Request Permissions on the Runtime in Android

 

package com.deepesh.mediaapp;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // asks a permission to the user.
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE)!= PackageManager.PERMISSION_GRANTED){
            String[] permissions ={Manifest.permission.READ_EXTERNAL_STORAGE};
            ActivityCompat.requestPermissions(this,permissions,111);
        }else{
            loadSongs();
        }

    }

    // Called when a request permission is denied or accepted
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode==111 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
            loadSongs();
        }
    }

    private void loadSongs() {
    }


}