fixed permission denial while sharing file with fileprovider

@@ -19,32 +19,19 @@ package net.nfet.flutter.printing;
 import android.content.Context;
 import android.content.Context;
 import android.content.Intent;
 import android.content.Intent;
 import android.content.res.Configuration;
 import android.content.res.Configuration;
-import android.graphics.Bitmap;
-import android.graphics.Matrix;
-import android.graphics.pdf.PdfRenderer;
 import android.net.Uri;
 import android.net.Uri;
-import android.os.Build;
 import android.os.Bundle;
 import android.os.Bundle;
 import android.os.CancellationSignal;
 import android.os.CancellationSignal;
-import android.os.Handler;
-import android.os.Looper;
 import android.os.ParcelFileDescriptor;
 import android.os.ParcelFileDescriptor;
 import android.print.PageRange;
 import android.print.PageRange;
 import android.print.PdfConvert;
 import android.print.PdfConvert;
 import android.print.PrintAttributes;
 import android.print.PrintAttributes;
-import android.print.PrintDocumentAdapter;
-import android.print.PrintDocumentInfo;
 import android.print.PrintJob;
 import android.print.PrintJob;
-import android.print.PrintJobInfo;
 import android.print.PrintManager;
 import android.print.PrintManager;
-import android.util.Log;
 import android.webkit.WebView;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.webkit.WebViewClient;
-
 import androidx.annotation.NonNull;
 import androidx.annotation.NonNull;
-import androidx.annotation.RequiresApi;
 import androidx.core.content.FileProvider;
 import androidx.core.content.FileProvider;
-
 import java.io.File;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.FileOutputStream;
@@ -52,6 +39,12 @@ import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStream;
 import java.nio.ByteBuffer;
 import java.nio.ByteBuffer;
 import java.util.HashMap;
 import java.util.HashMap;
+import android.content.pm.PackageManager;
+import android.content.pm.ProviderInfo;
+import android.content.pm.ResolveInfo;
+import java.util.List;
+
+
 
 
 /**
 /**
  * PrintJob
  * PrintJob
@@ -223,6 +216,12 @@ public class PrintingJob extends PrintDocumentAdapter {
             shareIntent.putExtra(Intent.EXTRA_STREAM, apkURI);
             shareIntent.putExtra(Intent.EXTRA_STREAM, apkURI);
             shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
             shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
             Intent chooserIntent = Intent.createChooser(shareIntent, null);
             Intent chooserIntent = Intent.createChooser(shareIntent, null);
+            List<ResolveInfo> resInfoList = context.getPackageManager().queryIntentActivities(chooserIntent, PackageManager.MATCH_DEFAULT_ONLY);
+
+            for (ResolveInfo resolveInfo : resInfoList) {
+                String packageName = resolveInfo.activityInfo.packageName;
+                context.grantUriPermission(packageName, apkURI, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
+            }
             context.startActivity(chooserIntent);
             context.startActivity(chooserIntent);
             shareFile.deleteOnExit();
             shareFile.deleteOnExit();
         } catch (IOException e) {
         } catch (IOException e) {