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我有一个主类，我想向其中添加两个片段。目前，我只编写了一个片段，所以我决定测试一下。但是，我在 log cat 中得到如下异常： 

08-02 13:07:24.541: E/Trace(952): error opening trace file: No such file or directory (2)
08-02 13:07:27.641: E/AndroidRuntime(952): FATAL EXCEPTION: main
08-02 13:07:27.641: E/AndroidRuntime(952): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.tqafragments/com.example.tqafragments.MainActivity}: android.view.InflateException: Binary XML file line #11: Error inflating class fragment
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.ActivityThread.access$600(ActivityThread.java:141)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.os.Handler.dispatchMessage(Handler.java:99)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.os.Looper.loop(Looper.java:137)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.ActivityThread.main(ActivityThread.java:5041)
08-02 13:07:27.641: E/AndroidRuntime(952):  at java.lang.reflect.Method.invokeNative(Native Method)
08-02 13:07:27.641: E/AndroidRuntime(952):  at java.lang.reflect.Method.invoke(Method.java:511)
08-02 13:07:27.641: E/AndroidRuntime(952):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-02 13:07:27.641: E/AndroidRuntime(952):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
08-02 13:07:27.641: E/AndroidRuntime(952):  at dalvik.system.NativeStart.main(Native Method)
08-02 13:07:27.641: E/AndroidRuntime(952): Caused by: android.view.InflateException: Binary XML file line #11: Error inflating class fragment
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
08-02 13:07:27.641: E/AndroidRuntime(952):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.Activity.setContentView(Activity.java:1881)
08-02 13:07:27.641: E/AndroidRuntime(952):  at com.example.tqafragments.MainActivity.onCreate(MainActivity.java:13)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.Activity.performCreate(Activity.java:5104)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
08-02 13:07:27.641: E/AndroidRuntime(952):  ... 11 more
08-02 13:07:27.641: E/AndroidRuntime(952): Caused by: android.app.SuperNotCalledException: Fragment FeedFragment{40d076d0 #0 id=0x7f080003} did not call through to super.onCreate()
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.Fragment.performCreate(Fragment.java:1675)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:854)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1035)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.FragmentManagerImpl.addFragment(FragmentManager.java:1137)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.app.Activity.onCreateView(Activity.java:4717)
08-02 13:07:27.641: E/AndroidRuntime(952):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)
08-02 13:07:27.641: E/AndroidRuntime(952):  ... 21 more

我的主要活动除了setContentView. 有一个指向 Here is the class
的标签：main.xmlfragmentFeedFragment
FeedFragment

package com.example.tqafragments;

import java.util.Vector;

import android.app.Fragment;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ExpandableListView;

/**
 * FeedFragment
 * @author 
 *
 */
public class FeedFragment extends Fragment{
    Vector<Feed> feeds = null; 

    @Override
    public void onCreate(Bundle savedInstanceState){
        // nothing to initialize.
    }
//------------------------------------------------------------------------------
    @Override 
    public View onCreateView(LayoutInflater inflater, 
            ViewGroup container, 
            Bundle savedInstanceState){
        return inflater.inflate(R.layout.feed_fragment, container, false); // inflate the fragment layout
    }
//------------------------------------------------------------------------------
    @Override 
    public void onStart(){
        new AsyncFeedRetriever().execute(new FeedProcessor()); // get the RSS feeds
        // Add itemClickListener for ExpandableListView
        // in other fragment as the other fragment
        // is not yet inflated. Will result in a NPE here.
    }
//------------------------------------------------------------------------------
    /**
     * AsyncRetriever
     * @author 
     *
     */
    class AsyncFeedRetriever extends AsyncTask<FeedProcessor,Void,FeedProcessor>{
        ProgressDialog pDialog = null;
//------------------------------------------------------------------------------    
        @Override
        protected void onPreExecute(){
            pDialog = new ProgressDialog(getActivity()); // display dialog box
            pDialog.setMessage(getActivity().getResources().getText(R.string.loading));
            pDialog.show();
        }
//------------------------------------------------------------------------------
        @Override
        protected FeedProcessor doInBackground(FeedProcessor... arg0) {
            FeedProcessor p = arg0[0];
            p.processFeed(); // get the feeds, actually, from the URL.
            return p;
        }
//------------------------------------------------------------------------------
        @Override
        protected void onPostExecute(FeedProcessor p){
            pDialog.dismiss();
            ExpandableListView list = (ExpandableListView) getActivity().findViewById(R.id.expandingList);

            if(p.errorOccured == false){
                feeds = p.getFeeds(); // populate the list
                ArrayAdapter<Feed> adapter = new ArrayAdapter<Feed>(
                        getActivity(), 
                        R.layout.list_row, 
                        R.id.row,
                        feeds);
                list.setAdapter(adapter);
            }else{
                // nothing
            }
        }
//------------------------------------------------------------------------------
    }
}

feed_fragment.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="vertical" >
    <ExpandableListView android:id="@+id/expandingList" 
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1">

    </ExpandableListView>
    <LinearLayout android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="0"
        android:gravity="center"
        android:background="#FF808080">
        <Button android:id="@+id/refresh"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" 
            android:text="@string/refresh_str"/>"
    </LinearLayout>

</LinearLayout>

有人可以帮我解决这个问题吗？

4

1 回答 1

1

错误： 说你在你的方法Caused by: android.app.SuperNotCalledException: Fragment FeedFragment{40d076d0 #0 id=0x7f080003} did not call through to super.onCreate() 中遗漏了：super.onCreateonCreate

public class FeedFragment extends Fragment{
Vector<Feed> feeds = null; 

@Override
public void onCreate(Bundle savedInstanceState){
    // you need this line here!
    super.onCreate(savedInstanceState);

}
于 2013-08-02T13:14:10.267 回答