导包

compile 'io.reactivex.rxjava2:rxjava:2.1.6'
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
compile 'com.jakewharton.rxrelay2:rxrelay:2.0.0'

调用

RxBus.getInstance().send(user);(user为UserModel实例)

register.png

RxBus源码

import com.jakewharton.rxrelay2.PublishRelay;
import com.jakewharton.rxrelay2.Relay;

import java.util.concurrent.ConcurrentHashMap;

import io.reactivex.Observable;
import io.reactivex.Scheduler;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.functions.Action;
import io.reactivex.functions.Consumer;


public class RxBus {

    private Relay<Object> bus = null;
    private static RxBus instance;

    //禁用构造方法
    private RxBus() {
        bus = PublishRelay.create().toSerialized();
    }

    public static RxBus getInstance() {
        if (instance == null) {
            synchronized (RxBus.class) {
                if (instance == null) {
                    instance = new RxBus();
                }
            }
        }
        return instance;
    }

    public void send(Object event) {
        bus.accept(event);
    }

    public <T> Observable<T> toObservable(Class<T> eventType) {
        return bus.ofType(eventType);
    }

    ConcurrentHashMap<Class, Object> mStickMap = new ConcurrentHashMap<>();

    /**
     * 发送rxbus粘性广播
     *
     * @param event
     */
    public void sendSticky(Object event) {
        mStickMap.put(event.getClass(), event);
    }

    /**
     * 消费粘性广播(仅一处消费)
     */
    public <T> void registerStickyJustHere(final Class<T> eventType, Scheduler scheduler, Consumer<T> consumer) {
        T t = (T) mStickMap.get(eventType);
        if (t != null) {
            Observable.just(t).observeOn(scheduler).subscribe(consumer);
            clearSticky(eventType);
        }
    }

    public <T> void registerStickyJustHere(Class<T> eventType, Consumer<T> consumer) {
        registerStickyJustHere(eventType, AndroidSchedulers.mainThread(), consumer);
    }
    /**
     * 消费粘性广播
     */
    public <T> void registerSticky(Class<T> eventType, Scheduler scheduler, final Consumer<T> consumer) {
        T t = (T) mStickMap.get(eventType);
        if (t != null) {
            Observable.just(t).subscribe(consumer);
        }
    }

    public <T> void registerSticky(Class<T> eventType, Consumer<T> consumer) {
        registerSticky(eventType, AndroidSchedulers.mainThread(), consumer);
    }
    public <T> void clearSticky(Class<T> eventType){
        mStickMap.remove(eventType);
    }

    public boolean hasObservers() {
        return bus.hasObservers();
    }

    public <T> Disposable register(Class<T> eventType, Scheduler scheduler, Consumer<T> onNext) {
        return toObservable(eventType).observeOn(scheduler).subscribe(onNext);
    }

    public <T> Disposable register(Class<T> eventType, Scheduler scheduler, Consumer<T> onNext, Consumer onError,
                                   Action onComplete, Consumer onSubscribe) {
        return toObservable(eventType).observeOn(scheduler).subscribe(onNext, onError, onComplete, onSubscribe);
    }

    public <T> Disposable register(Class<T> eventType, Scheduler scheduler, Consumer<T> onNext, Consumer onError,
                                   Action onComplete) {
        return toObservable(eventType).observeOn(scheduler).subscribe(onNext, onError, onComplete);
    }

    public <T> Disposable register(Class<T> eventType, Scheduler scheduler, Consumer<T> onNext, Consumer onError) {
        return toObservable(eventType).observeOn(scheduler).subscribe(onNext, onError);
    }

    public <T> Disposable register(Class<T> eventType, Consumer<T> onNext) {
        return toObservable(eventType).observeOn(AndroidSchedulers.mainThread()).subscribe(onNext);
    }

    public <T> Disposable register(Class<T> eventType, Consumer<T> onNext, Consumer onError,
                                   Action onComplete, Consumer onSubscribe) {
        return toObservable(eventType).observeOn(AndroidSchedulers.mainThread()).subscribe(onNext, onError, onComplete, onSubscribe);
      }

    public <T> Disposable register(Class<T> eventType, Consumer<T> onNext, Consumer onError,
                               Action onComplete) {
        return toObservable(eventType).observeOn(AndroidSchedulers.mainThread()).subscribe(onNext, onError, onComplete);
    }

    public <T> Disposable register(Class<T> eventType, Consumer<T> onNext, Consumer onError) {
        return toObservable(eventType).observeOn(AndroidSchedulers.mainThread()).subscribe(onNext, onError);
    }

    public void unregister(Disposable... disposables) {
        for (Disposable disposable : disposables
                ) {
            if (disposable != null && !disposable.isDisposed()) {
                disposable.dispose();
            }
        }
    }
}