java - Android:从 sampledata 文件夹中读取 json

Question

我想用我的自定义 operations.json 文件填充 RecyclerView，该文件保留在 sampledata 文件夹中。我如何读取该示例 json 文件？我的 operations.json 文件如下所示:

{
  "data" :[
    { "name": "123", "image": "@drawable/ic_cloud_download_black_24dp" },
    { "name": "456", "image": "@drawable/ic_arrow_forward_black_24dp" },
    { "name": "789", "image": "@drawable/ic_photo_camera_black_24dp" },
    { "name": "asd", "image": "@drawable/ic_alarm_off_black_24dp" },
    { "name": "qwe", "image": "@drawable/ic_assignment_black_24dp" },
    { "name": "rty", "image": "@drawable/ic_map_black_24dp" },
    { "name": "asd", "image": "@drawable/ic_sms_black_24dp" },
    { "name": "fgh", "image": "@drawable/ic_print_black_24dp" },
    { "name": "zxc", "image": "@drawable/ic_library_books_black_24dp" },
    { "name": "vbn", "image": "@drawable/ic_settings_black_24dp" },
    { "name": "jkl", "image": "@drawable/ic_android_black_24dp" },
    { "name": "yui", "image": "@drawable/ic_tv_black_24dp" },
    { "name": "ert", "image": "@drawable/ic_exit_to_app_black_24dp" }
  ]
}

Answer 1

• 首先创建 Assets 文件夹

• 将您的 json 文件放在 Assets 文件夹中

  

• 按照代码读取json文件

  私有(private)乐趣 loadJSONFromAsset():字符串？ {
val json:字符串？
尝试 {
val inputStream = activity!!.assets.open("search_key.json")
val size = inputStream.available()
val buffer = ByteArray(大小)
inputStream.read(缓冲区)
inputStream.close()
json = 字符串(缓冲区，字符集.UTF_8)
} catch (例如:IOException){
前.printStackTrace()
返回空
}
返回json
}

• 使用 GSON 库解析你的 json

  val data = Gson().fromJson(loadJSONFromAsset(), Data::class.java)