我正在使用GeofencingClient Api。当打开wifi并触发地理围栏转换时，我的应用程序正常工作的问题。 但是在GPS的情况下它不起作用。 我希望服务在后台保持正常工作，并在进入和离开地理围栏设置半径时保持触发地理围栏过渡。
一些示例代码
我调用GeofencingClient的代码
public static void addGeofences() {
mGeofenceList = new ArrayList<>();
populateGeofenceList();
mGeofencingClient = LocationServices.getGeofencingClient(MyApplicationClass.getAppContext());
mGeofencingClient.addGeofences(getGeofencingRequest(), getGeofencePendingIntent())
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
Log.d("Tag", "Test");
}
});
}
此方法称为addGeofence
的代码public class GpsLocationReceiver extends BroadcastReceiver implements LocationListener {
LocationManager locationManager ;
boolean GpsStatus ;
public Context mContext;
@Override
public void onReceive(Context context, Intent intent) {
MainActivity obj = new MainActivity();
locationManager = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
GpsStatus = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if(GpsStatus == true)
{
Toast.makeText(context, "GPS Enabled", Toast.LENGTH_LONG).show();
obj. populateGeofenceList();
obj.mGeofencingClient = LocationServices.getGeofencingClient(context);
obj.addGeofences();
}else {
Toast.makeText(context, "Disabled GPS", Toast.LENGTH_LONG).show();
}
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
@Override
public void onProviderEnabled(String s) {
}
@Override
public void onProviderDisabled(String s) {
}
}
发生此转换的代码
@Override
protected void onHandleIntent(Intent intent) {
GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent);
Context context;
if (geofencingEvent.hasError()) {
String errorMessage = GeofenceErrorMessages.getErrorString(this,
geofencingEvent.getErrorCode());
Log.e(TAG, errorMessage);
return;
}
// Get the transition type.
int geofenceTransition = geofencingEvent.getGeofenceTransition();
//===============================
if (geofenceTransition == 1) {
handler.post(new Runnable() {
@Override
public void run() {
attendenInRecord();
}
});
Log.i(TAG, "Entered");
}
else {
handler.post(new Runnable() {
@Override
public void run() {
attendenOutRecord();
}
});
Log.e(TAG, String.valueOf(geofenceTransition));
}
//===================================
// Test that the reported transition was of interest.
if (geofenceTransition == Geofence.GEOFENCE_TRANSITION_ENTER ||
geofenceTransition == Geofence.GEOFENCE_TRANSITION_EXIT) {
// Get the geofences that were triggered. A single event can trigger multiple geofences.
List<Geofence> triggeringGeofences = geofencingEvent.getTriggeringGeofences();
// Get the transition details as a String.
String geofenceTransitionDetails = getGeofenceTransitionDetails(geofenceTransition,
triggeringGeofences);
// Send notification and log the transition details.
sendNotification(geofenceTransitionDetails);
Log.i(TAG, geofenceTransitionDetails);
if(geofenceTransition==Geofence.GEOFENCE_TRANSITION_ENTER){
Log.i(TAG, geofenceTransitionDetails);
}
} else {
// Log the error.
Log.e(TAG, getString(R.string.geofence_transition_invalid_type, geofenceTransition));
}
}
/**
* Gets transition details and returns them as a formatted string.
*
* @param geofenceTransition The ID of the geofence transition.
* @param triggeringGeofences The geofence(s) triggered.
* @return The transition details formatted as String.
*/
private String getGeofenceTransitionDetails(
int geofenceTransition,
List<Geofence> triggeringGeofences) {
String geofenceTransitionString = getTransitionString(geofenceTransition);
// Get the Ids of each geofence that was triggered.
ArrayList<String> triggeringGeofencesIdsList = new ArrayList<>();
for (Geofence geofence : triggeringGeofences) {
triggeringGeofencesIdsList.add(geofence.getRequestId());
}
String triggeringGeofencesIdsString = TextUtils.join(", ", triggeringGeofencesIdsList);
return geofenceTransitionString + ": " + triggeringGeofencesIdsString;
}
/**
* Posts a notification in the notification bar when a transition is detected.
* If the user clicks the notification, control goes to the MainActivity.
*/
private void sendNotification(String notificationDetails) {
// Get an instance of the Notification manager
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// Android O requires a Notification Channel.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
CharSequence name = getString(R.string.app_name);
// Create the channel for the notification
NotificationChannel mChannel =
new NotificationChannel(CHANNEL_ID, name, NotificationManager.IMPORTANCE_DEFAULT);
// Set the Notification Channel for the Notification Manager.
mNotificationManager.createNotificationChannel(mChannel);
}
// Create an explicit content Intent that starts the main Activity.
Intent notificationIntent = new Intent(getApplicationContext(), MainActivity.class);
// Construct a task stack.
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
// Add the main Activity to the task stack as the parent.
stackBuilder.addParentStack(MainActivity.class);
// Push the content Intent onto the stack.
stackBuilder.addNextIntent(notificationIntent);
// Get a PendingIntent containing the entire back stack.
PendingIntent notificationPendingIntent =
stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
// Get a notification builder that's compatible with platform versions >= 4
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
// Define the notification settings.
builder.setSmallIcon(R.drawable.point)
// In a real app, you may want to use a library like Volley
// to decode the Bitmap.
.setLargeIcon(BitmapFactory.decodeResource(getResources(),
R.drawable.point))
.setColor(Color.RED)
.setContentTitle(notificationDetails)
.setContentText(getString(R.string.geofence_transition_notification_text))
.setContentIntent(notificationPendingIntent);
// Set the Channel ID for Android O.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
builder.setChannelId(CHANNEL_ID); // Channel ID
}
// Dismiss notification once the user touches it.
builder.setAutoCancel(true);
// Issue the notification
mNotificationManager.notify(0, builder.build());
}
/**
* Maps geofence transition types to their human-readable equivalents.
*
* @param transitionType A transition type constant defined in Geofence
* @return A String indicating the type of transition
*/
private String getTransitionString(int transitionType) {
switch (transitionType) {
case Geofence.GEOFENCE_TRANSITION_ENTER:
return getString(R.string.geofence_transition_entered);
case Geofence.GEOFENCE_TRANSITION_EXIT:
return getString(R.string.geofence_transition_exited);
default:
return getString(R.string.unknown_geofence_transition);
}
}
答案 0 :(得分：1)
尝试使用GPS请求精确定位。我发现当使用粗略位置时，gps栅栏不会被触发，但是使用wifi，他们就会知道你在一定的范围内。
据我所知，当google发布wifiRTT时，融合位置将有助于明年1米。无论哪种方式，您都需要请求包含粗略位置的精确位置。