EventBus最简单的使用，

packagecom.angeldevil.eventbusdemo;importandroid.content.Intent;importandroid.graphics.Color;importandroid.os.Bundle;importandroid.support.v4.app.FragmentActivity;importandroid.text.SpannableStringBuilder;importandroid.text.Spanned;importandroid.text.style.ForegroundColorSpan;importandroid.view.View;importandroid.widget.TextView;importde.greenrobot.event.EventBus;/****@ClassName:MainActivity*@Description:TODO*@date2016年5月31日下午5:19:20*介绍博客：http://blog.csdn.net/u013424496/article/details/51547003*/publicclassMainActivityextendsFragmentActivity{publicstaticintnum=0;privateTextViewtvNum;@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tvNum=(TextView)findViewById(R.id.num);//初始化EventEventBus.getDefault().register(this);}publicvoidonClick(Viewview){switch(view.getId()){caseR.id.btn:startActivity(newIntent(this,UpActivity.class));break;caseR.id.btnTwo:startActivity(newIntent(this,DownActivity.class));break;default:break;}}/**接收到事件后更新详情,post()传入的是Integer型*/publicvoidonEventMainThread(Integeri){//SpannableStringBuilder用法见http://blog.csdn.net/u013424496/article/details/51351541SpannableStringBuilderss=newSpannableStringBuilder(i+"onEventMainThread(inti)");ss.setSpan(newForegroundColorSpan(Color.RED),0,1,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);tvNum.setText(ss);}/**接收到事件后更新详情,post()传入的是String型*/publicvoidonEventMainThread(Stringi){tvNum.setText(i);DownActivity.setBtn("呵呵，你会变么");}@OverrideprotectedvoidonDestroy(){super.onDestroy();EventBus.getDefault().unregister(this);}} <无> .CodeEntity .code_pieces ul.piece_anchor{width:25px;position:absolute;top:25px;left:-30px;z-index:1000;}.CodeEntity .code_pieces ul.piece_anchor li{width:25px;background: #efe;margin-bottom:2px;}.CodeEntity .code_pieces ul.piece_anchor li{border-left:3px #40AA63 solid;border-right:3px #efe solid;}.CodeEntity .code_pieces ul.piece_anchor li:hover{border-right:3px #40AA63 solid;border-left:3px #efe solid;}.CodeEntity .code_pieces ul.piece_anchor li a{color: #333;padding: 3px 10px;}.CodeEntity .code_pieces .jump_to_code{visibility:hidden;position:relative;}.CodeEntity .code_pieces .code_piece:hover .jump_to_code{visibility:visible;}.CodeEntity .code_pieces .code_piece:hover .jump_to_code a{text-decoration:none;}.CodeEntity .code_pieces h2 i{float:right;font-style:normal;font-weight:normal;}.CodeEntity .code_pieces h2 i a{font-size:9pt;background: #FFFFFF;color:#00A;padding: 2px 5px;text-decoration:none;}