強行關閉（重複片段）時recreateView在片段

Question

我按照這裏的教程Android Action Bar

，並在該ArtistFragment.class

public class ArtistFragment extends Fragment { 

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

     View fragView = inflater.inflate(R.layout.main_fragment, container, false); 
     return fragView; 
    } 
} 

起初我選擇選項卡Artist它表明觀點，但是，當我切換到另一個然後，再次切換回Artist製表符，導致關閉。

main_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="horizontal" 
    android:padding="10dp" 
    android:id="@+id/frags" > 

    <fragment 
     android:name="com.android.custom.FragmentLeft" 
     android:id="@+id/fragment_left" 
     android:layout_weight="0.25" 
     android:layout_width="0dp" 
     android:layout_height="match_parent"/> 
    <fragment 
     android:name="com.android.custom.FragmentRight" 
     android:id="@+id/fragment_right" 
     android:layout_weight="0.75" 
     android:layout_width="0dp" 
     android:layout_height="match_parent"/> 

</LinearLayout> 

logcat的

05-27 11:58:36.398: E/AndroidRuntime(4216): FATAL EXCEPTION: main 
05-27 11:58:36.398: E/AndroidRuntime(4216): android.view.InflateException: Binary XML file line #9: Error inflating class fragment 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:688) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:724) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.view.LayoutInflater.inflate(LayoutInflater.java:479) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.view.LayoutInflater.inflate(LayoutInflater.java:391) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at com.android.custom.ArtistFragment.onCreateView(ArtistFragment.java:20) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:776) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.app.FragmentManagerImpl.attachFragment(FragmentManager.java:1133) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.app.BackStackRecord.run(BackStackRecord.java:628) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1309) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.app.FragmentManagerImpl$1.run(FragmentManager.java:398) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.os.Handler.handleCallback(Handler.java:587) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.os.Handler.dispatchMessage(Handler.java:92) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.os.Looper.loop(Looper.java:132) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.app.ActivityThread.main(ActivityThread.java:4123) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at java.lang.reflect.Method.invokeNative(Native Method) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at java.lang.reflect.Method.invoke(Method.java:491) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at dalvik.system.NativeStart.main(Native Method) 
05-27 11:58:36.398: E/AndroidRuntime(4216): Caused by: java.lang.IllegalArgumentException: Binary XML file line #9: Duplicate id 0x7f080011, tag null, or parent id 0x7f080010 with another fragment for com.android.custom.FragmentLeft 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.app.Activity.onCreateView(Activity.java:4182) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:664) 
05-27 11:58:36.398: E/AndroidRuntime(4216):  ... 18 more 

Answer 1

爲什麼R.layout.main_fragment有它內部的兩個片段？ A Fragment裏面不能有其他Fragment ......它必須在Activity之內。是否有你想要膨脹的artist_fragment.xml？

Answer 2

裹的代碼在onCreate方法

if(savesInstanceState == null) { 
    // your code here 
} 

這將防止從框架試圖重新在一個方向或活性改變一切（這是什麼，我認爲正在發生的事情）。你應該（在大多數情況下）在每個活動中都有這個功能，這樣框架可以像大多數人所期望的那樣工作。