I have this webview code and I want to make it possible to have the PDF files opened when a user clicks on a PDF link. Here is the code, can you tell me what I have to put inside the PDF area of this? I've tried many different ways and I cannot get the PDF to view at all. Thanks for the help.
webview.setWebViewClient ( new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// do your handling codes here, which url is the requested url
// probably you need to open that url rather than redirect:
if (url.startsWith("tel:")) {
startActivity(new Intent(Intent.ACTION_DIAL, Uri.parse(url)));
} else if (url.startsWith("mailto:")) {
url = url.replaceFirst("mailto:", "");
url = url.trim();
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("plain/text").putExtra(Intent.EXTRA_EMAIL,
new String[]{url});
startActivity(i);
} else if (url.startsWith("geo:")) {
try {
} catch (Exception e) {
System.out.println(e);
}
} else if (url.endsWith("pdf")) {
try {
} catch (Exception e) {
System.out.println(e);
}
} else {
view.loadUrl(url);
}
return true;
// then it is not handled by default action
}
});
This could be as simple as:
try
{
Intent intentUrl = new Intent(Intent.ACTION_VIEW);
intentUrl.setDataAndType(url, "application/pdf");
intentUrl.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
myActivity.startActivity(intentUrl);
}
catch (ActivityNotFoundException e)
{
Toast.makeText(myActivity, "No PDF Viewer Installed", Toast.LENGTH_LONG).show();
}
though I've not tried this.
In our apps, we DOWNLOAD the PDF to the apps file system, make it world readable, then pass the path in an Intent to open a PDF viewing app (e.g. Acrobat Reader). Please note that you'd also need to also be concerned with cleaning up these downloaded PDF's!
in your try block put
new DownloadPDFTask().execute(url);
DownloadPDFTask class:
public class DownloadPDFTask extends AsyncTask<String, Void, Integer>
{
protected ProgressDialog mWorkingDialog; // progress dialog
protected String mFileName; // downloaded file
protected String mError; // for errors
@Override
protected Integer doInBackground(String... urls)
{
try
{
byte[] dataBuffer = new byte[4096];
int nRead = 0;
// set local filename to last part of URL
String[] strURLParts = urls[0].split("/");
if (strURLParts.length > 0)
mFileName = strURLParts[strURLParts.length - 1];
else
mFileName = "REPORT.pdf";
// download URL and store to strFileName
// connection to url
java.net.URL urlReport = new java.net.URL(urls[0]);
URLConnection urlConn = urlReport.openConnection();
InputStream streamInput = urlConn.getInputStream();
BufferedInputStream bufferedStreamInput = new BufferedInputStream(streamInput);
FileOutputStream outputStream = myActivity.openFileOutput(mFileName,Context.MODE_WORLD_READABLE); // must be world readable so external Intent can open!
while ((nRead = bufferedStreamInput.read(dataBuffer)) > 0)
outputStream.write(dataBuffer, 0, nRead);
streamInput.close();
outputStream.close();
}
catch (Exception e)
{
Log.e("myApp", e.getMessage());
mError = e.getMessage();
return (1);
}
return (0);
}
//-------------------------------------------------------------------------
// PreExecute - UI thread setup
//-------------------------------------------------------------------------
@Override
protected void onPreExecute()
{
// show "Downloading, Please Wait" dialog
mWorkingDialog = ProgressDialog.show(myActivity, "", "Downloading PDF Document, Please Wait...", true);
return;
}
//-------------------------------------------------------------------------
// PostExecute - UI thread finish
//-------------------------------------------------------------------------
@Override
protected void onPostExecute (Integer result)
{
if (mWorkingDialog != null)
{
mWorkingDialog.dismiss();
mWorkingDialog = null;
}
switch (result)
{
case 0: // a URL
// Intent to view download PDF
Uri uri = Uri.fromFile(myActivity.getFileStreamPath(mFileName));
try
{
Intent intentUrl = new Intent(Intent.ACTION_VIEW);
intentUrl.setDataAndType(uri, "application/pdf");
intentUrl.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
myActivity.startActivity(intentUrl);
}
catch (ActivityNotFoundException e)
{
Toast.makeText(myActivity, "No PDF Viewer Installed", Toast.LENGTH_LONG).show();
}
break;
case 1: // Error
Toast.makeText(myActivity, mError, Toast.LENGTH_LONG).show();
break;
}
}
}
any reference to "myActivity" must be replaced with a reference to your Activity class