互換性を持つフラグメントライブラリ

Question

私は最も単純な方法でフラグメントを使用しようとしています。私は、異なるものにつながるボタンのセットを表示する最初のものを持っていることを探します。 私は互換性ライブラリを使用しています。これはうまく含まれているようですが、すべてのインポートが正しいです。ここ

は私がやろうとしている方法です：

メイン：

public class MainActivity extends FragmentActivity { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
    } 
} 

main.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" > 

    <fragment 
     android:id="@+id/titles_frag" 
     android:name="com.clicmobile.cannes.TitlesFragments" 
     android:layout_width="match_parent" 
     android:layout_height="0dp" 
     android:layout_weight="1" > 
    </fragment> 

    <FrameLayout 
     android:id="@+id/details" 
     android:layout_width="match_parent" 
     android:layout_height="0dp" 
     android:layout_weight="1" /> 

</LinearLayout> 

私TitlesFragments：

public class TitlesFragments extends Fragment { 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 

     View mainView = inflater.inflate(R.layout.title_fragment, container, 
       false); 


     GrigFragment details = (GrigFragment) getFragmentManager() 
       .findFragmentById(R.id.details); 

SOLUTION ： GridFragment details =新しいGridFragment（）;

 FragmentTransaction ft = getFragmentManager().beginTransaction(); 
     ft.replace(R.id.details, details); 
     ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); 
     ft.commit(); 

     return mainView; 

    } 
} 

title_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" > 
    <Button 
    android:layout_height="wrap_content" 
    android:layout_width="wrap_content" 
    android:id="@+id/myButton" 
    android:text="lol" 
    /> 

</LinearLayout> 

がGridFragment：

public class GrigFragment extends Fragment{ 

    public static GrigFragment newInstance() { 
     GrigFragment f = new GrigFragment(); 



      return f; 
     } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 

     View mainView = inflater.inflate(R.layout.title_fragment_2, container, false);  
     return mainView; 


    } 
} 

私title_fragment_2.xmlは、私はforceCloseを得る私のtitle_fragment.xml

と非常によく似ています！

私logCat：

あなたのXMLにクラスattritbutを追加したい場合があります

02-14 16:29:24.500: E/AndroidRuntime(5204): FATAL EXCEPTION: main 
02-14 16:29:24.500: E/AndroidRuntime(5204): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.clicmobile.cannes/com.clicmobile.cannes.MainActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.os.Handler.dispatchMessage(Handler.java:99) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.os.Looper.loop(Looper.java:130) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.app.ActivityThread.main(ActivityThread.java:3683) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at java.lang.reflect.Method.invokeNative(Native Method) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at java.lang.reflect.Method.invoke(Method.java:507) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at dalvik.system.NativeStart.main(Native Method) 
02-14 16:29:24.500: E/AndroidRuntime(5204): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:587) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:623) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.view.LayoutInflater.inflate(LayoutInflater.java:408) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.app.Activity.setContentView(Activity.java:1657) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at com.clicmobile.cannes.MainActivity.onCreate(MainActivity.java:13) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  ... 11 more 
02-14 16:29:24.500: E/AndroidRuntime(5204): Caused by: java.lang.NullPointerException 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.support.v4.app.BackStackRecord.doAddOp(BackStackRecord.java:321) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.support.v4.app.BackStackRecord.replace(BackStackRecord.java:360) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.support.v4.app.BackStackRecord.replace(BackStackRecord.java:352) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at com.clicmobile.cannes.TitlesFragments.onCreateView(TitlesFragments.java:29) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:772) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:970) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1048) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:257) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563) 
02-14 16:29:24.500: E/AndroidRuntime(5204):  ... 20 more 

Answer 1

：

<fragment 
    android:id="@+id/titles_frag" 
    android:name="com.clicmobile.cannes.TitlesFragments" 
    **android:class="com.clicmobile.cannes.TitlesFragments"** 
    android:layout_width="match_parent" 
    android:layout_height="0dp" 
    android:layout_weight="1" 
> 
</fragment>