传递消息--第三方开源--EventBus的简单使用

 EventBus下载地址：https://github.com/greenrobot/EventBus 

MyEvent:

package com.zzw.testeventbus;

public class MyEvent {
    public int id;
    public String content;
    
    public MyEvent() {
        super();
        
    }

    @Override
    public String toString() {
        return "MyEvent [id=" + id + ", content=" + content + "]";
    }
    
}

MainActivity：

package com.zzw.testeventbus;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
import de.greenrobot.event.EventBus;

public class MainActivity extends Activity {
    TextView tv;
    public static final String TAG = "MainActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tv = (TextView) findViewById(R.id.tv);

        EventBus.getDefault().register(this);

        findViewById(R.id.bt).setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, EventService.class);
                startService(intent);
            }
        });
    }
    // Main线程，这个与Android UI线程密切相关，可以在里面设置UI值，不要阻塞它！
    public void onEventMainThread(MyEvent event) {
        Log.d(TAG + "--" + "onEventMainThread", event.toString());
        tv.setText(event.content);
        int id = event.id % 3;
        if (id == 0) {
            tv.setTextColor(Color.RED);
        } else if (id == 1) {
            tv.setTextColor(Color.GREEN);
        } else if (id == 2) {
            tv.setTextColor(Color.BLUE);
        }
    }

    // 后台线程中接收处理
    public void onEventBackgroundThread(MyEvent event) {
        Log.e(TAG + "--" + "onEventBackgroundThread", event.toString());
    }

    // 异步线程中接收处理
    public void onEventAsync(MyEvent event) {
        Log.i(TAG + "--" + "onEventAsync", event.toString());
    }

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

EventService:

package com.zzw.testeventbus;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.SystemClock;
import de.greenrobot.event.EventBus;

public class EventService extends Service {

    @Override
    public void onCreate() {

        super.onCreate();
    }

    private void task() {
        new Thread(new Runnable() {

            @Override
            public void run() {
                for (int i = 1; i <= 100; i++) {
                    MyEvent event = new MyEvent();
                    event.id = i;
                    event.content = "傻逼" + i;
                    EventBus.getDefault().post(event);
                    SystemClock.sleep(1000);
                }
            }
        }).start();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        task();
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

}