Question

我在这里有一个现有json的样本，
我的问题是我需要将其转换为Kotlin，
我是Kotlin的新手，正在阅读很多教程，但是
从那以后我还没有样品如此复杂。

这是JSON

{
"mobile": {
    "id":"1",
    "Device": {
        "Device Name": "Huawei P30 Pro",
        "Price": "10000",
        "rating": "3.4",
        "phone_img_url": "https://fdn2.gsmarena.com/vv/bigpic/huawei-mate30-pro-.jpg", 
        "Category": "Phablet",
        "Description": {
            "Network": ["GSM", "HSPA", "LTE"],
            "Launch": {
                "Announced Date": "2019, September",
                "Status": "Available. Released 2019, September"
            },
            "Body": {
                "Dimension": "158.1 x 73.1 x 8.8 mm (6.22 x 2.88 x 0.35 in)",
                "Weight": "198 g (6.98 oz)",
                "Build": "Front/back glass (Gorilla Glass 6), aluminum frame",
                "Network": [
                    "Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)", 
                    "IP68 dust/water resistant (up to 1.5m for 30 mins)"],
                "Display":{
                    "Type": "OLED capacitive touchscreen, 16M colors",
                    "Size": "6.53 inches, 108.7 cm2 (~94.1% screen-to-body ratio)",
                    "Resolution": "1176 x 2400 pixels, 18.5:9 ratio (~409 ppi density)",
                    "Protection": ["Corning Gorilla Glass 6",
                        "DCI-P3",
                        "HDR10"
                    ]
                }
            }
        }
    },
    "id":"2",
    "Device": {
        "Device Name": "Xiaomi Redmi Note 8 Pro",
        "Price": "15000",
        "rating": "3.4",
        "Category": "Phablet",
        "Description": {
            "Network": ["GSM", "HSPA", "LTE"],
            "Launch": {
                "Announced Date": "2019, August",
                "Status": "Available. Released 2019, September"
            },
            "Body": {
                "Dimension": "161.4 x 76.4 x 8.8 mm (6.35 x 3.01 x 0.35 in)",
                "Weight": "200 g (7.05 oz)",
                "Build": "Front/back glass (Gorilla Glass 5)",
                "Network": [
                    "Hybrid Dual SIM (Nano-SIM, dual stand-by)"],
                "Display":{
                    "Type": "IPS LCD capacitive touchscreen, 16M colors",
                    "Size": "6.53 inches, 104.7 cm2 (~84.9% screen-to-body ratio)",
                    "Resolution": "1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)",
                    "Protection": ["Corning Gorilla Glass 6",
                        "500 nits max brightness",
                        "HDR"
                    ]
                }
            }
        }
    },
    "id":"3",
    "Device": {
        "Device Name": "Huawei P30 Pro",
        "Price": "17000",
        "rating": "3.4",
        "Category": "Phablet",
        "Description": {
            "Network": ["GSM", "HSPA", "LTE"],
            "Launch": {
                "Announced Date": "2019, March",
                "Status": "Available. Released 2019, March"
            },
            "Body": {
                "Dimension": "158 x 73.4 x 8.4 mm (6.22 x 2.89 x 0.33 in)",
                "Weight": "192 g (6.77 oz)",
                "Build": "Front/back glass, aluminum frame",
                "Network": [
                    "Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)", 
                    "IP68 dust/water resistant (up to 2m for 30 mins)"],
                "Display":{
                    "Type": "OLED capacitive touchscreen, 16M colors",
                    "Size": "6.47 inches, 102.8 cm2 (~88.6% screen-to-body ratio)",
                    "Resolution": "1080 x 2340 pixels, 19.5:9 ratio (~398 ppi density)",
                    "Protection": ["DCI-P3",
                        "HDR10"
                    ]
                }
            }
        }
    }           
}

}

目前，我确实有一个简单的代码，但没有返回“手机”的完整列表。
这是我的示例对象

class Phone (
val mobile: PhoneList
)

data class PhoneList (
    val id: String,
    val device: DeviceInfo?
)

data class DeviceInfo (
    val device_name: String
)

预先感谢您的帮助。

Answer 1

浏览网站https://app.quicktype.io/
将JSON数据粘贴到左列。
选择源类型-> JSON
选择序列化框架-> Just Types
选择您想要的语言（科林）

您将获得模型类的类型。

class Phone (
    val mobile: List<Mobile>
)

data class Mobile (
    val id: String,
    val device: Device
)

data class Device (
    val deviceName: String,
    val price: String,
    val rating: String,
    val category: String,
    val description: Description
)

data class Description (
    val network: List<String>,
    val launch: Launch,
    val body: Body
)

data class Body (
    val dimension: String,
    val weight: String,
    val build: String,
    val network: List<String>,
    val display: Display
)

data class Display (
    val type: String,
    val size: String,
    val resolution: String,
    val protection: List<String>
)

data class Launch (
    val announcedDate: String,
    val status: String
)

Answer 2

安装此插件：https://plugins.jetbrains.com/plugin/9960-json-to-kotlin-class-jsontokotlinclass-
重新启动Android Studio
右键单击要用于模型类的文件夹，然后选择New> Kotlin data class File from JSON
粘贴JSON内容，然后单击“确定”
将JSON映射到模型类后，就可以使用map来获取设备列表。它将自动生成模型类（必要的时间节省）。

如何将JSON数据转换为Kotlin对象

2 个答案: