<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.android_gestureoverlayview.MainActivity" >

    <android.gesture.GestureOverlayView

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:id="@+id/gestureOverlayView"

        >

    <ImageView

        android:id="@+id/image"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

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

    </android.gesture.GestureOverlayView>

</RelativeLayout>

package com.example.android_gestureoverlayview;

import java.util.ArrayList;

import android.app.Activity;

import android.gesture.Gesture;

import android.gesture.GestureLibraries;

import android.gesture.GestureLibrary;

import android.gesture.GestureOverlayView;

import android.gesture.GestureOverlayView.OnGesturePerformedListener;

import android.gesture.Prediction;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.Toast;

/**

 * GestureOverlayView:

 * 1.使用安卓自带的文件Gestures Builder生成手势文件(D:\JDK\Android SDK\samples\android-15\GestureBuilder)

 *         Gestures Builder一般在sdk中（生成手势文件）

 *     1.1.导入：File-New-Android-Android Sample project

 *     1.2.安装：将该项目安装到模拟器中，进行手势的自定义添加

 *     1.3.在虚拟机的mnt/sdcard--(shell/emulated/0)中找到gestures文件，该文件包含自定义手势，将文件导出

 * 2.加入项目

 *     2.1新建一个文件夹res//raw，将gestures文件加入

 * 3.GestureOverlayView

 *     3.1一种手势输入的透明覆盖层，可覆盖在其他控件的上方，也可包含其他控件，存在3个监听器接口

 *         GestureOverlayView.OnGestureListener    手势监听器

 *         GestureOverlayView.OnGesturePerformedListener    手势执行监听器

 *         GestureOverlayView.OnGesturingListener    手势执行中监听器

 *

 *

 */

public class MainActivity extends Activity {

    private GestureOverlayView gestureOverlayView;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        gestureOverlayView = (GestureOverlayView) findViewById(R.id.gestureOverlayView);

        /**

         * 执行以下步骤：

         * 1.找到刚才的预设定的手势文件

         * 2.加载那个手势文件中的所有手势

         * 3.匹配 识别

         */

        //从资源中将手势库文件加载进来

        final GestureLibrary library = GestureLibraries.fromRawResource(MainActivity.this, R.raw.gestures);

        library.load();

        //GestureOverlayView.OnGesturePerformedListene 手势执行监听器

        gestureOverlayView.addOnGesturePerformedListener(new OnGesturePerformedListener() {

            @Override

            public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) {

                // TODO Auto-generated method stub

                //读出手势库内容 识别手势    Prediction 预测

                ArrayList<Prediction> mygesture = library.recognize(gesture);

                Prediction prediction = mygesture.get(0);

                //prediction 里面有两个参数 name,score(0.0-10)(相似度)值越大，要求越严格

                if(prediction.score >= 5.0){

                    if(prediction.name.equals("exit")){

                        System.exit(0);

                    }else if(prediction.name.equals("privious")){

                        Toast.makeText(MainActivity.this, "播放上一首", Toast.LENGTH_SHORT).show();

                    }else if(prediction.name.equals("next")){

                        Toast.makeText(MainActivity.this, "播放下一首", Toast.LENGTH_SHORT).show();

                    }

                }else{

                    Toast.makeText(MainActivity.this, "没有该手势", 1).show();

                }

            }

        });

    }

}