我有一个SherlockFragmentActivity,它使用带有标签的ActionBar。其中一个标签是SherlockFragment,它有一个包含片段的布局文件。首次显示该选项卡时,一切都很棒。如果我切换到另一个选项卡,然后返回到该选项卡,我会崩溃:
02-21 10:25:10.077: E/AndroidRuntime(3916): Caused by: java.lang.IllegalArgumentException: Binary XML file line #29: Duplicate id 0x7f06006e, tag null, or parent id 0x0 with another fragment for com.nexapps.myq.fragments.TitleInfo
02-21 10:25:10.077: E/AndroidRuntime(3916): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:275)
02-21 10:25:10.077: E/AndroidRuntime(3916): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
02-21 10:25:10.077: E/AndroidRuntime(3916): ... 21 more
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);
}
}
标签监听器: 公共类TabListener实现com.actionbarsherlock.app.ActionBar.TabListener { 私人片段mFragment; 私人最终活动动态; 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) {
}
}
我的标签片段:
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(修复问题),但这些有助于状态更改。关于如何保留ID并解决问题的任何想法?
答案 0 :(得分:0)
您无法删除嵌入在xml布局中的片段。为此,您应该更改xml以包含<FrameLayout android:id="fragment_container" .../>
,然后通过调用以编程方式替换帧中的片段:
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()
您可以在此处阅读有关使用片段的更多信息:http://developer.android.com/training/basics/fragments/index.html
编辑:已更新,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);
}
}
R.layout.details_fragment:
<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>
TabFragment:
public class TitleDetailsFragment extends SherlockFragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.details_fragment, container, false);
}
}
TabListener你可以保持与上面的代码相同。
答案 1 :(得分:-1)
因此,这与标签内容是片段,片段不能包含片段这一事实有关。因此,请在此处使用视图,或使用事务手动删除/添加。