Android EventBus（普通事件/粘性事件）详解

本文实例为大家分享了Android EventBus普通事件和粘性事件，供大家参考，具体内容如下

展示效果

添加EventBus导入依赖

compile 'org.greenrobot:eventbus:3.0.0'

主MainActivity方法

public class MainActivity extends AppCompatActivity {
  private Button button_t,button_d;
  private TextView tv_a;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    button_d=(Button)findViewById(R.id.button_d);
    button_d.setText("订阅");
    button_t=(Button)findViewById(R.id.button_t);
    button_t.setText("跳转到Bctivity");
    tv_a=(TextView)findViewById(R.id.tv_a);
    tv_a.setText("欢迎大家观看飞鸟96的博客");
    button_t.setonClickListener(new View.onClickListener() {
      @Override
      public void onClick(View view) {
 startActivity(new Intent(MainActivity.this,MainBctivity.class));
      }
    });
    
    button_d.setonClickListener(new View.onClickListener() {
      @Override
      public void onClick(View view) {
 if(!EventBus.getDefault().isRegistered(MainActivity.this)) {
   EventBus.getDefault().register(MainActivity.this);
 }else{
   Toast.makeText(MainActivity.this, "请勿重复注册事件", Toast.LENGTH_SHORT).show();
 }
      }
    });
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
    
    EventBus.getDefault().unregister(MainActivity.this);
  }
  @Subscribe(threadMode = ThreadMode.MAIN)
  public void onMoonEvent(MessageEvent message){
    tv_a.setText(message.getMessage());
  }
  @Subscribe(sticky = true)
  public void onMoonEvents(MessageEvent message){
    tv_a.setText(message.getMessage());
  }
}

主MainBctivity方法

public class MainBctivity extends AppCompatActivity {
  private Button button_f,button_n;
  private TextView tv_b;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main_bctivity);
    button_f=(Button)findViewById(R.id.button_f);
    button_f.setText("发送事件");
    button_n=(Button)findViewById(R.id.button_n);
    button_n.setText("粘性事件");
    tv_b=(TextView)findViewById(R.id.tv_b);
    tv_b.setText("MainBctivity");
    
    button_f.setonClickListener(new View.onClickListener() {
      @Override
      public void onClick(View view) {
 EventBus.getDefault().post(new MessageEvent("飞鸟96博客祝你用的开心！"));
 finish();
      }
    });
    
    button_n.setonClickListener(new View.onClickListener() {
      @Override
      public void onClick(View view) {
 EventBus.getDefault().postSticky(new MessageEvent("开心开心开开心！！"));
 finish();
      }
    });

  }
}

MessageEvent（事件类）

public class MessageEvent {
  private String message;

  public MessageEvent(String message) {
    this.message = message;
  }

  public MessageEvent() {
  }

  public String getMessage() {
    return message;
  }

  public void setMessage(String message) {
    this.message = message;
  }
}

activity_main（MainActivity的布局）

activity_main_bctivity（MainBctivity的布局）

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。