Android Question How to download string from a website as a JSON

Sub Activity_Create(FirstTime As Boolean)
    DownloadString    'IMPORTANT: need Json and OkHttpUtils2 libraries
End Sub

Sub DownloadString
    Dim j As HttpJob
    j.Initialize("", Me) 
    j.Download("https://min-api.cryptocompare.com/data/price?fsym=BTC&tsyms=USDT&e=Binance")
    Wait For (j) JobDone(j As HttpJob)
    If j.Success Then
        Dim parser As JSONParser
        parser.Initialize(j.GetString)
        Dim root As Map = parser.NextObject
        Dim USDT As Double = root.Get("USDT")       
        Log("USDT= " & USDT)  'displays: USDT= 3823.19  .The value changes slightly every time you run
    End If
    j.Release
End Sub