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我很新Fragments，但我已经搜索了很长一段时间的错误，不知道可能会出错。尝试了很多修复我在网上找到，没有工作。错误：错误充气课程片段
错误的调用堆栈的开始位置在下方，但我对这个问题的理解是当我的FollowerListActivity链接到它的XML文件时。在XML文件中，它在分段处抱怨。也许我没有正确处理片段？我从来没有和他们一起工作过，但我紧紧跟随在线教程。
04-15 13:59:18.317 15059-15059/xyz.mydomain.socialmaps E/AndroidRuntime: FATAL EXCEPTION: main
Process: xyz.mydomain.socialmaps, PID: 15059
java.lang.RuntimeException: Unable to start activity ComponentInfo{xyz.mydomain.socialmaps/xyz.mydomain.socialmaps.activities.followersSystem.FollowingListActivity}: android.view.InflateException: Binary XML file line #18: Binary XML file line #18: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.view.InflateException: Binary XML file line #18: Binary XML file line #18: Error inflating class fragment
at android.view.LayoutInflater.inflate(LayoutInflater.java:539)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:276)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:136)
at xyz.mydomain.socialmaps.activities.followersSystem.FollowingListActivity.onCreate(FollowingListActivity.java:41)
我现在试着列出所有相关的文件。对不起，列出这么多，但除了我指出的上述错误，我没有想到可能会是什么问题。
activity_follower_list.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activities.followersSystem.FollowingListActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Follower"
android:id="@+id/follower_button"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"/>
<fragment
class ="xyz.mydomain.socialmaps.fragments.ListOfUsersFragment"
android:id="@+id/list_of_follewrs_fragment"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:layout_below="@+id/follower_button"
android:layout_alignParentStart="true"
android:layout_marginTop="10dp"
android:layout_alignEnd="@+id/follower_button" />
</RelativeLayout>
fragment_list_of_users.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:theme="@style/LoginTheme"
tools:context="xyz.jhughes.socialmaps.fragments.ListOfUsersFragment">
<android.support.v7.widget.RecyclerView
android:id="@+id/rvUsers"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
FollowerListActivity.java
package xyz.mydomain.socialmaps.activities.followersSystem;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;
import objects.Command;
import objects.Response;
import objects.User;
import xyz.mydomain.socialmaps.R;
import xyz.mydomain.socialmaps.enums.TypeOfUserList;
import xyz.mydomain.socialmaps.fragments.ListOfUsersFragment;
import xyz.mydomain.socialmaps.fragments.ListOfUsersFragment.OnFragmentInteractionListener;
import xyz.mydomain.socialmaps.helpers.Alert;
import xyz.mydomain.socialmaps.server.Server;
public class FollowingListActivity extends AppCompatActivity implements ListOfUsersFragment.OnFragmentInteractionListener {
private ListView listOfFollowers;
private ArrayAdapter listOfFollowersAdapter;
private ArrayList<String> followersList = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_follower_list);
Button follower_button = (Button) findViewById(R.id.follower_button);
follower_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(getApplicationContext(), AddNewFollowerActivity.class));
}
});
Fragment newFragment = ListOfUsersFragment.newInstance(TypeOfUserList.FOLLOWING,
getSharedPreferences("xyz.jhughes.socialmaps", MODE_PRIVATE).getString("username", null));
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(R.id.list_of_follewrs_fragment, newFragment);
transaction.addToBackStack(null);
transaction.commit();
}
@Override
public void onFragmentInteraction(String username) {
// TODO
}
}
ListOfUsersFragment.java
package xyz.mydomain.socialmaps.fragments;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Fragment;
// import android.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
import objects.Command;
import objects.Response;
import objects.User;
import xyz.mydomain.socialmaps.R;
import xyz.mydomain.socialmaps.adapters.UsersAdapter;
import xyz.mydomain.socialmaps.enums.TypeOfUserList;
import xyz.mydomain.socialmaps.helpers.Alert;
import xyz.mydomain.socialmaps.server.Server;
/**
* A simple {@link Fragment} subclass.
* Activities that contain this fragment must implement the
* {@link ListOfUsersFragment.OnFragmentInteractionListener} interface
* to handle interaction events.
* Use the {@link ListOfUsersFragment#newInstance} factory method to
* create an instance of this fragment.
*/
public class ListOfUsersFragment extends Fragment {
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "typeOfUserList";
private static final String ARG_PARAM2 = "primaryUsername";
private TypeOfUserList type;
private String primaryUsername;
private OnFragmentInteractionListener mListener;
private ArrayList<User> listOfUsers;
public ListOfUsersFragment() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param type The type of list that should be displayed.
* @return A new instance of fragment ListOfUsersFragment.
*/
public static ListOfUsersFragment newInstance(TypeOfUserList type, String username) {
ListOfUsersFragment fragment = new ListOfUsersFragment();
Bundle args = new Bundle();
switch(type) {
case FOLLOWERS:
args.putInt(ARG_PARAM1, 0);
break;
case FOLLOWING:
args.putInt(ARG_PARAM1, 1);
break;
case NEW_FOLLOWER:
args.putInt(ARG_PARAM1, 2);
break;
}
args.putString(ARG_PARAM2, username);
fragment.setArguments(args);
return fragment;
}
private TypeOfUserList intToType(int i) {
switch(i) {
case 0:
return TypeOfUserList.FOLLOWERS;
case 1:
return TypeOfUserList.FOLLOWING;
case 2:
return TypeOfUserList.NEW_FOLLOWER;
default:
throw new RuntimeException("Improper conversion from int to type.");
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.type = intToType(getArguments().getInt(ARG_PARAM1)); // may throw null pointer, but idc
this.primaryUsername = getArguments().getString(ARG_PARAM2);
switch (this.type) {
case FOLLOWERS:
new GetListOfUsersTask().execute(Command.CommandType.GET_USERS_THAT_FOLLOW_USER);
break;
case FOLLOWING:
new GetListOfUsersTask().execute(Command.CommandType.GET_USERS_THAT_USER_FOLLOWS);
break;
case NEW_FOLLOWER:
new GetListOfUsersTask().execute(Command.CommandType.GET_USERS_THAT_BEGIN_WITH_SUBSTRING);
break;
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_list_of_users, container, false);
}
// TODO: Rename method, update argument and hook method into UI event
public void gotoUserActivity(String username) {
if (mListener != null) {
mListener.onFragmentInteraction(username);
}
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof OnFragmentInteractionListener) {
mListener = (OnFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement OnFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
private void updateListOfUsers(ArrayList<User> listOfUsers) {
RecyclerView rvUsers = (RecyclerView) this.getView().findViewById(R.id.rvUsers);
UsersAdapter adapter = new UsersAdapter(listOfUsers);
rvUsers.setAdapter(adapter);
rvUsers.setLayoutManager(new LinearLayoutManager(this.getContext()));
}
/**
* 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 {
// originally Uri, change back if things are fucked up
void onFragmentInteraction(String username);
}
private class GetListOfUsersTask extends AsyncTask<Command.CommandType, Void, Response> {
protected Response doInBackground(Command.CommandType... commandType) {
User user = new User(null, ListOfUsersFragment.this.primaryUsername, null, null, null, null, null);
Command command = new Command(commandType[0], null, user, null, null);
return Server.sendCommandToServer(command, getContext());
}
protected void onPostExecute(Response response) {
try {
if (response == null)
Alert.networkError(getContext());
else if(!response.isBool())
Alert.generalError(getContext());
else if (response.getListOfUsers().size() == 0)
Alert.createAlertDialog("Follows", "You don't follow anyone. Try following someone!", getContext());
else {
ArrayList<User> users = response.getListOfUsers();
updateListOfUsers(users);
}
} catch (NullPointerException e) {
Alert.generalError(getContext());
}
}
}
}
[在此]（http://stackoverflow.com/questions/4512981/android-view-inflateexception-binary-xml-file-line-12-error-inflating-class）出现在我的首先谷歌搜索。 – randominstanceOfLivingThing