单击按钮更改片段
Change Fragment on button click
我正在尝试在单击按钮时更改片段。但是什么也没发生,我不知道问题是在按钮点击上还是在我尝试更改片段时..
我有一个 navigationDrawer,当我点击第 3 个部分时,我将 ActivityMain 的片段更改为另一个代码(情况 3):
public void onSectionAttached(int number) {
android.app.Fragment fragment;
android.app.FragmentManager fragmentManager;
switch (number) {
case 1:
mTitle = getString(R.string.inicio);
break;
case 2:
mTitle = getString(R.string.crafteos);
fragment = new crafteos();
fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.container, fragment).commit();
break;
case 3:
mTitle = getString(R.string.v_pro);
fragment = new Conexion();
fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.container, fragment).commit();
break;
}
}
它工作正常,然后在 Conexion() 片段中我有两个带有 id 的按钮:btconectar 和 btRegistro。当我单击 "btconectar" 按钮时,我想将实际片段更改为 LogIn() 片段,但它不起作用。我的代码:
fragment_conexion.xml:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:background="@color/Blanco"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" tools:context="com.barwill94.wikicraft.Conexion">
<!-- TODO: Update blank fragment layout -->
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<Button
android:layout_width="200dp"
android:layout_height="200dp"
android:gravity="center"
android:id="@+id/BTConectarse"
android:layout_gravity="center_horizontal"
android:layout_marginTop="10dp"
android:text="@string/iniciar_sesion"/>
<Button
android:layout_width="200dp"
android:id="@+id/BTRegistro"
android:layout_height="200dp"
android:gravity="center"
android:layout_gravity="center_horizontal"
android:layout_marginTop="10dp"
android:text="@string/registrarme"/>
</LinearLayout>
</ScrollView>
</FrameLayout>
Conexion.java(片段):
public class Conexion extends Fragment {
Button btconectar, btregistrarse;
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private OnFragmentInteractionListener mListener;
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment Conexion.
*/
// TODO: Rename and change types and number of parameters
public static Conexion newInstance(String param1, String param2) {
Conexion fragment = new Conexion();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
public Conexion() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View myInflatedView = inflater.inflate(R.layout.fragment_conexion, container, false);
btconectar = (Button) myInflatedView.findViewById(R.id.BTConectarse);
btregistrarse = (Button) myInflatedView.findViewById(R.id.BTRegistro);
btconectar.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Fragment newFragment = new LogIn();
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(R.id.container, newFragment);
transaction.addToBackStack(null);
transaction.commit();
}
});
return inflater.inflate(R.layout.fragment_conexion, container, false);
}
// 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;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
public void onFragmentInteraction(Uri uri);
}
}
你必须returnmyInflatedView
return myInflatedView
代替
return inflater.inflate(R.layout.fragment_conexion, container, false);
inflate return一个新的 View 实例,并且您将点击侦听器附加到 myInflatedView 的组件。
您的 onCreateView 方法有问题。您设置的 return 不同视图。在这个方法的最后你 return
return inflater.inflate(R.layout.fragment_conexion, container, false);
改为:
return myInflatedView;
我正在尝试在单击按钮时更改片段。但是什么也没发生,我不知道问题是在按钮点击上还是在我尝试更改片段时.. 我有一个 navigationDrawer,当我点击第 3 个部分时,我将 ActivityMain 的片段更改为另一个代码(情况 3):
public void onSectionAttached(int number) {
android.app.Fragment fragment;
android.app.FragmentManager fragmentManager;
switch (number) {
case 1:
mTitle = getString(R.string.inicio);
break;
case 2:
mTitle = getString(R.string.crafteos);
fragment = new crafteos();
fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.container, fragment).commit();
break;
case 3:
mTitle = getString(R.string.v_pro);
fragment = new Conexion();
fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.container, fragment).commit();
break;
}
}
它工作正常,然后在 Conexion() 片段中我有两个带有 id 的按钮:btconectar 和 btRegistro。当我单击 "btconectar" 按钮时,我想将实际片段更改为 LogIn() 片段,但它不起作用。我的代码:
fragment_conexion.xml:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:background="@color/Blanco"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" tools:context="com.barwill94.wikicraft.Conexion">
<!-- TODO: Update blank fragment layout -->
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<Button
android:layout_width="200dp"
android:layout_height="200dp"
android:gravity="center"
android:id="@+id/BTConectarse"
android:layout_gravity="center_horizontal"
android:layout_marginTop="10dp"
android:text="@string/iniciar_sesion"/>
<Button
android:layout_width="200dp"
android:id="@+id/BTRegistro"
android:layout_height="200dp"
android:gravity="center"
android:layout_gravity="center_horizontal"
android:layout_marginTop="10dp"
android:text="@string/registrarme"/>
</LinearLayout>
</ScrollView>
</FrameLayout>
Conexion.java(片段):
public class Conexion extends Fragment {
Button btconectar, btregistrarse;
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private OnFragmentInteractionListener mListener;
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment Conexion.
*/
// TODO: Rename and change types and number of parameters
public static Conexion newInstance(String param1, String param2) {
Conexion fragment = new Conexion();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
public Conexion() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View myInflatedView = inflater.inflate(R.layout.fragment_conexion, container, false);
btconectar = (Button) myInflatedView.findViewById(R.id.BTConectarse);
btregistrarse = (Button) myInflatedView.findViewById(R.id.BTRegistro);
btconectar.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Fragment newFragment = new LogIn();
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(R.id.container, newFragment);
transaction.addToBackStack(null);
transaction.commit();
}
});
return inflater.inflate(R.layout.fragment_conexion, container, false);
}
// 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;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
public void onFragmentInteraction(Uri uri);
}
}
你必须returnmyInflatedView
return myInflatedView
代替
return inflater.inflate(R.layout.fragment_conexion, container, false);
inflate return一个新的 View 实例,并且您将点击侦听器附加到 myInflatedView 的组件。
您的 onCreateView 方法有问题。您设置的 return 不同视图。在这个方法的最后你 return
return inflater.inflate(R.layout.fragment_conexion, container, false);
改为:
return myInflatedView;