Android常用设计模式——原型模式

来源：互联网发布：快乐8软件下载编辑：程序博客网时间：2024/05/17 08:23

这篇文章来看看原型模式！！

概念：用原型实例指定创建对象的种类，并通过拷贝这些原型创建新的对象。

创建对象，拷贝对象。。。。晦涩难懂，直接上栗子！！！！

创建一个Student类，各种set,get方法，最关键的是CLone方法，也就是拷贝Student类创建一个新对象student1

package com.example.mytry;/** * 原型模式Student类 */public class Student implements Cloneable {    private String name;    private int age;    private int count;    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public void setName(String name) {        this.name = name;    }    public String getName() {        return name;    }    public int getCount() {        return count;    }    public void setCount(int count) {        this.count = count;    }    @Override    protected Object clone() throws CloneNotSupportedException {        Student student = null;        try {            student = (Student) super.clone();            student.name = this.name;            student.age = this.age;            student.count = this.count;        } catch (Exception e) {            e.printStackTrace();        }        return student;    }}

package com.example.mytry;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.widget.Toast;/** * 原型模式案例 */public class MainActivity extends AppCompatActivity {    private Student student1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Student student = new Student();        student.setName("张三");        student.setAge(90);        student.setCount(100);        try {            student1 = (Student) student.clone();            student1.setName("历史");        } catch (CloneNotSupportedException e) {            e.printStackTrace();        }        Toast.makeText(this, student1.toString(), Toast.LENGTH_SHORT).show();    }    @Override    public String toString() {        return "姓名：" + student1.getName() + "年龄：" + student1.getAge() + "分数" + student1.getCount();    }}

阅读全文

0 0