組件間通信
-
EventBus實(shí)現(xiàn)通信
在Activity注冊(cè)EventBus,在Activity寫入消息訂閱接收消息理肺，在fragment發(fā)送消息。
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EventBus.getDefault().register(this);
}
@Override
protected void onDestroy() {
super.onDestroy();
EventBus.getDefault().unregister(this);
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onEvent(String message) {
mViewPager.setCurrentItem(0);
mTab.setCurrentTab(0);
}
在fragment發(fā)送消息
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
EventBus.getDefault().post("000000");
}
});
- 接口回調(diào)
在fragment定義接口善镰，并為接口賦值妹萨，Interface = (getActivity())interface.
在Activity實(shí)現(xiàn)接口即可。
ISubmit iSubmit;//定義接口對(duì)象
public interface ISubmit {
void refresh();
}
interfaceBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
iSubmit = (ISubmit) getActivity();
iSubmit.refresh();
}
});
在Activity實(shí)現(xiàn)接口即可
public class MainActivity extends BaseActivity implements MessageFragment.ISubmit {
@Override
public void refresh() {
Toast.makeText(getApplicationContext(), "刷新了", Toast.LENGTH_LONG).show();
}
}
- Handler消息
在Activity創(chuàng)建handler對(duì)象炫欺，創(chuàng)建獲取handler對(duì)象方法乎完，在fragment中將getActivity()強(qiáng)轉(zhuǎn)成當(dāng)前Activity，再獲取Handler對(duì)象品洛，發(fā)送消息树姨。
public Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case 100:
Toast.makeText(getApplicationContext(), "刷新了handler", Toast.LENGTH_LONG).show();
mViewPager.setCurrentItem(0);
mTab.setCurrentTab(0);
break;
}
}
};
public Handler getHandler(){
return handler;
}
在fragment中
handler = ((MainActivity) mActivity).getHandler();
handlerBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Message message = new Message();
message.what = 100;
handler.sendMessage(message);
}
});
