android.view.inflateException:二进制XML文件行＃17:错误夸大类片段

Question

我正在寻找这个问题的答案（有很多问题与此错误有关），但它们都不适合我。所以我想打电话两个片段。如果我只称youtube碎片，一切都可以。关于其他活动炎（仅带有adsfragment）一切也很好。

这里是：

studio.java

public class Studio extends YouTubeFailureRecoveryActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_studio);
        YouTubePlayerFragment youTubePlayerFragment =
                (YouTubePlayerFragment) getFragmentManager().findFragmentById(R.id.youtube_fragment);
        youTubePlayerFragment.initialize("myapikey", this);
    }

    @Override
    public void onStart() {
        super.onStart();
        EasyTracker.getInstance(this).activityStart(this);  // Add this method.
    }

        @Override
        public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player,
                                            boolean wasRestored) {
            if (!wasRestored) {
                player.cueVideo("film");
            }
        }
        @Override
        protected YouTubePlayer.Provider getYouTubePlayerProvider() {
            return (YouTubePlayerFragment) getFragmentManager().findFragmentById(R.id.youtube_fragment);
        }

    public void showPlaylist(View view){
        Intent intent = YouTubeIntents.createUserIntent(this, "User");
        startActivity(intent);
}

    @Override
    public void onStop() {
        super.onStop();
        // The rest of your onStop() code.
        EasyTracker.getInstance(this).activityStop(this);  // Add this method.
    }
}

这是activity_studio.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#cccccc"
    tools:context="pl.krasiniak.krachapp_beta.Studio"
    tools:ignore="MergeRootFrame">
    <fragment
        android:id="@+id/youtube_fragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        class = "com.google.android.youtube.player.YouTubePlayerFragment" />

    <fragment
        android:gravity="center"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:id="@+id/fragmentAds"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        class="pl.krasiniak.krachapp_beta.AdsFragment"
        android:layout_gravity="center_horizontal|bottom" />

    <ImageView
    android:layout_margin="15dp"
    android:src="@drawable/logo_studio"
    android:layout_width="150dp"
    android:layout_height="150dp"
    android:layout_below="@+id/youtube_fragment"
    android:onClick="showPlaylist"
    android:id="@+id/imageView" />

    <TextView
    android:scaleType="fitXY"
    android:layout_marginRight="15dp"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/StudioKrasiniakText"
    android:layout_alignTop="@+id/imageView"
    android:layout_toRightOf="@+id/imageView" />

</RelativeLayout>

和logcat

01-24 22:00:38.394  14282-14282/pl.krasiniak.krachapp_beta E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.RuntimeException: Unable to start activity ComponentInfo{pl.krasiniak.krachapp_beta/pl.krasiniak.krachapp_beta.Studio}: android.view.InflateException: Binary XML file line #17: Error inflating class fragment
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2079)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2104)
            at android.app.ActivityThread.access$600(ActivityThread.java:132)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1157)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4575)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: android.view.InflateException: Binary XML file line #17: Error inflating class fragment
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:697)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:251)
            at android.app.Activity.setContentView(Activity.java:1835)
            at pl.krasiniak.krachapp_beta.Studio.onCreate(Studio.java:44)
            at android.app.Activity.performCreate(Activity.java:4465)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2033)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2104)
            at android.app.ActivityThread.access$600(ActivityThread.java:132)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1157)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4575)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.ClassCastException: pl.krasiniak.krachapp_beta.AdsFragment cannot be cast to android.app.Fragment
            at android.app.Fragment.instantiate(Fragment.java:574)
            at android.app.Fragment.instantiate(Fragment.java:549)
            at android.app.Activity.onCreateView(Activity.java:4235)
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:673)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:251)
            at android.app.Activity.setContentView(Activity.java:1835)
            at pl.krasiniak.krachapp_beta.Studio.onCreate(Studio.java:44)
            at android.app.Activity.performCreate(Activity.java:4465)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2033)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2104)
            at android.app.ActivityThread.access$600(ActivityThread.java:132)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1157)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4575)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
            at dalvik.system.NativeStart.main(Native Method)

adsfragment.java

public class AdsFragment extends Fragment implements AdListener {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState ) {
        View rootView = inflater.inflate(R.layout.fragment_ads, container, false);
        assert rootView != null;
        RelativeLayout layout = (RelativeLayout) rootView.findViewById(R.id.fragment_adsLayout);
        AdManager mManager = new AdManager(getActivity(), "url", "code", true);
        mManager.setListener(this);
        AdView mAdView = new AdView(getActivity(), "url",
                "code", true, true);
        mAdView.setAdListener(this);
        layout.addView(mAdView);
        return rootView;
    }
    @Override
    public void adClicked() {
    }
    @Override
    public void adClosed(Ad ad, boolean b) {
    }
    @Override
    public void adLoadSucceeded(Ad ad) {
    }
    @Override
    public void adShown(Ad ad, boolean b) {
    }
    @Override
    public void noAdFound() {
    }
}

Answer 1

Caused by: java.lang.ClassCastException: pl.krasiniak.krachapp_beta.AdsFragment cannot be cast to android.app.Fragment

显然，您的AdsFragment不是片段，或者扩展了Android支持软件包的片段片段（android.support.v4.app.Fragment）。

Answer 2

我遇到了这个错误，这是由Android：class上的错误路径引起的。请确保您的代码使用正确的路径。