今日头条栏

private ViewPager vp;private HorizontalScrollView hsv;private LinearLayout ll;String []titles = new String[] { "头条", "社会", "国内", "国际", "娱乐", "体育", "军事", "科技",        "财经", "时尚" };List<TextView> list = new ArrayList<>();private MAdapter mAdapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    hsv = (HorizontalScrollView) findViewById(R.id.hsv);    ll = (LinearLayout) findViewById(R.id.ll);    vp = (ViewPager) findViewById(R.id.vp);    for (int i = 0; i <titles.length ; i++) {        TextView textView = new TextView(MainActivity.this);        textView.setText(titles[i]);        textView.setTextSize(20);        textView.setId(i+1000);        textView.setOnClickListener(this);        if(i==0){            textView.setTextColor(Color.RED);        }else{            textView.setTextColor(Color.BLACK);        }        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);        layoutParams.setMargins(20,10,20,10);        ll.addView(textView,layoutParams);        list.add(textView);    }    //设置适配器    mAdapter = new MAdapter(getSupportFragmentManager());    vp.setAdapter(mAdapter);    vp.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {        @Override        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {            for (int i = 0; i <list.size() ; i++) {                if(position==i){                    list.get(i).setTextColor(Color.RED);                }else{                    list.get(i).setTextColor(Color.BLACK);                }            }            TextView textView = list.get(position);            int width = textView.getWidth();            hsv.scrollTo((width+20)*position,0);           /* MyFrag.getfragment(position);            mAdapter.notifyDataSetChanged();*/        }        @Override        public void onPageSelected(int position) {        }        @Override        public void onPageScrollStateChanged(int state) {        }    });}class MAdapter extends FragmentPagerAdapter{    public MAdapter(FragmentManager fm) {        super(fm);    }    @Override    public Fragment getItem(int position) {        return MyFrag.getfragment(position);    }    @Override    public int getCount() {        return list.size();    }}//TextView的点击事件@Overridepublic void onClick(View view) {    Log.e("wzq", "onClick: ");    int id = view.getId();    vp.setCurrentItem(id-1000);    /*MyFrag.getfragment(id-1000);    mAdapter.notifyDataSetChanged();*/}