HorizontalScrollView随页面滑动

来源：互联网发布：聊天软件数据库设计编辑：程序博客网时间：2024/05/15 11:38

效果展示：
这里写图片描述
首先看activity_main中的布局

  <LinearLayout         android:layout_width="match_parent"        android:layout_height="35dp"        android:orientation="horizontal">        <HorizontalScrollView          android:id="@+id/Nav_Hsv"         android:layout_width="0dp"         android:layout_weight="9"         android:layout_height="35dp"         android:fillViewport="false">             <LinearLayout                   android:id="@+id/Nav_ll"                  android:layout_width="wrap_content"                  android:layout_height="wrap_content"                  android:background="#eee"                  android:orientation="horizontal">                   </LinearLayout>        </HorizontalScrollView></LinearLayout><android.support.v4.view.ViewPager     android:id="@+id/vp"     android:layout_width="match_parent"     android:layout_height="0dp"     android:layout_weight="1"/>

再看Activity里的具体实现

public class ShouActivity extends FragmentActivity {    private List<String> type;    private int screenWidth;    private int itemWidth;    private int selectItemIndex = 0;    private LinearLayout nav_ll;    private ViewPager vp;    private HorizontalScrollView hsv;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_main);        type = MyTools.getType();        hsv = (HorizontalScrollView) findViewById(R.id.Nav_Hsv);        hsv.setHorizontalScrollBarEnabled(false);        nav_ll = (LinearLayout) findViewById(R.id.Nav_ll);        vp = (ViewPager) findViewById(R.id.vp);        //设置导航栏菜单        setNav();        //设置viewpager        setViewPager();    }    //设置viewpager    private void setViewPager() {        // 实例化list集合存放fragment        List<Fragment> fragmentList = new ArrayList<Fragment>();        //获取map集合中的数据，遍历集合        Map<String, String> data = MyTools.getData();        for(Map.Entry<String, String> entry : data.entrySet()){            //获取集合中的value值，这里指的是接口地址            MyFragment frame = new MyFragment(entry.getValue());            //放入集合            fragmentList.add(frame);        }        //设置viewpager适配器        vp.setAdapter(new MyFragmentpagerAdapter(getSupportFragmentManager(),fragmentList));        //设置viewpager监听        vp.setOnPageChangeListener(new OnPageChangeListener() {            @Override            public void onPageSelected(int position) {                vp.setCurrentItem(position);                selectType(position);            }            @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            }        });    }    private void setNav() {        //获得屏幕总宽度        DisplayMetrics metrics = new DisplayMetrics();        getWindowManager().getDefaultDisplay().getMetrics(metrics);        screenWidth = metrics.widthPixels;        //设置每个item的宽度        itemWidth = screenWidth/type.size();        for(int i=0;i<type.size();i++){            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(                    RadioGroup.LayoutParams.WRAP_CONTENT, RadioGroup.LayoutParams.WRAP_CONTENT);            //设置外边距            params.leftMargin = 10;            params.rightMargin = 10;            //创建Textview实例            TextView localTextView = new TextView(this);            //设置tv的属性            localTextView.setText(type.get(i));            localTextView.setTextSize(15.0f);            localTextView.setPadding(5, 9, 5, 9);            localTextView.setGravity(Gravity.CENTER);            if(i == 0){                localTextView.setTextColor(Color.RED);            }else{                localTextView.setTextColor(Color.parseColor("#666666"));            }            if(selectItemIndex == i){                localTextView.setSelected(true);            }            //设置每个tv的监听            localTextView.setOnClickListener(new OnClickListener() {                @Override                public void onClick(View v) {                    for(int i=0;i<nav_ll.getChildCount();i++){                        TextView tv = (TextView) nav_ll.getChildAt(i);                        if(tv == v){                            tv.setSelected(true);                            vp.setCurrentItem(i);                        }else{                            tv.setSelected(false);                        }                    }                }            });            nav_ll.addView(localTextView, i, params);        }    }    protected void selectType(int tab_position) {        selectItemIndex = tab_position;        //通过自动滚动        for(int i=0;i<nav_ll.getChildCount();i++){            TextView tv0 = (TextView) nav_ll.getChildAt(tab_position);            int k = tv0.getMeasuredWidth();            int l = tv0.getLeft();            int j = l+k/2-screenWidth/2;//计算要滚动到的位置            hsv.smoothScrollTo(j, 0);        }        //判断哪一个tv被选中设置字体颜色        for(int i=0;i<nav_ll.getChildCount();i++){            TextView view = (TextView) nav_ll.getChildAt(i);            if(tab_position == i){                view.setTextColor(Color.RED);                view.setSelected(true);            }else{                view.setTextColor(Color.parseColor("#666666"));                view.setSelected(false);            }        }    }}

