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Able to access the Google Picker only once in a while. Google Picker Popup doesn't opens every time when I open the application.

I'm implementing Google Picker API in Angular 6. I kept separate file for the logic behind connecting the Google API in the assets folder of angular and by the help of document.createElement("script"), appended the javascript file. And I have an Anchor tag to getElementById in appponent.html.

appponent.html

<a routerLink="/" id="AllFilePick" #AllFilePick> Button </a>

appponent.ts

    import { Component, ViewChild, ElementRef, OnInit } from '@angular/core';


    @Component({
      selector: 'app-root',
      templateUrl: './appponent.html',
      styleUrls: ['./appponent.scss']
    })


    export class AppComponent implements OnInit {

      @ViewChild('AllFilePick') AllFilePick: ElementRef;

      constructor(private elementRef: ElementRef) { }


      ngOnInit() { 

        var s1 = document.createElement("script");
        s1.type = "text/javascript";
        s1.src = "../assets/api-script.js";
        this.elementRef.nativeElement.appendChild(s1);

        var s2 = document.createElement("script");
        s2.src = "=<API_KEY>";
        this.elementRef.nativeElement.appendChild(s2);

        var s3 = document.createElement("script");
        s3.src = ".js?onload=SetPicker";
        this.elementRef.nativeElement.appendChild(s3);

        // console.log(this.AllFilePick.nativeElement);
        console.log(s1);
        console.log(s2);
        console.log(s3);

      }
    }

I even tried using ngAfterViewInit, constructor for appending the script tag.

assets/api-script.js

    function SetPicker() {
        var picker = new FilePicker(
            {
                apiKey: ‘<API_KEY>’, 
                clientId: ‘<CLIENT_ID>’,
                buttonEl: document.getElementById("AllFilePick"),
                onClick: function (file) {             
                    PopupCenter('/' + file.id + '/view', "", 1026, 500);
                }
            }
        );
    }

    function PopupCenter(url, title, w, h)
    {
       //.....
    }

    function FilePicker(User)
    {
        //Configuration 
        //....
    }

The Above full version code runs properly but pop-up opens rarely, once in a while. Pop up triggers only after refreshing the application for several times or Opening the application next day. Picker doesn't works regularly in the Angular.

Able to access the Google Picker only once in a while. Google Picker Popup doesn't opens every time when I open the application.

I'm implementing Google Picker API in Angular 6. I kept separate file for the logic behind connecting the Google API in the assets folder of angular and by the help of document.createElement("script"), appended the javascript file. And I have an Anchor tag to getElementById in app.ponent.html.

app.ponent.html

<a routerLink="/" id="AllFilePick" #AllFilePick> Button </a>

app.ponent.ts

    import { Component, ViewChild, ElementRef, OnInit } from '@angular/core';


    @Component({
      selector: 'app-root',
      templateUrl: './app.ponent.html',
      styleUrls: ['./app.ponent.scss']
    })


    export class AppComponent implements OnInit {

      @ViewChild('AllFilePick') AllFilePick: ElementRef;

      constructor(private elementRef: ElementRef) { }


      ngOnInit() { 

        var s1 = document.createElement("script");
        s1.type = "text/javascript";
        s1.src = "../assets/api-script.js";
        this.elementRef.nativeElement.appendChild(s1);

        var s2 = document.createElement("script");
        s2.src = "https://www.google./jsapi?key=<API_KEY>";
        this.elementRef.nativeElement.appendChild(s2);

        var s3 = document.createElement("script");
        s3.src = "https://apis.google./js/client.js?onload=SetPicker";
        this.elementRef.nativeElement.appendChild(s3);

        // console.log(this.AllFilePick.nativeElement);
        console.log(s1);
        console.log(s2);
        console.log(s3);

      }
    }

I even tried using ngAfterViewInit, constructor for appending the script tag.

assets/api-script.js

    function SetPicker() {
        var picker = new FilePicker(
            {
                apiKey: ‘<API_KEY>’, 
                clientId: ‘<CLIENT_ID>’,
                buttonEl: document.getElementById("AllFilePick"),
                onClick: function (file) {             
                    PopupCenter('https://drive.google./file/d/' + file.id + '/view', "", 1026, 500);
                }
            }
        );
    }

    function PopupCenter(url, title, w, h)
    {
       //.....
    }

    function FilePicker(User)
    {
        //Configuration 
        //....
    }

The Above full version code runs properly but pop-up opens rarely, once in a while. Pop up triggers only after refreshing the application for several times or Opening the application next day. Picker doesn't works regularly in the Angular.

• javascript
• angular
• typescript
• google-api
• google-picker

Share Improve this question Follow edited Jul 25, 2018 at 21:38 Arun S asked Jul 25, 2018 at 15:43 Arun SArun S 5111 silver badge55 bronze badges

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 6

In index.html

 <script type="text/javascript" src="https://apis.google./js/api.js"></script>
  <script src="https://apis.google./js/platform.js"></script>

In ponent template (.html) file.

