c# - How to connect my Xamarin Android App to Google Speech Cloud API? -


i trying connect app google speech cloud, created credential is:

{ "type": "service_account", "project_id": "brastempinho", "private_key_id": "f87474dab95730dee217f6eb0cdb843c385cf2e3", "private_key": "-----begin private key-----\nmiievqibadanbgkqhkig9w0baqefaascbkcwggsjageaaoibaqcp2j74h/o1mx4f\n1w2hevajycqlqmqspxdnffbymr00dbjoiz4ghtwruqev7olrzez1veynhk0zkqd6\nzcoxjqllcczhavcudvixeqt0h2ssntimbjn9bvkwoysgeojaumtxfvfmyfv6vhdd\nqwgbazdyzz9efsxvnvimsrnr23uxbrweedk35sqo5xqimxhdfqrsoi/lgoza/1ne\nsgkxr7bhzgapwwpfiu2kgvfoltkypycy0djubnv8nv+wz+aqj1z9vsguznfjq3zj\nfw5u9o4f9j7yxfx1ucz1zwoegbcpbag7tij5wuwki3adgzz8qoiavdvc4ipjwzfw\njgvnhwvnagmbaaecggeadub3aj0ynvfc8ehixvg5ubai4f+l/v8tsyencfwru9hy\nyrsnuaolozwcnfstskerovt2bftxskpbnvzxnkuxgugi9hnzlqk26wsgwr0jpq5l\nepeixyesauib1qrgr+zuhnc4j9xuzogaqdn0xfib0zhsu89ffrxgciqhydq8bsdd\ng3+3xk8htslautg3nrrjzgy4+5y82qemfaqega59wic40ihxjejjwiccp9f5fjfu\njtxpdk/4rrlgj8gf5+wt6di6wilmby4uf5s8g9hhkifbbaur8est3ffdzfxubuxw\ntyvnk0lv3ffubqiogxeka2bqayxugpjcbejdhtp/kqkbgqdtnmie8yn2a2clvj9b\n0jh3njexqdjxrn9cjjn9orudrd8mfawstvzqlw2pbcwlsd5d+vadkn/xwjum+4xj\nttw/qgrg4jad+detyscgo648x1dwpw9f4dbafqpstufp2dk1vgx4niikb5pusmbn\n4ml1ql5p3skk6u245ioomjvecqkbgqdn4dvttdtaebrpiwh8ztykjq5+uuqcd7ic\nggp+911vovqrxliah35adowcrmgjg5+9l4mt9cqmf0qyzfgdblspteanqnps3wyc\n154+awmfhc4ghkwvu4ba4tsqeayzwdfyfop2hopzanwuyfywdhrq9rkcm1rdke9/\ni+nttohl1wkbgchi/h5e3kbhjvpgxn/frcwafo0ryqyabh0dqf1t1haanbm9554n\ngpmegwt265m9r5ngvasury53lstq+kdbtsz4zjqsjjpav4ukey4qfp2ewo+03mt0\n77caya0izijuzfzp5vhgodx9ompr1qxjwr3+twktkqxebn7zfdntxpjraogasilu\ny7hqivegsr61zw7gbq/kg+zjpwzqwwb6phjvnmiy+ndk30hvwln6fg3dsb6htezd\niocp5s5diwzb4aysrcgjclu2puummvmzd02yyfj2a1dzebuvzxnpe9zkcdirjcc4\ntzz3wdpm8a1jfxjpsytg8kfzqnviwnfsmapaftecgyeamag5myjsebbvtzp4trha\nhozhz+yreg+jgebd4a774esdza3vnabydxuq3+supda0dw5oox/laobudykjczyl\nvjsiobfiasmwjo26c1qjrx2lrym+bmvpgluhczyiozo13/6cchbqzk3amrbrinuj\ne07bia5narh+t6l+tvfaiwu=\n-----end private key-----\n", "client_email": "961053661712-compute@developer.gserviceaccount.com", "client_id": "108116634113879261923", "auth_uri": "https://accounts.google.com/o/oauth2/auth", "token_uri": "https://accounts.google.com/o/oauth2/token", "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs", "client_x509_cert_url":  "https://www.googleapis.com/robot/v1/metadata/x509/961053661712-compute%40developer.gserviceaccount.com"

}

and code i'm using is:

using android.os; using android.support.v4.app; using android.views; using google.cloud.speech.v1; using system; using google.apis.auth.oauth2; using system.threading.tasks; using system.text; using system.io; using system.threading; using system.net.http;  namespace whirlpoolapp.fragments { public class fragment1 : fragment {        public override void oncreate(bundle savedinstancestate)     {         base.oncreate(savedinstancestate);         task<string> cred = authenticateasync();         system.environment.setenvironmentvariable("google_application_credentials", "/storage/9016-4ef8/config/brastempinho-f87474dab957.json");         var speech = speechclient.create();         var response = speech.recognize(new recognitionconfig()         {             encoding = recognitionconfig.types.audioencoding.linear16,             sampleratehertz = 16000,             languagecode = "en",         }, recognitionaudio.fromfile("audio.raw"));         foreach (var result in response.results)         {             foreach (var alternative in result.alternatives)             {                 console.writeline(alternative.transcript);             }         }     }      public static fragment1 newinstance()     {         var frag1 = new fragment1 { arguments = new bundle() };         return frag1;     }       public override view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate)     {         var ignored = base.oncreateview(inflater, container, savedinstancestate);         return inflater.inflate(resource.layout.fragment1, null);      }      public async task<string> authenticateasync()     {         try         {             string filepath = path.combine("/storage/9016-4ef8/config/brastempinho-f87474dab957.json");              byte[] authbytes = null;             filestream fs = new filestream(filepath,                                            filemode.open,                                            fileaccess.read);             binaryreader br = new binaryreader(fs);             long numbytes = new fileinfo(filepath).length;             authbytes = br.readbytes((int)numbytes);              //byte[] authbytes = await   ileasync(filepath).configureawait(false);             string authstring = encoding.ascii.getstring(authbytes);              googlecredential credential = googlecredential.fromjson(authstring);             credential = credential.createscoped("https://www.googleapis.com/auth/cloud-platform");              string token = await credential.underlyingcredential.getaccesstokenforrequestasync().configureawait(false);              return token;         }         catch (exception e)         {              return e.message;         }      }  }

}

my question is: how can call google speech cloud on xamarin android start using chatbot? want create app recognizes voices , transform on text talk bot ibm conversation does.


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