21 viewPager--- hzScrollView ----llContainer

来源：互联网发布：指针数组初始化 null 编辑：程序博客网时间：2024/05/29 15:57

结构:
这里写图片描述

MainActivity.java

package com.qf.day21_hsviewpagerfragment_demo5;import java.util.ArrayList;import java.util.List;import android.graphics.Color;import android.os.Bundle;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentPagerAdapter;import android.support.v4.view.ViewPager;import android.support.v4.view.ViewPager.OnPageChangeListener;import android.view.Gravity;import android.view.View;import android.view.View.OnClickListener;import android.widget.HorizontalScrollView;import android.widget.LinearLayout;import android.widget.TextView;public class MainActivity extends FragmentActivity {    private ViewPager viewPager;    private HorizontalScrollView hzScrollView;    private LinearLayout llContainer;    private String[] titles ;    private List<Fragment> list = new ArrayList<Fragment>();    private TextView[] tvs;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //初始化View        initView();        //初始化VIewPager        initViewPager();        //初始化导航书签        initTab();    }    public void initTab(){        tvs = new TextView[titles.length];        for(int i=0;i<titles.length;i++){            TextView tv = new TextView(getApplicationContext());            tv.setText("       "+titles[i]);            tv.setTextSize(20);            tv.setTextColor(Color.BLUE);            tv.setGravity(Gravity.CENTER);            tv.setEnabled(true);            tv.setTag(i);            tv.setOnClickListener(new OnClickListener() {                @Override                public void onClick(View v) {                    // TODO Auto-generated method stub                    viewPager.setCurrentItem((Integer)v.getTag());                }            });            tvs[i] = tv;            llContainer.addView(tv);            tvs[0].setEnabled(false);            tvs[0].setTextColor(Color.RED);        }    }    public void initViewPager(){        //获取标题数据        titles = getResources().getStringArray(R.array.titles);        for(int i=0;i<titles.length;i++){            MyFragment myFragment = MyFragment.getInstance(i+1);            list.add(myFragment);        }        viewPager.setAdapter(new MyAdapter(getSupportFragmentManager()));        viewPager.setOnPageChangeListener(new OnPageChangeListener() {            @Override            public void onPageSelected(int pos) {                //ViewPager 绑定  书签                setCurrentView(pos);            }            @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            }        });    }    //滑动ViewPager时   书签也到相应的位置   屏幕中心位置    public  void  setCurrentView(int pos){        for(int i=0;i<titles.length;i++){            tvs[i].setEnabled(true);            tvs[i].setTextColor(Color.BLUE);        }        tvs[pos].setEnabled(false);        tvs[pos].setTextColor(Color.RED);        int screenWidth = getResources().getDisplayMetrics().widthPixels;        //假设当前 pos书签  在中间位置        int leftlength = (screenWidth-tvs[pos].getWidth())/2;        //获取偏移量        int offsetLength = tvs[pos].getLeft()-leftlength;        //hzScrollView 进行移动    参数1:水平偏移量   参数2:垂直偏移量        hzScrollView.smoothScrollTo(offsetLength, 0);    }    public void initView() {        viewPager = (ViewPager) findViewById(R.id.viewPager);        hzScrollView = (HorizontalScrollView) findViewById(R.id.hzScrollView);        llContainer = (LinearLayout) findViewById(R.id.ll_container);    }    public class MyAdapter extends FragmentPagerAdapter{        public MyAdapter(FragmentManager fm) {            super(fm);        }        @Override        public Fragment getItem(int arg0) {            // TODO Auto-generated method stub            return list.get(arg0);        }        @Override        public int getCount() {            // TODO Auto-generated method stub            return list.size();        }    }}

