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ActivityNotFoundException is not triggered to open a downloaded PDF file

I want to download a PDF from a url and also want to trigger catch phrase if no PDF Viewer is detected.
Here's my code:
try {
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(materialPdfUrl)));
} catch (ActivityNotFoundException e) {
openDialog(getString(R.string.error),
getString(R.string.no_pdf_reader));
}
Now the problem is that ActivityNotFoundException is never triggered because it always download the PDF even if there is no PDF Viewer around. How do you suggest I do this?
EDIT:
Here's my old code:
Intent pdfIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(materialPdfUrl));
pdfIntent.setType("application/pdf");
pdfIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
startActivity(pdfIntent);

startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(materialPdfUrl)));
is starting an Implicit Intent and therefore will not throw ActivityNotFoundException.
If you read this http://developer.android.com/guide/components/intents-filters.html#ccases
Consider, for example, what the browser application does when the user follows a link on a web page. It first tries to display the data (as it could if the link was to an HTML page). If it can't display the data, it puts together an implicit intent with the scheme and data type and tries to start an activity that can do the job. If there are no takers, it asks the download manager to download the data. That puts it under the control of a content provider, so a potentially larger pool of activities (those with filters that just name a data type) can respond.
Therefore if no PDF viewers are found the Android Download Manager will attempt to download the file (rather than throw that exception).
If you want to view the pdf or be told you cannot view it (rather than download) then you will need to query the system manually using the PackageManager to find out if an application will respond to your intent rather than just firing and forgetting.
FYI ActivityNotFoundException will be thrown for Explicit Intent's something like:
Intent intent = new Intent();
intent.setComponent(new ComponentName("com.facebook","NewsFeedActivity.java"));
startActivity(intent);```

I would recommend using the PackageManager to detect if the system will handle a PDF intent for you.
PackageManager packageManager = context.getPackageManager();
Intent intent = new Intent(Intent.ACTION_VIEW)
.setType("application/pdf");
List<ResolveInfo> list = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY;
if (list.size() > 0) {
// Happy days a PDF reader exists
startActivity(intent);
} else {
// No PDF reader, ask the user to download one first
// or just open it in their browser like this
intent = new Intent(Intent.ACTION_VIEW)
.setData(Uri.parse("http://docs.google.com/gview?embedded=true&url=" + pdfUrl);
startActivity(intent);
}
See this blog post for more info on checking intents. The added benefit of this approach is that you can grey out/remove menu options before the app even tries to execute the Intent. Then you can explain to the user in a slightly more friendly way that they need to grab a PDF viewer app, or indeed apply some logic to fallback to a web based PDF viewer.
Having trialled this approach with Foxit Reader and Adobe Reader they both seem to have different behaviours. Foxit will not download the PDF for you, it will redirect you to the browser and download the file. Adobe will download the file for you then display it.
So to get round this difference once you have detected that a PDF viewer is available then you will probably want to download the PDF to the SD card, for example the downloads folder. This is probably best achieved in an AsyncTask, or you might be able to use the DownloadManager. Then open the local file Uri in the preferred reader. This should get round the difference in behaviour. Maybe open a ticket with Foxit to bring it into line with Adobe? ;)

The function startActivity() you use is not on the condition that the PDF reader is not exist, it only download the PDF from the URL, and if there are PDF Readers then it will offer a selector, just as the function of clicking on a PDF file.

you may try this code. This may helpful to you.
Intent intent = new Intent();
intent.setClassName("com.adobe.reader", "com.adobe.reader.AdobeReader");
intent.setAction(android.content.Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
Uri uri = Uri.fromFile(file);
intent.setDataAndType(uri, "application/pdf");
try {
startActivity(intent);
} catch (Exception e) {
AlertDialog.Builder builder = new AlertDialog.Builder(
getApplicationContext());
builder.setTitle("No Application Found");
builder.setMessage("Download application from Android Market?");
builder.setPositiveButton(
"Yes, Please",
new DialogInterface.OnClickListener() {
#Override
public void onClick(
DialogInterface dialog,
int which) {
Intent marketIntent = new Intent(
Intent.ACTION_VIEW);
marketIntent.setData(Uri
.parse("market://details?id=com.adobe.reader"));
mProgressDialog.dismiss();
startActivity(marketIntent);
}
});
builder.setNegativeButton("No, Thanks",
null);
builder.create().show();
}

