Android——手写字体识别程序

    
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package com.example.ex4_6_1;
 
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.Prediction;
import android.gesture.GestureOverlayView.OnGesturePerformedListener;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity
        implements OnGesturePerformedListener
{
    GestureLibrary mLibrary;
    GestureOverlayView gesturesView;
    TextView txt;
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gesturesView=(GestureOverlayView)findViewById(R.id.gestures);
        gesturesView.addOnGesturePerformedListener(this);
        txt = (TextView)findViewById(R.id.textView1);
        mLibrary = GestureLibraries.fromRawResource(this,
                R.raw.gestures);
        if(!mLibrary.load())
        {
            finish();
        }
    }
    /*根据在GestureOverlayView上画的手势来识别是否匹配手势库里的手势 */
    @Override
    public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture)
    {
        ArrayList predictions=mLibrary.recognize(gesture);
        if(predictions.size()>0)
        {
            Prediction prediction = (Prediction)predictions.get(0);
            if(prediction.score > 1.0)
            {
                Toast.makeText(this,prediction.name,Toast.LENGTH_SHORT).show();
                txt.append(prediction.name);
            }
        }
    }
}