如何在没有 api 密钥的情况下使用改造调用 REST api 并将其显示在 Android 的列表视图中？

Question

REST API 是“ http://citywall.in/category.php ”

O/P 代码：

{
    "category": [{
        "id": "1",
        "name": "Recipe",
        "image": "receipe.jpg",
        "createdDate": "2019-03-27 00:00:00"
    }, {
        "id": "2",
        "name": "Gardening",
        "image": "gardening.jpg",
        "createdDate": "2019-03-27 00:00:00"
    }, {
        "id": "3",
        "name": "Services",
        "image": "services.jpg",
        "createdDate": "2019-03-27 00:00:00"
    }, {
        "id": "4",
        "name": "Tourism",
        "image": "tourism.jpg",
        "createdDate": "2019-03-27 00:00:00"
    }, {
        "id": "5",
        "name": "Lifestyle",
        "image": "lifestyle.jpg",
        "createdDate": "2019-03-27 00:00:00"
    }, {
        "id": "6",
        "name": "Other",
        "image": "other.jpg",
        "createdDate": "2019-03-27 00:00:00"
    }]
}

Answer 1

拳头你需要实例化改造：

   Retrofit retrofit = new Retrofit.Builder()
    .baseUrl("http://citywall.in/")
    .build();

然后你应该创建和接口，其中Category是类别列表中每个项目对应的 Class：

public interface CategoryServiceInterface{
    @Get("/category.php")
    Call<Response> getCategoryList(); 
}

Response类是一个数据类：

   public class Response{
        @SerializedName("category")
        private List<Category> categoryList = new ArrayList()

        /**
            Getters and setters....
        */
   }

   public class Category{
       @SerializedName("id")
       private String id;
       @SerializedName("name")
       private String name;
       @SerializedName("image")
       private String imageName;
       @SerializedName("createdDate")
       private Date createdDate;

       /**
            Getters and setters....
        */
   }

现在你有了所有的基础。 只需拨打以下电话：

   CategoryServiceInterface service = retrofit.create(CategoryServiceInterface.class)

   Response response = service.getCategoryList().body()

现在您需要在 android 列表中出现数据模型。 有关更多详细信息，请参阅以下链接。： https : //square.github.io/retrofit/