如何在 android 中将 jsonObject 设置为改装 DataModel

Question

我想将 JsonObject 项保存到改造 DataModel 中，但是当运行应用程序在 LogCat
中显示错误时我的数据模型：

public class R_CatModel {

    @SerializedName("id")
    public Integer id;
    @SerializedName("type")
    public String type;
    @SerializedName("slug")
    public String slug;
    @SerializedName("url")
    public String url;
    @SerializedName("status")
    public String status;
    @SerializedName("title")
    public String title;
    @SerializedName("title_plain")
    public String title_plain;
    @SerializedName("content")
    public String content;
    @SerializedName("excerpt")
    public String excerpt;
    @SerializedName("date")
    public String date;
    @SerializedName("modified")
    public String modified;
    @SerializedName("comment_count")
    public int comment_count;
    @SerializedName("comment_status")
    public String comment_status;
    @SerializedName("thumbnail")
    public String thumbnail;
    @SerializedName("thumbnail_images")
    public R_CatThumbnailImages thumbnail_images;
    @SerializedName("categories")
    public R_CatCategory categories;

    public R_CatModel(Integer id, String type, String slug, String url, String status, String title,
                      String title_plain, String content, String excerpt, String date, String modified,
                      int comment_count, String comment_status, String thumbnail,
                      R_CatThumbnailImages thumbnail_images, R_CatCategory categories) {
        this.id = id;
        this.type = type;
        this.slug = slug;
        this.url = url;
        this.status = status;
        this.title = title;
        this.title_plain = title_plain;
        this.content = content;
        this.excerpt = excerpt;
        this.date = date;
        this.modified = modified;
        this.comment_count = comment_count;
        this.comment_status = comment_status;
        this.thumbnail = thumbnail;
        this.thumbnail_images = thumbnail_images;
        this.categories = categories;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getSlug() {
        return slug;
    }

    public void setSlug(String slug) {
        this.slug = slug;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getTitle_plain() {
        return title_plain;
    }

    public void setTitle_plain(String title_plain) {
        this.title_plain = title_plain;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public String getExcerpt() {
        return excerpt;
    }

    public void setExcerpt(String excerpt) {
        this.excerpt = excerpt;
    }

    public String getDate() {
        return date;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public String getModified() {
        return modified;
    }

    public void setModified(String modified) {
        this.modified = modified;
    }

    public int getComment_count() {
        return comment_count;
    }

    public void setComment_count(int comment_count) {
        this.comment_count = comment_count;
    }

    public String getComment_status() {
        return comment_status;
    }

    public void setComment_status(String comment_status) {
        this.comment_status = comment_status;
    }

    public String getThumbnail() {
        return thumbnail;
    }

    public void setThumbnail(String thumbnail) {
        this.thumbnail = thumbnail;
    }

    public R_CatThumbnailImages getThumbnail_images() {
        return thumbnail_images;
    }

    public void setThumbnail_images(R_CatThumbnailImages thumbnail_images) {
        this.thumbnail_images = thumbnail_images;
    }

    public R_CatCategory getCategories() {
        return categories;
    }

    public void setCategories(R_CatCategory category) {
        this.categories = category;
    }

}

CatCategory 数据模型：

public class R_CatCategory {

    public String getCatTitle() {
        return catTitle;
    }

    public void setCatTitle(String catTitle) {
        this.catTitle = catTitle;
    }

    @SerializedName("title")
    public String catTitle;
}

我的 POJO class :

public class R_CatModelResponse {

    @SerializedName("status")
    public String Cat_status;
    @SerializedName("count")
    public int Cat_count;
    @SerializedName("pages")
    public int Cat_pages;
    @SerializedName("category")
    public Retrofit_ColoniesModel category;
    @SerializedName("posts")
    public List<R_CatModel> Cat_posts;

    public String getCat_status() {
        return Cat_status;
    }

    public void setCat_status(String cat_status) {
        Cat_status = cat_status;
    }

    public int getCat_count() {
        return Cat_count;
    }

    public void setCat_count(int cat_count) {
        Cat_count = cat_count;
    }

    public int getCat_pages() {
        return Cat_pages;
    }

    public void setCat_pages(int cat_pages) {
        Cat_pages = cat_pages;
    }

    public Retrofit_ColoniesModel getCategory() {
        return category;
    }

    public void setCategory(Retrofit_ColoniesModel category) {
        this.category = category;
    }

    public List<R_CatModel> getCat_posts() {
        return Cat_posts;
    }

    public void setCat_posts(List<R_CatModel> cat_posts) {
        Cat_posts = cat_posts;
    }
}

我的适配器代码：

@Override
public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {

        ((DataViewHolder) holder).main_category.setText(Html.fromHtml(mDateSet.get(position).getCategories().getCatTitle()));

但是当运行申请时，给我看这个 logCat :

Error : com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 3901 path $.posts[0].categories

我的Json:

