我遇到了一个有趣的问题（如果这是正确的话！）我最近更新到最新的 Android 设计支持库 'com.android.support:design:22.2.1' 从 'com.android.support:设计：22.2.0'
更新后，当我使用来自支持库。
有趣的是，在我旋转屏幕后，选项卡文本和滚动条出现了，并且仍然存在 - 我不确定这是我的代码（发布在下面）还是库中的错误。当我回到“com.android.support:design:22.2.0”时，这个问题就消失了，但我也不排除。只是想看看其他人是否可能在新的设计支持库中遇到过这个问题。
我的代码：
使用 TabLayout 的片段布局：
LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.treefrogapps.TaDo.TaDOChooserFragment">
<android.support.design.widget.TabLayout
android:id="@+id/chooserFragmentSlidingTabsLayout"
android:layout_width="match_parent"
android:layout_height="56dp"
app:tabMode="fixed"/>
<android.support.v4.view.ViewPager
android:id="@+id/chooserFragmentViewPager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
</LinearLayout>
片段 Java 类
public class TaDOChooserFragment extends Fragment {
private View rootView;
private ViewPager mViewPager;
private TabLayout mTabLayout;
public TaDOChooserFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragment_tado_chooser, container, false);
return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
initialiseTabs();
}
private void initialiseTabs() {
mViewPager = (ViewPager) rootView.findViewById(R.id.chooserFragmentViewPager);
mViewPager.setAdapter(new TaDOChooserPagerAdapter(getActivity(), getChildFragmentManager()));
// new design library tab layout
mTabLayout = (TabLayout) rootView.findViewById(R.id.chooserFragmentSlidingTabsLayout);
mTabLayout.setBackgroundColor(getResources().getColor(R.color.primaryColor));
mTabLayout.setTabTextColors(getResources().getColor(R.color.grey_light), getResources().getColor(R.color.white));
mTabLayout.setupWithViewPager(mViewPager);
mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
Fragment fragment = ((TaDOChooserPagerAdapter) mViewPager.getAdapter()).getFragment(position);
if (fragment !=null){
fragment.onResume();
}
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
}
}
片段寻呼机适配器：
public class TaDOChooserPagerAdapter extends FragmentPagerAdapter {
private String[] tabTitlesArray;
private Context context;
private FragmentManager fragmentManager;
private HashMap<Integer, String> fragmentTags;
public TaDOChooserPagerAdapter(Context context, FragmentManager fm) {
super(fm);
tabTitlesArray = context.getResources().getStringArray(R.array.chooser_fragment_tab_title_array);
this.context = context;
this.fragmentManager = fm;
this.fragmentTags = new HashMap<>();
}
@Override
public Fragment getItem(int position) {
switch (position){
case 0: return new TaDOChooserTabFragment1();
case 1: return new TaDOChooserTabFragment2();
default: return null;
}
}
@Override
public CharSequence getPageTitle(int position) {
return tabTitlesArray[position];
}
@Override
public int getCount() {
return tabTitlesArray.length;
}
// used for refreshing tabs after they have been loaded - uses onResume method
@Override
public Object instantiateItem(ViewGroup container, int position) {
Object object = super.instantiateItem(container, position);
if (object instanceof Fragment){
//record the fragment tag
Fragment fragment = (Fragment) object;
fragmentTags.put(position, fragment.getTag());
}
return object;
}
public Fragment getFragment(int position){
if(fragmentTags.get(position) == null) return null;
return fragmentManager.findFragmentByTag(fragmentTags.get(position));
}
}