Android常用设计模式——原型模式

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();
}}