註冊地理圍欄

我建立了 GeoFenceObserversationService 單例類。

GeoFenceObserversationService.java ：

public class GeoFenceObserversationService extends Service implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, ResultCallback<Status> {

    protected static final String TAG = "GeoFenceObserversationService";
    protected GoogleApiClient mGoogleApiClient;
    protected ArrayList<Geofence> mGeofenceList;
    private boolean mGeofencesAdded;
    private SharedPreferences mSharedPreferences;
    private static GeoFenceObserversationService mInstant;
    public static GeoFenceObserversationService getInstant(){
        return mInstant;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        mInstant = this;
        mGeofenceList = new ArrayList<Geofence>();
        mSharedPreferences = getSharedPreferences(AppConstants.SHARED_PREFERENCES_NAME, MODE_PRIVATE);
        mGeofencesAdded = mSharedPreferences.getBoolean(AppConstants.GEOFENCES_ADDED_KEY, false);

        buildGoogleApiClient();
    }

    @Override
    public void onDestroy() {
        mGoogleApiClient.disconnect();
        super.onDestroy();
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        return START_STICKY;
    }

    protected void buildGoogleApiClient() {
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
        mGoogleApiClient.connect();
    }

    @Override
    public void onConnected(Bundle connectionHint) {
    }

    @Override
    public void onConnectionFailed(ConnectionResult result) {
    }

    @Override
    public void onConnectionSuspended(int cause) {

    }

    private GeofencingRequest getGeofencingRequest() {

        GeofencingRequest.Builder builder = new GeofencingRequest.Builder();
        builder.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER);
        builder.addGeofences(mGeofenceList);
        return builder.build();
    }

    public void addGeofences() {
            if (!mGoogleApiClient.isConnected()) {
                Toast.makeText(this, getString(R.string.not_connected), Toast.LENGTH_SHORT).show();
                return;
            }

        populateGeofenceList();
        if(!mGeofenceList.isEmpty()){
            try {
                LocationServices.GeofencingApi.addGeofences(mGoogleApiClient, getGeofencingRequest(), getGeofencePendingIntent()).setResultCallback(this);
            } catch (SecurityException securityException) {
                securityException.printStackTrace();
            }
        }

        }

    public void removeGeofences() {
        if (!mGoogleApiClient.isConnected()) {
            Toast.makeText(this, getString(R.string.not_connected), Toast.LENGTH_SHORT).show();
            return;
        }
        try {
            LocationServices.GeofencingApi.removeGeofences(mGoogleApiClient,getGeofencePendingIntent()).setResultCallback(this);
        } catch (SecurityException securityException) {
            securityException.printStackTrace();
        }
    }

    public void onResult(Status status) {

        if (status.isSuccess()) {
            mGeofencesAdded = !mGeofencesAdded;
            SharedPreferences.Editor editor = mSharedPreferences.edit();
            editor.putBoolean(AppConstants.GEOFENCES_ADDED_KEY, mGeofencesAdded);
            editor.apply();
        } else {
            String errorMessage = AppConstants.getErrorString(this,status.getStatusCode());
            Log.i("Geofence", errorMessage);
        }
    }

    private PendingIntent getGeofencePendingIntent() {
        Intent intent = new Intent(this, GeofenceTransitionsIntentService.class);
        return PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    }

    private void populateGeofenceList() {
        mGeofenceList.clear();
        List<GeoFencingResponce> geoFenceList = getGeofencesList;
        if(geoFenceList!=null&&!geoFenceList.isEmpty()){
            for (GeoFencingResponce obj : geoFenceList){
                mGeofenceList.add(obj.getGeofence());
                Log.i(TAG,"Registered Geofences : " + obj.Id+"-"+obj.Name+"-"+obj.Lattitude+"-"+obj.Longitude);
            }
        }
    }
}

AppConstant ：

   public static final String SHARED_PREFERENCES_NAME = PACKAGE_NAME + ".SHARED_PREFERENCES_NAME";
    public static final String GEOFENCES_ADDED_KEY = PACKAGE_NAME + ".GEOFENCES_ADDED_KEY";
    public static final String DETECTED_GEOFENCES = "detected_geofences";
    public static final String DETECTED_BEACONS = "detected_beacons";

    public static String getErrorString(Context context, int errorCode) {
        Resources mResources = context.getResources();
        switch (errorCode) {
            case GeofenceStatusCodes.GEOFENCE_NOT_AVAILABLE:
                return mResources.getString(R.string.geofence_not_available);
            case GeofenceStatusCodes.GEOFENCE_TOO_MANY_GEOFENCES:
                return mResources.getString(R.string.geofence_too_many_geofences);
            case GeofenceStatusCodes.GEOFENCE_TOO_MANY_PENDING_INTENTS:
                return mResources.getString(R.string.geofence_too_many_pending_intents);
            default:
                return mResources.getString(R.string.unknown_geofence_error);
        }
    }

我開始服務的地方？來自 Application 類

• startService(new Intent(getApplicationContext(),GeoFenceObserversationService.class));

我如何註冊 Geofences？

• GeoFenceObserversationService.getInstant().addGeofences();