MyFragment.java

package com.qf.day21_hsviewpagerfragment_demo5;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.app.Activity;import android.os.Bundle;import android.support.v4.app.ListFragment;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.SimpleAdapter;import android.widget.TextView;public class MyFragment extends ListFragment {    private  TextView tvShow;    private int index =0;    public static MyFragment getInstance(int index){        MyFragment myFragment = new MyFragment();        Bundle args = new Bundle();        args.putInt("index", index);        myFragment.setArguments(args);        return myFragment;    }    @Override    public void onAttach(Activity activity) {        // TODO Auto-generated method stub        super.onAttach(activity);        Bundle bundle = getArguments();        if(bundle!=null){            index = bundle.getInt("index");        }    }    @Override    public void onCreate(Bundle savedInstanceState) {        // TODO Auto-generated method stub        super.onCreate(savedInstanceState);    }    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container,            Bundle savedInstanceState) {        // TODO Auto-generated method stub        View v = inflater.inflate(R.layout.fragment_layout, container, false);        tvShow = (TextView) v.findViewById(R.id.tv_show);        return v;    }    @Override    public void onActivityCreated(Bundle savedInstanceState) {        // TODO Auto-generated method stub        super.onActivityCreated(savedInstanceState);        switch (index) {        case 1:            tvShow.setText("您点击了书签1");            break;        case 2:            tvShow.setText("您点击了书签2");            break;        case 3:            tvShow.setText("您点击了书签3");            break;        case 4:            tvShow.setText("您点击了书签4");            break;        default:            break;        }        SimpleAdapter adapter = new SimpleAdapter(                getActivity(),                 loadNetWorkData(),                 R.layout.item,                 new String[]{"icon","title","content"},                 new int[]{R.id.iv_item,R.id.title_item,R.id.content_item});        setListAdapter(adapter);    }    /**     * 假设从网络获取数据     * @return     */    private List<Map<String,Object>> loadNetWorkData(){        List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();        for(int i=0;i<20;i++){            Map<String, Object> map = new HashMap<String, Object>();            map.put("icon", R.drawable.ic_launcher);            map.put("title", "郭XX大战曹XXX"+i+"tab"+index);            map.put("content", "降龙十八掌赢"+i+"tab"+index);            list.add(map);        }        return list;    }    @Override    public void onStart() {        // TODO Auto-generated method stub        super.onStart();    }    @Override    public void onResume() {        // TODO Auto-generated method stub        super.onResume();    }    @Override    public void onPause() {        // TODO Auto-generated method stub        super.onPause();    }    @Override    public void onStop() {        // TODO Auto-generated method stub        super.onStop();    }    @Override    public void onDestroyView() {        // TODO Auto-generated method stub        super.onDestroyView();        Log.e("AAA", "==onDestroyView=>");    }    @Override    public void onDestroy() {        // TODO Auto-generated method stub        super.onDestroy();        Log.e("AAA", "==onDestroy=>");    }    @Override    public void onDetach() {        // TODO Auto-generated method stub        super.onDetach();        Log.e("AAA", "==onDetach=>");    }    //show() hide()  走当前的方法    @Override    public void onHiddenChanged(boolean hidden) {        // TODO Auto-generated method stub        super.onHiddenChanged(hidden);        Log.e("AAA", "==onHiddenChanged=>");    }}

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context=".MainActivity" >    <HorizontalScrollView        android:id="@+id/hzScrollView"         android:layout_width="match_parent"        android:layout_height="wrap_content"        android:scrollbars="none"        >        <LinearLayout             android:id="@+id/ll_container"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:orientation="horizontal"            ></LinearLayout>    </HorizontalScrollView>    <View         android:layout_width="match_parent"        android:layout_height="1dp"        android:background="#f00"        />    <android.support.v4.view.ViewPager        android:id="@+id/viewPager"        android:layout_width="match_parent"        android:layout_height="match_parent"        ></android.support.v4.view.ViewPager></LinearLayout>

fragment_layout.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <TextView         android:id="@+id/tv_show"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:textColor="#f00"        android:text="AAA"        />    <ListView        android:id="@android:id/list"         android:layout_width="match_parent"        android:layout_height="match_parent"        ></ListView></LinearLayout>

item.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"     >    <ImageView         android:id="@+id/iv_item"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/ic_launcher"        />    <TextView         android:id="@+id/title_item"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_toRightOf="@id/iv_item"        android:text="name"        />    <TextView         android:id="@+id/content_item"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_toRightOf="@id/iv_item"        android:text="aaa"        android:layout_alignBottom="@id/iv_item"        /></RelativeLayout>

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