Error with onRequestPermission / onActivityResult Android Studio

I have a error at my application in Android Studio. Please check my code! btnChoose doesn't work...
When I press the button, ask for permission to access the phone gallery, but don t enter the phone gallery to choose the image. Please help me! Thanks!

Main java code - MainFragment:

package com.example.licenta23;
import android.Manifest;
import android.app.AppComponentFactory;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.app.ActivityCompat;
import androidx.fragment.app.Fragment;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
public class MainFragment extends Fragment {
private static final String[] CAROSERIE = new String[] {
"Cabrio", "Berlina", "Coupe", "Pick-up", "Hatchback", "Break", "Off-road", "Minibus", "Monovolum", "SUV"
};
private static final String[] COMBUSTIBIL = new String[] {
"Benzina", "Diesel", "GPL", "Electric", "Hibrid"
};
private static final String[] CULOARE = new String[] {
"Alb", "Negru", "Gri", "Argintiu", "Albastru", "Rosu", "Verde", "Auriu", "Galben", "Portocaliu", "Maro", "Bej", "Alta culoare"
};
private List<MarcaItem> marcaList;
EditText actv1, edtModel, actv2, actv3, actv4, edtFabricatie, edtPret;
Button btnChoose, btnAdd, btnList;
ImageView imageView3;
final int REQUEST_CODE_GALLERY = 999;
public static SQLiteHelper sqLiteHelper;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_main, container, false);
fillMarcaList();
AutoCompleteTextView editText = view.findViewById(R.id.actv1);
AutoCompleteMarcaAdapter adapter = new AutoCompleteMarcaAdapter(getActivity(), marcaList);
editText.setAdapter(adapter);
AutoCompleteTextView editText2 = view.findViewById(R.id.actv2);
ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, CAROSERIE);
editText2.setAdapter(adapter2);
AutoCompleteTextView editText3 = view.findViewById(R.id.actv3);
ArrayAdapter<String> adapter3 = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, COMBUSTIBIL);
editText3.setAdapter(adapter3);
AutoCompleteTextView editText4 = view.findViewById(R.id.actv4);
ArrayAdapter<String> adapter4 = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, CULOARE);
editText4.setAdapter(adapter4);
init(view);
sqLiteHelper = new SQLiteHelper(getActivity(),"CarDB.sqlite", null, 1);
sqLiteHelper.queryData("CREATE TABLE IF NOT EXISTS CAR (Id INTEGER PRIMARY KEY AUTOINCREMENT, alegemarca VARCHAR, model VARCHAR, caroserie VARCHAR, combustibil VARCHAR, culoare VARCHAR, fabricatie VARCHAR, pret VARCHAR, image BLOG)");
btnChoose.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ActivityCompat.requestPermissions(
getActivity(),
new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
REQUEST_CODE_GALLERY
);
}
});
return view;
}
private void fillMarcaList() {
marcaList = new ArrayList<>();
marcaList.add(new MarcaItem("Alfa Romeo", R.drawable.alfa_romeo));
marcaList.add(new MarcaItem("Audi", R.drawable.audi));
marcaList.add(new MarcaItem("Bmw", R.drawable.bmw));
marcaList.add(new MarcaItem("Chevrolet", R.drawable.chevrole));
marcaList.add(new MarcaItem("Citroen", R.drawable.citroen));
marcaList.add(new MarcaItem("Dacia", R.drawable.dacia));
marcaList.add(new MarcaItem("Dodge", R.drawable.dodge));
marcaList.add(new MarcaItem("Fiat", R.drawable.fiat));
marcaList.add(new MarcaItem("Ford", R.drawable.ford));
marcaList.add(new MarcaItem("Honda", R.drawable.honda));
marcaList.add(new MarcaItem("Hyundai", R.drawable.hyundai));
marcaList.add(new MarcaItem("Jaguar", R.drawable.jaguar));
marcaList.add(new MarcaItem("Jeep", R.drawable.jeep));
marcaList.add(new MarcaItem("Kia", R.drawable.kia));
marcaList.add(new MarcaItem("Land Rover", R.drawable.landrover));
marcaList.add(new MarcaItem("Lexus", R.drawable.lexus));
marcaList.add(new MarcaItem("Mazda", R.drawable.mazda));
marcaList.add(new MarcaItem("Mercedes-Benz", R.drawable.mercedes));
marcaList.add(new MarcaItem("Mini Cooper", R.drawable.minicooper));
marcaList.add(new MarcaItem("Mitsubishi", R.drawable.mitsubishi));
marcaList.add(new MarcaItem("Nissan", R.drawable.nissan));
marcaList.add(new MarcaItem("Opel", R.drawable.opel));
marcaList.add(new MarcaItem("Peugeot", R.drawable.peugeot));
marcaList.add(new MarcaItem("Pontiac", R.drawable.pontiac));
marcaList.add(new MarcaItem("Porche", R.drawable.porche));
marcaList.add(new MarcaItem("Renault", R.drawable.renault));
marcaList.add(new MarcaItem("Rover", R.drawable.rover));
marcaList.add(new MarcaItem("Seat", R.drawable.seat));
marcaList.add(new MarcaItem("Skoda", R.drawable.skoda));
marcaList.add(new MarcaItem("Smart", R.drawable.smart));
marcaList.add(new MarcaItem("Subaru", R.drawable.subaru));
marcaList.add(new MarcaItem("Suzuki", R.drawable.suzuki));
marcaList.add(new MarcaItem("Toyota", R.drawable.toyota));
marcaList.add(new MarcaItem("Voltwagen", R.drawable.voltwagen));
marcaList.add(new MarcaItem("Volvo", R.drawable.volvo));
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if(requestCode == REQUEST_CODE_GALLERY){
if(grantResults.length >0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, REQUEST_CODE_GALLERY);
}
else {
Toast.makeText(getActivity().getApplicationContext(), "You don't have permission to access file location!", Toast.LENGTH_SHORT).show();
}
return;
}
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode == REQUEST_CODE_GALLERY && resultCode == getActivity().RESULT_OK && data != null){
Uri uri = data.getData();
try {
InputStream inputStream = getActivity().getApplicationContext().getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
imageView3.setImageBitmap(bitmap);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
super.onActivityResult(requestCode, resultCode, data);
}
private void init(View view) {
actv1 = view.findViewById(R.id.actv1);
edtModel = view.findViewById(R.id.edtModel);
actv2 = view.findViewById(R.id.actv2);
actv3 = view.findViewById(R.id.actv3);
actv4 = view.findViewById(R.id.actv4);
edtFabricatie = view.findViewById(R.id.edtFabricatie);
edtPret = view.findViewById(R.id.edtPret);
btnChoose = view.findViewById(R.id.btnChoose);
btnAdd = view.findViewById(R.id.btnAdd);
btnList = view.findViewById(R.id.btnList);
imageView3 = view.findViewById(R.id.imageView3);
}

