当用户进入已定义的地理围栏区域时，我正在使用意图服务来创建通知。问题是，当我第一次运行应用程序时，它工作正常，我在意向服务上获得待定意图，但几天后（ 2-3），我没有获得意向服务所需的意图。
我不知道为什么它会在几天后停止工作。如果我启动应用程序，它将再次正常启动，但在几天后再次停止。
这是我的活动代码 -
public class MainActivity extends AppCompatActivity implements View.OnClickListener, GoogleApiClient.OnConnectionFailedListener, GoogleApiClient.ConnectionCallbacks, ResultCallback, OnRequestPermissionsResultCallback {
GoogleApiClient mGoogleApiClient;
Location mGeoLocation;
Geofence mGeofence;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.ACCESS_COARSE_LOCATION}, 100);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mGeoLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
mGoogleApiClient.connect();
}
@Override
protected void onStart() {
super.onStart();
}
@Override
protected void onStop() {
mGoogleApiClient.disconnect();
super.onStop();
}
@Override
public void onClick(View v) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
Toast.makeText(MainActivity.this,"",Toast.LENGTH_SHORT);
Log.e("Here I am","Using geofencing in my mobile on 'onConnectionFailed' of main activity");
}
@Override
public void onConnected(@Nullable Bundle bundle) {
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
if (mGeoLocation != null) {
mGeofence = new Geofence.Builder()
.setRequestId("Appstudioz")
.setCircularRegion(mGeoLocation.getLatitude(), mGeoLocation.getLongitude(), 100)
.setExpirationDuration(Geofence.NEVER_EXPIRE)
.setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER | Geofence.GEOFENCE_TRANSITION_EXIT)
.build();
mGoogleApiClient.connect();
Intent intent = new Intent(this, MyIntentServiceGeoFencing.class);
PendingIntent pendingIntent = PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
GeofencingRequest.Builder builder = new GeofencingRequest.Builder();
builder.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER);
builder.addGeofence(mGeofence);
LocationServices.GeofencingApi.addGeofences(mGoogleApiClient, builder.build(), pendingIntent).setResultCallback(this);
}
}
@Override
public void onConnectionSuspended(int i) {
Log.e("Here I am","Using geofencing in my mobile 'onConnectionSuspended' of main activity");
}
@Override
public void onResult(@NonNull Result result) {
Log.e("Here I am","Using geofencing in my mobile 'onResult' of main activity");
}
}
这是我的意图服务 -
public class MyIntentServiceGeoFencing extends IntentService {
public MyIntentServiceGeoFencing() {
super("MyIntentServiceGeoFencing");
}
@Override
protected void onHandleIntent(Intent intent) {
if (intent != null) {
String message="";
Log.e("Here I am","Using geofencing in my mobile 'In intent Service'");
GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent);
if(geofencingEvent.getGeofenceTransition()== Geofence.GEOFENCE_TRANSITION_ENTER)
{
message="Entering Appstudioz";
}
else if(geofencingEvent.getGeofenceTransition()== Geofence.GEOFENCE_TRANSITION_EXIT)
{
message="Exiting Appstudioz";
}
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.cast_ic_notification_small_icon)
.setContentTitle("Geofence Notification")
.setContentText(message);
// Sets an ID for the notification
int mNotificationId = 001;
// Gets an instance of the NotificationManager service
NotificationManager mNotifyMgr = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
// Builds the notification and issues it.
mNotifyMgr.notify(mNotificationId, mBuilder.build());
if(message.equals("Entering Appstudioz")) {
((AudioManager) getSystemService(AUDIO_SERVICE)).setRingerMode(AudioManager.RINGER_MODE_VIBRATE);
}
else
{
((AudioManager) getSystemService(AUDIO_SERVICE)).setRingerMode(AudioManager.RINGER_MODE_NORMAL);
}
}
}
}
我找到了解决方案。以下是根据官方谷歌文档，应用程序没有获得Pending Intents的原因 -
1.设备重启。 2.该应用程序已卸载并重新安装。 3.应用程序的数据被清除。 4.Google Play服务数据已清除。 5.该应用已收到GEOFENCE_NOT_AVAILABLE警报。（当Android位置提供商（GPS）关闭时）
在这些事件发生后，您必须重新注册地理围栏。
在我的情况下设备重启和位置提供商（GPS）关闭，是没有获得待定意图的原因。
当您终止应用程序时，服务将停止运行，因此，您可以使用广播接收器来解决此问题
public class GeofenceReceiver extends BroadcastReceiver
implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
ResultCallback<Status>{
GoogleApiClient mGoogleApiClient;
PendingIntent mGeofencePendingIntent ;
Context mContext;
@Override
public void onReceive(Context context, Intent intent) {
mContext = context;
mGoogleApiClient = new GoogleApiClient.Builder(mContext)
.addOnConnectionFailedListener(this)
.addConnectionCallbacks(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
@Override
public void onConnected(@Nullable Bundle bundle) {
try {
LocationServices.GeofencingApi.addGeofences(
mGoogleApiClient,
// The GeofenceRequest object.
getGeofencingRequest(),
getGeofencePendingIntent()
).setResultCallback(this); // Result processed in onResult().
