问题描述
我有一个关于保存自定义对象的ArrayList的问题。我有一类称为notitie:
I have a question about saving an arraylist of custom objects. I have a class called notitie:
public class Notitie implements Serializable{
private String titel = "";
private String type = "";
private String datum = "";
public void setTitel (String titel){
this.titel = titel;
}
public String getTitel(){
return titel;
}
public void setType (String type){
this.type = type;
}
public String getType(){
return type;
}
public void setDatum (String datum){
this.datum = datum;
}
public String getDatum(){
return datum;
}
}
创建Notitie的一些对象,并把它们添加到我的ArrayList称为notities
I create some objects of Notitie and add them to my arraylist called notities
ArrayList<Notitie> notities = new ArrayList<Notitie>();
Notitie notitie1 = new Notitie();
notitie1.setTitel("Meting");
notitie1.setType("Watermeting");
notitie1.setDatum("22-09-12");
notities.add(notitie1);
Notitie notitie2 = new Notitie();
notitie1.setTitel("Meting2");
notitie1.setType("Watermeting2");
notitie1.setDatum("23-09-12");
notities.add(notitie2);
Notitie notitie3 = new Notitie();
notitie1.setTitel("Meting3");
notitie1.setType("Watermeting3");
notitie1.setDatum("24-09-12");
notities.add(notitie3);
现在我要保存填充的ArrayList在设备的存储中,这样就可以随时访问。我用来保存数据作为一个字符串或某些整数与共享preferences,但我无法保存此ArrayList这一点。是否有人有办法解决吗?
Now I want to save the filled Arraylist on the device's storage so it can be accessed anytime. I used to save data as a String or some Integers with sharedpreferences but I can't save this Arraylist with that.Does anybody have a solution?
在此先感谢!
推荐答案
您做有几个选项:
-
使用序列化,XML或JSON和存储数据的文件。请参照this如果你想实现序列化的解决方案的。
存储你的数据使用SQLite。看一看本教程得到启动。
Store you data using SQLite. Have a look at this tutorial to get started.
编辑::您可能需要阅读this还有!
EDIT : You might want to read this as well!
这篇关于Android的保存自定义对象的数组的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!