本文共 2474 字,大约阅读时间需要 8 分钟。
一内容:设计一个手写字体识别程序。
二实现
①建立一个存放手写字体的数据库
②activity_main.xml<?xml version="1.0" encoding="utf-8"?>
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:orientation="vertical">
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Gesture:"
android:id="@+id/tv"
android:textSize="24dp"/>
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="20dp"
android:text="clear"
android:id="@+id/bt"/>
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gestureStrokeType="multiple"
android:eventsInterceptionEnabled="false"
android:orientation="vertical"
android:id="@+id/gesture">
3.MainActivity.javapackage com.example.myapplication;
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.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity implements GestureOverlayView.OnGesturePerformedListener {
GestureLibrary mLibrary; //定义手势库对象
GestureOverlayView gest; //定义手势视图对象做画板之用
TextView txt;
Button bt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gest = (GestureOverlayView)findViewById(R.id.gesture);
gest.addOnGesturePerformedListener(this); // 注册手势识别的监听器
txt = (TextView)findViewById(R.id.tv);
mLibrary = GestureLibraries.fromRawResource(this,R.raw.gestures); //加载手势库
bt = (Button)findViewById(R.id.bt);
bt.setOnClickListener(new Click());
if (!mLibrary.load()) {
finish();
}
}
/*根据画的手势识别是否匹配手势库里的手势*/
@Override
public void onGesturePerformed(GestureOverlayView gest, Gesture gesture) {
ArrayList gestList = mLibrary.recognize(gesture); // 从手势库获取手势数据
if (gestList.size() > 0) {
Prediction pred = (Prediction)gestList.get(0);
if (pred.score > 1.0) { // 检索到匹配的手势
Toast.makeText(this,pred.name,Toast.LENGTH_SHORT).show();
txt.append(pred.name);
}
}
}
private class Click implements View.OnClickListener {
@Override
public void onClick(View view) {
txt.setText("Gesture:");
}
}
}
三效果
转载地址:http://oejdv.baihongyu.com/