Android_横向滑动菜单, HorizontalScrollView,Fragment,Viewpager结合使用

第一:布局

<HorizontalScrollView
    android:id="@+id/hs"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
    <LinearLayout
        android:id="@+id/linearlayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">LinearLayout>
HorizontalScrollView>

<android.support.v4.view.ViewPager
    android:id="@+id/viewpager"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@id/hs">android.support.v4.view.ViewPager>

第二:主页面中

package activity.example.com.a09_12;

import android.graphics.Color;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private String[] titles;
    private List list;
    private HorizontalScrollView hs;
    private LinearLayout linearlayout;
    private ViewPager viewpager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //获取id
        hs = (HorizontalScrollView)findViewById(R.id.hs);
        linearlayout = (LinearLayout)findViewById(R.id.linearlayout);
        viewpager = (ViewPager)findViewById(R.id.viewpager);

        //创建数组,存放标题
        titles = new String[] { "头条", "娱乐", "科技", "信息", "八卦", "北京", "上海", "天津","重庆", "大大燕网" };
        //创建集合,存放textview
        list = new ArrayList();
        //创建textview
        for (int i = 0; i < titles.length; i++) {
            //创建textview
            TextView textView = new TextView(MainActivity.this);
            textView.setText(titles[i]);
            textView.setTextSize(20);
            textView.setId(i+1000);
            //点击事件
            textView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    int id = view.getId();
                    viewpager.setCurrentItem(id-1000);
                }
            });
            //刚进程序第一个默认红色,其他为黑色
            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);
            //添加到布局中
            linearlayout.addView(textView,layoutParams);
            //添加到集合
            list.add(textView);
        }
        //为viewpager设置适配器
        viewpager.setAdapter(new Myadapter(getSupportFragmentManager()));
        //viewpager的监听
        viewpager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            //滑动改变颜色
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
                //list中存的是 textview
                for (int i = 0; i < list.size(); i++) {
                    if(position==i){
                        list.get(i).setTextColor(Color.RED);
                    }else{
                        list.get(i).setTextColor(Color.BLACK);
                    }
                }
                //获取当前的textview
                TextView textView = list.get(position);
                //width是每次滑动的距离
                int width = textView.getWidth()+10;
                //让scrollView滑动   滑动距离是textview之间的间距
                hs.scrollTo(width*position,0);
            }

            @Override
            public void onPageSelected(int position) {

            }

            @Override
            public void onPageScrollStateChanged(int state) {

            }
        });
    }

    class Myadapter extends FragmentPagerAdapter{

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

        @Override
        public Fragment getItem(int position) {
            return Fragment1.getinstance(list.get(position).getText().toString());
        }

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

}

第三:自建Fragment中

package activity.example.com.a09_12;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.media.session.PlaybackStateCompat;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

/**
 * Created by 壹颗大金星 on 2017/9/12.
 */

public class Fragment1 extends Fragment{

    public static Fragment getinstance(String title){
        //创建Fragment1
        Fragment1 fragment1 = new Fragment1();
        //创建bundle
        Bundle bundle = new Bundle();
        //添加值
        bundle.putString("title",title);
        //把值添加到Arguments中
        fragment1.setArguments(bundle);
        return fragment1;
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        //获取Arguments
        Bundle arguments = getArguments();
        //获取值
        String title = arguments.getString("title");
        //创建textview
        TextView textView = new TextView(getActivity());
        //设置值
        textView.setText(title);
        return textView;
    }
}