This article i will introduce how to render PDF from url. This is more convenient and easy method to render PDF in android from url without downloading file in local storage.
Follow steps
To render pdf from url you need library, please add below dependency in your app level gradle file build.gradle(Module:app)
![](https://i.imgur.com/acqUaUO.png")
implementation 'com.github.barteksc:android-pdf-viewer:2.8.2'
Now add below code in your xml file
<com.github.barteksc.pdfviewer.PDFView
android:id="@+id/pdfView"
android:layout_width="match_parent"
android:layout_weight="1"
android:layout_height="0dp"/>
Place below code in your activity inside onCreate and replace myPdfUrl with your actual pdf url
new RetrievePDFStream().execute(myPdfUrl);
add below Async function in your activity outside onCreate
public class RetrievePDFStream extends AsyncTask<String, Void, InputStream> {
ProgressDialog progressDialog;
protected void onPreExecute()
{
progressDialog = new ProgressDialog(LoadPdfActivity.this);
progressDialog.setTitle("Fetching attachment...");
progressDialog.setMessage("Please wait...");
progressDialog.setCanceledOnTouchOutside(false);
progressDialog.show();
}
@Override
protected InputStream doInBackground(String... strings) {
InputStream inputStream = null;
try {
URL urlx = new URL(strings[0]);
HttpURLConnection urlConnection = (HttpURLConnection) urlx.openConnection();
if (urlConnection.getResponseCode() == 200) {
inputStream = new BufferedInputStream(urlConnection.getInputStream());
}
} catch (IOException e) {
return null;
}
return inputStream;
}
@Override
protected void onPostExecute(InputStream inputStream) {
pdfView.fromStream(inputStream)
.enableSwipe(true) // allows to block changing pages using swipe
.swipeHorizontal(false)
.enableDoubletap(true)
.defaultPage(0)
.onError(new OnErrorListener() {
@Override
public void onError(Throwable t) {
Toast.makeText(LoadPdfActivity.this,"Something went wrong, please contact administrator.",Toast.LENGTH_LONG).show();
}
})
.onPageError(new OnPageErrorListener() {
@Override
public void onPageError(int page, Throwable t) {
Toast.makeText(LoadPdfActivity.this,"Something went wrong, please contact administrator.",Toast.LENGTH_LONG).show();
}
})
.enableAnnotationRendering(false) // render annotations (such as comments, colors or forms)
.password(null)
.scrollHandle(null)
.enableAntialiasing(true) // improve rendering a little bit on low-res screens
// spacing between pages in dp. To define spacing color, set view background
.spacing(0).load();
progressDialog.dismiss();
}
}
Now run your app and see your PDF will load in your app