Question

我想要这种类型的设计:: Here Is My design

我的mainactivity.xml只包含一个frameLayout，它由底栏菜单项中的Selected Fragment替换。

它的代码在这里：

b = BottomBar.attach(this,savedInstanceState);
    b.setItemsFromMenu(R.xml.menu_main, new OnMenuTabClickListener() {
        @Override
        public void onMenuTabSelected(@IdRes int menuItemId) {
            if(menuItemId == R.id.BottomBarItemOne){
                PeopleFragment p = new PeopleFragment();
                getSupportFragmentManager().beginTransaction().replace(R.id.frame,p).commit();
            }
            else if(menuItemId == R.id.BottomBarItemTwo){
                LocationFragment l = new LocationFragment();
                getSupportFragmentManager().beginTransaction().replace(R.id.frame,l).commit();
            }
            else if(menuItemId == R.id.BottomBarItemThree){
                HistoryFragment h = new HistoryFragment();
                getSupportFragmentManager().beginTransaction().replace(R.id.frame,h).commit();
            }
            else if(menuItemId == R.id.BottomBarItemFour){
                LikesFragment li = new LikesFragment();
                getSupportFragmentManager().beginTransaction().replace(R.id.frame,li).commit();
            }
        }

现在我想在其中一个Fragment上创建一个tabview：为此，我在必需的片段xml文件中实现工具栏，tablayout和viewpager。我创建了一个单独的java文件，其中包含viewPagerAdapter类。

public class viewPagerAdapter extends FragmentPagerAdapter {

ArrayList<Fragment> fragments = new ArrayList<>();
ArrayList<String> tabTitles = new ArrayList<>();

   public void addFragment(Fragment fragment,String tabTitle){
      fragments.add(fragment);
      tabTitles.add(tabTitle);
   }

   public viewPagerAdapter(FragmentManager fm) {
      super(fm);
   }

   @Override
   public Fragment getItem(int position) {
       return fragments.get(position);
    }

   @Override
   public int getCount() {
      return fragments.size();
   }

   @Override
   public CharSequence getPageTitle(int position) {
      return tabTitles.get(position);
   }
}

现在我想添加此代码来实现tablayout ::

 toolbar = (Toolbar) findViewById(R.id.toolBar);
    setSupportActionBar(toolbar);

    tabLayout = (TabLayout) findViewById(R.id.tabLayout);
    viewPager = (ViewPager) findViewById(R.id.viewPager);

    viewPagerAdapter = new viewPagerAdapter(getSupportFragmentManager());
    viewPagerAdapter.addFragment(new HomeFragment(),"Home");
    viewPagerAdapter.addFragment(new MessageFragment(),"Message");
    viewPagerAdapter.addFragment(new ContectFragment(),"Contect");
    viewPager.setAdapter(viewPagerAdapter);
    tabLayout.setupWithViewPager(viewPager);

在Fragment的onCreate方法中给出::

public class HomeFragment extends Fragment {


    public HomeFragment() {
       // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

       // TabLyout Code Here

        return inflater.inflate(R.layout.fragment_home, container, false);
    }
 }

但Android Studio不允许在Fragment中使用Tablayout Fragment代码我能做什么？如何在其中一个片段中实现tablayout？

Answer 1

尝试以下方法：根据您的要求将其添加到您的片段布局中。

 <android.support.design.widget.TabLayout
            android:id="@+id/tab_layout"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="50dp"
            android:minHeight="?attr/actionBarSize"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            app:tabIndicatorColor="@color/tab_indicator"
            app:tabIndicatorHeight="2.5dp"
            app:tabPaddingBottom="-1dp"
            app:tabPaddingEnd="-1dp"
            app:tabPaddingStart="-1dp"
            app:tabPaddingTop="-1dp"
            app:tabBackground="@color/white"/>

为要显示的标签创建一个模型。

现在在片段中添加以下代码：

this.navigationData = new ArrayList<>();
this.navigationData.add(new MainNavigationViewModel("TAB-1",     R.drawable.TAB-1, R.drawable.TAB-1, true));
this.navigationData.add(new MainNavigationViewModel("TAB-2", R.drawable.TAB-2, R.drawable.TAB-2, false));
this.navigationData.add(new MainNavigationViewModel("TAB-3", R.drawable.TAB-3, R.drawable.TAB-23, false));

for (MainNavigationViewModel vm : this.navigationData) {
    tabLayout.addTab(tabLayout.newTab().setCustomView(ViewHelper.buildTabWithText(getContext(), vm.getText(), vm.getIsSelected())));
}
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

adapter = new MainFragmentPagerAdapter(getChildFragmentManager(), tabLayout.getTabCount());
viewPager.setAdapter(adapter);

现在创建像这样的FragmentPagerAdapter（新类）。

 public class MainFragmentPagerAdapter extends FragmentPagerAdapter {
private static final Fragment[] fragments = new Fragment[] {
        LiveFeedFragment.getInstance(),
        GroupsFragment.getInstance(),
        NewsFragment.getInstance()
};
int mNumOfTabs;

public MainFragmentPagerAdapter(FragmentManager fm, int NumOfTabs) {
    super(fm);
    this.mNumOfTabs = NumOfTabs;
}

@Override
public int getItemPosition(Object object) {
    return POSITION_NONE;
}

@Override
public Fragment getItem(int position) {
    return fragments[position];
    }

@Override
public int getCount() {
    return mNumOfTabs;
}

}

以这种方式访问片段。

如何在底栏的一个片段中实现tabview？

1 个答案: