sgApp/src/providers/common.service.ts

import { Injectable } from "@angular/core"
import { PhotoViewer } from '@ionic-native/photo-viewer/ngx';
import { HTTP } from '@ionic-native/http/ngx'

@Injectable({
  providedIn: 'root'
})

export class commonService {
  constructor(private photoViewer: PhotoViewer, private http: HTTP) { }

  fullScreenImg(data) {
    if (typeof data === 'string') {
      this.photoViewer.show(data)
    } else {
      this.photoViewer.show(data.pictures[0].bigPicture);
    }
  }

  convertBase64(url) {
    this.http.get(url, {}, { 'responseType': 'blob' })
      .then(data => {
        console.log(data.status);
        console.log(data.data); // data received by server
        console.log(data.headers);
      })
      .catch(error => {
        console.log(error.status);
        console.log(error.error); // error message as string
        console.log(error.headers);
      });
  }

  getFormatDate = (date) => {
    let currentdate
    if (date) {
      let seperator1 = "-";
      let year = date.getFullYear();
      let month = date.getMonth() + 1;
      let strDate = date.getDate();
      if (month >= 1 && month <= 9) {
        month = "0" + month;
      }
      if (strDate >= 0 && strDate <= 9) {
        strDate = "0" + strDate;
      }
      currentdate = year + seperator1 + month + seperator1 + strDate
    }
    return currentdate;
  }
  // toDataUrl(url, callback) {
  //   var xhr = new XMLHttpRequest();
  //   xhr.onload = function () {
  //     var reader = new FileReader();
  //     reader.onloadend = function () {
  //       callback(reader.result);
  //     }
  //     reader.readAsDataURL(xhr.response);
  //   };
  //   xhr.open('GET', url);
  //   xhr.responseType = 'blob';
  //   xhr.send();
  // }
}