Android的Parcelable创建数组 [英] Android Parcelable create array

问题描述

在后台我解析JSON，然后在此背景下我JSON发送到parcelable
而在Parcelable我 writestring 与 JSONObject.optString 我怎么能写的ArrayList <？/ p>

 列表＆LT;行＆GT;结果=新的ArrayList＆LT;行＆GT;（array.length（））;
                的for（int i = 0; I＆LT; array.length（）;我++）{
                    result.add（新行（array.optJSONObject（I）））;
                }
 

Parcelable.java

 公共行（JSONObject的距离）{
        拇指= from.optString（TAG_THUMBNAILS）;
        bigImage = from.optString（TAG_BIG_IMAGE）;
        笔者= from.optString（TAG_AUTHOR）;
        说明= from.optString（TAG_DESCRIPTION）;
        日期= from.optString（TAG_DATE）;
    }    公共行（邮包包裹）{
        拇指= parcel.readString（）;
        bigImage = parcel.readString（）;
        笔者= parcel.readString（）;
        说明= parcel.readString（）;
        日期= parcel.readString（）;
    }    @覆盖
    公众诠释describeContents（）{
        返回0;
    }    @覆盖
    公共无效writeToParcel（包裹包裹，诠释标志）{
        parcel.writeString（大拇指）;
        parcel.writeString（bigImage）;
        parcel.writeString（作者）;
        parcel.writeString（介绍）;
        parcel.writeString（日期）;
    }
 

解决方案

这是不完整的，但我认为你会得到点。会尽力帮助你。

 公共类行实现Parceleable {    私人字符串大拇指;
    私人字符串bigImage;
   私人字符串作者;
    私人字符串描述;
    私人字符串日期;//你的setter和getter方法​​在这里
    公共无效setThumb（字符串拇指）{
        this.thumb =大拇指;
    }
    公共字符串getThumb（）{
        返回大拇指;
    }
// ....    公共行（）{
     }    公共行（邮包包裹）{
        拇指= parcel.readString（）;
        bigImage = parcel.readString（）;
        笔者= parcel.readString（）;
        说明= parcel.readString（）;
        日期= parcel.readString（）;
    }    @覆盖
    公众诠释describeContents（）{
        返回0;
    }    @覆盖
    公共无效writeToParcel（包裹包裹，诠释标志）{
        parcel.writeString（大拇指）;
        parcel.writeString（bigImage）;
        parcel.writeString（作者）;
        parcel.writeString（介绍）;
        parcel.writeString（日期）;
    }     公共静态最终Parcelable.Creator＆LT;行＆GT; CREATOR =新Parcelable.Creator＆LT; MyParcelable＆GT;（）{    @覆盖
    公共行createFromParcel（包裹中）{
        返回新行（）;
    }    @覆盖
    公共行[] newArray（INT大小）{
        返回新行[大小]
    }
  };
}
 

从JSON填充：

 列表＆LT;行＆GT; myRowArray =新的ArrayList＆LT;行取代;行结果;
           的for（int i = 0; I＆LT; array.length（）;我++）{
                结果=新行（）;
                result.setThumb（fromJson）;您从JSON了//设置字符串拇指
                result.setAuthor（fromJson）;您从JSON了//设置字符串作者
                 .....
                 myRowArray.add（结果）;
            }
 

这就是我们如何做it.It是很容易的。在开始的时候是有点混乱，但如果你学会了一点，你会发现它很容易和非常方便的。

In background i parse JSON, and then in this background i send Json to parcelable And in Parcelable i writestring with JSONObject.optString how i can write ArrayList?

List<Row> result = new ArrayList<Row>(array.length());
                for (int i = 0; i < array.length(); i++) {
                    result.add(new Row(array.optJSONObject(i)));
                }

Parcelable.java

public Row(JSONObject from) {
        thumb = from.optString(TAG_THUMBNAILS);
        bigImage = from.optString(TAG_BIG_IMAGE);
        author = from.optString(TAG_AUTHOR);
        description = from.optString(TAG_DESCRIPTION);
        date = from.optString(TAG_DATE);
    }

    public Row(Parcel parcel) {
        thumb = parcel.readString();
        bigImage = parcel.readString();
        author = parcel.readString();
        description = parcel.readString();
        date = parcel.readString();
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel parcel, int flags) {
        parcel.writeString(thumb);
        parcel.writeString(bigImage);
        parcel.writeString(author);
        parcel.writeString(description);
        parcel.writeString(date);
    }

解决方案

It is not complete but I think you will get the point. Will try to assist you.

public class Row implements Parceleable{

    private String thumb;
    private String bigImage;
   private String author;
    private String description;
    private String date;

// your setters and getters here
    public void setThumb(String thumb){
        this.thumb = thumb;
    }
    public String getThumb(){
        return thumb;
    }
// ....

    public Row(){
     } 

    public Row(Parcel parcel) {
        thumb = parcel.readString();
        bigImage = parcel.readString();
        author = parcel.readString();
        description = parcel.readString();
        date = parcel.readString();
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel parcel, int flags) {
        parcel.writeString(thumb);
        parcel.writeString(bigImage);
        parcel.writeString(author);
        parcel.writeString(description);
        parcel.writeString(date);
    }

     public static final Parcelable.Creator<Row> CREATOR = new Parcelable.Creator<MyParcelable>() {

    @Override
    public Row createFromParcel(Parcel in) {
        return new Row(in);
    }

    @Override
    public Row[] newArray(int size) {
        return new Row[size];
    }
  };
}

Populate from your json:

List<Row> myRowArray = new ArrayList<Row>;

Row result;
           for (int i = 0; i < array.length(); i++) {
                result = new Row();
                result.setThumb( fromJson ); //Set thumb string you got from json
                result.setAuthor( fromJson ); //Set Author string you got from json
                 .....
                 myRowArray.add(result);
            }

That's how we do it.It is very easy. At the beginning it is little confusing but if you learn the point you will find out it is easy and very handy.

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