Android帐户转移API:在哪里获取AccountTransferClient.sendData(accountType,transferData)的transferData?

找到了示例应用程序 https://github.com/android/identity-samples/tree/main/AccountTransferApi 显然,他们所做的是将帐户信息放入JSON obj中,然后将JSON obj转换为字节数组(即transferData)。

val jsonArray = JSONArray()
for (account in accounts) {
    val accountJsonObject = JSONObject()
    try {
        accountJsonObject.put(KEY_ACCOUNT_NAME, account.name)
        val password = accountManager.getPassword(account)
        accountJsonObject.put(KEY_ACCOUNT_PASSWORD, password)
    } catch (e: JSONException) {
        Log.e(TAG, "Error while creating bytes for transfer", e)
        return null
    }
    jsonArray.put(accountJsonObject)
}
val jsonObject = JSONObject()
try {
    jsonObject.put(KEY_ACCOUNT_ARRAY, jsonArray)
} catch (e: JSONException) {
    Log.e(TAG, "Error", e)
    return null
}
val transferData = jsonObject.toString().toByteArray(Charset.forName("UTF-8"))

无论如何,强烈推荐示例应用程序。文档不够清晰!