shikto1

public class SingletonActivity extends Activity {
      @Override
    protected void onCreate(Bundle savedInstanceState) {
        //...
        SingletonManager.getInstance(this);
    }
}

shikto1

public class GoodActivity extends Activity implements LocationListener {

    private LocationManager mLocManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_leaks);
        mLocManager = (LocationManager) getSystemService(LOCATION_SERVICE);

shikto1

public class LeaksActivity extends Activity implements LocationListener {

    private LocationManager mLocManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_leaks);
        mLocManager = (LocationManager) getSystemService(LOCATION_SERVICE);

shikto1

public class MoviesActivity extends Activity {

    private TextView mNoOfMoviesThisWeek;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_movies_activity);
        mNoOfMoviesThisWeek = (TextView) findViewById(R.id.no_of_movies_text_view);

shikto1

  
  new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            // do abc long 5s or so
        }
    }, 10000); // run "do abc" after 10s. It same as timer, thread...

shikto1

public class AsyncActivity extends Activity {

    TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_async);
        textView = (TextView) findViewById(R.id.textView);

shikto1

public class GoodActivity extends Activity {

    TextView textView;
    AsyncTask task;

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

shikto1

import 'package:flutter/material.dart';
import 'package:oyobill/base/BaseState.dart';
import 'package:oyobill/data/network/APIs.dart';
import 'package:oyobill/data/network/api_response/TopupHistoryResponse.dart';
import 'package:oyobill/ui/history/topup_history/topup_history_contract.dart';
import 'package:intl/intl.dart';

class TopupHistory extends StatefulWidget {

  static const route = "/topup-history";

shikto1

import 'package:blockpatter/base/BaseState.dart';
import 'package:blockpatter/ui/forgot_pass/forgotpass_page.dart';
import 'package:blockpatter/ui/home/home_page.dart';
import 'package:blockpatter/ui/login/login_contract.dart';
import 'package:blockpatter/ui/registration/registeration_page.dart';
import 'package:flutter/material.dart';
import 'package:blockpatter/values/styles.dart';

class LoginPage extends StatefulWidget {
  static const route = "/login-page";

shikto1

    private fun manageCamera() {

        permissionUtils.checkPermission(
            getContext(),
            Manifest.permission.CAMERA,
            object : PermissionUtils.OnPermissionAskListener {

                override fun onNeedPermission() {
                    ActivityCompat.requestPermissions(