MyTools.java

public class MyTools {    public static Map<String,String> getData(){        Map<String,String> map = new LinkedHashMap<String, String>();        map.put("推荐", "http://ic.snssdk.com/2/article/v25/stream/?category=news_world&count=20&min_behot_time=1457664837&bd_city=%E5%8C%97%E4%BA%AC%E5%B8%82&bd_latitude=40.040363&bd_longitude=116.299497&bd_loc_time=1457665192&loc_mode=6&iid=3839775475&device_id=12246433856&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=HONOR%20H30-L02&os_api=19&os_version=4.4.2&uuid=864503020467518&openudid=58561e2e62ae7a9d");        map.put("热点", "http://ic.snssdk.com/2/article/v25/stream/?category=news_hot&count=20&min_behot_time=1457678235&bd_city=%E5%8C%97%E4%BA%AC%E5%B8%82&bd_latitude=40.040344&bd_longitude=116.299473&bd_loc_time=1457746072&loc_mode=6&iid=3839775475&device_id=12246433856&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=HONOR%20H30-L02&os_api=19&os_version=4.4.2&uuid=864503020467518&openudid=58561e2e62ae7a9d");        map.put("北京", "http://lf.snssdk.com/2/article/v25/stream/?category=news_local&count=20&min_behot_time=1457679653&loc_mode=4&user_city=%E5%8C%97%E4%BA%AC&lac=4530&cid=28615&iid=3840045724&device_id=12248484527&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=MX5&os_api=22&os_version=5.1&uuid=868773026086424&openudid=8731cb97031b705c");        map.put("社会", "http://ic.snssdk.com/2/article/v25/stream/?category=news_society&count=20&min_behot_time=1457665368&bd_latitude=4.9E-324&bd_longitude=4.9E-324&bd_loc_time=1457678205&loc_mode=5&lac=4527&cid=28883&iid=3837100257&device_id=12226275484&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=iToolsAVM&os_api=19&os_version=4.4.4&uuid=352284046469130&openudid=84c1c7b192991cc6");        map.put("娱乐", "http://ic.snssdk.com/2/article/v25/stream/?category=news_entertainment&count=20&min_behot_time=1457661848&bd_city=%E5%8C%97%E4%BA%AC%E5%B8%82&bd_latitude=40.040344&bd_longitude=116.299473&bd_loc_time=1457746072&loc_mode=6&iid=3839775475&device_id=12246433856&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=HONOR%20H30-L02&os_api=19&os_version=4.4.2&uuid=864503020467518&openudid=58561e2e62ae7a9d");        map.put("科技", "http://ic.snssdk.com/2/article/v25/stream/?category=news_tech&count=20&min_behot_time=1457664599&bd_city=%E5%8C%97%E4%BA%AC%E5%B8%82&bd_latitude=40.040344&bd_longitude=116.299473&bd_loc_time=1457746072&loc_mode=6&iid=3839775475&device_id=12246433856&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=HONOR%20H30-L02&os_api=19&os_version=4.4.2&uuid=864503020467518&openudid=58561e2e62ae7a9d");        map.put("体育", "http://ic.snssdk.com/2/article/v25/stream/?category=news_sports&count=20&bd_city=%E5%8C%97%E4%BA%AC%E5%B8%82&bd_latitude=40.040344&bd_longitude=116.299473&bd_loc_time=1457746072&loc_mode=6&iid=3839775475&device_id=12246433856&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=HONOR%20H30-L02&os_api=19&os_version=4.4.2&uuid=864503020467518&openudid=58561e2e62ae7a9d");        map.put("视频", "http://ic.snssdk.com/2/article/v25/stream/?category=video&count=20&bd_latitude=4.9E-324&bd_longitude=4.9E-324&bd_loc_time=1457678205&loc_mode=5&lac=4527&cid=28883&iid=3837100257&device_id=12226275484&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=iToolsAVM&os_api=19&os_version=4.4.4&uuid=352284046469130&openudid=84c1c7b192991cc6");        map.put("财经", "http://lf.snssdk.com/2/article/v25/stream/?category=news_finance&count=20&loc_mode=4&iid=3839898905&device_id=10679574422&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=MX5&os_api=22&os_version=5.1&uuid=867992020732921&openudid=db1bf632ed3a9c71");        return map;    }    public static List<String> getType(){        List<String> typelist = Arrays.asList("推荐", "热点", "北京","社会", "娱乐", "科技","体育","视频","财经");        return typelist;    }}

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