Ошибка раздувания фрагмента класса При тестировании фрагмента Действие

Question

Я пытаюсь проверить Activity, которые реализуют Fragment.

Когда я пытаюсь запустить мое приложение я получаю сообщение об ошибке:

Error inflating class fragment

Ive прочитал это происходит, если вы расширяете Activity вместо FragmentActivity в главном Activity, но я наследовать правильные вещи в своей деятельности сам. В чем может быть проблема?

моя активность:

package apps.radwin.zxingprojectfragmenttwo; 

import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentActivity; 
import android.support.v4.app.FragmentManager; 
import android.view.View; 

public class MainActivity extends FragmentActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
    } 

    public void selectFrag(View view) { 
     Fragment objFragment = new FragmentOne(); 
     FragmentManager fragmentManager = getSupportFragmentManager(); 
     fragmentManager.beginTransaction() 
      .replace(R.id.fragment_Two_Id, objFragment) 
      .commit(); 
    } 
} 

активность Компоновка:

<?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" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context="apps.radwin.zxingprojectfragmenttwo.MainActivity"> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Hello World!" 
     android:id="@+id/textView6" /> 


    <fragment 
     android:id="@+id/fragment_One_Id" 
     android:name="apps.radwin.zxingprojectfragmenttwo.FragmentOne" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     tools:layout="@layout/fragment_fragment_one" 
     android:layout_below="@+id/fragment_Two_Id" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentStart="true" /> 


    <fragment 
     android:id="@+id/fragment_Two_Id" 
     android:name="apps.radwin.zxingprojectfragmenttwo.FragmentTwo" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     tools:layout="@layout/fragment_fragment_two" 
     android:layout_below="@+id/textView6" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentStart="true" /> 

    <Button 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Activity Button Change First" 
     android:id="@+id/button2" 
     android:onClick="selectFrag" 
     android:layout_below="@+id/fragment_One_Id" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentStart="true" /> 

    <Button 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Activity Button Change Second" 
     android:id="@+id/button1" 
     android:onClick="selectFrag" 
     android:layout_below="@+id/button2" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentStart="true" /> 


</RelativeLayout> 

Полный Трассировка стека:

