未显示TabLayout的选项卡
未显示TabLayout的选项卡
提问于 2015-07-22 00:26:34
我有一个主活动，它托管一个片段，该片段又托管一个TabLayout (带有一个ViewPager)。显示选项卡栏，但不显示选项卡本身。
下面是我在显示主机片段的主活动中的代码：
Fragment fragment = new BMITabsFragment();
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).addToBackStack(Constants.BMI_TABS_FRAGMENT).commit();下面是托管BMITabsFragment (S.A.)的TabLayout的代码片段：
public class BMITabsFragment extends Fragment {
...
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
// Get the ViewPager and set it's PagerAdapter so that it can display items
ViewPager viewPager = (ViewPager) view.findViewById(R.id.viewpager);
viewPager.setAdapter(new BMIFragmentPagerAdapter(getActivity().getSupportFragmentManager(),
getActivity()));
// Give the TabLayout the ViewPager
TabLayout tabLayout = (TabLayout) view.findViewById(R.id.sliding_tabs);
tabLayout.setupWithViewPager(viewPager);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_bmitabs, container, false);
return view;
}
...
}这是我的FragmentPagerAdapter：
public class BMIFragmentPagerAdapter extends FragmentPagerAdapter {
final int PAGE_COUNT = 2;
private FragmentManager fragmentManager;
private Context context;
public BMIFragmentPagerAdapter(FragmentManager fm, Context context) {
super(fm);
this.context = context;
this.fragmentManager = fm;
}
public BMIFragmentPagerAdapter(FragmentManager fm) {
super(fm);
fragmentManager = fm;
}
@Override
public CharSequence getPageTitle(int position) {
String[] pageTitles = context.getResources().getStringArray(R.array.page_titles_array);
return pageTitles[position];
}
@Override
public Fragment getItem(int position) {
SharedPreferences prefs = context.getSharedPreferences(Constants.SHARED_PREFS_FILE, 0);
long patientId = prefs.getLong(Constants.SELECTED_PATIENT_ID, 1);
Fragment fragment = null;
switch (position){
case 0:
return BMITabelleFragment.newInstance(patientId);
case 1:
return BMIChartFragment.newInstance(patientId);
default:
return BMITabelleFragment.newInstance(patientId);
}
}
@Override
public int getCount() {
return PAGE_COUNT;
}
}这是fragment_bmitabs.xml：
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.TabLayout
android:id="@+id/sliding_tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="scrollable" />
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="0px"
android:layout_weight="1"
android:background="@android:color/white" />
</LinearLayout>我的代码是基于https://github.com/codepath/android_guides/wiki/Google-Play-Style-Tabs-using-TabLayout上的Google Android Guide
我在这里错过了什么？
注意:我使用的是AppCompatActivity和支持库v4 & v7以及com:android: support :design库
回答 5
Stack Overflow用户
发布于 2015-07-23 06:00:10
这为我解决了这个问题：
tabLayout.post(new Runnable() {
@Override
public void run() {
tabLayout.setupWithViewPager(viewPager);
}
});Stack Overflow用户
发布于 2015-10-14 21:34:24
在setupWithViewPager()之后设置选项卡图标
private void setTabs {
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
}
private void setupTabIcons() {
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
tabLayout.getTabAt(2).setIcon(tabIcons[2]);
}Stack Overflow用户
发布于 2015-09-16 20:05:47
就像@Nathaniel所说的，这应该是一个bug，我改用设计库23.0.1。谷歌修复了它，所以把build.gradle改成了compile 'com.android.support:design:23.0.1'。ps:您还必须将您的compileSdkVersion更改为23
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/31544617
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