【第四篇】学习 android 事件总线androidEventbus之发布事件，子线程中接收

发送和接收消息的方式类似其他的发送和接收消息的事件总线一样，不同的点或者应该注意的地方：

1，比如在子线程构造方法里面进行实现总线的注册操作；

2，要想子线程中接收消息的功能执行，必须启动线程。

3，添加tag和不添加tag类似其他。

package com.example.mysimpleeventbus;

import java.util.ArrayList;
import java.util.List;

import org.simple.eventbus.EventBus;
import org.simple.eventbus.Subscriber;
import org.simple.eventbus.ThreadMode;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity implements OnClickListener {

    private Button button;
    private Button ansyBtn;
    private Button ansy1Btn;
    private Button sendListBtn;
    private Button sendToThreadBtn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        // 1 首先注册事件总线
        EventBus.getDefault().register(this);
        MyThread myThread = new MyThread();
        myThread.start();
    }

    private void initView() {
        button = (Button) findViewById(R.id.button);
        ansyBtn = (Button) findViewById(R.id.ansyBtn);
        ansy1Btn = (Button) findViewById(R.id.ansy1Btn);
        sendListBtn = (Button) findViewById(R.id.sendListBtn);
        sendToThreadBtn = (Button) findViewById(R.id.sendToThreadBtn);

        button.setOnClickListener(this);
        ansyBtn.setOnClickListener(this);
        ansy1Btn.setOnClickListener(this);
        sendListBtn.setOnClickListener(this);
        sendToThreadBtn.setOnClickListener(this);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        EventBus.getDefault().unregister(this);
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
        case R.id.button:

            postSticky();

            break;

        case R.id.ansyBtn:

            postAnsy();

            break;
        case R.id.ansy1Btn:

            postAnsyInMainActivity();

            break;
        case R.id.sendListBtn:

            // postListDate();
            postListToOtherActivity();
            break;
        case R.id.sendToThreadBtn:

            postToThread();

            break;
        default:
            break;
        }
    }

    /**
 93      * 发送事件总线到线程里面去接收
 94      */
 95     private void postToThread() { 
 96         EventBus.getDefault().post(new User("soyoungboy", "西安财经学院"),"thread");
 97     }

    class MyThread extends Thread{

        public MyThread() {
            EventBus.getDefault().register(this);
        }

        /**
106          * 接收其他线程发来的消息
107          * @param user
108          */
109         @Subscriber(tag = "thread")
110         private void receiveUser(User user) {
111             Log.i("thread --thread == ", user.toString());
112         }
        @Override
        public void run() {
            super.run();
        }
    }

    private void postListToOtherActivity() {
        List<User> users = new ArrayList<User>();
        User user;
        for (int i = 0; i < 10; i++) {
            user = new User("帅哥" + i, "清华大学");
            users.add(user);
        }

        EventBus.getDefault().postSticky(users);
        gotoOtherActivity();
    }

    /**
     * List数据的传递
     */
    private void postListDate() {
        List<User> users = new ArrayList<User>();
        User user;
        for (int i = 0; i < 10; i++) {
            user = new User("帅哥" + i, "清华大学");
            users.add(user);
        }

        EventBus.getDefault().post(users);
    }

    @Subscriber
    private void reveiveList(List<User> users) {
        for (int i = 0; i < users.size(); i++) {
            Toast.makeText(getApplicationContext(), users.get(i).toString(),
                    Toast.LENGTH_SHORT).show();
        }
    }

    /**
     * Ansy事件传递，多个Activity之间必须postSticky
     */
    private void postAnsy() {
        // 将目标函数执行在异步线程中
        EventBus.getDefault().postSticky(new User("soyoungboy", "西安财经学院"),
                "ansy");
        gotoOtherActivity();
    }

    /**
     * 在本Activity中进行Ansy事件发布操作
     */
    private void postAnsyInMainActivity() {
        EventBus.getDefault().post(new User("soyoungboy", "西安财经学院"), "ansy");
    }

    /**
     * 在本Activity中进行Ansy事件接受操作
     * 
     * @param user
     */
    @Subscriber(tag = "ansy", mode = ThreadMode.ASYNC)
    private void ansy(User user) {
        Log.i("user", user.toString());
        Log.i("ThreadName", Thread.currentThread().getName());
    }

    private void postSticky() {
        // 2 发送Sticky事件
        EventBus.getDefault().postSticky(new User("soyoungboy", "西安财经学院"),
                "soyoungboy");

        gotoOtherActivity();
    }

    private void gotoOtherActivity() {
        // 跳转页面
        Intent intent = new Intent(MainActivity.this, OtherActivity.class);
        startActivity(intent);
    }
}