fileTransfer.upload in the not call the api

Ionic Framework ionic-v3
1

I want to audio record and then upload audio on server
Audio is record and store in local storage but i can’t upload in the server

startRecord() {
if (this.platform.is(‘ios’)) {
this.fileName = ‘record’ + new Date().getDate() + new Date().getMonth() + new Date().getFullYear() + new Date().getHours() + new Date().getMinutes() + new Date().getSeconds() + ‘.wav’;
this.filePath = this.file.documentsDirectory.replace(/file:///g, ‘’) + this.fileName;
this.audio = this.media.create(this.filePath);
} else if (this.platform.is(‘android’)) {
this.fileName = ‘record’ + new Date().getDate() + new Date().getMonth() + new Date().getFullYear() + new Date().getHours() + new Date().getMinutes() + new Date().getSeconds() + ‘.wav’;
this.filePath = this.file.externalDataDirectory.replace(/file:///g, ‘’) + this.fileName;
this.audio = this.media.create(this.filePath);
}
this.audio.startRecord();
this.recording = true;
}
stopRecord() {
this.audio.stopRecord();

alert(JSON.stringify(this.audio));
let data = { filename: this.fileName };
this.audioURI = this.filePath;
// alert();
alert(JSON.stringify(data));
this.audioList.push(data);
localStorage.setItem("audiolist", JSON.stringify(this.audioList));
this.recording = false;


let filePathBase: string = this.filePath;
this.base64.encodeFile(filePathBase).then((base64File: string) => {
  console.log(base64File);
  alert(base64File);
}, (err) => {
  console.log(err);
  alert(err);
});

 this.uploadFile();

}

uploadFile() {

let options: FileUploadOptions = {
fileKey: ‘file’,
fileName: this.fileName,
chunkedMode: false,
mimeType: “audio/wav”,
httpMethod: ‘POST’,
headers: { ‘Content-Type’: ‘multipart/form-data’ }

}

const fileTransfer: FileTransferObject = this.transfer.create();

this.apiUrlAudio = 'http://example/api/webservices/audio_upload';

fileTransfer.upload(this.filePath, encodeURI(this.apiUrlAudio), options)
.then((data) => {
// success
console.log(data);
alert(“suc”);
}, (err) => {
// error
alert(“suc”);
console.log(err);
})

}