To open the pdf in the browser,
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(pdf_url));
startActivity(browserIntent);
Instead to open in web view,
WebView webView = (WebView) findViewById(R.id.webView1);
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl(pdf_url);
You can see this one: https://stackoverflow.com/questions/23240469/open-online-pdf-file-through-android-intentSecond one: https://stackoverflow.com/questions/2456344/how-to-render-a-pdf-file-in-android/10861538#10861538