Android Open Source - Android-RxJava Rx Bus Demo_ Bottom3 Fragment

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License

The source code is released under:

Apache License

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Java Source Code

package com.morihacky.android.rxjava.rxbus;
//from   w ww .  j av  a2 s  . c  om
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewCompat;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import butterknife.ButterKnife;
import butterknife.InjectView;
import com.morihacky.android.rxjava.MainActivity;
import com.morihacky.android.rxjava.app.R;
import java.util.List;
import java.util.concurrent.TimeUnit;
import rx.Observable;
import rx.android.schedulers.AndroidSchedulers;
import rx.functions.Action1;
import rx.functions.Func1;
import rx.observables.ConnectableObservable;
import rx.subscriptions.CompositeSubscription;

import static rx.android.observables.AndroidObservable.bindFragment;

public class RxBusDemo_Bottom3Fragment
    extends Fragment {

  private RxBus _rxBus;
  private CompositeSubscription _subscriptions;

  @InjectView(R.id.demo_rxbus_tap_txt) TextView _tapEventTxtShow;
  @InjectView(R.id.demo_rxbus_tap_count) TextView _tapEventCountShow;

  @Override
  public View onCreateView(LayoutInflater inflater,
                           @Nullable ViewGroup container,
                           @Nullable Bundle savedInstanceState) {
    View layout = inflater.inflate(R.layout.fragment_rxbus_bottom, container, false);
    ButterKnife.inject(this, layout);
    return layout;
  }

  @Override
  public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    _rxBus = ((MainActivity) getActivity()).getRxBusSingleton();
  }

  @Override
  public void onStart() {
    super.onStart();
    _subscriptions = new CompositeSubscription();

    ConnectableObservable<Object> tapEventEmitter = _rxBus.toObserverable().publish();

    _subscriptions//
        .add(bindFragment(this, tapEventEmitter)//
                 .subscribe(new Action1<Object>() {
                   @Override
                   public void call(Object event) {
                     if (event instanceof RxBusDemoFragment.TapEvent) {
                       _showTapText();
                     }
                   }
                 }));

    _subscriptions//
        .add(tapEventEmitter.publish(new Func1<Observable<Object>, Observable<List<Object>>>() {
          @Override
          public Observable<List<Object>> call(Observable<Object> stream) {
            return stream.buffer(stream.debounce(1, TimeUnit.SECONDS));
          }
        }).observeOn(AndroidSchedulers.mainThread()).subscribe(new Action1<List<Object>>() {
          @Override
          public void call(List<Object> taps) {
            _showTapCount(taps.size());
          }
        }));

    _subscriptions.add(tapEventEmitter.connect());
  }

  @Override
  public void onStop() {
    super.onStop();
    _subscriptions.clear();
  }

  // -----------------------------------------------------------------------------------
  // Helper to show the text via an animation

  private void _showTapText() {
    _tapEventTxtShow.setVisibility(View.VISIBLE);
    _tapEventTxtShow.setAlpha(1f);
    ViewCompat.animate(_tapEventTxtShow).alphaBy(-1f).setDuration(400);
  }

  private void _showTapCount(int size) {
    _tapEventCountShow.setText(String.valueOf(size));
    _tapEventCountShow.setVisibility(View.VISIBLE);
    _tapEventCountShow.setScaleX(1f);
    _tapEventCountShow.setScaleY(1f);
    ViewCompat.animate(_tapEventCountShow)
        .scaleXBy(-1f)
        .scaleYBy(-1f)
        .setDuration(800)
        .setStartDelay(100);
  }
}

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