java - 膨胀 fragment 时出错

Question

我有一个 fragment ，我像下面一样对其进行膨胀，但它给出了运行时错误:

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View jobsView = inflater.inflate(R.layout.fragment_job_information, container, false);
        textView = (TextView) jobsView.findViewById(R.id.textView);


        if (jobInfo == null) {
            EmployerHistory jobsQuery=new EmployerHistory();
            jobInfo = jobsQuery.getJobInfo(employerName, position);
        }

        textView.setText(jobInfo.get("jobName").toString());

        return jobsView;
    }

其对应的布局为:

<fragment 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:id="@+id/jobInfoFragment">
    <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="com.example.ankit.job_depot.employer.view.JobInformation">


        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:text="Large Text"
            android:id="@+id/textView2"
            android:layout_centerVertical="true"
            android:layout_centerHorizontal="true" />
    </RelativeLayout>
</fragment>

实际上，我已经在带有 ListView 的 fragment 上，当用户单击 ListView 的元素时，该 fragment 需要被新 fragment 更改，在我的新 fragment 中，我有:升

istViewJobHistory.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                JobInformation newFragment =  new JobInformation();
                android.support.v4.app.FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
                transaction.replace(R.id.listViewJobHistory, newFragment);
                transaction.addToBackStack(null);
                transaction.commit();
            }

        });

我遇到以下异常:

07-28 18:49:39.681 14474-14474/com.example.ankit.job_depot E/AndroidRuntime﹕ FATAL EXCEPTION: main Process: com.example.ankit.job_depot, PID: 14474 android.view.InflateException: Binary XML file line #1: Error inflating class fragment at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763) at android.view.LayoutInflater.inflate(LayoutInflater.java:482) at android.view.LayoutInflater.inflate(LayoutInflater.java:414) at com.example.ankit.job_depot.employer.view.JobInformation.onCreateView(JobInformation.java:45) at android.support.v4.app.Fragment.performCreateView(Fragment.java:1789) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:955)

Answer 1

我认为你的主要 Activity 应该扩展 FragmentActivity

import android.support.v4.app.FragmentActivity;