public class SampleComponent extends Fragment
{@Overridepublic void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);EventBus.getDefault().register(this);}public void onEventMainThread(param){}public void onEventPostThread(param){}public void onEventBackgroundThread(param){}public void onEventAsync(param){}@Overridepublic void onDestroy(){super.onDestroy();EventBus.getDefault().unregister(this);}
}

public static EventBus getDefault() {if(defaultInstance == null) {Class var0 = EventBus.class;synchronized(EventBus.class) {if(defaultInstance == null) {defaultInstance = new EventBus();}}}return defaultInstance;
}

public void register(Object subscriber) {register(subscriber, DEFAULT_METHOD_NAME, false, 0);
}
public void register(Object subscriber, int priority) {register(subscriber, DEFAULT_METHOD_NAME, false, priority);
}
public void registerSticky(Object subscriber) {register(subscriber, DEFAULT_METHOD_NAME, true, 0);
}
public void registerSticky(Object subscriber, int priority) {register(subscriber, DEFAULT_METHOD_NAME, true, priority);
}

private synchronized void register(Object subscriber, String methodName, boolean sticky, int priority) {List<SubscriberMethod> subscriberMethods = subscriberMethodFinder.findSubscriberMethods(subscriber.getClass(),methodName);for (SubscriberMethod subscriberMethod : subscriberMethods) {subscribe(subscriber, subscriberMethod, sticky, priority);}
}

List<SubscriberMethod> subscriberMethods = subscriberMethodFinder.findSubscriberMethods(subscriber.getClass(), methodName);

List<SubscriberMethod> findSubscriberMethods(Class<?> subscriberClass, String eventMethodName) {String key = subscriberClass.getName() + '.' + eventMethodName;List<SubscriberMethod> subscriberMethods;synchronized (methodCache) {subscriberMethods = methodCache.get(key);}if (subscriberMethods != null) {return subscriberMethods;}subscriberMethods = new ArrayList<SubscriberMethod>();Class<?> clazz = subscriberClass;HashSet<String> eventTypesFound = new HashSet<String>();StringBuilder methodKeyBuilder = new StringBuilder();while (clazz != null) {String name = clazz.getName();if (name.startsWith("java.") || name.startsWith("javax.") || name.startsWith("android.")) {// Skip system classes, this just degrades performance  break;}// Starting with EventBus 2.2 we enforced methods to be public (might change with annotations again)  Method[] methods = clazz.getMethods();for (Method method : methods) {String methodName = method.getName();if (methodName.startsWith(eventMethodName)) {int modifiers = method.getModifiers();if ((modifiers & Modifier.PUBLIC) != 0 && (modifiers & MODIFIERS_IGNORE) == 0) {Class<?>[] parameterTypes = method.getParameterTypes();if (parameterTypes.length == 1) {String modifierString = methodName.substring(eventMethodName.length());ThreadMode threadMode;if (modifierString.length() == 0) {threadMode = ThreadMode.PostThread;} else if (modifierString.equals("MainThread")) {threadMode = ThreadMode.MainThread;} else if (modifierString.equals("BackgroundThread")) {threadMode = ThreadMode.BackgroundThread;} else if (modifierString.equals("Async")) {threadMode = ThreadMode.Async;} else {if (skipMethodVerificationForClasses.containsKey(clazz)) {continue;} else {throw new EventBusException("Illegal onEvent method, check for typos: " + method);}}Class<?> eventType = parameterTypes[0];methodKeyBuilder.setLength(0);methodKeyBuilder.append(methodName);methodKeyBuilder.append('>').append(eventType.getName());String methodKey = methodKeyBuilder.toString();if (eventTypesFound.add(methodKey)) {// Only add if not already found in a sub class  subscriberMethods.add(new SubscriberMethod(method, threadMode, eventType));}}} else if (!skipMethodVerificationForClasses.containsKey(clazz)) {Log.d(EventBus.TAG, "Skipping method (not public, static or abstract): " + clazz + "."+ methodName);}}}clazz = clazz.getSuperclass();}if (subscriberMethods.isEmpty()) {throw new EventBusException("Subscriber " + subscriberClass + " has no public methods called "+ eventMethodName);} else {synchronized (methodCache) {methodCache.put(key, subscriberMethods);}return subscriberMethods;}
}

for (SubscriberMethod subscriberMethod : subscriberMethods) {subscribe(subscriber, subscriberMethod, sticky, priority);
}

