我的主要活动有一个带有两个标签的ActionBar.选项卡1是ListFragment,选项卡2是使用HeaderListView库的片段.当您打开应用程序时,选项卡1显示.当您切换到选项卡2,然后返回选项卡1,最后返回选项卡2时,应用程序崩溃时出现以下情况:
09-12 13:19:22.440 21772-21772/com.iosharp.android.smoothstreams E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.iosharp.android.smoothstreams, PID: 21772
java.lang.IllegalArgumentException: Wrong state class, expecting View State but received class android.widget.AbsListView$SavedState instead. This usually happens when two views of different type have the same id in the same hierarchy. This view's id is id/header_list_view. Make sure other views do not use the same id.
id / header_list_view仅在选项卡2中使用,仅在onCreateView()方法中使用,并且不在选项卡1中膨胀.我对从何处开始感到困惑.同样值得我使用android.app.v4.support.Fragment
标签2的片段的相关部分:
public class ProgrammeListFragment extends Fragment {
private static final String TAG = ProgrammeListFragment.class.getSimpleName();
private ArrayList<Programme> mProgrammes;
private ArrayList<Day> mDays;
private Date mNow;
private HeaderListView mHeaderListView;
static private SectionAdapter mAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mNow = new Date();
mProgrammes = ProgrammeStore.get(getActivity()).getProgrammes();
Collections.sort(mProgrammes, new Programme());
mProgrammes = trimProgrammes(mProgrammes);
mDays = setupDays(mProgrammes);
}
@Override
public View onCreateView(LayoutInflater inflater, final ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.progamme_header_list, container, false);
mHeaderListView = (HeaderListView) v.findViewById(R.id.header_list_view);
mAdapter = new SectionAdapter() {
@Override
public int numberOfSections() {
return mDays.size();
}
@Override
// TODO: sometimes -1 is passed as int section, this needs to be looked at later
public int numberOfRows(int section) {
if (section > -1) {
return mDays.get(section).getLineUp().size();
} else {
return 1;
}
}
@Override
public View getRowView(int section, int row, View convertView, ViewGroup parent) {
convertView = getActivity().getLayoutInflater().inflate(
R.layout.programme_list_item, null);
//set views
return convertView;
}
@Override
public Day getSectionHeaderItem(int section) {
return mDays.get(section);
}
@Override
public int getSectionHeaderItemViewType(int section) {
return super.getSectionHeaderItemViewType(section);
}
@Override
public boolean hasSectionHeaderView(int section) {
return true;
}
@Override
public View getSectionHeaderView(int section, View convertView, ViewGroup parent) {
convertView = getActivity().getLayoutInflater().inflate(R.layout.programme_list_header, null);
// set views
return convertView;
}
@Override
public Programme getRowItem(int section, int row) {
return mDays.get(section).getLineUp().get(row);
}
};
mHeaderListView.setAdapter(mAdapter);
return v;
}
}
MainActivity的相关部分,用于实例化片段和选项卡:
public class MainActivity extends ActionBarActivity {
private static final String TAG = MainActivity.class.getSimpleName();
private static final String KEY_TAB = "tab";
private Fragment fragmentChannels = new ChannelListFragment();
private Fragment fragmentProgrammes = new ProgrammeListFragment();
private int mCurrentTab;
private ActionBar mActionBar;
private ArrayList<Channel> mChannels;
private ArrayList<Programme> mProgrammes;
private ProgressDialog mProgressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fragment);
mActionBar = getSupportActionBar();
mActionBar.setTitle(R.string.app_name);
mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
mActionBar.addTab(mActionBar.newTab().setText(R.string.channels_title).setTabListener(new TabListener(fragmentChannels)));
mActionBar.addTab(mActionBar.newTab().setText(R.string.programmes).setTabListener(new TabListener(fragmentProgrammes)));
// Get singletons
mProgrammes = ProgrammeStore.get(getApplication()).getProgrammes();
mChannels = ChannelStore.get(getApplicationContext()).getChannels();
}
}
以防我在TabListener类中有两个方法:
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
fragmentTransaction.replace(R.id.fragmentContainer, fragment);
}
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
fragmentTransaction.remove(fragment);
}
最佳答案 这是HeaderListView中的一个问题.将listview(listView.setId(1))上的id设置为任何整数可以解决问题.