How to use support FileProvider for sharing content to other apps?

Question

I\'m looking for a way to correctly share (not OPEN) an internal file with external application using Android Support library\'s FileProvider.

Following the example

Answer 1

Since as Phil says in his comment on the original question, this is unique and there is no other info on SO on in google, I thought I should also share my results:

In my app FileProvider worked out of the box to share files using the share intent. There was no special configuration or code necessary, beyond that to setup the FileProvider. In my manifest.xml I placed:

    <provider
        android:name="android.support.v4.content.FileProvider"
        android:authorities="com.my.apps.package.files"
        android:exported="false"
        android:grantUriPermissions="true" >
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/my_paths" />
    </provider>

In my_paths.xml I have:

<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <files-path name="files" path="." />
</paths>

In my code I have:

    Intent shareIntent = new Intent();
    shareIntent.setAction(Intent.ACTION_SEND);
    shareIntent.setType("application/xml");

    Uri uri = FileProvider.getUriForFile(this, "com.my.apps.package.files", fileToShare);
    shareIntent.putExtra(Intent.EXTRA_STREAM, uri);

    startActivity(Intent.createChooser(shareIntent, getResources().getText(R.string.share_file)));

And I am able to share my files store in my apps private storage with apps such as Gmail and google drive without any trouble.

Answer 2

If you get an image from camera none of these solutions work for Android 4.4. In this case it's better to check versions.

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (intent.resolveActivity(getContext().getPackageManager()) != null) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
        uri = Uri.fromFile(file);
    } else {
        uri = FileProvider.getUriForFile(getContext(), getContext().getPackageName() + ".provider", file);
    }
    intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
    startActivityForResult(intent, CAMERA_REQUEST);
}

Answer 3

just to improve answer given above: if you are getting NullPointerEx:

you can also use getApplicationContext() without context

                List<ResolveInfo> resInfoList = getPackageManager().queryIntentActivities(takePictureIntent, PackageManager.MATCH_DEFAULT_ONLY);
                for (ResolveInfo resolveInfo : resInfoList) {
                    String packageName = resolveInfo.activityInfo.packageName;
                    grantUriPermission(packageName, photoURI, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
                }