<button (click)="loadGoogleDrive()"><G-Drive</button>

In Component (.ts file).

import { Component } from '@angular/core';
declare var gapi: any;
declare var google: any;

@Component({
  selector: 'app-selector',
  templateUrl: './app-selector.ponent.html',
  styleUrls: ['./app-selector.ponent.css']
})
export class GoogleDriveSelectorComponent {

  developerKey = 'developer/API key here';
  clientId = "client_id"
  scope = [
    'profile',
    'email',
    'https://www.googleapis./auth/drive'//insert scope here
  ].join(' ');
  pickerApiLoaded = false;
  oauthToken?: any;

  loadGoogleDrive() {
    gapi.load('auth', { 'callback': this.onAuthApiLoad.bind(this) });
    gapi.load('picker', { 'callback': this.onPickerApiLoad.bind(this) });
  }

  onAuthApiLoad() {
    gapi.auth.authorize(
      {
        'client_id': this.clientId,
        'scope': this.scope,
        'immediate': false
      },
      this.handleAuthResult);
  }

  onPickerApiLoad() {
    this.pickerApiLoaded = true;
  }

  handleAuthResult(authResult) {
    let src;
    if (authResult && !authResult.error) {
      if (authResult.access_token) {
        let view = new google.picker.View(google.picker.ViewId.DOCS);
        view.setMimeTypes("image/png,image/jpeg,image/jpg,video/mp4");
        let pickerBuilder = new google.picker.PickerBuilder();
        let picker = pickerBuilder.
          enableFeature(google.picker.Feature.NAV_HIDDEN).
          setOAuthToken(authResult.access_token).
          addView(view).
          addView(new google.picker.DocsUploadView()).
          setCallback(function (e) {
            if (e[google.picker.Response.ACTION] == google.picker.Action.PICKED) {
              let doc = e[google.picker.Response.DOCUMENTS][0];
              src = doc[google.picker.Document.URL];
              console.log("Document selected is", doc,"and URL is ",src)
            }
          }).
          build();
        picker.setVisible(true);
      }
    }
  }

}

In Index.html

<script type="text/javascript" src="https://apis.google./js/api.js?onload=loadPicker"></script>

Create a Service like googleDrivePickerService (.service.ts)

import {Injectable} from '@angular/core';

declare const gapi: any;
declare const google: any;

@Injectable({
  providedIn: 'root'
})
export class GoogleDrivePickerService {

  private clientId = 'YOUR_CLIEND_ID';
  private apiKey = 'YOUR_API_KEY';
  private appId = 'YOUR_APP_ID';
  private scope = 'https://www.googleapis./auth/drive.file',

  private oauthAccessToken = null;
  private pickerApiLoaded = false;
  private pickerCallback = null;

  public open(callback): void {
    this.pickerCallback = callback;
    gapi.load('auth', {'callback': this.onAuthApiLoad.bind(this)});
    gapi.load('picker', {'callback': this.onPickerApiLoad.bind(this)});
  }

  private onAuthApiLoad(): void {
    gapi.auth.authorize({
      'client_id': this.clientId,
      'scope': this.scope,
      'immediate': false,
    }, this.handleAuthResult.bind(this));
  }

  private onPickerApiLoad(): void {
    this.pickerApiLoaded = true;
    this.createPicker();
  }

  private handleAuthResult(authResult): void {
    if (authResult && !authResult.error) {
      this.oauthAccessToken = authResult.access_token;
      this.createPicker();
    }
  }

  private createPicker(): void {
    if (this.pickerApiLoaded && this.oauthAccessToken) {
      let view = new google.picker.View(google.picker.ViewId.DOCS);
      let picker = new google.picker.PickerBuilder()
        .enableFeature(google.picker.Feature.NAV_HIDDEN)
        .enableFeature(google.picker.Feature.MULTISELECT_ENABLED)
        .setAppId(this.appId)
        .setOAuthToken(this.oauthAccessToken)
        .addView(view)
        .addView(new google.picker.DocsUploadView())
        .setDeveloperKey(this.apiKey)
        .setCallback(this.pickerCallback)
        .build();
      picker.setVisible(true);
    }
  }
}

In your Component (.ts), Import the service and add in the constructor then finally call the open function with a callback.

import {GoogleDrivePickerService} from '../services/googledrivepicker.service';

constructor(
  private googleDrivePickerService: GoogleDrivePickerService
){}

openGoogleDrivePicker(): void {
  this.googleDrivePickerService.open((data) => {
    if (data.action === 'picked') {
      console.log('Picked', data.docs);
    }
  });
}

click here How to implement SignIn with Google in Angular 2 using Typescript and just create index.html in your app folder u will 100% solve this problem bcoz same problem was with me.

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