Detailed explanation of Android HorizontalScrollView swiping and ViewPager switching case

<RelativeLayout xmlns:andro
    xmlns:tools="/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <HorizontalScrollView
        android:
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:scrollbars="none" >

        <LinearLayout
            android:
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >
        </LinearLayout>
    </HorizontalScrollView>

    <LinearLayout
        android:
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/sc"
      />

    <.
        android:
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/view" >
    </.>

</RelativeLayout>

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public class MainActivity extends FragmentActivity {

    private LinearLayout line_sc;
    private HorizontalScrollView sc;
    private String[] column = new String[] { "Best News", "Introduction to our company", "Perform functions", "Own construction",
            "Member style", "Self-introduction", "Interesting News on School", "Revelation" };
    private ArrayList<Fragment> list;
    private ViewPager vp;
    private int widthPixels;
    private ArrayList<TextView> list_view;

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

        /**
          * Get the width of the window
          */
        // Create DisplayMetrics class object        DisplayMetrics dm = new DisplayMetrics();
        // Put some information in the current window in the DisplayMetrics class        getWindowManager().getDefaultDisplay().getMetrics(dm);
        widthPixels = ;     
        // Initialize the data        init();
        // Get column data        getColumn();
        // Create fragment data        setFragment();
        // Set data for vp        FragmentManager fm = getSupportFragmentManager();
        (new MyAdapter(fm, list));        
        setTitle_1(());

        // Set page sliding monitoring for vp        (new OnPageChangeListener() {

            @Override
            public void onPageSelected(int arg0) {               
                //Set cursor                setTitle_1(arg0);               
                //Set swipe                setAutoScroll(arg0);
            }
        
            @Override
            public void onPageScrolled(int arg0, float arg1, int arg2) {
                // TODO Auto-generated method stub
            }
            @Override
            public void onPageScrollStateChanged(int arg0) {
                // TODO Auto-generated method stub
            }
        });

    }

    protected void setAutoScroll(int p) {
        // TODO Auto-generated method stub
        
        //Get the cursor you want to display currently        TextView textView = list_view.get(p);
        //Get its width        int w = ();
        int left = ();
        int address=left-widthPixels/2;       
        (address, 0);                  
    }

    private void setFragment() {
        // Create a collection to store fragment objects        list = new ArrayList<Fragment>();
        for (int i = 0; i < ; i++) {
            F1 f1 = new F1();
            // Pass the value            Bundle b = new Bundle();
            ("column", i);
            (b);
            // Add the created fragment to the collection            (f1);
        }
    }
    private void setTitle_1(int arg0) {
        //Set the currently displayed textview control        TextView textView = list_view.get(arg0);
        //Show the current textview        ();     
        for(int i=0;i<list_view.size();i++)
        {
            TextView tv = list_view.get(i);
            
            if(tv!=textView)
            {
                ();
            }
        }
    }
    private void getColumn() {
        // TODO Auto-generated method stub
        list_view = new ArrayList<TextView>();
        for (int i = 0; i < ; i++) {
            // Create a linear layout as a sub-layout for horizontal scrolling as a whole            LinearLayout sc = new LinearLayout();
            // Set the arrangement method of linear layout (vertical)            (1);
            (30, 0, 0, 0);
            // 1. First add textview to the linear layout            // Create textview            TextView tv = new TextView();
            // Set data for tv            (column[i]);
             params = new LayoutParams(
                    widthPixels / 5, LayoutParams.WRAP_CONTENT);
            (tv, params);

            // 2. Add the following horizontal lines to the linear layout            TextView tv_line = new TextView();
             params_2 = new LayoutParams(
                    widthPixels / 5, 10);
            tv_line.setBackgroundColor();
            tv_line.setVisibility();
            list_view.add(tv_line);
            (tv_line, params_2);

            // Add data to linear layout            line_sc.addView(sc);
        }

    }

    private void init() {
        line_sc = (LinearLayout) findViewById(.line_sc);
        sc = (HorizontalScrollView) findViewById();
        vp = (ViewPager) findViewById();
    }
}

FragmentManager fm = getSupportFragmentManager();
        (new MyFragmentAdapter(fm, getData()));
        (new OnPageChangeListener() {

            public void onPageSelected(int arg0) {
                // TODO Auto-generated method stub
                setTag(arg0);
            }

            public void onPageScrolled(int arg0, float arg1, int arg2) {
                // TODO Auto-generated method stub
            }

            public void onPageScrollStateChanged(int arg0) {
                // TODO Auto-generated method stub

            }
        });

public ArrayList<Fragment> getData() {

        ArrayList<Fragment> list = new ArrayList<Fragment>();
        for (int i = 0; i < ; i++) {
            (new F1(str[i]));
        }
        return list;
    }

    private void setData() {
        // TODO Auto-generated method stub
        List<String> list = new ArrayList<String>();
        for (int i = 0; i < ; i++) {
            View view = (,
                    .simple_list_item_1, null);
            TextView textView = (TextView) view
                    .findViewById(.text1);
            (str[i]);
            ((i));
            scroll_ly.addView(view);

            (i);
            (this);
        }
        TextView childAt = (TextView) scroll_ly.getChildAt(0);
        // ();
        ();
        ();
    }

// Set changes in textview in scrollview    public void setTag(int position) {
        for (int i = 0; i < scroll_ly.getChildCount(); i++) {
            /**
              * The position of textView sliding
              */
            // Get the current subclass of viewpager sliding of the textview            TextView textView = (TextView) scroll_ly.getChildAt(position);
            int k = ();
            int l = ();
            int s = k / 2 + l - wid / 2;
            // Set the distance of scrollView x-axis            (s, 0);
            /**
              * textview slides and changes color
              */
            TextView textView2 = (TextView) scroll_ly.getChildAt(i);
            if (position == i) {
                ();
                ();
            } else {
                ();
                ();
            }

        }
    }

    public void onClick(View v) {
        // TODO Auto-generated method stub
        if (() != null) {
            int i = (Integer) ();
            View childAt = scroll_ly.getChildAt(i);
            if (v == childAt) {
                (i);
            }
        }
    }