使用ViewPager实现主界面的布局

来源：互联网发布：淘宝好吃的泡面排行榜编辑：程序博客网时间：2024/05/22 07:42

先看效果图: 左右拖动可切换Viewpager 点击下方的item也可以进行切换处理

首先建立布局文件，top.xml，bottom.xml，中间是一个Viewpager实现

1: top.xml文件就是一个textview实现的，

2：bottom.xml文件

<?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="50dip"    android:orientation="vertical">    <LinearLayout        android:orientation="horizontal"        android:layout_width="match_parent"        android:layout_height="50dip">        <LinearLayout            android:id="@+id/home_layout_view"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1"            android:orientation="vertical"            android:gravity="center">            <ImageView                android:id="@+id/home_image_view"                android:layout_width="20dip"                android:layout_height="20dip"                android:src="@drawable/comui_tab_home_selected"                android:background="#00000000"                android:layout_gravity="center"/>            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="首页"                android:layout_gravity="center"                android:layout_marginTop="5dip"/>        </LinearLayout>        <LinearLayout            android:id="@+id/message_layout_view"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1"            android:orientation="vertical"            android:gravity="center">            <ImageView                android:id="@+id/message_image_view"                android:layout_width="20dip"                android:layout_height="20dip"                android:src="@drawable/comui_tab_message"                android:background="#00000000"                android:layout_gravity="center"/>            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="消息"                android:layout_gravity="center"                android:layout_marginTop="5dip"/>        </LinearLayout>        <LinearLayout            android:id="@+id/person_layout_view"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1"            android:orientation="vertical"            android:gravity="center">            <ImageView                android:id="@+id/person_image_view"                android:layout_width="20dip"                android:layout_height="20dip"                android:src="@drawable/comui_tab_person"                android:background="#00000000"                android:layout_gravity="center"/>            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="我的"                android:layout_gravity="center"                android:layout_marginTop="5dip"/>        </LinearLayout>        <LinearLayout            android:id="@+id/pond_layout_view"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1"            android:orientation="vertical"            android:gravity="center">            <ImageView                android:id="@+id/pond_image_view"                android:layout_width="20dip"                android:layout_height="20dip"                android:src="@drawable/comui_tab_pond"                android:background="#00000000"                android:layout_gravity="center"/>            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="博客"                android:layout_gravity="center"                android:layout_marginTop="5dip"/>        </LinearLayout>    </LinearLayout></LinearLayout>

最后将这里个文件include进 activity_main中

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.yongninggo.application.MainActivity"    android:orientation="vertical">    <include layout="@layout/top" />    <android.support.v4.view.ViewPager        android:id="@+id/viewpager"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_weight="1">    </android.support.v4.view.ViewPager>    <include layout="@layout/bottom" /></LinearLayout>

接下来就是mainactivity文件了，先定义xml文件中所有的控件，并获取ID，初始化4个布局，并写入给4个image点击事件进行跳转，实现viewpager左右滑动的监听

代码中有注释，我就不一一解释了哈

package com.yongninggo.application;import android.os.Bundle;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.LinearLayout;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity implements View.OnClickListener {    private ViewPager viewPager;    private PagerAdapter adapter;    private List<View> views = new ArrayList<View>();    private LinearLayout home_layout_view;    private LinearLayout message_layout_view;    private LinearLayout pond_layout_view;    private LinearLayout person_layout_view;    private ImageView home_image_view;    private ImageView message_image_view;    private ImageView pond_image_view;    private ImageView person_image_view;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        inisview();        initEvents();    }    private void inisview() {        viewPager = (ViewPager) findViewById(R.id.viewpager);        home_layout_view = (LinearLayout) findViewById(R.id.home_layout_view);        message_layout_view = (LinearLayout) findViewById(R.id.message_layout_view);        pond_layout_view = (LinearLayout) findViewById(R.id.pond_layout_view);        person_layout_view = (LinearLayout) findViewById(R.id.person_layout_view);        home_image_view = (ImageView) findViewById(R.id.home_image_view);        message_image_view = (ImageView) findViewById(R.id.message_image_view);        pond_image_view = (ImageView) findViewById(R.id.pond_image_view);        person_image_view = (ImageView) findViewById(R.id.person_image_view);        //初始化ViewPager的四个布局        LayoutInflater inflater = LayoutInflater.from(this);        View home = inflater.inflate(R.layout.home,null);        View message = inflater.inflate(R.layout.message,null);        View pond = inflater.inflate(R.layout.pond,null);        View person = inflater.inflate(R.layout.person,null);        views.add(home);        views.add(message);        views.add(pond);        views.add(person);        adapter = new PagerAdapter() {            @Override     //初始化item            public Object instantiateItem(ViewGroup container, int position) {               View view = views.get(position);               container.addView(view);                return view;            }            @Override     //摧毁View            public void destroyItem(ViewGroup container, int position, Object object) {                container.removeView(views.get(position));            }            @Override     //包含View的个数(4个)            public int getCount() {                return views.size();            }            @Override            public boolean isViewFromObject(View view, Object object) {                return view ==object ;            }        };        viewPager.setAdapter(adapter);    }    private void initEvents() {        home_layout_view.setOnClickListener(this);        message_layout_view.setOnClickListener(this);        pond_layout_view.setOnClickListener(this);        person_layout_view.setOnClickListener(this);        //监听Page变化的匿名类        viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {            @Override            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {            }            @Override            public void onPageSelected(int position) {                int Currentitem = viewPager.getCurrentItem();                Resetimg();                switch (Currentitem){                    case 0 :                        home_image_view.setImageResource(R.drawable.comui_tab_home_selected);                        break;                    case 1 :                        message_image_view.setImageResource(R.drawable.comui_tab_message_selected);                        break;                    case 2 :                        person_image_view.setImageResource(R.drawable.comui_tab_person_selected);                        break;                    case 3 :                        pond_image_view.setImageResource(R.drawable.comui_tab_pond_selected);                        break;                    default:                        break;                }            }            @Override            public void onPageScrollStateChanged(int state) {            }        });    }    @Override    public void onClick(View v) {        Resetimg();        switch (v.getId()){            case R.id.home_layout_view :                viewPager.setCurrentItem(0); // 表示点击这个layout切换到第一个界面上                home_image_view.setImageResource(R.drawable.comui_tab_home_selected);                break;            case R.id.message_layout_view :                viewPager.setCurrentItem(1);                message_image_view.setImageResource(R.drawable.comui_tab_message_selected);                break;            case R.id.person_layout_view :                viewPager.setCurrentItem(2);                person_image_view.setImageResource(R.drawable.comui_tab_person_selected);                break;            case R.id.pond_layout_view :                viewPager.setCurrentItem(3);                pond_image_view.setImageResource(R.drawable.comui_tab_pond_selected);                break;            default:                break;        }    }    //将所有的图片切换为暗色的    private void Resetimg() {        home_image_view.setImageResource(R.drawable.comui_tab_home);        message_image_view.setImageResource(R.drawable.comui_tab_message);        pond_image_view.setImageResource(R.drawable.comui_tab_pond);        person_image_view.setImageResource(R.drawable.comui_tab_person);    }}

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