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MOBILE PROGRAMMING
Add Dependencies The first thing is to add the plugins in the pubspec.yaml file. We need 4 plugins for this demo. http package – to get the Feed webfeed – to parse the RSS/Atom Feed cached_network_image – to cache the images url_launcher – to open the feed url in a browser Your pubspec.yaml file should look likethis.
FLUTTER DATATABLE + MYSQL Flutter DataTable + MySQL. In this demo we will create a flutter app that communicates with the Server and create a table, insert records, update records, fetch all records and delete records. The Data from the Server will be displayed in a DataTable. WWW.CODERZHEAVEN.COM package pack.coderzheaven; /** * Encodes and decodes to and from Base64 notation. * Homepage: http://iharder.net/base64. Example: * * String encoded = Base64.encodeDIVISIBLE SUM PAIRS
Divisible Sum Pairs You are given an array of integers, , and a positive integer, . Find and print the number of pairs where and + isdivisible by .
BREAKING THE RECORDS Breaking the Records Maria plays games of college basketball in a season. Because she wants to go pro, she tracks her points scored per game sequentially in an array defined as . HOW TO PASS AN ARRAYLIST VALUE FROM ONE ACTIVITY TO http://coderzheaven.com – Heaven of all working codes. How to pass an arraylist value from one activity to another in android? This simple example shows how to pass COMMENTS ON: HOW TO GET THE ANDROID SDK VERSION? HOW TO Comments on: How to get the ANDROID SDK Version? How to get your Phone's IP Address in ANDROID? Also how to get your phone number fromthe phone?
ANDROID – MOBILE PROGRAMMING In this article we are gonna talk about how to use YouTube API’s and play YouTube videos in Flutter. Watch Video Tutorial Add Dependencies Open pubspec.yaml file in your Flutter project and add below dependencies Now, Let’s create two screens Home Screen Video Player Screen In the HomeScreen we will show the list of videos.DOWNLOAD FILE
Actually this is fairly simple. This simple code does this. Here is the complete program that shows how to download a PDF File and open it in Android using an installed PDF Reader. COMMENTS ON: SIMPLE STRING CONCATENATION EXAMPLE IN JAVA https://www.youtube.com/channel/UC5lbdURzjB0irr-FTbjWN1A/ Comments on: Simple String Concatenation Example in JAVAMOBILE PROGRAMMING
Add Dependencies The first thing is to add the plugins in the pubspec.yaml file. We need 4 plugins for this demo. http package – to get the Feed webfeed – to parse the RSS/Atom Feed cached_network_image – to cache the images url_launcher – to open the feed url in a browser Your pubspec.yaml file should look likethis.
FLUTTER DATATABLE + MYSQL Flutter DataTable + MySQL. In this demo we will create a flutter app that communicates with the Server and create a table, insert records, update records, fetch all records and delete records. The Data from the Server will be displayed in a DataTable. WWW.CODERZHEAVEN.COM package pack.coderzheaven; /** * Encodes and decodes to and from Base64 notation. * Homepage: http://iharder.net/base64. Example: * * String encoded = Base64.encodeDIVISIBLE SUM PAIRS
Divisible Sum Pairs You are given an array of integers, , and a positive integer, . Find and print the number of pairs where and + isdivisible by .
BREAKING THE RECORDS Breaking the Records Maria plays games of college basketball in a season. Because she wants to go pro, she tracks her points scored per game sequentially in an array defined as . HOW TO PASS AN ARRAYLIST VALUE FROM ONE ACTIVITY TO http://coderzheaven.com – Heaven of all working codes. How to pass an arraylist value from one activity to another in android? This simple example shows how to pass COMMENTS ON: HOW TO GET THE ANDROID SDK VERSION? HOW TO Comments on: How to get the ANDROID SDK Version? How to get your Phone's IP Address in ANDROID? Also how to get your phone number fromthe phone?
ANDROID – MOBILE PROGRAMMING In this article we are gonna talk about how to use YouTube API’s and play YouTube videos in Flutter. Watch Video Tutorial Add Dependencies Open pubspec.yaml file in your Flutter project and add below dependencies Now, Let’s create two screens Home Screen Video Player Screen In the HomeScreen we will show the list of videos.DOWNLOAD FILE
Actually this is fairly simple. This simple code does this. Here is the complete program that shows how to download a PDF File and open it in Android using an installed PDF Reader. COMMENTS ON: SIMPLE STRING CONCATENATION EXAMPLE IN JAVA https://www.youtube.com/channel/UC5lbdURzjB0irr-FTbjWN1A/ Comments on: Simple String Concatenation Example in JAVAMOBILE PROGRAMMING
Add Dependencies The first thing is to add the plugins in the pubspec.yaml file. We need 4 plugins for this demo. http package – to get the Feed webfeed – to parse the RSS/Atom Feed cached_network_image – to cache the images url_launcher – to open the feed url in a browser Your pubspec.yaml file should look likethis.
