标签内的碎片

我正在创建具有两个标签的菜单。每个标签都有三个片段显示内容。我虽然这将是直截了当，但经过试验和谷歌搜索，看起来像我错了。标签内的碎片

我设法创建片段到第一个选项卡。然而，当我切换到其他选项卡，回来了，我得到了以下错误消息和应用程序崩溃：

07-11 16:49:57.829: E/AndroidRuntime(20009): FATAL EXCEPTION: main 
07-11 16:49:57.829: E/AndroidRuntime(20009): android.view.InflateException: Binary XML file line #8: Error inflating class fragment 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:697) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.view.LayoutInflater.rInflate(LayoutInflater.java:739) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at com.machinedata.ui.feedback.UsersFragment.onCreateView(UsersFragment.java:16) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:828) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1032) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.app.BackStackRecord.run(BackStackRecord.java:622) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1382) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.app.FragmentManagerImpl$1.run(FragmentManager.java:426) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.os.Handler.handleCallback(Handler.java:605) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.os.Handler.dispatchMessage(Handler.java:92) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.os.Looper.loop(Looper.java:137) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.app.ActivityThread.main(ActivityThread.java:4507) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at java.lang.reflect.Method.invokeNative(Native Method) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at java.lang.reflect.Method.invoke(Method.java:511) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:978) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:745) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at dalvik.system.NativeStart.main(Native Method) 
07-11 16:49:57.829: E/AndroidRuntime(20009): Caused by: java.lang.IllegalArgumentException: Binary XML file line #8: Duplicate id 0x7f0b0013, tag null, or parent id 0xffffffff with another fragment for com.machinedata.ui.UserListFragment 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.app.Activity.onCreateView(Activity.java:4252) 
07-11 16:49:57.829: E/AndroidRuntime(20009): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:673)

现在我的标签是片段本身，这是动态放置到屏幕上。然后，这些片段将静态地放入片段的xml文件加大。经过一些谷歌搜索后，我发现将碎片放入碎片中有点棘手。

getChildFragmentManager在API级别17中工作，但我想保持API级别为14.有没有办法创建这种菜单结构？我需要为选项卡创建单独的活动吗？

这里是我的活动，显示选项卡：

public class FeedbackActivity extends Activity implements UserListFragment.OnItemClickedListener 
{ 

    private ToplistsFragment toplist; 
    private UsersFragment users; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     final ActionBar actionBar = getActionBar(); 
     actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); 
     setContentView(R.layout.feedback_screen); 

     //create tabs for dashboard and graphs 
     ActionBar.Tab tab1 = actionBar.newTab().setText(R.string.feedbackUsers); 
     ActionBar.Tab tab2 = actionBar.newTab().setText(R.string.feedbackToplist); 
     toplist = new ToplistsFragment(); 
     users = new UsersFragment(); 
     tab2.setTabListener(new MyTabsListener(toplist)); 
     tab1.setTabListener(new MyTabsListener(users)); 
     actionBar.addTab(tab1); 
     actionBar.addTab(tab2); 


    } 

    @Override 
    public void onCreateContextMenu(ContextMenu menu, View v, 
      ContextMenuInfo menuInfo) { 
     // TODO Auto-generated method stub 
     super.onCreateContextMenu(menu, v, menuInfo); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // TODO Auto-generated method stub 
     return super.onCreateOptionsMenu(menu); 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) 
    { 
     // TODO Auto-generated method stub 
     Log.v("log","ID: " + item.getItemId() + " " + item.getTitle()); 
     switch (item.getItemId()) 
      {   
       case android.R.id.home: 
        Intent intent = new Intent(this, ModeSelectActivity.class); 
        startActivity(intent);   
       return true;  


       default:    
       return super.onOptionsItemSelected(item);  
      } 
    } 


    @Override 
    public void onUserItemClick(AdapterView<?> parent, View v, int position, long id, UserData user) 
    { 
     //wite your activity code here 

     Log.v("log", "name: " + user.getName());  
    } 


    //tablistener 
    class MyTabsListener implements ActionBar.TabListener 
    { 
     public Fragment fragment; 

     public MyTabsListener(Fragment fragment) 
     { 
      this.fragment = fragment; 
     } 

     @Override 
     public void onTabReselected(Tab tab, FragmentTransaction ft) 
     { 

     } 

     @Override 
     public void onTabSelected(Tab tab, FragmentTransaction ft) 
     { 
      ft.replace(R.id.feedback_fragcontainer, fragment); 
     } 

     @Override 
     public void onTabUnselected(Tab tab, FragmentTransaction ft) 
     { 
      ft.remove(fragment); 
     } 

    } 
}

它的XML文件：

<?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" > 

     <LinearLayout 
     android:id="@+id/feedback_fragcontainer" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" /> 

</LinearLayout>

以及片片段的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:baselineAligned="false"> 

    <fragment 
     android:id="@+id/feedbackuserListFragment" 
     android:layout_width="match_parent" 
     android:layout_weight="1" 
     android:layout_height="match_parent" 
     class="com.machinedata.ui.UserListFragment" > 

    </fragment> 

    <fragment 
     android:id="@+id/feedbackSessionListFragment" 
     android:layout_width="match_parent" 
     android:layout_weight="1" 
     android:layout_height="match_parent" 
     class="com.machinedata.ui.feedback.SessionListFragment" > 
     <!-- Preview: [email protected]/details --> 
    </fragment> 

    <fragment 
     android:id="@+id/feedbackDetailsFragment" 
     android:layout_width="match_parent" 
     android:layout_weight="0.5" 
     android:layout_height="match_parent" 
     class="com.machinedata.ui.feedback.DetailsFragment" > 
     <!-- Preview: [email protected]/details --> 
    </fragment> 




</LinearLayout>

说实话，我我不确定错误信息与重复ID的含义是什么，或者是什么原因造成的。基本上我正在寻找一种解决方案来创建我描述的菜单结构或修复当前实现的方法。

来源

2013-07-11 Tumetsu

该布局似乎不是'UsersFragment'的'onCreateView（）'膨胀。堆栈跟踪报告提示''元素存在问题，并且您在此处发布的布局不包含此内容。你确定'onCreateView（）'是膨胀正确的布局？ – CommonsWare

而不是“正常”片段使用支持库中的一个http://developer.android.com/reference/android/support/v4/app/Fragment.html#getChildFragmentManager（） – Selvin

忘了添加该选项卡的xml文件。活动应该充气feedback_screen.xml和UsersFragment（选项卡）应膨胀feedbackusers_tab.xml。 – Tumetsu

支持包中也提供了嵌套片段功能（在API级别17上实现）。从android.support.v4.app.Fragment扩展您的片段而不是android.app.Fragment。并将您的父母活动替换为android.support.v4.app.FragmentActivity。

来源

2013-07-11 14:15:57

标签内的碎片

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