BaseActivity.java

package bigfat.com.rxbusdemo;

import android.os.Bundle;
import android.support.annotation.CallSuper;
import android.support.annotation.CheckResult;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import bigfat.com.rxbusdemo.rxbus.RxBus;
import com.trello.rxlifecycle.ActivityEvent;
import com.trello.rxlifecycle.ActivityLifecycleProvider;
import com.trello.rxlifecycle.RxLifecycle;
import rx.Observable;
import rx.subjects.BehaviorSubject;

/**
 * Created by yueban on 15:06 31/3/16.
 * Email: fbzhh007@gmail.com
 * QQ: 343278606
 */
public class BaseActivity extends AppCompatActivity implements ActivityLifecycleProvider {
    private final BehaviorSubject<ActivityEvent> lifecycleSubject = BehaviorSubject.create();

    protected final Observable<Object> mBus = RxBus
        .toObservable()
        .compose(bindToLifecycle());

    protected final Observable<Object> mBusSticky = RxBus
        .toObservableSticky()
        .compose(bindToLifecycle());

    @Override
    @NonNull
    @CheckResult
    public final Observable<ActivityEvent> lifecycle() {
        return lifecycleSubject.asObservable();
    }

    @Override
    @NonNull
    @CheckResult
    public final <T> Observable.Transformer<T, T> bindUntilEvent(@NonNull ActivityEvent event) {
        return RxLifecycle.bindUntilEvent(lifecycleSubject, event);
    }

    @Override
    @NonNull
    @CheckResult
    public final <T> Observable.Transformer<T, T> bindToLifecycle() {
        return RxLifecycle.bindActivity(lifecycleSubject);
    }

    @Override
    @CallSuper
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        lifecycleSubject.onNext(ActivityEvent.CREATE);
    }

    @Override
    @CallSuper
    protected void onStart() {
        super.onStart();
        lifecycleSubject.onNext(ActivityEvent.START);
    }

    @Override
    @CallSuper
    protected void onResume() {
        super.onResume();
        lifecycleSubject.onNext(ActivityEvent.RESUME);
    }

    @Override
    @CallSuper
    protected void onPause() {
        lifecycleSubject.onNext(ActivityEvent.PAUSE);
        super.onPause();
    }

    @Override
    @CallSuper
    protected void onStop() {
        lifecycleSubject.onNext(ActivityEvent.STOP);
        super.onStop();
    }

    @Override
    @CallSuper
    protected void onDestroy() {
        lifecycleSubject.onNext(ActivityEvent.DESTROY);
        super.onDestroy();
    }
}