
我的主要活动
XML
<androID.support.design.Widget.CoordinatorLayout xmlns:androID="http://schemas.androID.com/apk/res/androID" xmlns:app="http://schemas.androID.com/apk/res-auto" androID:ID="@+ID/activity_main" androID:layout_wIDth="match_parent" androID:layout_height="match_parent"> <androID.support.design.Widget.AppbarLayout androID:layout_wIDth="match_parent" androID:layout_height="wrap_content" androID:theme="@style/themeOverlay.AppCompat.Dark.Actionbar"> <androID.support.design.Widget.TabLayout androID:ID="@+ID/tabs" androID:layout_wIDth="match_parent" androID:layout_height="wrap_content" app:tabMode="fixed" app:tabGravity="fill"/> </androID.support.design.Widget.AppbarLayout> <androID.support.v4.vIEw.VIEwPager androID:ID="@+ID/vIEwpager" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" app:layout_behavior="@string/appbar_scrolling_vIEw_behavior" /></androID.support.design.Widget.CoordinatorLayout>
码
public class MainActivity extends AppCompatActivity { private TabLayout tabLayout; private final static int[] tabIcons = { R.drawable.ic_tab_1,R.drawable.ic_tab_2,R.drawable.ic_tab_3,R.drawable.ic_tab_4 }; @OverrIDe protected voID onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentVIEw(R.layout.activity_main); VIEwPager vIEwPager = (VIEwPager) findVIEwByID(R.ID.vIEwpager); setupVIEwPager(vIEwPager); tabLayout = (TabLayout) findVIEwByID(R.ID.tabs); 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]); tabLayout.getTabAt(3).setIcon(tabIcons[3]); } private voID setupVIEwPager(VIEwPager vIEwPager) { VIEwPagerAdapter adapter = new VIEwPagerAdapter(getSupportFragmentManager()); adapter.addFrag(new Fragment1()); adapter.addFrag(new Fragment2()); adapter.addFrag(new Fragment3()); adapter.addFrag(new Fragment4()); vIEwPager.setAdapter(adapter); } class VIEwPagerAdapter extends FragmentPagerAdapter { private final List<Fragment> mFragmentList = new ArrayList<>(); VIEwPagerAdapter(FragmentManager manager) { super(manager); } @OverrIDe public Fragment getItem(int position) { return mFragmentList.get(position); } @OverrIDe public int getCount() { return mFragmentList.size(); } voID addFrag(Fragment fragment) { mFragmentList.add(fragment); } }} 片段
XML
<?xml version="1.0" enCoding="utf-8"?><relativeLayout xmlns:androID="http://schemas.androID.com/apk/res/androID" xmlns:tools="http://schemas.androID.com/tools" androID:background="@androID:color/holo_blue_light" androID:ID="@+ID/fragment_1" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:paddingBottom="@dimen/activity_vertical_margin" androID:paddingleft="@dimen/activity_horizontal_margin" androID:paddingRight="@dimen/activity_horizontal_margin" androID:paddingtop="@dimen/activity_vertical_margin" tools:context="myContext"> <TextVIEw androID:text="It is just a text." androID:layout_wIDth="wrap_content" androID:layout_height="wrap_content" androID:ID="@+ID/textVIEw" androID:layout_centerVertical="true" androID:layout_centerHorizontal="true" /></relativeLayout>
码
public class Fragment1 extends Fragment { public Fragment1() { } @OverrIDe public VIEw onCreateVIEw(LayoutInflater inflater,VIEwGroup container,Bundle savedInstanceState) { // Inflate the layout for this fragment. return inflater.inflate(R.layout.fragment_1,container,false); }} Fragment2_A和Fragment2_B XML和Java代码应该如何?
解决方法 好的,所以在你的片段中你只有TextVIEw.现在对于fragment_2,放入另一个TabLayout和VIEwPager(你不需要Appbar和Coordinator,它们将从Activity的父布局中出现)frag2.xml
<linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID" xmlns:app="http://schemas.androID.com/apk/res-auto" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:orIEntation="vertical"> <androID.support.design.Widget.TabLayout androID:ID="@+ID/frag2_tabs" androID:layout_wIDth="match_parent" androID:layout_height="wrap_content" app:tabMode="fixed" app:tabGravity="fill"/> <androID.support.v4.vIEw.VIEwPager androID:ID="@+ID/frag2_vIEwpager" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" /></linearLayout>
你必须在OnCreateVIEw中创建Frag2 Fragment,init和上面的布局,然后为frag2_vIEwpager创建VIEwPager类,为frag2a.xml和frag2b.xml片段设置另一个适配器,他们可能只假设TextVIEws或其他什么. TabLayout将被放置在Frag2内部(和活动中的一个在pic上)
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