以正常工作,但它也提供了不需要的东西,例如经度、纬度和半径。如何从中仅提取ID?
List<Geofence> ab = LocationClient.getTriggeringGeofences(intent);
这是代码的相关部分。
@Override
public void onConnected(Bundle arg0) {
mClient.requestLocationUpdates(mRequest, this);
SQLiteDatabase db = database.getWritableDatabase();
String[] columns = {PromoDatabase.LID,PromoDatabase.lRestuarantID,PromoDatabase.lBranchID,PromoDatabase.Latitude,PromoDatabase.Longitude};
Cursor cursor = db.query(PromoDatabase.LOCATION_TABLE, columns, null, null, null, null, null);
String RestuarantName = null;
while(cursor.moveToNext()) //create the two geofences with with help of sqlite table
{
String LocationID = cursor.getString(0);
String RestuarantID = cursor.getString(1);
double latitude = cursor.getDouble(3);
double longitude = cursor.getDouble(4);
RestuarantName = getData(RestuarantID); //get the restuarant name by giving the RestuarantID
float radius = 800;
// Build a Geofence
Geofence fence = new Geofence.Builder()
.setRequestId(LocationID)
.setCircularRegion(latitude, longitude, radius)
.setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER)
.setExpirationDuration(Geofence.NEVER_EXPIRE)
.build();
mList.add(fence);
googleMap.addMarker( new MarkerOptions()
.position( new LatLng(latitude, longitude) )
.title(RestuarantName+": Fence " + LocationID)
.snippet("Radius: " + radius) ).showInfoWindow();
circleOptions = new CircleOptions()
.center( new LatLng(latitude, longitude) )
.radius( radius )
.fillColor(0x40ff0000)
.strokeColor(Color.TRANSPARENT)
.strokeWidth(2);
googleMap.addCircle(circleOptions);
}
// Method 2: Using Broadcast
Intent intent = new Intent();
intent.setAction(GeofenceEventReceiver.GEOFENCE_EVENTS); // Specify the action, a.k.a. receivers
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.putExtra("Location", "KFC");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
// Send out the Geofence request
mClient.addGeofences(mList, pendingIntent, this);
}
// Broadcast receiver used to receive broadcast sent from the GeofenceIntentService
public class GeofenceEventReceiver extends BroadcastReceiver {
public static final String GEOFENCE_EVENTS = "com.Drogo.proto.GeofenceEvents";
@Override
public void onReceive(Context context, Intent intent) {
String locationInfo = "Arraived at " + intent.getStringExtra("Location");
List<Geofence> BreachedGeofence = LocationClient.getTriggeringGeofences(intent);
Toast.makeText(context, locationInfo + BreachedGeofence, Toast.LENGTH_LONG).show();
notifyMe(context,intent, locationInfo); //this will basically give me a notification through the notification manager.
}