ViewPager组件的使用

自己测试的，留着以后参考！

布局如下：

<?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">    <android.support.v4.view.ViewPager        android:id="@+id/viewpager"        android:layout_width="match_parent"        android:layout_height="0dp"        android:layout_weight="1"/>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_marginTop="6dp"        android:baselineAligned="true"        android:orientation="horizontal">        <LinearLayout            android:id="@+id/ll1"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_weight="1"            android:orientation="vertical">            <ImageView                android:id="@+id/home_n"                android:layout_width="25dp"                android:layout_height="25dp"                android:layout_gravity="center"                android:scaleType="centerInside"                android:src="@drawable/ic_tab_home_p" />            <TextView                android:id="@+id/text_home"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center"                android:padding="4dp"                android:text="@string/home"                android:textColor="@android:color/holo_red_light"                android:textSize="12sp" />        </LinearLayout>        <LinearLayout            android:id="@+id/ll2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_weight="1"            android:orientation="vertical">            <ImageView                android:id="@+id/order_n"                android:layout_width="25dp"                android:layout_height="25dp"                android:layout_gravity="center"                android:scaleType="centerInside"                android:src="@drawable/ic_tab_order_n" />            <TextView                android:id="@+id/text_order"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center"                android:padding="4dp"                android:text="@string/order"                android:textSize="12sp" />        </LinearLayout>        <LinearLayout            android:id="@+id/ll3"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_weight="1"            android:baselineAligned="false"            android:orientation="vertical">            <ImageView                android:id="@+id/mine_n"                android:layout_width="25dp"                android:layout_height="25dp"                android:layout_gravity="center"                android:scaleType="centerInside"                android:src="@drawable/ic_tab_mine_n" />            <TextView                android:id="@+id/text_mine"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center"                android:padding="4dp"                android:text="@string/mine"                android:textSize="12sp" />        </LinearLayout>    </LinearLayout></LinearLayout>

主界面如下：

package com.jackiee.waimai.activity;import android.app.Activity;import android.content.Intent;import android.graphics.Color;import android.os.Bundle;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;import android.widget.Toast;import com.jackiee.waimai.R;import java.util.ArrayList;import java.util.List;import java.util.Timer;import java.util.TimerTask;/** * Created by baigu on 2016/4/15. */public class MainActivity extends Activity {    private ViewPager viewPager;    private ImageView imageView_home;    private ImageView imageView_order;    private ImageView imageView_mine;    private TextView textView_home;    private TextView textView_order;    private TextView textView_mine;    private LayoutInflater layoutInflater;    private List<View> views = new ArrayList<>();    private PagerAdapter pagerAdapter;    private LinearLayout ll1;    private LinearLayout ll2;    private LinearLayout ll3;    private SwipeRefreshLayout refreshLayout;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_main);        viewPager = (ViewPager) findViewById(R.id.viewpager);        imageView_home = (ImageView) findViewById(R.id.home_n);        imageView_order = (ImageView) findViewById(R.id.order_n);        imageView_mine = (ImageView) findViewById(R.id.mine_n);        textView_home = (TextView) findViewById(R.id.text_home);        textView_order = (TextView) findViewById(R.id.text_order);        textView_mine = (TextView) findViewById(R.id.text_mine);    //重要点之一。给viewPager注册事件监听。        viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {            @Override            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {            }            @Override            public void onPageSelected(int position) {                switch (position) {                    case 0:                        imageView_home.setImageResource(R.drawable.ic_tab_home_p);                        imageView_order.setImageResource(R.drawable.ic_tab_order_n);                        textView_home.setTextColor(Color.RED);                        textView_order.setTextColor(Color.BLACK);                        break;                    case 1:                        imageView_order.setImageResource(R.drawable.ic_tab_order_p);                        imageView_home.setImageResource(R.drawable.ic_tab_home_n);                        imageView_mine.setImageResource(R.drawable.ic_tab_mine_n);                        textView_order.setTextColor(Color.RED);                        textView_home.setTextColor(Color.BLACK);                        textView_mine.setTextColor(Color.BLACK);                        break;                    case 2:                        imageView_mine.setImageResource(R.drawable.ic_tab_mine_p);                        imageView_home.setImageResource(R.drawable.ic_tab_home_n);                        imageView_order.setImageResource(R.drawable.ic_tab_order_n);                        textView_home.setTextColor(Color.BLACK);                        textView_mine.setTextColor(Color.RED);                        textView_order.setTextColor(Color.BLACK);                        break;                    default:                        break;                }            }            @Override            public void onPageScrollStateChanged(int state) {            }        });        layoutInflater = LayoutInflater.from(this);        View view1 = layoutInflater.inflate(R.layout.activity_home, null);        View view2 = layoutInflater.inflate(R.layout.activity_order, null);        View view3 = layoutInflater.inflate(R.layout.activity_mine, null);        views.add(view1);        views.add(view2);        views.add(view3);    //重要点之一        pagerAdapter = new PagerAdapter() {            @Override            public int getCount() {                return views == null ? 0 : views.size();            }            @Override            public boolean isViewFromObject(View view, Object object) {                return view == object;            }            @Override            public void destroyItem(ViewGroup container, int position, Object object) {                container.removeView(views.get(position));            }            @Override            public Object instantiateItem(ViewGroup container, int position) {                container.addView(views.get(position));                return views.get(position);            }        };        viewPager.setAdapter(pagerAdapter);        ll1 = (LinearLayout) findViewById(R.id.ll1);        ll2 = (LinearLayout) findViewById(R.id.ll2);        ll3 = (LinearLayout) findViewById(R.id.ll3);    //重要点之一        ll1.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                viewPager.setCurrentItem(0);//设置页面            }        });        ll2.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                viewPager.setCurrentItem(1);            }        });        ll3.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                viewPager.setCurrentItem(2);            }        });}