这里已经提出了这个问题,但是我没有解决我的问题。这里是我的代码如何在片段上实现后退按钮按下设备
public class MyOrders extends Fragment {
View view;
private MyOrders.OnFragmentInteractionListener mListener;
FragmentManager fragmentManager;
Context context;
public MyOrders(){
}
public static MyOrders newInstance(String param1, String param2) {
MyOrders fragment = new MyOrders();
Bundle args = new Bundle();
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);;
context = getActivity();
fragment = new MyOrders();
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
view = inflater.inflate(R.layout.myorders, container, false);
fragmentManager = getFragmentManager();
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
我通过新建 - >片段 - >空白片段
提出在Android Studio中该片段在设备背面底部的报刊,控制将转向另一个片段(加载片段由下面的代码)
public void loadFragment(Fragment fragment,String tag, FragmentManager fragmentManager){
android.support.v4.app.FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.content, fragment);
fragmentTransaction.addToBackStack(tag);
fragmentTransaction.commit();
}
。 请帮我一把。我一整天都试过。
'Fragment'的BackPress就是这样一个**错误的观念**。 BackPress属于容器活动。 –
你可以发布代码 – manjari
我想你可以搜索'android onbackpressed'。询问代码/教程是无关紧要的。 –