TabLayout和ViewPager实现今日头条效果

一、效果图

二、实现原理

    TabLayout+ViewPager+Fragment

三、实现

 MainActivity.java

public class MainActivity extends AppCompatActivity {
    private TabLayout tablayout;
    private ViewPager viewPager;
    //数据源
    private String[] titles = {"头条", "新闻", "娱乐", "体育", "美女", "科技", "财经", "汽车", "彩票", "国际", "推荐",};

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


        tablayout = (TabLayout) findViewById(R.id.tablayout);
        viewPager = (ViewPager) findViewById(R.id.viewpager);

        MyPagerAdapter myPagerAdapter = new MyPagerAdapter(getSupportFragmentManager());

        viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tablayout));
        viewPager.setAdapter(myPagerAdapter);

        tablayout.setupWithViewPager(viewPager);

		//每条之间的分割线
        LinearLayout linearLayout = (LinearLayout) tablayout.getChildAt(0);

        linearLayout.setShowDividers(LinearLayout.SHOW_DIVIDER_MIDDLE);

        linearLayout.setDividerDrawable(ContextCompat.getDrawable(this,
                R.drawable.layout_divider_vertical));

         //如果要在顶上加入图片
//        for (int i = 0; i < tablayout.getTabCount(); i++) {
//            TabLayout.Tab tab = tablayout.getTabAt(i);
//            tab.setIcon(R.mipmap.ic_launcher);
//        }
    }

    class MyPagerAdapter extends FragmentPagerAdapter {

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

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

        @Override
        public Fragment getItem(int position) {
            TestFragment testFragment = new TestFragment();
            Bundle bundle = new Bundle();
            bundle.putString("title", titles[position]);
            testFragment.setArguments(bundle);
            return testFragment;
        }

        @Override
        public int getCount() {
            return titles.length;
        }
    }
}

activity_main.xml

 

layout_divider_vertical.xml

TestFragment

public class TestFragment extends Fragment {

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        TextView textView = new TextView(getContext());
        textView.setTextColor(Color.WHITE);
        String name = this.getArguments().getString("title");
        textView.setBackgroundColor(Color.rgb((int)(Math.random()*255),(int)(Math.random()*255),(int)(Math.random()*255)));
        textView.setText(name);
        return textView;
    }
}

注意：

  TabLayout属性介绍

        app:tabIndicatorColor="@color/colorPrimary_pink"//指示器的颜色
        app:tabTextColor="@color/colorPrimary_pink"//tab的文字颜色
        app:tabSelectedTextColor="@color/colorPrimary_pinkDark"//选中的tab的文字颜色
        app:tabMode="fixed"//scrollable:可滑动；fixed：不能滑动，平分tabLayout宽度
        app:tabGravity="center"// fill:tabs平均填充整个宽度;center:tab居中显示

Fragment可以按照自己的业务需要更改