File sharing from external storage in android using FileProvider

Single/Multiple image/* files from External storage 

sharing using FileProvider

Step 1:
Create an file_path provider in res>xml file as

file_path.xml

<?xml version="1.0" encoding="utf-8"?>

<paths xmlns:android="http://schemas.android.com/apk/res/android">

  <external-path name="share" path="/"/>

</paths>

Step 2:

Define the File provider in manifest.xml file as

<provider

  android:name="android.support.v4.content.FileProvider"

android:authorities="com.whatsapp.statusdownloader.fileprovider"

  android:exported="false"

  android:grantUriPermissions="true">

  <meta-data

      android:name="android.support.FILE_PROVIDER_PATHS"

      android:resource="@xml/file_paths" />

</provider>

Step 3:

Implement the Button action. For single file share

try {

  //storage/emulated/0/Pictures/RAMP/IMG_19May2018_120740.jpg

  String path = imagePaths.get(viewPager.getCurrentItem());   

  Uri contentUri = FileProvider.getUriForFile(ImageOpeningActivity.this, "com.whatsapp.statusdownloader.fileprovider", new File(path))

  String shareable = "Status and File Downloader for whatsapp";

  Log.e("path uri", newFile.getPath());

  Intent shareIntent = new Intent(Intent.ACTION_SEND);

  shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); // temp permission for receiving app to read this file

  shareIntent.setType(getContentResolver().getType(contentUri));   shareIntent.putExtra(Intent.EXTRA_TEXT, shareable);

  shareIntent.putExtra(Intent.EXTRA_STREAM, contentUri);

  startActivity(Intent.createChooser(shareIntent, "Choose an app"));

} catch (Exception e) {

  e.printStackTrace();

}

For Multiple image share We should use the putParcelableArrayListExtra() for stream.

try {

          final SparseBooleanArray selected = mAdapter

                  .getSelectedIds();

          ArrayList<String> shareFiles = new ArrayList<>();

          for (int i = 0; i < selected.size(); i++) {

              Log.e("selected paths " + i, imageList.get(selected.keyAt(i)).getThumbnail());

              shareFiles.add(imageList.get(selected.keyAt(i)).getThumbnail());

          }

          ArrayList<Uri> filesUri = new ArrayList<>();

          for (int i = 0; i < selected.size(); i++) {

              filesUri.add(FileProvider.getUriForFile(context,

                      "com.whatsapp.statusdownloader.fileprovider", new File(shareFiles.get(i))));

          }

          Intent shareIntent = new Intent(Intent.ACTION_SEND_MULTIPLE);

          shareIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

          shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); // temp permission for receiving app to read this file

          shareIntent.setType(context.getContentResolver().getType(filesUri.get(0)));//DataAnd  contentUri,

          shareIntent.putExtra(Intent.EXTRA_TEXT, "Using statuses and file downloader for whatsapp");

          shareIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, filesUri);

          startActivity(Intent.createChooser(shareIntent, "Choose an app"));

      } catch (Exception e){

          e.printStackTrace();

      }