Opening PDF file using Android intent

Question

So here's the Scenario:

I am downloading a PDF from network and saving it in /0/Download/NSIT - Notices/"fileName".pdf

Now sending Intent like this:

private void openPDF(String fileName) {
    Log.d(TAG, "openPDF: called");
    Intent intent = new Intent(Intent.ACTION_VIEW);File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Download", "NSIT - Notices");
    File myPDF = new File(Environment.getExternalStorageDirectory() + "/Download/NSIT - Notices", fileName + ".pdf");
    Uri uri = FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", myPDF);
    Log.d(TAG, "openPDF: intent with uri: " + uri);
    intent.setDataAndType(uri, "application/pdf");
    context.startActivity(Intent.createChooser(intent, "Open with..."));
}

Now any PDF reader (Google Drive PDF Reader, System PDF Viewer) is saying

The File Does Not Exist

Image:

The Google one is sitting not doing anything (that's why not included its image)

Mainfest.xml

<provider
        android:name="android.support.v4.content.FileProvider"
        android:authorities="${applicationId}.provider"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/provider_paths"/>
    </provider>

Provider_path.xml

    <?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path name="external_files" path="."/>
</paths>

I am creating File here in AsyncTask but opening from the postExecute of that AsyncTask

File myDir = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Download", "NSIT - Notices");
            File myPDF = new File(myDir, params[1] + ".pdf");
            if (!myDir.exists())
                myDir.mkdirs();
            try {
                fileOutputStream = new FileOutputStream(myPDF);
                fileOutputStream.write(response.bodyAsBytes());
                fileOutputStream.close();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            Log.d(TAG, "doInBackground: Download complete");

Logcat

Previously it was throwing FileUriExposedException then I fixed with this FileProvider thing. The problem is the pdf file downloaded by my app is created successfully and I am able to open it successfully from any File Manager (ES File Explorer now) but not from my app :(. I am new to FileProvider. Need help!

PS: That's not my device problem either. Tested with two other phones which has different ROMs and API >= 23

Answer 1

Please set intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

It will grant access of your file to other providers