在Android開(kāi)發(fā)中侮攀，經(jīng)常要使用頂部菜單，如網(wǎng)易新聞迎卤、今日頭條等拴鸵，實(shí)現(xiàn)頂部菜單以前是ViewPager配合PagerTabStrip來(lái)實(shí)現(xiàn)，但Android 5.0以后蜗搔，推薦大家使用MD中的TabLayout來(lái)實(shí)現(xiàn)劲藐，很簡(jiǎn)單哦~~

開(kāi)發(fā)環(huán)境：Android Studio

開(kāi)發(fā)步驟

• 1、在 build.gradle 導(dǎo)入 com.android.support:design:22.2.1
• 2樟凄、Activity布局

<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/tabs"
        android:layout_width="match_parent"
        android:layout_height="48dp" //菜單高度
        android:background="#1FBCD2" //菜單條的背景
        app:tabIndicatorColor="#ff0000" //菜單指示器的顏色
        app:tabMode="scrollable" //菜單可以滾動(dòng)
        app:tabPaddingEnd="20dp" 
        app:tabPaddingStart="20dp" //菜單之間的間距
        app:tabSelectedTextColor="#FFFFFF" //菜單選中時(shí)的顏色
        app:tabTextColor="#000000"> //菜單未選中時(shí)的顏色
    </android.support.design.widget.TabLayout>

    <android.support.v4.view.ViewPager
        android:id="@+id/vp_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

• 3聘芜、Activity代碼

public class MainActivity extends Activity {

    private TabLayout mTabLayout;
    private ViewPager mViewPager;
    private LayoutInflater mInflater;
    private List<String> mTitleList = new ArrayList<String>();//頁(yè)卡標(biāo)題集合
    private View view1, view2, view3, view4, view5, view6, view7, view8;//頁(yè)卡視圖
    private List<View> mViewList = new ArrayList<>();//頁(yè)卡視圖集合

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mViewPager = (ViewPager) findViewById(R.id.vp_view);
        mTabLayout = (TabLayout) findViewById(R.id.tabs);
        mInflater = LayoutInflater.from(this);

        view1 = mInflater.inflate(R.layout.content, null);
        view2 = mInflater.inflate(R.layout.content, null);
        view3 = mInflater.inflate(R.layout.content, null);
        view4 = mInflater.inflate(R.layout.content, null);
        view5 = mInflater.inflate(R.layout.content, null);
        view6 = mInflater.inflate(R.layout.content, null);
        view7 = mInflater.inflate(R.layout.content, null);
        view8 = mInflater.inflate(R.layout.content, null);
        //添加頁(yè)卡視圖
        mViewList.add(view1);
        mViewList.add(view2);
        mViewList.add(view3);
        mViewList.add(view4);
        mViewList.add(view5);
        mViewList.add(view6);
        mViewList.add(view7);
        mViewList.add(view8);
       //添加頁(yè)卡標(biāo)題
        mTitleList.add("頭條");
        mTitleList.add("熱點(diǎn)");
        mTitleList.add("本地");
        mTitleList.add("財(cái)經(jīng)");
        mTitleList.add("科技");
        mTitleList.add("教育");
        mTitleList.add("體育");
        mTitleList.add("笑話(huà)");
       //添加tab選項(xiàng)卡，默認(rèn)第一個(gè)選中
        mTabLayout.addTab(mTabLayout.newTab().setText(mTitleList.get(0)), true);
        mTabLayout.addTab(mTabLayout.newTab().setText(mTitleList.get(1)));
        mTabLayout.addTab(mTabLayout.newTab().setText(mTitleList.get(2)));
        mTabLayout.addTab(mTabLayout.newTab().setText(mTitleList.get(3)));
        mTabLayout.addTab(mTabLayout.newTab().setText(mTitleList.get(4)));
        mTabLayout.addTab(mTabLayout.newTab().setText(mTitleList.get(5)));
        mTabLayout.addTab(mTabLayout.newTab().setText(mTitleList.get(6)));
        mTabLayout.addTab(mTabLayout.newTab().setText(mTitleList.get(7)));


        MyPagerAdapter mAdapter = new MyPagerAdapter(mViewList);
       //給ViewPager設(shè)置適配器
        mViewPager.setAdapter(mAdapter);

       //將TabLayout和ViewPager關(guān)聯(lián)起來(lái)
        mTabLayout.setupWithViewPager(mViewPager);
       //給Tabs設(shè)置適配器
        mTabLayout.setTabsFromPagerAdapter(mAdapter);
    }

    //ViewPager適配器
    class MyPagerAdapter extends PagerAdapter {
        private List<View> mViewList;

        public MyPagerAdapter(List<View> mViewList) {
            this.mViewList = mViewList;
        }

        @Override
        public int getCount() {
            return mViewList.size();//頁(yè)卡數(shù)
        }

        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view == object;//官方推薦寫(xiě)法
        }

        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            container.addView(mViewList.get(position));//添加頁(yè)卡
            return mViewList.get(position);
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            container.removeView(mViewList.get(position));//刪除頁(yè)卡
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return mTitleList.get(position);//頁(yè)卡標(biāo)題
        }

    }

}

• 4缝龄、實(shí)現(xiàn)效果如下

TabLayout.png

• 5汰现、注意點(diǎn)
  如果真的按上面一字不差走下來(lái)的話(huà)，會(huì)發(fā)現(xiàn)TabLayout在ViewPager滑動(dòng)的時(shí)候會(huì)出現(xiàn)菜單文字閃爍的現(xiàn)象叔壤。這個(gè)應(yīng)該是版本的bug瞎饲，想解決的話(huà)使用22.0里沒(méi)有bug的版本（compile 'com.android.support:design:22.2.0'）或者升級(jí)到23.x