我正在尝试实现添加和监控地理围栏的功能，我认为this tutorial是最好的开始。
我已经完成了所有类似于他们所做的事情，并且它有效但不像我想要的那样。我注意到没有跟踪地理围栏过渡，我实际想要说的是当我进入地理围栏时，没有任何反应，但是当我在地理围栏中启动应用程序时，我得到了一些回应。我还注意到我的GeofenceTransitionsIntentService中没有任何方法被执行，这实际上意味着地理围栏转换细节永远不会被广播到MainActivity。
老实说，这是我第一次尝试实现这种功能，所以我真的不知道这个问题的原因是什么。如果您有任何想法，请回复，我将不胜感激。
这是我到目前为止所做的事情
我的AndroidManifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="at.at.tuwien.hci.hciss2015">
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
...
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<!-- activities -->
<service android:name="at.at.tuwien.hci.hciss2015.util.GeofenceTransitionsIntentService" />
</application>
My GeofenceTransitionsIntentService.java
public class GeofenceTransitionsIntentService extends IntentService {
protected static final String TAG = GeofenceTransitionsIntentService.class.getSimpleName();
public GeofenceTransitionsIntentService() {
super(TAG);
}
@Override
public void onCreate() {
super.onCreate();
Log.e(TAG, "init GeofenceTransitionsIntentService");
}
@Override
protected void onHandleIntent(Intent intent) {
GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent);
if (geofencingEvent.hasError()) {
Log.e(TAG, "geofencing event error");
return;
}
// Get the transition type.
int geofenceTransition = geofencingEvent.getGeofenceTransition();
// 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(
this,
geofenceTransition,
triggeringGeofences
);
Log.e(TAG, geofenceTransitionDetails);
// Send notification and log the transition details.
sendNotification(geofenceTransitionDetails);
Log.i(TAG, geofenceTransitionDetails);
} else {
Log.e(TAG, "geofence transition invalid type");
}
}
private String getGeofenceTransitionDetails(
Context context,
int geofenceTransition,
List<Geofence> triggeringGeofences) {
String geofenceTransitionString = getTransitionString(geofenceTransition);
// Get the Ids of each geofence that was triggered.
ArrayList triggeringGeofencesIdsList = new ArrayList();
for (Geofence geofence : triggeringGeofences) {
triggeringGeofencesIdsList.add(geofence.getRequestId());
}
String triggeringGeofencesIdsString = TextUtils.join(", ", triggeringGeofencesIdsList);
return geofenceTransitionString + ": " + triggeringGeofencesIdsString;
}
private void sendNotification(String notificationDetails) {
// 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.setContentTitle(notificationDetails)
.setContentText("Click notification to return to app")
.setContentIntent(notificationPendingIntent);
// Dismiss notification once the user touches it.
builder.setAutoCancel(true);
// Get an instance of the Notification manager
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// Issue the notification
mNotificationManager.notify(0, builder.build());
}
private String getTransitionString(int transitionType) {
switch (transitionType) {
case Geofence.GEOFENCE_TRANSITION_ENTER:
return "transition - enter";
case Geofence.GEOFENCE_TRANSITION_EXIT:
return "transition - exit";
default:
return "unknown transition";
}
}
}
我的主要活动
public class MainActivity extends FragmentActivity implements
ConnectionCallbacks, OnConnectionFailedListener, ResultCallback<Status> {
protected GoogleApiClient mGoogleApiClient;
protected ArrayList<Geofence> mGeofenceList;
private PendingIntent mGeofencePendingIntent;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
....
mGeofenceList = new ArrayList<Geofence>();
mGeofencePendingIntent = null;
populateGeofenceList();
buildGoogleApiClient();
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
private GeofencingRequest getGeofencingRequest() {
GeofencingRequest.Builder builder = new GeofencingRequest.Builder();
builder.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER);
builder.addGeofences(mGeofenceList);
return builder.build();
}
private PendingIntent getGeofencePendingIntent() {
if (mGeofencePendingIntent != null) {
return mGeofencePendingIntent;
}
Intent intent = new Intent(this, GeofenceTransitionsIntentService.class);
return PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}
public void populateGeofenceList() {
mGeofenceList.add(new Geofence.Builder()
.setRequestId("1")
.setCircularRegion(48.178454, 16.369699, 10)
.setExpirationDuration(Geofence.NEVER_EXPIRE)
.setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER)
.build());
mGeofenceList.add(new Geofence.Builder()
.setRequestId("2")
.setCircularRegion(48.17755, 16.369114, 10)
.setExpirationDuration(Geofence.NEVER_EXPIRE)
.setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER)
.build());
}
@Override
protected void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
@Override
protected void onStop() {
super.onStop();
LocationServices.GeofencingApi.removeGeofences(
mGoogleApiClient,
getGeofencePendingIntent()
).setResultCallback(this);
if (mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}
@Override
public void onConnected(Bundle bundle) {
Location myLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
initCamera(myLocation);
LocationServices.GeofencingApi.addGeofences(
mGoogleApiClient,
getGeofencingRequest(),
getGeofencePendingIntent()
).setResultCallback(this);
}
@Override
public void onConnectionSuspended(int cause) {
Log.i(TAG, "Connection suspended");
mGoogleApiClient.connect();
}
@Override
public void onConnectionFailed(ConnectionResult result) {
Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + result.getErrorCode());
}
@Override
public void onResult(Status status) {
if (status.isSuccess()) {
Toast.makeText(this, "status: " + status.getStatus(),Toast.LENGTH_SHORT).show();
} else {
Log.e(TAG, "something is wrong");
}
}
}