File provider error to receive pdf from another program - pdf

Question

`# Dears, this class works well to receive PDF files from another application on below Android 6, but it gives an error for Android uper 6
` #RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public int ExtractImage(Intent intent) {
try {
String filepath = null;
if (intent != null) {
String action = intent.getAction();
String type = intent.getType();
if (Intent.ACTION_VIEW.equals(action) && type.endsWith("pdf")) {
Uri file_uri = intent.getData();
if (file_uri != null) {
filepath = file_uri.getPath();
}
} else if (Intent.ACTION_SEND.equals(action) && type.endsWith("pdf")) {
Uri uri = intent.getParcelableExtra(Intent.EXTRA_STREAM);
if (uri != null) {
filepath = uri.getPath();
}
}
}
File file = new File(filepath);
PdfRenderer renderer = null;
Bitmap bm;
try {
renderer = new PdfRenderer(ParcelFileDescriptor.open(file,
ParcelFileDescriptor.MODE_READ_ONLY));
} catch (Exception e) {
}
assert renderer != null;
final int pageCount = renderer.getPageCount();
totalPage = pageCount;
for (int i = 0; i < pageCount; i++) {
PdfRenderer.Page page = renderer.openPage(i);
// Create a bitmap and canvas to draw the page into
int width = 570;
int zarib = 570 / (page.getWidth() + 1);
int height = (page.getHeight() * 2) + 1;
heightArray.add(i, height);
// Create a bitmap and canvas to draw the page into
bm = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
// Create canvas to draw into the bitmap
Canvas c = new Canvas(bm);
// Fill the bitmap with a white background
Paint whiteBgnd = new Paint();
whiteBgnd.setColor(Color.WHITE);
whiteBgnd.setStyle(Paint.Style.FILL);
c.drawRect(0, 0, width, height, whiteBgnd);
// paint the page into the canvas
page.render(bm, null, null, PdfRenderer.Page.RENDER_MODE_FOR_PRINT);
// Save the bitmap
OutputStream outStream = null;
try {
outStream = new
FileOutputStream(Environment.getExternalStorageDirectory().getAbsolutePath()
+ "/printDo2ta" + i + ".png");
} catch (Exception e) {
e.printStackTrace();
}
bm.compress(Bitmap.CompressFormat.PNG, 80, outStream);
try {
outStream.close();
} catch (Exception e) {
e.printStackTrace();
}
page.close();
}
} catch (Exception e) {
runOnUiThread(() -> Toast.makeText(getBaseContext(),
"خطا در پردازش فایل: " + e.getMessage(),
Toast.LENGTH_SHORT).show());
}
return totalPage;
}
I inserted this code in AndroidManifest.xml
`<provider
android:name="androidx.core.content.FileProvider"
android:authorities="ir.myproject.test.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/provider_paths" />
</provider>`
`
And I made the class provider_paths.xml
`<?xml version="1.0" encoding="utf-8"?>
<paths>
<external-path name="external_files" path="."/>
</paths>`
I don't know what else I need to change to make it work on Android 8
please help me`