FATAL EXCEPTION: main 
Process: apps.radwin.zxingprojectfragmenttwo, PID: 23530 
java.lang.RuntimeException: Unable to start activity ComponentInfo { 
    apps.radwin.zxingprojectfragmenttwo/apps.radwin.zxingprojectfragmenttwo.MainActivity 
}: android.view.InflateException: Binary XML file line #19: Binary XML file line # 19: Error inflating class fragment 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 3253) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: 3349) 
at android.app.ActivityThread.access$1100(ActivityThread.java: 221) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java: 1794) 
at android.os.Handler.dispatchMessage(Handler.java: 102) 
at android.os.Looper.loop(Looper.java: 158) 
at android.app.ActivityThread.main(ActivityThread.java: 7224) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 1230) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java: 1120) 
Caused by: android.view.InflateException: Binary XML file line #19: Binary XML file line # 19: Error inflating class fragment 
at android.view.LayoutInflater.inflate(LayoutInflater.java: 551) 
at android.view.LayoutInflater.inflate(LayoutInflater.java: 429) 
at android.view.LayoutInflater.inflate(LayoutInflater.java: 380) 
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java: 474) 
at android.app.Activity.setContentView(Activity.java: 2387) 
at apps.radwin.zxingprojectfragmenttwo.MainActivity.onCreate(MainActivity.java: 15) 
at android.app.Activity.performCreate(Activity.java: 6876) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: 1135) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 3206) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: 3349)  
at android.app.ActivityThread.access$1100(ActivityThread.java: 221)  
at android.app.ActivityThread$H.handleMessage(ActivityThread.java: 1794)  
at android.os.Handler.dispatchMessage(Handler.java: 102)  
at android.os.Looper.loop(Looper.java: 158)  
at android.app.ActivityThread.main(ActivityThread.java: 7224)  
at java.lang.reflect.Method.invoke(Native Method)  
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 1230)  
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java: 1120)  
Caused by: android.view.InflateException: Binary XML file line #19: Error inflating class fragment 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:794) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:716) 
at android.view.LayoutInflater.rInflate(LayoutInflater.java:847) 
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:810) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:527) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:429)  
at android.view.LayoutInflater.inflate(LayoutInflater.java:380)  
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:474)  
at android.app.Activity.setContentView(Activity.java:2387)  
at apps.radwin.zxingprojectfragmenttwo.MainActivity.onCreate(MainActivity.java:15)  
at android.app.Activity.performCreate(Activity.java:6876)  
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135)  
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206)  
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349)  
at android.app.ActivityThread.access$1100(ActivityThread.java:221)  
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)  
at android.os.Handler.dispatchMessage(Handler.java:102)  
at android.os.Looper.loop(Looper.java:158)  
at android.app.ActivityThread.main(ActivityThread.java:7224)  
at java.lang.reflect.Method.invoke(Native Method)  
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)  
Caused by: java.lang.RuntimeException: apps.radwin.zxingprojectfragmenttwo.MainActivity@44cf550 must implement OnFragmentInteractionListener 
at apps.radwin.zxingprojectfragmenttwo.FragmentOne.onAttach(FragmentOne.java:83) 
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1019) 
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1230) 
at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1332) 
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2288) 
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:120) 
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:356) 
at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31) 
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:79) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:766) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:716)  
at android.view.LayoutInflater.rInflate(LayoutInflater.java:847)  
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:810)  
at android.view.LayoutInflater.inflate(LayoutInflater.java:527)  
at android.view.LayoutInflater.inflate(LayoutInflater.java:429)  
at android.view.LayoutInflater.inflate(LayoutInflater.java:380)  
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:474)  
at android.app.Activity.setContentView(Activity.java:2387)  
at apps.radwin.zxingprojectfragmenttwo.MainActivity.onCreate(MainActivity.java:15)  
at android.app.Activity.performCreate(Activity.java:6876)  
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135)  
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206)  
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349)  
at android.app.ActivityThread.access$1100(ActivityThread.java:221)  
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)  
at android.os.Handler.dispatchMessage(Handler.java:102)  
at android.os.Looper.loop(Looper.java:158)  
at android.app.ActivityThread.main(ActivityThread.java:7224)  
at java.lang.reflect.Method.invoke(Native Method)  
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)  

мой FragmentOne Класс:

package apps.radwin.zxingprojectfragmenttwo; 

import android.content.Context; 
import android.net.Uri; 
import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 


/** 
* A simple {@link Fragment} subclass. 
* Activities that contain this fragment must implement the 
* {@link FragmentOne.OnFragmentInteractionListener} interface 
* to handle interaction events. 
* Use the {@link FragmentOne#newInstance} factory method to 
* create an instance of this fragment. 
*/ 
public class FragmentOne extends Fragment { 
    // 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; 

    public FragmentOne() { 
     // Required empty public constructor 
    } 

    /** 
    * 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 FragmentOne. 
    */ 
    // TODO: Rename and change types and number of parameters 
    public static FragmentOne newInstance(String param1, String param2) { 
     FragmentOne fragment = new FragmentOne(); 
     Bundle args = new Bundle(); 
     args.putString(ARG_PARAM1, param1); 
     args.putString(ARG_PARAM2, param2); 
     fragment.setArguments(args); 
     return fragment; 
    } 

    @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 
     return inflater.inflate(R.layout.fragment_fragment_one, 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 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; 
    } 

    /** 
    * 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 
     void onFragmentInteraction(Uri uri); 
    } 
} 

Answer 1

Проблема заключается в ваших Fragment «ы onAttach():

if (context instanceof OnFragmentInteractionListener) { 
    mListener = (OnFragmentInteractionListener) context; 
} else { 
    throw new RuntimeException(context.toString() 
     + " must implement OnFragmentInteractionListener"); 
} 

Вы проверки, если ContextFragment прикрепляется к (MainActivity в данном случае) реализует OnFragmentInteractionListener, но это не так, поэтому RuntimeException брошен ,

В зависимости от того, что вы хотели бы достичь, либо удалите код из вашего onAttach(), либо внесите свой Activity орудие OnFragmentInteractionListener.