Android 复杂的手势处理利用GestureOverView

代码示例：

MainActivity代码：：

package com.example.gestureoverlayview;

import android.gesture.Gesture;
import android.gesture.GestureLibraries;
import android.gesture.GestureLibrary;
import android.gesture.GestureOverlayView;
import android.gesture.Prediction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {
    GestureOverlayView gestureOverlayView;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gestureOverlayView = (GestureOverlayView) findViewById(R.id.gestureOverlayView);
        //1\找到刚才与设定的收拾文件
        //加载收拾文件中的手势
        //匹配
        final GestureLibrary library=GestureLibraries.fromRawResource(MainActivity.this,R.r..(提前定义好的手势文件));
        library.load();

        gestureOverlayView.addOnGesturePerformedListener(new GestureOverlayView.OnGesturePerformedListener() {
            @Override
            public void onGesturePerformed(GestureOverlayView gestureOverlayView, Gesture gesture) {
                //读出手势，识别手势
                ArrayListmygesture = library.recognize(gesture);
                Prediction prediction = mygesture.get(0);//每次都从开始判断手势
                if (prediction.score>=5.0){   //判断相似度
                     if (prediction.name.equals("exit"))
                     {
                         finish();
                     }if (prediction.name.equals("next"))
                    {
                        Toast.makeText(MainActivity.this,"播放下一首歌",Toast.LENGTH_LONG).show();

                    }if (prediction.name.equals("pervious")){

                    }
                }else {
                    Toast.makeText(MainActivity.this,"播放上一首歌",Toast.LENGTH_LONG).show();
                }
                //
            }
        });
    }
}

activity_main代码示例：：

xml version="1.0" encoding="utf-8"?>
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.gestureoverlayview.MainActivity">

            android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!" />

            android:layout_width="300px"
        android:layout_height="300px"
        android:id="@+id/gestureOverlayView"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true">

                    android:src="@mipmap/ic_launcher"
            android:layout_width="300px"
            android:layout_height="200px"
            android:id="@+id/qq"/>