Android - Obtain Uri to image on sdcard - android

I have the absolute path to a .jpg in the gallery.
How can I obtain a 'content://' Uri to this image, so that I can use this Uri like this:
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
I need to launch this intent so I can view the image.
How do I obtain the uri, when I have got only the absolute path to the image?


First you need to read the file from your SDCard.
See:
reading a specific file from sdcard in android
http://developer.android.com/reference/java/io/File.html
File dir = Environment.getExternalStorageDirectory();
File yourFile = new File(dir, "path/to/the/file/inside/the/sdcard.ext");
Then call the File.toUri() method to retreive the URI from the file.
Intent intent = new Intent(Intent.ACTION_VIEW, yourFile.toURI());
startActivity(intent);

Related

why does Uri.fromFile(new File(url)) work and Uri.parse(url) not in open pdf by intent?

The code below can open pdf file by intent and works well:
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File(url)), "application/pdf");
if(intent.resolveActivity(getPackageManager()) != null){
startActivity(intent);
}
but if I change Uri.fromFile(new File(url)) to Uri.parse(url), just like below, and it will fail to open pdf file. Why?
intent.setDataAndType(Uri.parse(url), "application/pdf");
I know the class type of instance that the two method return is different, but is this the key that the code above works?
By the way, the url is right and the file exists.

Uri is Type used to provide content to the ContentProvider. The uri is the path to a pdf file right? How would Uri.parse know that what you're passing it is a pdf and not just a url? This is why fromFile is needed.

Want to pick image files from a specific folder but have all the files of gallery instead

Want to pick image files from a specific folder vaibhav but have all the files of gallery instead.
Code
File dir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "Vaibhav/");
Log.e("Dir path",dir.toString());
dir.exists();
Uri uri = Uri.parse(dir.toString());
Intent browseIntent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.getContentUri(uri.toString()));
browseIntent.setType("image/jpg");
startActivityForResult(browseIntent, BROWSE_REQUEST);

Following Code Just Works Fine:
public void openFolder()
{
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
Uri uri = Uri.parse(Environment.getExternalStorageDirectory().getPath()
+ "/Vaibhav/");
intent.setDataAndType(uri, "image/jpg");
startActivity(Intent.createChooser(intent, "Open folder"));
}

Use
browseIntent.setDataAndType(uri, "image/.");//Loads all image files
Instead of
browseIntent.setType("image/jpg");

Display all pdf files in a folder using MuPdf

With the below code I'm able to display the pdf file by specifying its path.
String path = Environment.getExternalStorageDirectory().toString()+"sample/pdf/Page2.pdf";
Uri uri = Uri.parse(path);
Intent intent = new Intent(mContext, MuPDFActivity.class);
intent.setAction(Intent.ACTION_VIEW);
intent.setData(uri);
startActivity(intent);
In the /sample/pdf/ folder I've few pdf files.
How can I display all the pdf files as viewpager using MuPdf?
I need the pdf view as below.

Open PDF in Android

I would like to open a PDF file from my android application. I've searched how to do it in internet, and it seems very easy, but it doesn't work, at least in my mobile (Sony XPeria P).
File file = ....
Intent intent = new Intent(Intent.ACTION_VIEW,
Uri.fromFile (file));
intent.setType("application/pdf");
startActivity(intent);
When this code is executed, a window is opened asking to choose an application to show the PDF. When I choose the Adobe Reader, it's opened by no document is shown.
What I'm doing wrong?

Try this, Its working for me
//Method to open the pdf file in the PDF Viewer
public void OpenPDFFile() {
File pdfFile = new File(Environment.getExternalStorageDirectory(),"PdfFile.pdf");//File path
if (pdfFile.exists()) //Checking for the file is exist or not
{
Uri path = Uri.fromFile(pdfFile);
Intent objIntent = new Intent(Intent.ACTION_VIEW);
objIntent.setDataAndType(path, "application/pdf");
objIntent.setFlags(Intent. FLAG_ACTIVITY_CLEAR_TOP);
startActivity(objIntent);//Staring the pdf viewer
}
}

The setType("application/pdf") function removes all the previous data.

If the targetSdkVersion >= 24 we need to use file provider to get the Uri. See this post for details: https://stackoverflow.com/a/38858040/8192914
So, the final code would look something like this:
Uri pathUri = FileProvider.getUriForFile(getBaseContext(), context.getApplicationContext().getPackageName() + ".provider", finalFile);
Intent pdfViewerIntent = new Intent(Intent.ACTION_VIEW);
pdfViewerIntent.setDataAndType(pathUri, "application/pdf");
pdfViewerIntent.setFlags(Intent. FLAG_ACTIVITY_CLEAR_TOP);
pdfViewerIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
startActivity(pdfViewerIntent);

How can I show file in sdcard to user?

I want to show user my apk file using intents, here is the code:
SDCardRoot = Environment.getExternalStorageDirectory();
File file = new File(SDCardRoot,fileName);
if (file.exists()) {
Uri path = Uri.fromFile(file);
Intent intent = new
Intent(Intent.ACTION_VIEW,path);
startActivity(intent);
but it is giving me ActivityNotFoundException,I want to start the apk file so that user can install it.

Try this?
Uri path = Uri.fromFile(file);
Intent intent = new
Intent(Intent.ACTION_VIEW,path);
intent.setDataAndType(path, "application/vnd.android.package-archive");
startActivity(intent);

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