Showing pdf in a webview without downloading

import android.app.DownloadManager;
import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.renderscript.Sampler;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.text.Html;
import android.view.ViewGroup;
import android.webkit.DownloadListener;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import com.amazonaws.Request;

import javax.security.auth.callback.Callback;

public class WebViewActivity extends AppCompatActivity {
    String url;
    WebView webView;
    ProgressDialog progressBar;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.webview_pdf);
        url = getIntent().getStringExtra("url");
        webView = findViewById(R.id.webViewpdf);
        WebSettings webSettings = webView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        progressBar=ProgressDialog.show(this,"","loading");

//"https://docs.google.com/gview?embedded=true&url="  this is the online google viewer

        webView.loadUrl("https://docs.google.com/gview?embedded=true&url=" + url);


        webView.setWebViewClient(new WebViewClient() {

// this is used for showing the progress until the page stops loading
            public void onPageFinished(WebView view, String url) {
                if (progressBar.isShowing()) {
                    progressBar.dismiss();
                }
            }
        });


    }
}