错误膨胀类片段 - 重复id/illegalargumentexception？

Question

我正在尝试创建一个我正在构建的应用程序从主要活动中获取搜索词,返回结果,然后使结果可以被点击,以便可以从每个结果中查看详细信息.我这样做是通过使用MainActivity,ResultsActivity和PlaceActivity,然后是ListFragmentClickable(扩展ListFragment).如果手机朝向纵向模式,则结果列表应该是可见的,只有在单击结果时才会查看详细信息.如果手机是横向的,则在选择项目时,应在列表右侧弹出详细信息窗口.

在运行时,我收到一个错误,上面写着"错误膨胀类片段".我不知道是什么导致它,我很乐意帮助摆脱它.

我的ListFragmentClickables由我的ResultsActivity调用,它位于:

public class ResultsActivity extends FragmentActivity implements ListFragmentClickable.OnItemSelectedListener{

private ArrayAdapter<String> mAdapter;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_results_view);

    //Receive searchTerm from MainActivity
    Intent intent = getIntent();
    String searchTerm = intent.getStringExtra(MainActivity.SEARCH_TERM);

    mAdapter = new ArrayAdapter<String>(this, R.layout.item_label_list);

    FragmentManager     fm = getSupportFragmentManager();
    FragmentTransaction ft = fm.beginTransaction();

    FactualResponderFragment responder = (FactualResponderFragment) fm.findFragmentByTag("RESTResponder");
    if (responder == null) {
        responder = new FactualResponderFragment();
        ft.add(responder, "RESTResponder");
    }

    Bundle bundle = new Bundle();
    bundle.putString("search_term", searchTerm);
    responder.setArguments(bundle);

    ft.commit();
}

public ArrayAdapter<String> getArrayAdapter() {
    return mAdapter;
}

@Override //creates a DetailFragment when a list item is selected
public void onItemSelected(String link) {
    DetailFragment fragment = (DetailFragment) getSupportFragmentManager().findFragmentById(R.id.detailFragment);
    if (fragment != null && fragment.isInLayout()) {
          fragment.setText(link);
    } else {
      Intent intent = new Intent(getApplicationContext(), PlaceActivity.class);
          intent.putExtra(PlaceActivity.EXTRA_URL, link);
      startActivity(intent);
    }
}

}

这是ListFragmentClickable类:

public class ListFragmentClickable extends ListFragment{

  private OnItemSelectedListener listener;


  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
      View view = inflater.inflate(R.layout.activity_results_view, container, false);
      return view;
  }

  @Override
      public void onListItemClick(ListView l, View v, int position, long id) {
          updateDetail(); //see bottom
      }

  public interface OnItemSelectedListener {
      public void onItemSelected(String link);
  }

  @Override
  public void onAttach(Activity activity) {
      super.onAttach(activity);
      if (activity instanceof OnItemSelectedListener) {
          listener = (OnItemSelectedListener) activity;
      } else {
          throw new ClassCastException(activity.toString()
            + " must implemenet ListFragmentClickable.OnItemSelectedListener");
      }
  }


 public void updateDetail() {
        // Create fake data
    String newTime = String.valueOf(System.currentTimeMillis());
    // Send data to Activity
    listener.onItemSelected(newTime); //should direct PlaceActivity!!
  }
}

这是ResultsActivity的我的布局文件(activity_results_activity.xml):

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >

<fragment
    android:id="@+id/fragment_content"
    android:layout_width="0dp"
    android:layout_weight="1"
    android:layout_height="match_parent"
    android:layout_marginTop="?android:attr/actionBarSize"
    class="com.example.blobtag2.ListFragmentClickable" ></fragment>


<ListView
    android:id="@android:id/list"
    android:layout_width="fill_parent"
    android:layout_height="50dp"
    android:divider="#b5b5b5"
    android:dividerHeight="1dp"></ListView>

</LinearLayout> 

最后这是日志:

