GursheeshSingh

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";

    private static final int PERMISSION_REQUEST_READ_EXTERNAL_STORAGE = 1;

    private Button openStorage;

    private SharedPreferences sharedPreferences;

GursheeshSingh

//If User was asked permission before and denied
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);

alertDialogBuilder.setTitle("Permission needed");
alertDialogBuilder.setMessage("Storage permission needed for accessing photos");
alertDialogBuilder.setPositiveButton("Open Setting", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialogInterface, int i) {
        Intent intent = new Intent();
        intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);

GursheeshSingh

public class DatabaseLogger implements ILogger {
    @Override
    public void log(String message) {
        //Log to Database here
    }
}

GursheeshSingh

public class InstanceFactory {
    public static ILogger initLogger(){
        return new FileLogger();
    }
}

GursheeshSingh

public class FirebaseLogin implements ILoginAuthentication {

    private OnLoginCompleted listener;

    public FirebaseLogin(OnLoginCompleted listener){
        this.listener = listener;
    }

    @Override
    public void login(String username, String password) {

GursheeshSingh

class MySlider extends StatefulWidget {
  @override
  _MySliderState createState() => _MySliderState();
}

class _MySliderState extends State<MySlider> {
  double _value = 0.5;

  @override
  Widget build(BuildContext context) {

GursheeshSingh

  @override
  Widget build(BuildContext context) {
    return SliderTheme(
      data: SliderTheme.of(context).copyWith(
        thumbShape: RoundSliderThumbShape(enabledThumbRadius: 20)
      ),
      child: Slider(
        value: _value,
        onChanged: (newValue){
          setState(() {

GursheeshSingh

var kCoolPurple = Color(0xFF5D37B9);
var kCoolGray = Colors.grey.shade200;

GursheeshSingh

  @override
  Widget build(BuildContext context) {
    return SliderTheme(
      data: SliderTheme.of(context).copyWith(
        activeTrackColor: kCoolPurple,
        inactiveTrackColor: kCoolGray,
        thumbColor: kCoolPurple,
        overlayShape: RoundSliderOverlayShape(overlayRadius: 1),
      ),
      child: Slider(

GursheeshSingh

import 'package:flutter/material.dart';

class CircleThumbShape extends SliderComponentShape {

  final double thumbRadius;

  const CircleThumbShape({
    this.thumbRadius = 6.0,
  });