Sie müssen die Push-Benachrichtigung von Pubnub nicht abonnieren. Veröffentlichen Sie die Nachricht einfach im pubnub-Kanal des Nutzers und aktivieren Sie die Push-Benachrichtigung auf Android für diesen bestimmten Kanal. Sie erhalten die Push-Benachrichtigung an dem Ort, an dem Sie GCM-Benachrichtigungen erhalten. Für die Ex-lassen der Kanal 410 So auf Android Seite,
Pubnub.enablePushNotificationsForChannel("410");
In Ihrem GCMListenerService schreiben Sie Nachrichten empfangen können.
Falls Sie nicht GCM verwenden,
Auf Android-Seite schreiben,
public void subscribe() {
String[] channels = {PrefUtils.getUserId(context) + "", ChatUtils.getDeliveryChannel(PrefUtils.getUserId(context)), ChatUtils.getReadChannel(PrefUtils.getUserId(context))};
try {
this.getPubnubInstance().subscribe(channels, new Callback() {
@Override
public void successCallback(String channel, Object message) {
super.successCallback(channel, message);
if (PubnubWrapper.this.onPubnubMessageReceiveListener != null)
PubnubWrapper.this.onPubnubMessageReceiveListener.onMessageReceived(channel, message);
}
@Override
public void connectCallback(String channel, Object message) {
super.connectCallback(channel, message);
}
@Override
public void reconnectCallback(String channel, Object message) {
super.reconnectCallback(channel, message);
}
@Override
public void disconnectCallback(String channel, Object message) {
super.disconnectCallback(channel, message);
}
@Override
public void errorCallback(String channel, PubnubError error) {
super.errorCallback(channel, error);
}
});
} catch (PubnubException e) {
e.printStackTrace();
}
}
Sie Mitteilung innerhalb der Rückrufe des successCallback Verfahren empfangen kann. Aber Sie müssen sicherstellen, dass eine Pubnub-Instanz ausgeführt wird, was in Android schmerzhaft ist.
Ich habe ein vollwertiges Chat-Modul mit Pubnub implementiert. Wenn die App im Vordergrund ist, verwende ich die subscription-Methode von Pubnub und nicht oush-Benachrichtigungen, da sie schneller sind. Im Hintergrund melde ich mich von Kanälen ab und aktiviere Push-Benachrichtigungen. Wie folgt aus:
public void subscribeAndDisablePush(String gcm_token) {
String[] channels = {PrefUtils.getUserId(context) + "", ChatUtils.getDeliveryChannel(PrefUtils.getUserId(context)), ChatUtils.getReadChannel(PrefUtils.getUserId(context))};
getPubnubInstance().disablePushNotificationsOnChannels(channels, gcm_token);
try {
getPubnubInstance().subscribe(channels, new Callback() {
@Override
public void successCallback(String channel, Object message) {
super.successCallback(channel, message);
}
});
} catch (PubnubException e) {
e.printStackTrace();
}
}
public void unsubscribeAndEnablePush(String gcm_token) {
String[] channels = {PrefUtils.getUserId(context) + "", ChatUtils.getDeliveryChannel(PrefUtils.getUserId(context)), ChatUtils.getReadChannel(PrefUtils.getUserId(context))};
getPubnubInstance().enablePushNotificationsOnChannels(channels, gcm_token, new Callback() {
@Override
public void successCallback(String channel, Object message) {
super.successCallback(channel, message);
Log.e("Subscribed", "YES");
}
@Override
public void errorCallback(String channel, PubnubError error) {
super.errorCallback(channel, error);
Log.e("Subscribed", "No");
}
});
getPubnubInstance().unsubscribe(channels);
}
Inside My Anwendungsklasse mache ich das:
Foreground.init(this).addListener(new Foreground.Listener() {
@Override
public void onBecameForeground() {
PubnubWrapper.getInstance().subscribeAndDisablePushNotifications();
}
@Override
public void onBecameBackground() {
PubnubWrapper.getInstance().unsubscribeAndEnablePushNotifications();
}
}
});
Und ja, das ist Foreground.java:
public class Foreground implements Application.ActivityLifecycleCallbacks {
public static final long CHECK_DELAY = 500;
public static final String TAG = Foreground.class.getName();
public interface Listener {
public void onBecameForeground();
public void onBecameBackground();
}
private static Foreground instance;
private boolean foreground = false, paused = true;
private Handler handler = new Handler();
private List<Listener> listeners = new CopyOnWriteArrayList<Listener>();
private Runnable check;
/**
* Its not strictly necessary to use this method - _usually_ invoking
* get with a Context gives us a path to retrieve the Application and
* initialise, but sometimes (e.g. in test harness) the ApplicationContext
* is != the Application, and the docs make no guarantees.
*
* @param application
* @return an initialised Foreground instance
*/
public static Foreground init(Application application){
if (instance == null) {
instance = new Foreground();
application.registerActivityLifecycleCallbacks(instance);
}
return instance;
}
public static Foreground get(Application application){
if (instance == null) {
init(application);
}
return instance;
}
public static Foreground get(Context ctx){
if (instance == null) {
Context appCtx = ctx.getApplicationContext();
if (appCtx instanceof Application) {
init((Application)appCtx);
}
throw new IllegalStateException(
"Foreground is not initialised and " +
"cannot obtain the Application object");
}
return instance;
}
public static Foreground get(){
if (instance == null) {
throw new IllegalStateException(
"Foreground is not initialised - invoke " +
"at least once with parameterised init/get");
}
return instance;
}
public boolean isForeground(){
return foreground;
}
public boolean isBackground(){
return !foreground;
}
public void addListener(Listener listener){
listeners.add(listener);
}
public void removeListener(Listener listener){
listeners.remove(listener);
}
@Override
public void onActivityResumed(Activity activity) {
paused = false;
boolean wasBackground = !foreground;
foreground = true;
if (check != null)
handler.removeCallbacks(check);
if (wasBackground){
Log.i(TAG, "went foreground");
for (Listener l : listeners) {
try {
l.onBecameForeground();
} catch (Exception exc) {
Log.e(TAG, "Listener threw exception!", exc);
}
}
} else {
Log.i(TAG, "still foreground");
}
}
@Override
public void onActivityPaused(Activity activity) {
paused = true;
if (check != null)
handler.removeCallbacks(check);
handler.postDelayed(check = new Runnable(){
@Override
public void run() {
if (foreground && paused) {
foreground = false;
Log.i(TAG, "went background");
for (Listener l : listeners) {
try {
l.onBecameBackground();
} catch (Exception exc) {
Log.e(TAG, "Listener threw exception!", exc);
}
}
} else {
Log.i(TAG, "still foreground");
}
}
}, CHECK_DELAY);
}
@Override
public void onActivityCreated(Activity activity, Bundle savedInstanceState) {}
@Override
public void onActivityStarted(Activity activity) {}
@Override
public void onActivityStopped(Activity activity) {}
@Override
public void onActivitySaveInstanceState(Activity activity, Bundle outState) {}
@Override
public void onActivityDestroyed(Activity activity) {}
}
Und ja Pubnub PHP SDK unterstützt Veröffentlichungsnachricht. – Embydextrous