Android studio EventBus一用就闪退

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    findViewById(R.id.two_btn).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            startActivity(new Intent(TwoActivity.this,MainActivity.class));
        }
    });
    EventBus.getDefault().post(new MessageEvent("Hello everyone!"));
}

@Override
public void onStart() {
    super.onStart();
    EventBus.getDefault().register(this);
}

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

}

public class MainActivity extends AppCompatActivity {

private TextView textView;

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

public void initView() {
    textView = findViewById(R.id.text);
    findViewById(R.id.btn).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            startActivity(new Intent(MainActivity.this,TwoActivity.class));
        }
    });
}
@Subscribe
public void onMessageEvent(MessageEvent event){
    Toast.makeText(this, event.message, Toast.LENGTH_SHORT).show();
}

@Override
public void onStart() {
    super.onStart();
    EventBus.getDefault().register(this);
}

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

}

错误信息
05-09 15:13:47.730 2079-2079/? E/memtrack: Couldn't load memtrack module (No such file or directory)
05-09 15:13:47.730 2079-2079/? E/android.os.Debug: failed to load memtrack module: -2
05-09 15:13:47.750 2079-2084/? E/cutils-trace: Error opening trace file: No such file or directory (2)
05-09 15:13:53.010 2095-2095/? E/memtrack: Couldn't load memtrack module (No such file or directory)
05-09 15:13:53.010 2095-2095/? E/android.os.Debug: failed to load memtrack module: -2
05-09 15:13:53.450 2095-2099/? E/cutils-trace: Error opening trace file: No such file or directory (2)
05-09 15:13:53.980 2117-2117/? E/memtrack: Couldn't load memtrack module (No such file or directory)
05-09 15:13:53.980 2117-2117/? E/android.os.Debug: failed to load memtrack module: -2
05-09 15:13:54.000 2117-2121/? E/cutils-trace: Error opening trace file: No such file or directory (2)
05-09 15:13:54.010 2126-2132/? E/dalvikvm: DalvikVM: double-overflow of stack in threadid=4; aborting
05-09 15:13:54.010 2126-2132/? E/dalvikvm: VM aborting
05-09 15:13:54.010 2126-2132/? A/libc: Fatal signal 6 (SIGABRT) at 0x0000084e (code=-6), thread 2132 (JDWP)

https://blog.csdn.net/qq_22256565/article/details/51107561

https://blog.csdn.net/gengqiquan/article/details/52208975
看这里：
需要注意的是，在组件中注册EventBus的话就必须在此组件里有一个标注了 @Subscribe注解的且访问权限为public的方法。

@Subscribe
public void onEvent(CommentChangeEvent event) {
//change view data
}

你是开启了混淆了吗 ，考虑把eventbus的混淆关闭

这个 EventBus.getDefault().register(this);放在onCreate里面试试，