03-21 22:32:03.297: E/AndroidRuntime(764): FATAL EXCEPTION: main
03-21 22:32:03.297: E/AndroidRuntime(764): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.blobtag2/com.example.blobtag2.ResultsActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.app.ActivityThread.access$600(ActivityThread.java:130)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.os.Handler.dispatchMessage(Handler.java:99)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.os.Looper.loop(Looper.java:137)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.app.ActivityThread.main(ActivityThread.java:4745)
03-21 22:32:03.297: E/AndroidRuntime(764):  at java.lang.reflect.Method.invokeNative(Native Method)
03-21 22:32:03.297: E/AndroidRuntime(764):  at java.lang.reflect.Method.invoke(Method.java:511)
03-21 22:32:03.297: E/AndroidRuntime(764):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
03-21 22:32:03.297: E/AndroidRuntime(764):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
03-21 22:32:03.297: E/AndroidRuntime(764):  at dalvik.system.NativeStart.main(Native Method)
03-21 22:32:03.297: E/AndroidRuntime(764): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
03-21 22:32:03.297: E/AndroidRuntime(764):  at com.example.blobtag2.ListFragmentClickable.onCreateView(ListFragmentClickable.java:32)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:846)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1061)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1160)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
03-21 22:32:03.297: E/AndroidRuntime(764):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:256)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.app.Activity.setContentView(Activity.java:1867)
03-21 22:32:03.297: E/AndroidRuntime(764):  at com.example.blobtag2.ResultsActivity.onCreate(ResultsActivity.java:37)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.app.Activity.performCreate(Activity.java:5008)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
03-21 22:32:03.297: E/AndroidRuntime(764):  ... 11 more
03-21 22:32:03.297: E/AndroidRuntime(764): Caused by: java.lang.IllegalArgumentException: Binary XML file line #7: Duplicate id 0x7f070003, tag null, or parent id 0x0 with another fragment for com.example.blobtag2.ListFragmentClickable
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:277)
03-21 22:32:03.297: E/AndroidRuntime(764):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
03-21 22:32:03.297: E/AndroidRuntime(764):  ... 30 more

非常感谢任何和所有的帮助.如果我还能添加其他内容,请告诉我们？

Answer 1

问题是xml上的片段被加载了两次,第二次被添加到FragmentManager时会出现IllegalArgumentException.我昨天遇到了同样的问题.

我的解决方案,我将其更改为动态重新创建片段,而不是在xml文件中定义它:

更改此xml文件部分:

<fragment
    android:id="@+id/fragment_content"
    android:layout_width="0dp"
    android:layout_weight="1"
    android:layout_height="match_parent"
    android:layout_marginTop="?android:attr/actionBarSize"
    class="com.example.blobtag2.ListFragmentClickable" ></fragment>

相反:

<FrameLayout
    android:id="@+id/fragment_content"
    android:layout_width="0dp"
    android:layout_weight="1"
    android:layout_height="match_parent"
    android:layout_marginTop="?android:attr/actionBarSize" />

然后在onCreate中,你应该用FrameLayout替换一个新的片段:

Fragment fragment = new ListFragmentClickable();
FragmentManager     fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.fragment_content, fragment);
ft.commit(); 

然后你有相同的但是,你不会得到重复ID错误.

Answer 2

当以XML(静态)定义片段时发生:如果父片段被销毁,FragmentManager不管理子片段.然后,当XML第二次膨胀时,它会中断("重复ID"错误).

我绕过了这个问题,当父进程被销毁时手动删除XML片段,这段代码在父片段中:

@Override
public void onDestroyView() {

    FragmentManager fm = getFragmentManager();

    Fragment xmlFragment = fm.findFragmentById(R.id.XML_FRAGMENT_ID);
    if (xmlFragment != null) {
        fm.beginTransaction().remove(xmlFragment).commit();
    }

    super.onDestroyView();
}

copypasters注意事项:XML_FRAGMENT_ID是XML中片段的id;)

此外,我更喜欢包装XML片段的新类.它简化了代码,因为您只需要从中扩展您的片段类.将此类添加到项目中:

package net.treboada.mytests.fragments;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.util.AttributeSet;

public class XmlFragment extends Fragment {

    @Override
    public void onInflate(Activity activity, AttributeSet attrs,
            Bundle savedInstanceState) {

        FragmentManager fm = getFragmentManager();
        if (fm != null) {
            fm.beginTransaction().remove(this).commit();
        }

        super.onInflate(activity, attrs, savedInstanceState);
    }
}

然后,扩展XML片段类:

package net.treboada.mytests.fragments;

public class TestXmlFragment01 extends XmlFragment {

    // ...

}

瞧!:)

Answer 3

我们来试试吧.我遇到了同样的问题,我使用此代码修复了我的问题.

 View root;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    if (root!= null) {
        ViewGroup parent = (ViewGroup) root.getParent();
        if (parent != null)
            parent.removeView(root);
    }
    try {
        root= inflater.inflate(R.layout.map_layout, container, false);
    } catch (InflateException e) {
        /* map is already there, just return view as it is */
    }
    return root;
}

Answer 4

这条线

03-21 22:32:03.297: E/AndroidRuntime(764): Caused by: java.lang.IllegalArgumentException: Binary XML file line #7: Duplicate id 0x7f070003, tag null, or parent id 0x0 with another fragment for com.example.blobtag2.ListFragmentClickable

特别是最后的部分

Duplicate id 0x7f070003, tag null, or parent id 0x0 with another fragment for com.example.blobtag2.ListFragmentClickable

告诉您，在 Activity 生命周期的某个时刻，您尝试为 ListFragmentClickable 创建一个视图，而该视图已经存在。您需要弄清楚这是如何发生的。