包含片段的ActionBar选项卡在重新显示时崩溃

Question

02-21 10:25:10.077:E/AndroidRuntime（3916）：原因：java.lang.IllegalArgumentException：二进制XML文件行#29:id 0x7F06006E重复，标记为空，或父id 0x0带有com.nexapps.myq.fragments.titleInfo 02-21 10:25:10.077:E/AndroidRuntime（3916）：在Android.support.v4.app.fragmentActivity.onCreateView（FragmentActivity.java:275)上10:25:10.077:E/AndroidRuntime（3916）：在

我的主要活动：

public class TitleActivity extends SherlockFragmentActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {       
        ...
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        ...
        Tab tab = actionBar.newTab().setText(R.string.details);
        tab.setTabListener(new TabListener<TitleDetailsFragment>(this, "details", TitleDetailsFragment.class));
        actionBar.addTab(tab);         
    }

}

选项卡侦听器：公共类TabListener实现com.actionbarsherlock.app.actionbar.TabListener{private Fragment mfragment；private final Activity mactivity；private final String mtag；private final class mclass；

  public TabListener(Activity activity, String tag, Class<T> cls) {
      mActivity = activity;
      mTag = tag;
      mClass = cls;
  }

  public TabListener(Activity activity, String tag, Class<T> clz, Fragment fragment) {
      mActivity = activity;
      mTag = tag;
      mClass = clz;
      mFragment = fragment;
  }

  public void onTabSelected(Tab tab, FragmentTransaction ft) {
      if (mFragment == null) {
          mFragment = Fragment.instantiate(mActivity, mClass.getName());
          ft.add(android.R.id.content, mFragment, mTag);
      } else {
          ft.attach(mFragment);
      }

      TabChangeInterface tci = (TabChangeInterface) mActivity;
      if (tci != null) {
        tci.tabSelect(mTag);
      }
  }

  public void onTabUnselected(Tab tab, FragmentTransaction ft) {
      if (mFragment != null) {
          ft.detach(mFragment);
      }
  }

  public void onTabReselected(Tab tab, FragmentTransaction ft) {
  }

}

public class TitleDetailsFragment extends SherlockFragment {
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.activity_title, container, false);
        return view;
    }
}

r.layout.activity_title:

<fragment
   android:id="@+id/info"
   android:name="foo.TitleInfo"
   ...

我可以删除id（这可以解决这个问题），但这些可以帮助更改状态。有什么想法如何保留ids和解决问题吗？




Answer 1

不能删除嵌入在xml布局中的片段。为此，您应该更改xml以包含 ，然后通过调用：

MyFrag newFragment = new MyFrag();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.fragment_container,newFragment,"myFragName")
.addToBackStack("myFragName")//optional
.commit();

假设您使用的是支持包，否则只需将GetSupportFragmentManager()更改为GetFragmentManager()

您可以在这里阅读更多关于使用片段的内容：http://developer.android.com/training/basics/fragments/index.html

编辑：更新以包含基于新信息的代码

r.layout.activity_title:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Title" >

    <FrameLayout
        android:id="@+id/fragment_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</LinearLayout>

TitleActivity.Class：

public class TitleActivity extends SherlockFragmentActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {       
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_title);        
         ...
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        ...
        Tab tab = actionBar.newTab().setText(R.string.details);
        tab.setTabListener(new TabListener<TitleDetailsFragment>(this, "details", TitleDetailsFragment.class));
        actionBar.addTab(tab);         
    }

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/textView1"
       android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical|center_horizontal"
        android:textSize="10sp"
        android:textStyle="italic"
        android:text="Details are here!"/>
</RelativeLayout>

public class TitleDetailsFragment extends SherlockFragment {

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
       return inflater.inflate(R.layout.details_fragment, container, false);
    }
}