ionic-s3-uploadphoto-function.ts

uploadPhoto() {
  let loading = this.loader.create({
    title: 'Wait',
    subTitle: 'Uploading...'
  });
  loading.present();

  this.cognitoService
    .getLoggedUser()
    .then(userToken => {
      this.s3Service.upload(this.imageData, this.imageName, userToken).then(
        res => {
          loading.dismiss();
          this.imageName = "";
          this.imageData = "";
          alert("Image uploaded!");
        },
        err => {
          loading.dismiss();
          alert("Error in image upload!");
        }
      );
    })
    .catch(err => console.log(err));
}