札记——设计模式之普通工厂模式

public interface Sender {

public void Send(); //定义一个实现方法
}

public class MailSender implements  Sender{

//实现接口 重写方法
@Override
public void Send() {

Log.e("===","this is mailsender!");
}
}

public class SmsSender  implements  Sender{
@Override
public void Send() {

Log.e("===","this is sms sender!");
}
}

public class SendFactory {
//类似提供一个方法生产， 字符串传错的话，则生产失败
public Sender produce(String type){

if ("mail".equals(type)) {

return new MailSender();
} else if ("sms".equals(type)) {

return new SmsSender();
} else {

Log.e("===","请输入正确的类型!");
return null;
}
}
}

/**
* Created by zhoushaosen on 16/3/16.
*/
public class FactoryTestActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*
*   实例化对象
*   类对象调用方法
* */
SendFactory factory = new SendFactory();
Sender sender = factory.produce("sms");
sender.Send();

}
}