Android tablayout+fragment

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按照惯例, 先上一下效果图

上面就是效果图,布局估计大佬们已经看出来了,就一个tablayout+viewepager。我们看一下xml代码:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="www.tablayout.com.tablayoutdemo.MainActivity">    <!--    app:tabIndicatorColor="@color/white"    // 下方滚动的下划线颜色    app:tabSelectedTextColor="@color/gray"  // tab被选中后，文字的颜色    app:tabTextColor="@color/white"         // tab默认的文字颜色    app:tabMode="scrollable"                //设置标题滑动模式    -->    <android.support.design.widget.TabLayout        android:id="@+id/tablayout"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:background="@android:color/holo_blue_light"        app:tabIndicatorColor="@android:color/holo_red_dark"        app:tabSelectedTextColor="@android:color/holo_red_dark"        app:tabTextColor="@android:color/background_dark"        />    <android.support.v4.view.ViewPager        android:id="@+id/viewpager"        android:layout_width="match_parent"        android:layout_height="0dp"        android:layout_weight="1" /></LinearLayout>

，代码中注释的 tabMode=“scrollable”是设置tablayoput可以自由地左右滑动~,上面注释都说明了,就不说了~我们看一下Mainactivity，

public class MainActivity extends FragmentActivity {    private List<Fragment> fragmentList = new ArrayList<>();    private ViewPager viewPager;    private TabLayout tabLayout;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initData();        //第一步：初始化ViewPager并设置adapter        viewPager = (ViewPager) findViewById(R.id.viewpager);        viewPager.setAdapter(new MyViewPagerAdapter(getSupportFragmentManager(), fragmentList));        //第二步：初始化Tablayout，给ViewPager设置标题（选项卡）        tabLayout = (TabLayout) findViewById(R.id.tablayout);        tabLayout.addTab(tabLayout.newTab().setText("UFC"));//添加tab选项卡        tabLayout.addTab(tabLayout.newTab().setText("武林风"));        tabLayout.addTab(tabLayout.newTab().setText("昆仑决"));        //第三步：关联ViewPager        tabLayout.setupWithViewPager(viewPager);        //在关联ViewPager之后添加如下代码，前三步不用更改        tabLayout.getTabAt(0).setText("UFC");        tabLayout.getTabAt(1).setText("武林风");        tabLayout.getTabAt(2).setText("昆仑决");    }    private void initData() {        fragmentList.add(new PagerFragment1());        fragmentList.add(new PagerFragment2());        fragmentList.add(new PagerFragment3());    }}

代码都有注释,,,就不说了,我们看一下适配器的代码,

public class MyViewPagerAdapter extends FragmentPagerAdapter{    private final List<Fragment> fragmentList;    public MyViewPagerAdapter(FragmentManager fm, List<Fragment> fragmentList) {        super(fm);        this.fragmentList=fragmentList;    }    @Override    public Fragment getItem(int position) {        return fragmentList.get(position);    }    @Override    public int getCount() {        return fragmentList.size();    }}

看下其中一个fragment的代码：

public class PagerFragment1 extends Fragment{    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {        View view = View.inflate(getActivity(), R.layout.layout_fragment, null);        TextView tv= (TextView) view.findViewById(R.id.textView);        tv.setText("UFC");        return view;    }}

源码(tablauyoutdemo)

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