第三方庫EventBus消息傳遞的使用

我的學習，僅供菜鳥們學習！

 

 

實例：

 

 

 

 

首先添加依賴：

//EventBus依賴
compile 'org.greenrobot:eventbus:3.0.0'
而後建立佈局：

而後建立activity消息類

建立MainActivity

package com.fuicuiedu.xc.eventbus_20170307;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;

public class MainActivity extends AppCompatActivity {

TextView mTv;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

//EventBus在監聽事件模塊完成註冊
EventBus.getDefault().register(this);

mTv = (TextView) findViewById(R.id.main_tv);

findViewById(R.id.mian_btn).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this,SecondActivity.class);
startActivity(intent);
}
});
}

@Subscribe(threadMode = ThreadMode.MAIN)
public void aaa(MessageEvent messageEvent){
String msg = messageEvent.getMsg();
//彈吐司
Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
//更新UI
mTv.setText(msg);
}

@Override
protected void onDestroy() {
super.onDestroy();
//取消訂閱，反註冊
EventBus.getDefault().unregister(this);
}
}

跳轉頁面：

package com.fuicuiedu.xc.eventbus_20170307;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

import org.greenrobot.eventbus.EventBus;

public class SecondActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);

findViewById(R.id.second_btn).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//發送事件
EventBus.getDefault().post(new MessageEvent("面對疾風吧！"));
}
});
}
}

完畢！！！項目名稱