open a pdf file programmatically

Question

I am working on pdf. I am trying to open a pdf file from my application using the code below. But I failed to open.

private void openPdf() {

        File fi         


        

Answer 1

for android 9 and 10 you should use this code

1-create one class

public class GenericFileProvider extends FileProvider {

}

2-in res directory create one directory to name of xml and create one file to name of provider_paths.xml and add this code

3-in manifests in application add this code

4-you should get Permission Manifest.permission.READ_EXTERNAL_STORAGE

5-and add this codes

String fileName="yourfile.pdf";

File file = new File(Environment.getExternalStorageDirectory()+"/Android/data/ir.tdaapp.paymanyar/files/File",fileName);

String extension = MimeTypeMap.getFileExtensionFromUrl(Uri.fromFile(file).toString());

String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_NEW_TASK);

Uri uri = FileProvider.getUriForFile(getContext(), getActivity().getApplicationContext().getPackageName() + ".provider", file);

intent.setDataAndType(uri, mimeType);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

startActivity(Intent.createChooser(intent, "choseFile"));

6-I suggest you add this code to the application in manifests

android:requestLegacyExternalStorage="true"