LOCAL NOTIFICATIONS IN FLUTTER Add Dependencies. Open your pubspec.yaml file and add the below in the dependencies. flutter_local_notifications: ^1.4.4+1. rxdart: ^0.24.1. path_provider: ^1.6.11. http: ^0.12.1. For the initial Android and iOS setup, please follow this link. Once you have done the FLUTTER DATATABLE + MYSQL Flutter DataTable + MySQL. In this demo we will create a flutter app that communicates with the Server and create a table, insert records, update records, fetch all records and delete records. The Data from the Server will be displayed in a DataTable.FLUTTER TUTORIALS
Colums represent the header of the DataTable. Rows should be the same number as columns or empty. We are going to display a list of users. Create a new file named “user.dart” and create a class ‘User’. We will have two member variables ‘firstName’ and ‘lastName’. Also a constructor and a function that returns a list of users. COMMENTS ON: HOW TO SIMULATE AN INCOMING CALL TO AN SMS received by the intent using a toast. How to simulate an SMS to your emulator is explained in here and another method here No XML filefor layout is used
COMMENTS ON:
https://www.youtube.com/channel/UC5lbdURzjB0irr-FTbjWN1A/ Comments on: COMMENTS ON: HOW TO USE SHAPES IN ANDROID? A SIMPLE EXAMPLE. https://www.youtube.com/channel/UC5lbdURzjB0irr-FTbjWN1A/ Comments on: How to use shapes in android? A simple example. COMMENTS ON: HOW TO DOWNLOAD AN IMAGE IN ANDROIDImage From URL in
Androidhttp://www.coderzheaven.com/2011/07/07/how-to-download-an-image-in-android-programatically/ Share this:TwitterFacebookLike this:LikeBe the COMMENTS ON: HOW TO GET THE NUMBER OF TAPS IN CORONA SDK? https://www.youtube.com/channel/UC5lbdURzjB0irr-FTbjWN1A/ Comments on: How to get the number of Taps in Corona SDK? COMMENTS ON: HOW TO CHECK IF FILE EXISTS IN C SHARP/C# https://www.youtube.com/channel/UC5lbdURzjB0irr-FTbjWN1A/ Comments on: How to Check if File Exists in C Sharp/C# ?MOBILE PROGRAMMING
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EASILY PARSE JSON, CREATE JSON MODEL CLASSES, SHOW IN LISTVIEW. By James | March 25,2020
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Facebook Twitter Share Hi, This article might be an important one for people who are new into Flutter and others too. I am going to explain about a simple thing here. How do you parse complex JSON in Flutter into Dart classes. Of-course there are libraries in Dart to do that. But that requires an extra bit of effort to identify… Read More » Facebook Twitter ShareJames
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* Car tracking devices EASY STATEMANAGEMENT IN FLUTTER USING PROVIDERS, MULTIPROVIDERS, CHANGENOTIFIERS AND CONSUMERS By James | March 15,2020
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Facebook Twitter Share With Providers and MultiProviders we can do easy StateManagement in Flutter. State Management in Flutter Add Dependencies First Go to your pubspec.yaml file add the below dependency, I would recommend to add the latest dependency version, at this moment it is 4.0.4 provider: ^4.0.4 The Providers will have Change Notifiers Consumers The Basic flow to update a state in… Read More » Facebook Twitter ShareJames
SOCKET PROGRAMMING IN FLUTTER, BUILD CHAT APPS IN FLUTTER By James | February 16,2020
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Facebook Twitter Share Today’s video will let you know how to create sockets in Flutter to make bi-directional communication possible. First we will go with the ‘IOWebSocketChannel‘ class. Watch Video Tutorial You can read about IOWebSocketChannel by following this link. Let’s use the Official Sample first. Create a new file SocketDemo.dart and add the below code into it. This will create… Read More » Facebook Twitter ShareJames
WRAP WIDGET & CHIP WIDGETS IN FLUTTER By James | January 30,2020
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Facebook Twitter Share Wrap widget is such a useful widget in many circumstances. Watch Video Tutorial First Let’s create a Chip Widget. The above code creates a Chip widget and you can add it to the UI as you want. If we add it inside a row…then this happens… But we want the chips that overflow to be wrapped to the… Read More » Facebook Twitter ShareJames
FIREBASE PUSH NOTIFICATIONS IN FLUTTER By James | January 14,2020
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Facebook Twitter Share This article will show how to send push notifications in Flutter using Firebase. We will start with Android. Add Dependency For sending push notifications we use a plugin called firebase_messaging… https://pub.dev/packages/firebase_messaging Open your pubspec.yaml file and add this dependency Firebase Account Make sure you have a firebase account before proceeding. Once you have created your account, proceed by… Read More » Facebook Twitter ShareJames
USING EXTENSION-METHODS IN FLUTTER By James | January 6,2020
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Facebook Twitter Share This article will help you to understand what are extension methods and what is the use of extension methods. Extension functions can be added to classes which are already compiled. So if you want to extend a library which is already added in your app, you can make use of Extension methods. Watch Video Tutorial Let’s take a… Read More » Facebook Twitter ShareJames
APP THEMING IN FLUTTER – DARK MODE/ LIGHT MODE By James | December 31,2019
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Facebook Twitter Share In this article, we will see how to theme our apps in Flutter. As you know Google and Apple has released Dark Mode and Light Modes in their latest OS releases in Android 10 and iOS 13. So we have to make sure that our apps works perfectly when the user switch modes in their devices. Watch Video… Read More » Facebook Twitter ShareJames