{
    "status": "ok",
    "count": 10,
    "pages": 3,
    "category": {
        "id": 1,
        "slug": "%d8%b3%d8%b1%da%af%d8%b1%d9%85%db%8c",
        "title": "\u0633\u0631\u06af\u0631\u0645\u06cc",
        "description": "\u062a\u0648\u06cc \u0627\u06cc\u0646 \u06a9\u0644\u0648\u0646\u06cc \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0648\u0627\u0633\u0647 \u0633\u0631\u06af\u0631\u0645 \u0628\u0648\u062f\u0646 \u0647\u0633\u062a. \u067e\u0633 \u0628\u062f\u0648 \u0628\u0631\u0648 \u062a\u0648\u0634",
        "parent": 0,
        "post_count": 29
    },
    "posts": [{
        "id": 215,
        "type": "post",
        "slug": "%d8%a7%d9%86%d8%aa%d8%b4%d8%a7%d8%b1-%d8%a2%d9%be%d8%af%db%8c%d8%aa-%d8%a8%d8%b2%d8%b1%da%af-%d8%a8%d8%b1%d8%a7%db%8c-xbox-1",
        "url": "http:\/\/tellfa.com\/tafrihgah\/?p=215",
        "status": "publish",
        "title": "\u0627\u0646\u062a\u0634\u0627\u0631 \u0622\u067e\u062f\u06cc\u062a \u0628\u0632\u0631\u06af \u0628\u0631\u0627\u06cc XBOX 1",
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        "excerpt": "<p>\u0645\u0627\u06cc\u06a9\u0631\u0648\u0633\u0627\u0641\u062a \u0628\u0631\u0648\u0632\u0631\u0633\u0627\u0646 \u0628\u0632\u0631\u06af \u0627\u06cc\u06a9\u0633\u200c\u0628\u0627\u06a9\u0633 \u0648\u0627\u0646 \u0631\u0627 \u0627\u0632 \u0627\u0645\u0631\u0648\u0632 \u0645\u0646\u062a\u0634\u0631 \u06a9\u0631\u062f\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0628\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u060c \u0642\u0627\u0628\u0644\u06cc\u062a\u200c\u0647\u0627\u06cc \u0632\u06cc\u0627\u062f\u06cc \u0631\u0627 \u0628\u0647 \u06a9\u0646\u0633\u0648\u0644 \u0646\u0633\u0644 \u0647\u0634\u062a\u0645\u06cc \u0627\u06cc\u06a9\u0633\u200c\u0628\u0627\u06a9\u0633 \u0627\u0636\u0627\u0641\u0647 \u062e\u0648\u0627\u0647\u062f \u06a9\u0631\u062f\u061b \u0627\u06cc\u0646 \u0642\u0627\u0628\u0644\u06cc\u062a\u200c\u0647\u0627\u060c \u0645\u0646\u0634\u06cc \u0647\u0648\u0634\u0645\u0646\u062f \u0645\u0627\u06cc\u06a9\u0631\u0648\u0633\u0627\u0641\u062a \u06cc\u0639\u0646\u06cc Cortana \u0631\u0627 \u0647\u0645 \u0634\u0627\u0645\u0644 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f.<br \/>\n\u0646\u0633\u062e\u0647\u200c\u06cc \u0627\u06cc\u06a9\u0633\u200c\u0628\u0627\u06a9\u0633 \u06a9\u0648\u0631\u062a\u0627\u0646\u0627\u060c \u06a9\u0627\u0645\u0644\u0627 \u0634\u0628\u06cc\u0647 \u0628\u0647 \u0646\u0633\u062e\u0647\u200c\u06cc \u0648\u06cc\u0646\u062f\u0648\u0632\u06cc \u0622\u0646 \u0637\u0631\u0627\u062d\u06cc <\/p>\n",
        "date": "2016-08-01 19:55:16",
        "modified": "2016-08-01 19:55:16",
        "categories": [{
            "id": 1,
            "slug": "%d8%b3%d8%b1%da%af%d8%b1%d9%85%db%8c",
            "title": "\u0633\u0631\u06af\u0631\u0645\u06cc",
            "description": "\u062a\u0648\u06cc \u0627\u06cc\u0646 \u06a9\u0644\u0648\u0646\u06cc \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0648\u0627\u0633\u0647 \u0633\u0631\u06af\u0631\u0645 \u0628\u0648\u062f\u0646 \u0647\u0633\u062a. \u067e\u0633 \u0628\u062f\u0648 \u0628\u0631\u0648 \u062a\u0648\u0634",
            "parent": 0,
            "post_count": 29
        }],

如何解决这个问题并在我的适配器中加载 jsonObject？
谢谢大家 <3

Answer 1

您期待 categories 的单个类别。

@SerializedName("categories")
public R_CatCategory categories;

虽然您得到的是列表。

"categories": [{
    "id": 1,
    "slug": "%d8%b3%d8%b1%da%af%d8%b1%d9%85%db%8c",
    "title": "\u0633\u0631\u06af\u0631\u0645\u06cc",
    "description": "\u062a\u0648\u06cc \u0627\u06cc\u0646 \u06a9\u0644\u0648\u0646\u06cc \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0648\u0627\u0633\u0647 \u0633\u0631\u06af\u0631\u0645 \u0628\u0648\u062f\u0646 \u0647\u0633\u062a. \u067e\u0633 \u0628\u062f\u0648 \u0628\u0631\u0648 \u062a\u0648\u0634",
    "parent": 0,
    "post_count": 29
}],

因此，改为定义一个能够处理 JSON 数组的类型。

@SerializedName("categories")
public List<R_CatCategory> categories;

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