public Room getRoom();
}
- ConcreteBuilder：实现Builder接口，针对不同的商业逻辑，具体化复杂对象的各部分的创建。 在建造过程完成后，提供产品的实例。
public class ConcreteBuilder implements Build{
private Product room=new Product();
@Override
public void makeWindow() {
room.setFloor("地板 ");
}
@Override
public void makeFloor() {
room.setWindow(“窗户”);
}
@Override
public Product getRoom() {
return room;
}
}
- Director：调用具体建造者来创建复杂对象的各个部分，在指导者中不涉及具体产品的信息，只负责保证对象各部分完整创建或按某种顺序创建。
public class Director {
public void order(Build build)
{
build.makeFloor();
build.makeWindow();
}
}
- Product：要创建的复杂对象。
public class Product {
private String window;
private String floor;
public String getWindow() {
return window;
}
public void setWindow(String window) {
this.window = window;
}
public String getFloor() {
return floor;
}
public void setFloor(String floor) {
this.floor = floor;
}
@Override
public String toString() {
return "---->floor " + floor + " window " + window;
}
}
- 执行：
Build worker = new ConcreteBuilder();
Director director = new Director();
director.order(worker);
Log.d(“huangxiaoguo”,worker.getRoom().toString());
- 角色案例：
android中的builder设计模式
- 产品
public class House {
private final HouseController malert;
public House(Context context) {
//固定两百万
malert = new HouseController(this,200);
}
public static class Builder {
private final HouseController.alertParams P;
public Builder(Context context) {
P = new HouseController.alertParams(context);
}
public Builder setWindow(String window) {
P.window = window;
return this;
}
public Builder setFloor(String floor) {
P.floor = floor;
return this;
}
public Builder setDoorl(String doorl) {
P.doorl = doorl;
return this;
}
private House create() {
final House house = new House(P.mContext);
P.apply(house.malert);
//----------------------------------------------------
//处理 House的其他方法和逻辑
//----------------------------------------------------
return house;
}
public House show() {
final House house = create();
return house;
}
}
}
