TabLayout -----------簡單使用

這裏邊用的是tablayout+viewpager

XML:

<android.support.design.widget.TabLayout
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:id="@+id/tab_layout"
    app:tabSelectedTextColor="#d43c3c"
    app:tabIndicatorColor="#d43c3c"
    />
    <android.support.v4.view.ViewPager
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />

Activity:

public class MainActivity extends AppCompatActivity {
    private TabLayout tabLayout;
    private ViewPager viewPager;
    private String [] mTitle = {"條目一","條目二","條目三","條目四","條目五","條目六","條目氣","條目八","條目九"};
    private List<Fragment> mList = new ArrayList<>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tabLayout = findViewById(R.id.tab_layout);
        viewPager = findViewById(R.id.view_pager);
        for (int a = 0;a<mTitle.length;a++){
            mList.add(new Main2Activity());
        }
        MypageAdpter adpter = new MypageAdpter(getSupportFragmentManager());
        viewPager.setAdapter(adpter);
        tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
        tabLayout.setupWithViewPager(viewPager);

    }
    private class MypageAdpter extends FragmentPagerAdapter{

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

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

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

        @Nullable
        @Override
        public CharSequence getPageTitle(int position) {
            return mTitle[position];
        }
    }
}