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流程：FirstActivity启动EventBusPostActivity，然后EventBusPostActivity向FirstActivity发送EventBus关闭FirstActivity
依赖
implementation 'org.greenrobot:eventbus:3.0.0'
序列化基类
public class BaseEntity implements Serializable {
}
实体类
public class EventBusEntity extends BaseEntity {
public static final int TYPE_EVENT_BUS_POST = 1001;
private int eventType;
private String eventMessage;
public EventBusEntity(int eventType, String eventMessage) {
this.eventType = eventType;
this.eventMessage = eventMessage;
}
public int getEventType() {
return eventType;
}
public void setEventType(int eventType) {
this.eventType = eventType;
}
public String getEventMessage() {
return eventMessage;
}
public void setEventMessage(String eventMessage) {
this.eventMessage = eventMessage;
}
}
FirstActivity
public class FirstActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.act_first);
//注册EventBus
EventBus.getDefault().register(this);
findViewById(R.id.id_btn_post).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivity(new Intent(FirstActivity.this, EventBusPostActivity.class));
}
});
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onEvent(EventBusEntity entity) {
if (entity.getEventType() == EventBusEntity.TYPE_EVENT_BUS_POST) {
String msg = entity.getEventMessage();
Log.i("TAG", "------ post message : " + msg);
finish();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
//注销EventBus
EventBus.getDefault().unregister(this);
}
}
EventBusPostActivity
public class EventBusPostActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.act_event_post);
findViewById(R.id.id_btn_ppp).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
EventBus.getDefault().post(new EventBusEntity(EventBusEntity.TYPE_EVENT_BUS_POST, "finish()"));
}
});
}
}
