Eventbus传值

原理:eventbus中,传值的页面直接进行传值 ,无论是activity还是fragment都能应用
接受值的页面中对eventbus进行绑定和解绑
1.依赖
implementation ‘org.greenrobot:eventbus:3.0.0’

代码如下:这个是接受值的页面

public class MainActivity extends AppCompatActivity {

    /**
     * Hello World!
     */
    private TextView mEventtext;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();

        //绑定 eventbus.getdefalut
        EventBus.getDefault().register(this);

        mEventtext.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(MainActivity.this,Main2Activity.class));
            }
        });


    }

   //写一个方法
    @Subscribe
    public void GetData(Bean bean){
Toast.makeText(this,bean.getName(),Toast.LENGTH_LONG).show();

    }
    private void initView() {
        mEventtext = (TextView) findViewById(R.id.eventtext);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
       EventBus.getDefault().unregister(this);
    }
}

传值页面

public class Main2Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);

        findViewById(R.id.buttons).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                EventBus.getDefault().post(new Bean("哈哈哈"));
                finish();
            }
        });
    }
}