That is because your device or emulator does not have an application capable of viewing a local PDF file.
Whenever you start an intent, you should have the native app installed on the emulator to handle that intent. Ex. If you invoke an intent with Maps as the action, you would have to use the Google API's based emulator. By default, android emulator does not have a PDF reader. You could test this on a device with a PDF reader and it should work fine.

use startActivityForResult(..).
See the link here.
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/pdf");
startActivityForResult(intent, REQUEST_CODE);
You will get the result in onActivityResult(..) of your activity.

Android: Open pdf file with the specified software

Now I have downloaded a .pdf file from website and wanna open it with the specified software like "Adobe Reader".How can I achieve this?

You cant. All you can do is fire off an intent and let the system handle it. If the user already has a default app that they've chosen to handle PDFs, that's the one that will open the PDF.
In general it's something like:
File file = new File("/sdcard/example.pdf");
if (file.exists()) {
Uri path = Uri.fromFile(file);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(path, "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(intent);
} .......

I have solved this problem by adding the method "Intent.setComponent(pkg,cls);".
PS: I don Not angry about downing my reps.And thank you for giving me the suggestions.
PSS: What I wanna say is "Not everyone will get the same apple." I post this question for I have this problem and it occured in Android App.And Someone told me "Cannot".I post my answer just to tell you Ive solved this(or just mine) problem,and maybe it will help someone who has the problem same as mine.Yeah,this answer may make no sense to you.
PSSS::-)But I still think the API make sense to me and to its Designer.
*PSSSS:*At last,thank you all.And forgive my poor English.

You should first have a look at the intents filters documentation. Then you can start an intent (after adding the intent filter) for your PDF file.

Opening a PDF from my android app

I'm trying to simply open a PDF from my application when a certain button is clicked by checking if the user has Adobe Reader installed, and if they do, then to open the PDF using Adobe Reader.
I'm pretty sure this is possible, but I'm a little lost as to how I would accomplish this.
Help would really be appreciated!

Basically you can do this by launching pdfreader from your application.Check the following code for that.
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(path,"application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(intent);
}
catch (ActivityNotFoundException e) {
Toast.makeText(OpenPDFNew.this, "NO PDF Viewer is available,Please Download it from Market ", Toast.LENGTH_LONG).show();
}
where path is nothing but actual path for your pdf file.Hope this will help you.

Read the pdf content?

able to open the pdf files . but dont know how to save the content of the pdf file in a array or something then i can show the pdf as i want. can anybody suggest me how to save the pdf content...is there any libraries to use?
following snippet shows how to open a pdf
File file = new File("/sdcard/example1.pdf");
if (file.exists()) {
Uri path = Uri.fromFile(file);
Log.e("path of the file",path.toString());
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(path, "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(intent);
}
catch (ActivityNotFoundException e) {
Toast.makeText(getApplicationContext(),
"No Application Available to View PDF",
Toast.LENGTH_SHORT).show();
}
}
Thanks

You should use iText library..
iText is a Java library originally created by Bruno Lowagie which allows to create PDF, read PDF and manipulate them
here is the link.
http://www.vogella.de/articles/JavaPDF/article.html

Take a look at Mono for Android. It will enable you to develop for Android using C# and .NET and will let you install and access to the iTextSharp library
The iTextSharp is a very extensive and well documented library for creating and manipulating adobe pdf documents.

Displaying PDF in a view in Android

In Android I need to display a PDF file, which is in the asset folder, in a view. Can anyone help me out with the sample code?

I don't think its possible to display it in a view. You will have to make an Intent and then call an external program to do so.
File sd = new File("example.pdf");
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.fromFile(sd));
intent.setDataAndType(Uri.fromFile(sd), "application/pdf");
try {
getContext().startActivity(intent);
} catch(ActivityNotFoundException e){
// Show a message that a PDF viewer is not installed
Toast.makeText("No PDF reader available",Toast.LENGTH_LONG).show();
}