} catch (SecurityException securityException) {
Log.i(getClass().getSimpleName(),securityException.getMessage());
}
}
// Catch exception generated if the app does not use ACCESS_FINE_LOCATION permission.
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
/**
* Runs when the result of calling addGeofences() and removeGeofences() becomes available.
* Either method can complete successfully or with an error.
*
* Since this activity implements the {@link ResultCallback} interface, we are required to
* define this method.
*
* @param status The Status returned through a PendingIntent when addGeofences() or
* removeGeofences() get called.
*/
@Override
public void onResult(@NonNull Status status) {
if (status.isSuccess()) {
Log.i(getClass().getSimpleName(),"Success");
} else {
// Get the status code for the error and log it using a user-friendly message.
Log.i(getClass().getSimpleName(),getErrorString(status.getStatusCode()));
}
}
private GeofencingRequest getGeofencingRequest() {
GeofencingRequest.Builder builder = new GeofencingRequest.Builder();
builder.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER | GeofencingRequest.INITIAL_TRIGGER_DWELL);
builder.addGeofences(getGeofecne());
return builder.build();
}
private List<Geofence> getGeofecne(){
List<Geofence> mGeofenceList = new ArrayList<>();
//add one object
mGeofenceList.add(new Geofence.Builder()
// Set the request ID of the geofence. This is a string to identify this
// geofence.
.setRequestId("key")
// Set the circular region of this geofence.
.setCircularRegion(
25.768466, //lat
47.567625, //long
50) // radios
// Set the expiration duration of the geofence. This geofence gets automatically
// removed after this period of time.
//1000 millis * 60 sec * 5 min
.setExpirationDuration(1000 * 60 * 5)
// Set the transition types of interest. Alerts are only generated for these
// transition. We track entry and exit transitions in this sample.
.setTransitionTypes(
Geofence.GEOFENCE_TRANSITION_DWELL)
//it's must to set time in millis with dwell transition
.setLoiteringDelay(3000)
// Create the geofence.
.build());
return mGeofenceList;
}
private PendingIntent getGeofencePendingIntent() {
// Reuse the PendingIntent if we already have it.
if (mGeofencePendingIntent != null) {
return mGeofencePendingIntent;
}
Intent intent = new Intent(mContext, GeofenceTransitionsIntentService.class);
return PendingIntent.getService(mContext, 0, intent, PendingIntent.
FLAG_UPDATE_CURRENT);
}
}
在这里你的通知服务
public class GeofenceTransitionsIntentService extends IntentService {
protected static final String TAG = "GeofenceTransitionsIS";
/**
* This constructor is required, and calls the super IntentService(String)
* constructor with the name for a worker thread.
*/
public GeofenceTransitionsIntentService() {
// Use the TAG to name the worker thread.
super(TAG);
}
/**
* Handles incoming intents.
* @param intent sent by Location Services. This Intent is provided to Location
* Services (inside a PendingIntent) when addGeofences() is called.
*/
@Override
protected void onHandleIntent(Intent intent) {
GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent);
if (geofencingEvent.hasError()) {
Log.e(TAG, getErrorString(geofencingEvent.getErrorCode()));
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_DWELL) {
// Get the transition details as a String.
String geofenceTransitionDetails = "Discount 10% for you";
// Send notification and log the transition details.
sendNotification(geofenceTransitionDetails);
Log.i(TAG, geofenceTransitionDetails);
} else {
// Log the error.
Log.e(TAG, getString(R.string.geofence_transition_invalid_type + geofenceTransition));
}
}
public static String getErrorString(int errorCode) {
switch (errorCode) {
case GeofenceStatusCodes.GEOFENCE_NOT_AVAILABLE:
return "not Available";
case GeofenceStatusCodes.GEOFENCE_TOO_MANY_GEOFENCES:
return "Too many Geofences";
case GeofenceStatusCodes.GEOFENCE_TOO_MANY_PENDING_INTENTS:
return "Too many Pending Intents";
default:
return "unknown geofence error";
}
}
/**
* 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) {
// 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.common_google_signin_btn_icon_dark_normal)
// In a real app, you may want to use a library like Volley
// to decode the Bitmap.
.setLargeIcon(BitmapFactory.decodeResource(getResources(),
R.drawable.cast_abc_scrubber_primary_mtrl_alpha))
.setColor(Color.RED)
.setContentTitle(notificationDetails)
.setContentText(getString(R.string.geofence_transition_notification_text))
.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());
}
}
有关更多信息，请查看我的回购中有完整的示例