Android EventBus框架的使用(二)

ListFragment 中创建列表

/**
* Created by yangtianrui on 16-7-23.
* 注册EventBus
*/
public class ItemListFragment extends ListFragment {

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EventBus.getDefault().register(this);
}

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
new Thread() {
@Override
public void run() {
try {
sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
// 模拟延时,在后台发送数据
EventBus.getDefault().post(new Event.ItemEvent(Item.ITEMS));
}

}.start();
}

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return super.onCreateView(inflater, container, savedInstanceState);
}

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

/**
* 在主线程中订阅事件
*/
@Subscribe(threadMode = ThreadMode.MainThread)
public void onEventSetAdapter(Event.ItemEvent event) {
setListAdapter(new ArrayAdapter<>(getActivity()
, android.R.layout.simple_list_item_1, android.R.id.text1, event.getmList()));
}

/**
* 发送位置信息
*/
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
// 点击时发送事件
EventBus.getDefault().post(getListView().getItemAtPosition(position));
}
}

DetailFragement中接收ListFragment post过来的事件

/**
* Created by yangtianrui on 16-7-23.
*/
public class ItemDetailFragment extends Fragment {

private TextView mTvText;

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_detail, container, false);
mTvText = (TextView) root.findViewById(R.id.id_tv_text);
return root;
}

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EventBus.getDefault().register(this);
}

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

@Subscribe(threadMode = ThreadMode.MainThread)
public void onEventSetText(Item item) {
String text = item.content;
mTvText.setText(text);
}
}