AndroidStudio：手势识别_Android

AndroidStudio：手势识别

2022-10-13 14:55Allison李沛 Android

这篇文章主要介绍了AndroidStudio手势识别，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧

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

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									<?xml version="1.0" encoding="utf-8"?>

									<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

									  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">

									  <TextView

									    android:layout_width="wrap_content"

									    android:layout_height="wrap_content"

									    android:text="Gesture:"

									    android:id="@+id/tv"

									    android:textSize="24dp"/>

									  <Button

									    android:layout_width="match_parent"

									    android:layout_height="wrap_content"

									    android:textSize="20dp"

									    android:text="clear"

									    android:id="@+id/bt"/>

									  <android.gesture.GestureOverlayView

									    android:layout_width="match_parent"

									    android:layout_height="match_parent"

									    android:gestureStrokeType="multiple"

									    android:eventsInterceptionEnabled="false"

									    android:orientation="vertical"

									    android:id="@+id/gesture"></android.gesture.GestureOverlayView>

									</LinearLayout

3.MainActivity.java

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									package 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:");

									    }

									  }

									}