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//依赖
implementation 'org.greenrobot:eventbus:3.0.0'
//写eventbus 自定义的一个类里面写传的参数
package com.example.eventbus;
/**
* date:2018/11/29
* author:霍钲杰(叮咯呤咚呛)
* function:
*/
public class UserEvent {
private String name;
private String password;
public UserEvent() {
}public UserEvent(String name, String password) {
this.name = name;
this.password = password;
}public String getName() {
return name;
}public void setName(String name) {
this.name = name;
}public String getPassword() {
return password;
}public void setPassword(String password) {
this.password = password;
}@Override
public String toString() {
return "UserEvent{" +
"name='" + name + '\'' +
", password='" + password + '\'' +
'}';
}
}
//main
package com.example.eventbus;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {private Button fanhui;
private Button viscidity;
private TextView text;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
//注册订阅者
if(!EventBus.getDefault().isRegistered(this)){
EventBus.getDefault().register(this);
}}private void initView() {
fanhui = (Button) findViewById(R.id.fanhui);
viscidity = (Button) findViewById(R.id.viscidity);
text = (TextView) findViewById(R.id.text);
fanhui.setOnClickListener(this);
viscidity.setOnClickListener(this);
}@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.fanhui:
startActivity(new Intent(MainActivity.this,SendActivity.class));
break;
case R.id.viscidity:EventBus.getDefault().postSticky(new UserEvent("粘性事件", "urgent"));
startActivity(new Intent(MainActivity.this,NianActivity.class));
break;
}
}@Subscribe(threadMode = ThreadMode.MAIN)
public void reception(UserEvent userEvent){
text.setText(userEvent.toString());
}@Override
protected void onDestroy() {
super.onDestroy();
//注销注册
EventBus.getDefault().unregister(this);
}
}
//nian.java
package com.example.eventbus;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
public class NianActivity extends AppCompatActivity implements View.OnClickListener {private Button nian;
private TextView text1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_nian);
initView();
}private void initView() {
nian = (Button) findViewById(R.id.nian);
text1 = (TextView) findViewById(R.id.text1);
nian.setOnClickListener(this);
}@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.nian:
if(!(EventBus.getDefault().isRegistered(NianActivity.this))){
EventBus.getDefault().register(this);
}
break;
}
}@Subscribe(threadMode = ThreadMode.MAIN,sticky = true)
public void reception1(UserEvent userEvent){
text1.setText(userEvent.toString());
}@Override
protected void onStop() {
super.onStop();
EventBus.getDefault().unregister(this);
}
}
//发送事件
package com.example.eventbus;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import org.greenrobot.eventbus.EventBus;
public class SendActivity extends AppCompatActivity implements View.OnClickListener {private Button btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_send);
initView();
}private void initView() {
btn = (Button) findViewById(R.id.btn);
btn.setOnClickListener(this);
}@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn:
//发送事件
EventBus.getDefault().post(new UserEvent("1111","zrj"));
finish();
break;
}
}
}
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