RxJava的使用,教你四步搞定RxBus.

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<strong><span style="font-size: 24px;"> 教你</span><span style="font-size:32px;color:#ff0000;">四步搞定RxBus.</span></strong>

<strong><span style="font-size:32px;color:#ff0000;"></span></strong>

1,在你的工程中添加依赖

dependencies {    compile fileTree(include: ['*.jar'], dir: 'libs')    testCompile 'junit:junit:4.12'    compile 'com.android.support:appcompat-v7:23.3.0'   <span style="color:#ff0000;"> <em>compile 'io.reactivex:rxjava:1.1.9'</em></span>}

在你的项目中添加Rxbus.java工具类,方便使用RxJava

<span style="font-size:18px;">import rx.Observable;import rx.subjects.PublishSubject;import rx.subjects.SerializedSubject;import rx.subjects.Subject; public class RxBus {    private RxBus() {}    private static class SingleHolder {        public static RxBus mRxBus = new RxBus();    }    public static RxBus getInstance() {        return SingleHolder.mRxBus;    }    private final Subject<Object, Object> _bus = new SerializedSubject<>(PublishSubject.create());    public void send(Object o) {        _bus.onNext(o);    }    public Observable<Object> toObserverable() {        return _bus;    }}</span>

3,接下来就可以使用了

在需要的地方首先订阅.最后别忘了解除订阅.

<span style="font-size:18px;">package com.example.jiang_yan.rxbus;import android.app.Activity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.TextView;import rx.Subscription;import rx.functions.Action1;/** * Created by jiang_yan on 2016/8/25. */public class B extends Activity{    private Subscription mSubscribe;    private TextView tv;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.b);        tv = (TextView) findViewById(R.id.tv_b);       //订阅        subscribeRxBus();    }/**</span>

<span style="font-size:18px;">订阅</span>

<span style="font-size:18px;">****/    private void subscribeRxBus() {        mSubscribe = RxBus.getInstance().toObserverable().subscribe(new Action1<Object>() {            @Override            public void call(Object o) {</span>

<span style="font-size:18px;">//在这里就是收到的发送来的数据                Log.e("RxBus", "call: " + o);                if (o instanceof CharSequence) {                    tv.setText(o.toString());                }            }        });    }    @Override    protected void onDestroy() {        super.onDestroy();        if (mSubscribe != null && !mSubscribe.isUnsubscribed()) {            mSubscribe.unsubscribe();        }    }}</span>

4,发送数据(就更简单了)

其实就是一行代码

<span style="font-size: 18px;"><strong><span style="color:#ff0000;">RxBus.getInstance().send("要发送的东西");</span></strong></span>

<span style="font-size:18px;">import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.TextView;import rx.Subscription;public class MainActivity extends AppCompatActivity {    private Subscription mSubscribe;    Handler mHandler = new Handler();    private TextView tv;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        tv = (TextView) findViewById(R.id.tv);        //跳转到B        tv.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                startActivity(new Intent(MainActivity.this,B.class));            }        });        mHandler.postDelayed(new Runnable() {            @Override            public void run() {              mHandler.postDelayed(this,1000);                RxBus.getInstance().send(System.currentTimeMillis()+"");            }        },1000);    }}</span><strong style="font-size: 24px;"></strong>

完了,就这么简单.你会了吗?

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