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POVIEW intent from a Content Provider URI?
 

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    <p>I have some requirements to protect some sensitive data. The data is downloaded as a PDF from a URL and saved as an Application Private file using the following code:</p> <pre><code>public File downloadPDF(final Context fileContext, Uri reportUri, final String fileName) { try { HttpGet get = new HttpGet(reportUri.toString()); File file = httpClient.execute(get, new ResponseHandler&lt;File&gt;() { @Override public File handleResponse(HttpResponse response) throws ClientProtocolException, IOException { if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { response.getEntity().writeTo(fileContext.openFileOutput(fileName, Context.MODE_WORLD_READABLE)); return fileContext.getFileStreamPath(fileName); } return null; } }); return file; } catch (IOException e) { Log.e(TAG, "Unable to download report.", e); } return null; } </code></pre> <p>Now, what I'd like to do is change this to using Context.MODE_PRIVATE and create a ContentProvider so that my application has complete control over the sharing of this file to a PDF reader such as Adobe Reader. Is this possible? I currently use code like the following to pass the report URI to the currently configured PDF reader. </p> <pre><code> // Fire up a PDF viewer intent for the URL. Intent intent = new Intent(Intent.ACTION_VIEW); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setDataAndType(uri, "application/pdf"); startActivity(intent); </code></pre> <p>Would the same work through a ContentProvider type URI? A content://package/fileid type URI? I'll be trying a little spike tomorrow to see if I can, but if anyone knows that only file:// URIs are allowed, it would be really helpful.</p> <hr> <p><strong>UPDATE</strong></p> <p>I was able to solve my problem satisfactorily by implementing a ContentProvider subclass with the following method overridden:</p> <pre><code>@Override public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException { // The filename is the path in the URI without the initial slash. String fileName = uri.getPath().substring(1); File file = getContext().getFileStreamPath(fileName); return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY); } </code></pre> <p>Then, when I fire off the viewing intent, it is rewritten something like the following:</p> <pre><code>Intent intent = new Intent(Intent.ACTION_VIEW); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); Uri uri = Uri.withAppendedPath(Uri.parse("content://providername/"),filePath); intent.setData(uri); startActivity(intent); </code></pre> <p>And in my case, I use Adobe Reader, which properly implements the loading from <code>content://</code> URIs.</p>
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