}

Debugger doeesn t give me any error...

UPDATE FOR ZAIN

btnChoose.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String[] permissions =  new String[]{Manifest.permission.READ_EXTERNAL_STORAGE};
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M)
return;
for (String permission : permissions) {
if (ContextCompat.checkSelfPermission(getActivity(), permission) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(permissions, REQUEST_CODE_GALLERY); // triggers onRequestPermissionsResult() each time a permission is granted in 'permissions'
} else {
Toast.makeText(getActivity(), "Permission Already Granted", Toast.LENGTH_SHORT).show();
}
}
}
});

My code it s ok ?

I navigated through your code, seems nothing wrong, and as there are no raised exceptions, then no problem getting the needed permission programmatically; So, please try to request the permission from the manifest file as well, it won't work for just providing it programmatically alone

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

Update:

Try to replace below snippet to manually request permission.

So remove below:

    btnChoose.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ActivityCompat.requestPermissions(
getActivity(),
new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
REQUEST_CODE_GALLERY
);
}
});

and Replace it With:

    btnChoose.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String[] permissions =  new String[]{Manifest.permission.READ_EXTERNAL_STORAGE};
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M)
return;
for (String permission : permissions) {
if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(permissions, code); // triggers onRequestPermissionsResult() each time a permission is granted in 'permissions'
} else {
Toast.makeText(this, "Permission Already Granted", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, REQUEST_CODE_GALLERY);
}
}
}
});

everything seems fine except you are requesting permission from fragment and declare call back also in fragment.

But when user prompt for permission and allow/deny that permission, callback first goes to your activity context not your fragment context.

So first of all you have to declare onRequestPermissionsResult() in your activity and from activity you have to pass it to you fragment, and then after your fragment's onRequestPermissionsResult() will be on queue for work.

Follow the same process for onActivityResult() also.