<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="horizontal" >

    <!-- 定义ImageView控件 -->

    <ImageView

        android:id="@+id/Iv"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:src="@drawable/k1" />

</RelativeLayout>

package com.example.yanlei.yl;

import android.graphics.Color;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.TextView;

import android.text.Html;

import android.text.Html.ImageGetter;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import android.text.Editable;

import android.text.TextWatcher;

import android.widget.EditText;

import android.widget.Button;

import android.app.Activity;

import android.content.Intent;

import android.view.GestureDetector;

import android.view.MotionEvent;

import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {

    // 定义保存ImageView的对象

    private ImageView Iv;

    //定义手势检测器对象

    private GestureDetector gestureDetector;

    //定义图片的资源数组

    private int[] ResId = new int[]{

            R.drawable.k1,

            R.drawable.k2,

            R.drawable.k3

    };

    //定义当前显示的图片的下标

    private int count = 0;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        findView();

        setListener();

    }

    private void setListener() {

        //设置手势监听器的处理效果由onGestureListener来处理

        gestureDetector = new GestureDetector(MainActivity.this,

                onGestureListener);

    }

    @Override

    public boolean onTouchEvent(MotionEvent event) {

        //当前Activity被触摸时回调

        return gestureDetector.onTouchEvent(event);

    }

    private void findView() {

        //得到当前页面的imageview控件

        Iv = (ImageView) findViewById(R.id.Iv);

    }

    //定义了GestureDetector的手势识别监听器

    private GestureDetector.OnGestureListener onGestureListener

            = new GestureDetector.SimpleOnGestureListener() {

        //当识别的收拾是滑动手势时回调onFinger方法

        @Override

        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,

                               float velocityY) {

            //得到滑动手势的其实和结束点的x，y坐标，并进行计算

            float x = e2.getX() - e1.getX();

            float y = e2.getY() - e1.getY();

            //通过计算结果判断用户是向左滑动或者向右滑动

            if (x > 0) {

                count++;

                count %= 3;

            } else if (x < 0) {

                count--;

                count = (count + 3) % 3;

            }

            //切换imageview的图片

            changeImg();

            return true;

        }

    };

    public void changeImg() {

        //设置当前位置的图片资源

        Iv.setImageResource(ResId[count]);

    }

}