[Android]_ch5.10_手勢資料庫

[Android]_ch5.10_手勢資料庫

package com.example.ch5_gesture;



import java.util.ArrayList;



import android.R.integer;

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.TextView;

import android.widget.Toast;





public class MainActivity extends Activity {

TextView tv1;

GestureOverlayView gv;

GestureLibrary gestureLibrary;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        tv1=(TextView)findViewById(R.id.textView1);

        gv=(GestureOverlayView)findViewById(R.id.gestureOverlayView1);

        gestureLibrary=GestureLibraries.fromRawResource(MainActivity.this, R.raw.gestures);

        if(!gestureLibrary.load())

        finish();

        gv.addOnGesturePerformedListener(new OnGesturePerformedListener() {

@Override

public void onGesturePerformed(GestureOverlayView overlay, Gesture usr) {

ArrayList<Prediction> list=gestureLibrary.recognize(usr);

if(list.size()>0){

StringBuilder sb=new StringBuilder("手勢資料庫比對結果如下:\n");

for(int i=0;i<list.size();i++){

String name=list.get(i).name;

double score=list.get(i).score;

sb.append("第"+(i+1)+"個手勢:"+name+" 分數:"+score+"\n");

}

if(list.get(0).score>2.0){

sb.append("電腦判斷手勢符號為:\n");

sb.append("手勢:"+list.get(0).name+" 分數:"+list.get(0).score+"\n");

}else{

sb.append("電腦無法判斷此手勢符號...");

}

tv1.setText(sb);

}else{

Toast.makeText(MainActivity.this, "找不到資料", Toast.LENGTH_SHORT).show();

}

}

});

    }



}