Android：UI控件GestureOverlayView、gesture、手势

XML代码：

<android.gesture.GestureOverlayView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/gestureOverlayView1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true" >
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".MainActivity" >
        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="30dp"
            android:text="Large Text"
            android:textAppearance="?android:attr/textAppearanceLarge" />
        <CheckBox
            android:id="@+id/checkBox1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/textView1"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="24dp"
            android:text="CheckBox" />
    </RelativeLayout>
</android.gesture.GestureOverlayView>

JAVA代码：

import java.util.ArrayList;
import android.os.Bundle;
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.view.Menu;
import android.widget.CheckBox;
public class MainActivity extends Activity
{
    /**
     1) 定义手势
                       导入并运行GestureBuilder
                       导出mnt/sdcard/gestures
     2) 识别手势
        a) gestures文件拷贝到res\raw\ 
        b) layout  新增GestureOverlayView，用来做布局
            
        c) 加载手势库
          final GestureLibrary library = GestureLibraries.fromRawResource(this, R.raw.gestures);
          library.load();
            
        d) 识别手势
        GestureOverlayView OverlayView = (GestureOverlayView) findViewById(R.id.gestureOverlayView1);
        OnGesturePerformedListener listener = new OnGesturePerformedListener()
        {
            @Override
            public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture)
            {
                ArrayList<Prediction> recognizeList = library.recognize(gesture);
                Prediction prediction = recognizeList.get(0);
                if(prediction.score >= 5)//相似度score取值范围0-10
                {
                    if(prediction.equals("check"))
                    {
                        checkBox.setChecked(true);
                    }
                }
            }
        };
        OverlayView.addOnGesturePerformedListener(listener);
     */
        
        
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
            
        final CheckBox checkBox = (CheckBox) findViewById(R.id.checkBox1);
            
        //获得手势库
        final GestureLibrary library = GestureLibraries.fromRawResource(this, R.raw.gestures);
        library.load();//导入库
            
        //找到和监听手写view
        GestureOverlayView OverlayView = (GestureOverlayView) findViewById(R.id.gestureOverlayView1);
        OnGesturePerformedListener listener = new OnGesturePerformedListener()
        {
            @Override
            public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture)
            {
                ArrayList<Prediction> recognizeList = library.recognize(gesture);
                Prediction prediction = recognizeList.get(0);
                if(prediction.score >= 5)//相似度score取值范围0-10
                {
                    if(prediction.name.equals("check"))//判断name是否相同
                    {
                        checkBox.setChecked(true);
                    }
                }
            }
        };
        OverlayView.addOnGesturePerformedListener(listener);
    }
        
    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
        
}