content: package cn.trinea.android.demo.eventbus;
  
  import android.os.Bundle;
  import android.os.Handler;
  import android.view.View;
  import android.view.View.OnClickListener;
  import android.widget.Button;
  import android.widget.EditText;
  import android.widget.TextView;
  import cn.trinea.android.demo.eventbus.util.TextUtils;
  import de.greenrobot.event.EventBus;
  
  public class SendStickyEventActivity extends BaseActivity {
  
      private EditText         eventET;
      private Button           sendBtn;
      private TextView         receivedEventTV;
  
      private static final int WAIT_TIME = 2000;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState, R.layout.activity_send_stkcky_event);
  
          initView();
      }
  
      @Override
      protected void onDestroy() {
          super.onDestroy();
      }
  
      private void initView() {
          eventET = (EditText)findViewById(R.id.event_content);
          receivedEventTV = (TextView)findViewById(R.id.receive_event);
          sendBtn = (Button)findViewById(R.id.send_event);
          sendBtn.setOnClickListener(new OnClickListener() {
  
              @Override
              public void onClick(View v) {
                  receivedEventTV.setText("");
                  EventBus.getDefault().postSticky(TextUtils.getHintIfTextIsNull(eventET));
                  sendBtn.setClickable(false);
                  receivedEventTV.setText("Send sticky event success, wait for register after " + WAIT_TIME / 1000
                          + "s\r\n\r\n");
                  new Handler().postDelayed(new Runnable() {
  
                      @Override
                      public void run() {
                          // Register
                          receivedEventTV.setText(receivedEventTV.getText() + "Register sticky success\r\n\r\n");
                          EventBus.getDefault().registerSticky(this);
                      }
  
                      // Receive Event
                      public void onEvent(String event) {
                          receivedEventTV.setText(receivedEventTV.getText() + "OnEvent success:" + event + "\r\n\r\n");
                          sendBtn.setClickable(true);
                          // Unregister
                          EventBus.getDefault().unregister(this);
                          receivedEventTV.setText(receivedEventTV.getText() + "Unregister success");
                      }
                  }, WAIT_TIME);
              }
          });
      }
  }
  