// Must be called in synchronized block
private void subscribe(Object subscriber, SubscriberMethod subscriberMethod, boolean sticky, int priority) {subscribed = true;Class<?> eventType = subscriberMethod.eventType;CopyOnWriteArrayList<Subscription> subscriptions = subscriptionsByEventType.get(eventType);Subscription newSubscription = new Subscription(subscriber, subscriberMethod, priority);if (subscriptions == null) {subscriptions = new CopyOnWriteArrayList<Subscription>();subscriptionsByEventType.put(eventType, subscriptions);} else {for (Subscription subscription : subscriptions) {if (subscription.equals(newSubscription)) {throw new EventBusException("Subscriber " + subscriber.getClass() + " already registered to event "+ eventType);}}}// Starting with EventBus 2.2 we enforced methods to be public (might change with annotations again)  // subscriberMethod.method.setAccessible(true);  int size = subscriptions.size();for (int i = 0; i <= size; i++) {if (i == size || newSubscription.priority > subscriptions.get(i).priority) {subscriptions.add(i, newSubscription);break;}}List<Class<?>> subscribedEvents = typesBySubscriber.get(subscriber);if (subscribedEvents == null) {subscribedEvents = new ArrayList<Class<?>>();typesBySubscriber.put(subscriber, subscribedEvents);}subscribedEvents.add(eventType);if (sticky) {Object stickyEvent;synchronized (stickyEvents) {stickyEvent = stickyEvents.get(eventType);}if (stickyEvent != null) {// If the subscriber is trying to abort the event, it will fail (event is not tracked in posting state)  // --> Strange corner case, which we don't take care of here.  postToSubscription(newSubscription, stickyEvent, Looper.getMainLooper() == Looper.myLooper());}}
}

** Posts the given event to the event bus. */
public void post(Object event) {PostingThreadState postingState = currentPostingThreadState.get();List<Object> eventQueue = postingState.eventQueue;eventQueue.add(event);if (postingState.isPosting) {return;} else {postingState.isMainThread = Looper.getMainLooper() == Looper.myLooper();postingState.isPosting = true;if (postingState.canceled) {throw new EventBusException("Internal error. Abort state was not reset");}try {while (!eventQueue.isEmpty()) {postSingleEvent(eventQueue.remove(0), postingState);}} finally {postingState.isPosting = false;postingState.isMainThread = false;}}
}

private final ThreadLocal<PostingThreadState> currentPostingThreadState = new ThreadLocal<PostingThreadState>() {@Overrideprotected PostingThreadState initialValue() {return new PostingThreadState();}
}

private void postSingleEvent(Object event, PostingThreadState postingState) throws Error {Class<? extends Object> eventClass = event.getClass();List<Class<?>> eventTypes = findEventTypes(eventClass);boolean subscriptionFound = false;int countTypes = eventTypes.size();for (int h = 0; h < countTypes; h++) {Class<?> clazz = eventTypes.get(h);CopyOnWriteArrayList<Subscription> subscriptions;synchronized (this) {subscriptions = subscriptionsByEventType.get(clazz);}if (subscriptions != null && !subscriptions.isEmpty()) {for (Subscription subscription : subscriptions) {postingState.event = event;postingState.subscription = subscription;boolean aborted = false;try {postToSubscription(subscription, event, postingState.isMainThread);aborted = postingState.canceled;} finally {postingState.event = null;postingState.subscription = null;postingState.canceled = false;}if (aborted) {break;}}subscriptionFound = true;}}if (!subscriptionFound) {Log.d(TAG, "No subscribers registered for event " + eventClass);if (eventClass != NoSubscriberEvent.class && eventClass != SubscriberExceptionEvent.class) {post(new NoSubscriberEvent(this, event));}}
}

private void postToSubscription(Subscription subscription, Object event, boolean isMainThread) {switch (subscription.subscriberMethod.threadMode) {case PostThread:invokeSubscriber(subscription, event);break;case MainThread:if (isMainThread) {invokeSubscriber(subscription, event);} else {mainThreadPoster.enqueue(subscription, event);}break;case BackgroundThread:if (isMainThread) {backgroundPoster.enqueue(subscription, event);} else {invokeSubscriber(subscription, event);}break;case Async:asyncPoster.enqueue(subscription, event);break;default:throw new IllegalStateException("Unknown thread mode: " + subscription.subscriberMethod.threadMode);}
}

void invokeSubscriber(Subscription subscription, Object event) throws Error {subscription.subscriberMethod.method.invoke(subscription.subscriber, event);｝

public void postSticky(Object event) {synchronized (stickyEvents) {stickyEvents.put(event.getClass(), event);}// Should be posted after it is putted, in case the subscriber wants to remove immediately  post(event);
}