类强制转换异常无法强制转换为android.app.Fragment

我不知道为什么我会得到这个类强制转换异常。我正在使用来自FragmentActivity的支持版本ListFragment

下面是我的活动 包com.thuptencho.transitbus.routes

import java.util.List;

import android.content.AsyncQueryHandler;
import android.content.BroadcastReceiver;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.database.MergeCursor;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v4.content.LocalBroadcastManager;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.Spinner;
import android.widget.TextView;
public class RouteDetailFragmentActivity extends FragmentActivity implements LoaderManager.LoaderCallbacks<Cursor> {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        L.log();
        mContext = this;
        setContentView(R.layout.activity_route_detail);
        getActionBar().setDisplayHomeAsUpEnabled(true);
        if (savedInstanceState != null) {
            this.mRouteId = savedInstanceState.getInt(C.IntentExtrasKeys.ROUTE_ID);
        }
        else {
            Intent i = getIntent();
            mRouteId = i.getIntExtra(C.IntentExtrasKeys.ROUTE_ID, C.DEFAULT_INVALID_ID);
        }

        String defaultAgency = PreferenceManager.getDefaultSharedPreferences(this).getString(C.Settings.DEFAULT_AGENCY,
                        "none");
        getActionBar().setTitle(defaultAgency.toUpperCase());

        LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
                        new IntentFilter(C.Broadcast.ROUTES_SINGLE_UPDATED_ACTION));
        LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
                        new IntentFilter(C.Broadcast.DIRECTIONS_UPDATED_ACTION));
        LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
                        new IntentFilter(C.Broadcast.D_STOPS_UPDATED_ACTION));
        LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
                        new IntentFilter(C.Broadcast.R_STOPS_UPDATED_ACTION));

        setupView(); //...and so on

下面是Logcat错误消息

06-23 05:30:51.121: E/AndroidRuntime(30608): FATAL EXCEPTION: main
06-23 05:30:51.121: E/AndroidRuntime(30608): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.thuptencho.transitbus/com.thuptencho.transitbus.routes.RouteDetailFragmentActivity}: android.view.InflateException: Binary XML file line #40: Error inflating class fragment
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.os.Handler.dispatchMessage(Handler.java:99)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.os.Looper.loop(Looper.java:137)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread.main(ActivityThread.java:5041)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at java.lang.reflect.Method.invokeNative(Native Method)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at java.lang.reflect.Method.invoke(Method.java:511)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at dalvik.system.NativeStart.main(Native Method)
06-23 05:30:51.121: E/AndroidRuntime(30608): Caused by: android.view.InflateException: Binary XML file line #40: Error inflating class fragment
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Activity.setContentView(Activity.java:1881)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at com.thuptencho.transitbus.routes.RouteDetailFragmentActivity.onCreate(RouteDetailFragmentActivity.java:48)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Activity.performCreate(Activity.java:5104)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
06-23 05:30:51.121: E/AndroidRuntime(30608):    ... 11 more
06-23 05:30:51.121: E/AndroidRuntime(30608): Caused by: java.lang.ClassCastException: com.thuptencho.transitbus.shared.UpcomingRidesFragment cannot be cast to android.app.Fragment
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Fragment.instantiate(Fragment.java:585)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Fragment.instantiate(Fragment.java:560)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Activity.onCreateView(Activity.java:4709)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)

---

您的

routedDetailFragmentActivity

是否扩展了

android.support.v4.app.FragmentActivity

---

使用支持库时必须小心。您必须记住用支持库中的类替换通常的活动、片段等类。在继续之前，您应该先阅读页面。

您的

RoutedDetailFragmentActivity

是否扩展了

android.support.v4.app.FragmentActivity

---

使用支持库时必须小心。您必须记住用支持库中的类替换通常的活动、片段等类。在继续之前，您应该先阅读页面。

com.thuptencho.transitbus.shared.upComingRides片段它正在扩展android.support.v4.app.ListFragment，但在某些地方您尝试将其转换为android.app.Fragment。它应该是android.support.v4.app.Frgament。

com.thuptencho.transitbus.shared.upComingRides片段它正在扩展android.support.v4.app.ListFragment，但您尝试将其强制转换为android.app.Fragment。它应该是android.support.v4.app.Frgament。

是否检查了所有导入是否来自支持包？是否检查了所有导入是否来自支持包？我正在使用FragmentActivity。导入android.support.v4.app.FragmentActivity；我正在使用FragmentActivity。导入android.support.v4.app.FragmentActivity；

package com.thuptencho.transitbus.shared;

import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.View;
import android.widget.ListView;

import com.thuptencho.transitbus.R;
import com.thuptencho.transitbus.routes.PredictionAdapter;
import com.thuptencho.transitbus.utilities.L;

public class UpcomingRidesFragment extends ListFragment {

    private PredictionAdapter adapter;


    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        L.log();
        adapter = new PredictionAdapter(getActivity(), R.layout.prediction_listview_item, null);
        super.onActivityCreated(savedInstanceState);
    }
    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        L.log();
        super.onListItemClick(l, v, position, id);

    }

}

06-23 05:30:51.121: E/AndroidRuntime(30608): FATAL EXCEPTION: main
06-23 05:30:51.121: E/AndroidRuntime(30608): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.thuptencho.transitbus/com.thuptencho.transitbus.routes.RouteDetailFragmentActivity}: android.view.InflateException: Binary XML file line #40: Error inflating class fragment
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.os.Handler.dispatchMessage(Handler.java:99)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.os.Looper.loop(Looper.java:137)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread.main(ActivityThread.java:5041)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at java.lang.reflect.Method.invokeNative(Native Method)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at java.lang.reflect.Method.invoke(Method.java:511)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at dalvik.system.NativeStart.main(Native Method)
06-23 05:30:51.121: E/AndroidRuntime(30608): Caused by: android.view.InflateException: Binary XML file line #40: Error inflating class fragment
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Activity.setContentView(Activity.java:1881)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at com.thuptencho.transitbus.routes.RouteDetailFragmentActivity.onCreate(RouteDetailFragmentActivity.java:48)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Activity.performCreate(Activity.java:5104)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
06-23 05:30:51.121: E/AndroidRuntime(30608):    ... 11 more
06-23 05:30:51.121: E/AndroidRuntime(30608): Caused by: java.lang.ClassCastException: com.thuptencho.transitbus.shared.UpcomingRidesFragment cannot be cast to android.app.Fragment
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Fragment.instantiate(Fragment.java:585)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Fragment.instantiate(Fragment.java:560)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.app.Activity.onCreateView(Activity.java:4709)
06-23 05:30:51.121: E/AndroidRuntime(30608):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)