account.ts

  upload(loading: any) {
    let self = this;
    if (self.selectedPhoto) {
      this.s3.upload({
        'Key': 'protected/' + self.sub + '/avatar',
        'Body': self.selectedPhoto,
        'ContentType': 'image/jpeg'
      }).promise().then((data) => {
        this.refreshAvatar();
        console.log('upload complete:', data);
        loading.dismiss();
      }).catch((err) => {
        console.log('upload failed....', err);
        loading.dismiss();
      });
    }
    loading.dismiss();
      
  }