Android 11 EPERM (Operation not permitted) - android-11

Question

Hello
I try copy folder assets to external directory but getting permition error from android 11 (Api30).
But Its working well when copy or create folder to internal storage.
please help how to fix.
This is error code;
/com.strong.choosedirectory E/Tag: /storage/0E1A-2619/CTV_USB_EU/channel_list_sub.bin: open failed: EPERM (Operation not permitted)
This is main_activity code;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import android.Manifest;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.res.AssetManager;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.krunal.choosedirectory.R;
import com.krunal.choosedirectory.databinding.ActivityMainBinding;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import pub.devrel.easypermissions.EasyPermissions;
import static com.krunal.choosedirectory.ClsGlobal.ClsGlobal.SELECT_DIRECTORY;
import static com.krunal.choosedirectory.ClsGlobal.ClsGlobal.requestPermission;
public class MainActivity extends AppCompatActivity {
private ActivityMainBinding binding;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityMainBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
requestPermission(MainActivity.this);
binding.btnSelectDirectory.setOnClickListener(v -> {
Intent i = new Intent(this, SelectDirectoryActivity.class);
startActivityForResult(i, SELECT_DIRECTORY);
});
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions,
#NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
// Forward results to EasyPermissions
EasyPermissions.onRequestPermissionsResult(requestCode,
permissions, grantResults, this);
}
#Override
public void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
if (requestCode == SELECT_DIRECTORY && data != null) {
if (data != null) {
new File(data.getStringExtra("SelectedPath") + "/CTV_USB_EU/").mkdirs();
/////
requestPermission(MainActivity.this);
/////
binding.tvDrSelected.setText(data.getStringExtra("SelectedPath"));
// out = new FileOutputStream("".toString() + (data.getStringExtra("SelectedPath")) + fileName);
}
}
super.onActivityResult(requestCode, resultCode, data);
Button buton = (Button) findViewById(R.id.buton);
buton.setOnClickListener(new View.OnClickListener() { //butona tıklandığı an yapılacaklar
#Override
public void onClick(View view) {
new AlertDialog.Builder(MainActivity.this)
.setTitle("test tiklama calisti")
.setMessage("Seçilen USB Aygıtı " + (data.getStringExtra("SelectedPath")))
.setPositiveButton("Tamam", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Tamam butonuna basılınca yapılacak olanlar
AssetManager assetManager = getAssets();
String[] files = null;
try {
files = assetManager.list("Files");
} catch (Exception e) {
Log.e("Tag", e.getMessage());
}
for (String fileName : files) {
System.out.println("Files=>" + fileName);
InputStream in = null;
OutputStream out = null;
try {
in = assetManager.open("Files/" + fileName);
out = new FileOutputStream("".toString() + "/" + (data.getStringExtra("SelectedPath")) + "/CTV_USB_EU/" + fileName);
copyFiles(in, out);
in.close();
in = null;
out.flush();
out.close();
out = null;
} catch (Exception e) {
Log.e("Tag", e.getMessage());
}
}
// copyAssets();
}
})
.setNegativeButton("İptal", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// İptal butonuna basınca yapılacak olanlar
}
})
.show();
String isim;
isim = ("".toString() + (data.getStringExtra("SelectedPath")));
System.out.println((isim));
}
});
}
private void copyFiles (InputStream in, OutputStream out) throws IOException {
byte[] buffer = new byte[1024];
int read;
while ((read = in.read(buffer)) != -1) {
out.write(buffer, 0, read);
}
}
public void mkDir (String args[])
{
// create an abstract pathname (File object)
File f = new File(toString(), "File");
// check if the directory can be created
// using the abstract path name
if (f.mkdir()) {
Log.d("BG", "Mkdir return: " );
// display that the directory is created
// as the function returned true
System.out.println("Directory is created");
} else {
// display that the directory cannot be created
// as the function returned false
System.out.println("Directory cannot be created");
}
}
}
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