下面我们来学习下原型模式
原型模式:用原型实例制定创建对象的种类，并且通过拷贝这些原型创建新的对象。
新建赛车的接口：
[
java]
public
interface car_interface {
public void start();
public void stop();
}
public interface car_interface {
public void start();
public void stop();
}
[
java]
新建宝马汽车的实现类：
新建宝马汽车的实现类：[
java]
<pre class="
java" name="code">package com.jindegege.car;
import com.jindegege.fitting.car_tyre;
import com.jindegege.service.car_interface;
public class bmw_impl implements car_interface, Cloneable {
private car_tyre car_tyre_ref;
private bmw_impl bmw;
public void start() {
}
public void stop() {
}
public car_tyre getCar_tyre_ref() {
return car_tyre_ref;
}
public void setCar_tyre_ref(car_tyre car_tyre_ref) {
this.car_tyre_ref = car_tyre_ref;
}
@Override
public Object clone() throws CloneNotSupportedException {
super.clone();
bmw = new bmw_impl();
bmw.setCar_tyre_ref(new car_tyre());
return bmw;
}
}
<pre class="
java" name="code">package com.jindegege.car;
import com.jindegege.fitting.car_tyre;
import com.jindegege.service.car_interface;
public class bmw_impl implements car_interface, Cloneable {
private car_tyre car_tyre_ref;
private bmw_impl bmw;
public void start() {
}
public void stop() {
}
public car_tyre getCar_tyre_ref() {
return car_tyre_ref;
}
public void setCar_tyre_ref(car_tyre car_tyre_ref) {
this.car_tyre_ref = car_tyre_ref;
}
@Override
public Object clone() throws CloneNotSupportedException {
super.clone();
bmw = new bmw_impl();
bmw.setCar_tyre_ref(new car_tyre());
return bmw;
}
}
新建宝马的配件轮胎类在宝马汽车实现类中需要注意的是将原来protected类型的clone方法要变成public，这样才可以对外公开，可以被调用，将秘密公开化。
[
java]
package com.jindegege.fitting;
public class car_tyre {
private String name = "德国制造原版轮胎";
public String getName() {
return name;
}
}
package com.jindegege.fitting;
public class car_tyre {
private String name = "德国制造原版轮胎";
public String getName() {
return name;
}
}
新建
Android客户端,给出xml以及activity：
[html]
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:
Android="http://schemas.
Android.com/apk/res/
Android"
Android:layout_width="fill_parent"
Android:layout_height="fill_parent"
Android:orientation="vertical" >
<TextView
Android:id="@+id/textview01"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
/>
<TextView
Android:id="@+id/textview02"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
/>
<TextView
Android:id="@+id/textview03"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
/>
<TextView
Android:id="@+id/textview04"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:
Android="http://schemas.
Android.com/apk/res/
Android"
Android:layout_width="fill_parent"
Android:layout_height="fill_parent"
Android:orientation="vertical" >
<TextView
Android:id="@+id/textview01"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
/>
<TextView
Android:id="@+id/textview02"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
/>
<TextView
Android:id="@+id/textview03"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
/>
<TextView
Android:id="@+id/textview04"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
/>
</LinearLayout>[html]
下面是activity
下面是activity
[
java]
package com.jindegege.activity;
import com.jindegege.car.bmw_impl;
import com.jindegege.fitting.car_tyre;
import
Android.app.Activity;
import
Android.os.Bundle;
import
Android.widget.TextView;
import
Android.widget.Toast;
public class PrototypeActivity extends Activity {
private bmw_impl bmw1;
private bmw_impl bmw2;
private TextView textview01;
private TextView textview02;
private TextView textview03;
private TextView textview04;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
textview01= (TextView)findViewById(R.id.textview01);
textview02=(TextView)findViewById(R.id.textview02);
textview03= (TextView)findViewById(R.id.textview03);
textview04=(TextView)findViewById(R.id.textview04);
bmw1 = new bmw_impl();
bmw1.setCar_tyre_ref(new car_tyre());
textview01.setText("我的宝马参数是：" + bmw1);
textview02.setText("我的宝马的轮胎参数是：" + bmw1.getCar_tyre_ref());
bmw2 = (bmw_impl) bmw1.clone();
textview03.setText("他人的宝马的参数是：" + bmw2);
textview04.setText("他人的宝马的参数是：" + bmw2);
} catch (CloneNotSupportedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
package com.jindegege.activity;
import com.jindegege.car.bmw_impl;
import com.jindegege.fitting.car_tyre;
import
Android.app.Activity;
import
Android.os.Bundle;
import
Android.widget.TextView;
import
Android.widget.Toast;
public class PrototypeActivity extends Activity {
private bmw_impl bmw1;
private bmw_impl bmw2;
private TextView textview01;
private TextView textview02;
private TextView textview03;
private TextView textview04;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
textview01= (TextView)findViewById(R.id.textview01);
textview02=(TextView)findViewById(R.id.textview02);
textview03= (TextView)findViewById(R.id.textview03);
textview04=(TextView)findViewById(R.id.textview04);
bmw1 = new bmw_impl();
bmw1.setCar_tyre_ref(new car_tyre());
textview01.setText("我的宝马参数是：" + bmw1);
textview02.setText("我的宝马的轮胎参数是：" + bmw1.getCar_tyre_ref());
bmw2 = (bmw_impl) bmw1.clone();
textview03.setText("他人的宝马的参数是：" + bmw2);
textview04.setText("他人的宝马的参数是：" + bmw2);
} catch (CloneNotSupportedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
下面是效果图：
