B4X

Google Translate Text

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Demonstrates how to use the Cloud Translation API to translate text from one spoken language to another. The example translates from English to Spanish. B4X

Dim success As Boolean = False

'  This example assumes the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

'  --------------------------------------------------------------------------------
'  IMPORTANT: 
'  Don't forget you need to 1st enable the Cloud Translation API in your Google Developers Console at https://console.cloud.google.com
'  --------------------------------------------------------------------------------

'  It is assumed we previously obtained an OAuth2 access token.
'  This example loads the JSON access token file 
Dim jsonToken As ChilkatJsonObject
jsonToken.Initialize
success = jsonToken.LoadFile("qa_data/tokens/_googleTranslate.json")
If success <> True Then
    Log("Failed to load _googleTranslate.json")
    Return
End If


Dim http As ChilkatHttp
http.Initialize("http")

http.AuthToken = jsonToken.StringOf("access_token")

'  The following JSON is sent in the request body.

'  {
'      "q": "The quick brown fox jumped over the lazy dog.",
'      "source": "en",
'      "target": "es",
'      "format": "text"
'  }

Dim json As ChilkatJsonObject
json.Initialize
'  The following code creates the JSON request body.
json.UpdateString("q", "The quick brown fox jumped over the lazy dog.")
json.UpdateString("source", "en")
json.UpdateString("target", "es")
json.UpdateString("format", "text")

json.EmitCompact = False
Log(json.Emit)

Dim resp As ChilkatHttpResponse
resp.Initialize
success = http.HttpJson("POST", "https://translation.googleapis.com/language/translate/v2", json, "application/json", resp)
If success = False Then
    Log(http.LastErrorText)
    Return
End If


Dim jResp As ChilkatJsonObject
jResp.Initialize
resp.GetBodyJson(jResp)
jResp.EmitCompact = False

Log("Response Body:")
Log(jResp.Emit)

Dim respStatusCode As Int = resp.StatusCode
Log("Response Status Code = " & respStatusCode)
If respStatusCode >= 400 Then
    Log("Response Header:")
    Log(resp.Header)
    Log("Failed.")
    Return
End If


'  Sample JSON response:
'  (Sample code for parsing the JSON response is shown below)

'  {
'    "data": {
'      "translations": [
'        {
'          "translatedText": "El zorro r�pida salt� sobre el perro perezoso."
'        }
'      ]
'    }
'  }

Dim translatedText As String

Dim i As Int = 0
Dim n As Int = jResp.SizeOfArray("data.translations")
Do While i < n
    jResp.I = i
    translatedText = jResp.StringOf("data.translations[i].translatedText")
    Log(translatedText)
    i = i + 1
Loop