FLATLIST, FILTERING IN FLATLIST, SPREAD OPERATORS IN REACT-NATIVE By James | December 28,2019
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Facebook Twitter Share In Today’s article, we are going to see how to work with FlatLists in React Native and We will add a search bar as a header to the FlatList and filter the list, Also we will see what are spread operators and how to work with them. Note: Make sure that you install react-native-elements package. You can follow… Read More » Facebook Twitter ShareJames
PROPER WAY TO HANDLE EXCEPTIONS IN FLUTTER By James | December 23,2019
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Facebook Twitter Share Today we will see how we can properly handle errors and exceptions in Flutter. Watch Video Tutorial For this example we will be doing a service call and handle exceptions related to that. We will create a sample service here In the above example we are catching all exceptions using a simple try catch block which is not… Read More » Facebook Twitter ShareJames
DIFFERENT WAYS TO NAVIGATE AND DIFFERENT WAYS TO SEND PARAMETERS FOR NAVIGATION IN FLUTTER By James | December 17,2019
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Facebook Twitter Share Watch Video Tutorial Navigate using Push Normally if we want to navigate from one screen to another we would use Navigate.push, like in the code below And if we want to send parameters, then one of the way to do this is like below Here SecondScreen is another screen that extends StatelessWidget or StatefulWidget which as a constructor…Read More »
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PARSING RSS FEEDS IN FLUTTER By James | December 8,2019
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Facebook Twitter Share Add Dependencies The first thing is to add the plugins in the pubspec.yaml file. We need 4 plugins for this demo. http package – to get the Feed webfeed – to parse the RSS/Atom Feed cached_network_image – to cache the images url_launcher – to open the feed url in a browser Your pubspec.yaml file should look like this… Read More » Facebook Twitter ShareJames
CUSTOM BOTTOMSHEET, CUSTOM SNACKBAR IN FLUTTER USING FLUSHBOX By James | December 4,2019
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Facebook Twitter Share In this article we will see how to use a nice plugin called FlushBox in Flutter. Watch Video Tutorial First thing to do is to add dependencies. Add Dependencies Go to your pubspec.yaml file and add the below dependency. Once done that run ‘flutter packages get’ in the terminal to download the packages to be used by your… Read More Facebook Twitter ShareJames
OPEN URLS IN BROWSER, IN APP, MAKE PHONE CALLS, OPEN INSTALLED APPSIN FLUTTER
By James | November 24,2019
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Facebook Twitter Share This demo will show how can we Launch urls in a browser outside the App Launch urls in a browser inside the App Launch Installed app (eg:youtube) Make Phone Call. Watch Video Tutorial Add Dependencies To make all this work, we need the url launcher plugin. Open the pubspec.yaml file in your project and add this plugin at… Read More Facebook Twitter ShareJames
SHARE DATA OUTSIDE THE APPLICATION IN FLUTTER. By James | November 11,2019
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Facebook Twitter Share This article will show you how to share data from our application to another, just like when you hit share on an image inside your gallery. The system will ask you to select an application to share to. Watch Video Tutorial So we are going to achieve this in Flutter with the help of a plugin.… Read More » Facebook Twitter ShareJames
BAR CHARTS IN FLUTTER By James | October 31,2019
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Facebook Twitter Share Hi, In this article, we will see how to draw bar charts in flutter. Watch Video Tutorial To draw charts in flutter, we need to add a dependency. So open your pubspec.yaml file and add the below dependency below dependencies. Dependencies After that run ‘flutter packages get’ to add the package. Once the plugin is installed, import it… Read More » Facebook Twitter ShareJames
GOOGLE’S FLUTTER TUTORIAL – SAVE IMAGE AS STRING IN SQLITEDATABASE
By James | October 17,2019
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Facebook Twitter Share In this tutorial we will see how to save an image as a string in preferences. Watch more flutter videos on my youtube channel here. Watch Video Tutorial Add Dependencies First thing we have to do is to add the plugins. Open pubspec.yaml file and add the below Dependencies. So Let’s start… First we will write a Utility…Read More »
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GOOGLE’S FLUTTER TUTORIAL – SAVE IMAGE AS STRING IN LOCAL STORAGE AND RETRIEVE – PREFERENCES By James | October 15,2019
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Facebook Twitter Share In this tutorial we will see how to save an image as a string in preferences. Watch Video Tutorial Add Dependencies First thing we have to do is to add the plugins. Open pubspec.yaml file and add the below Dependencies. So Let’s start… First we will write a Utility class to save the image as a String in… Read More » Facebook Twitter ShareJames
FLUTTER DATATABLE + MYSQL By James | September 28,2019
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Facebook Twitter Share In this demo we will create a flutter app that communicates with the Server and create a table, insert records, update records, fetch all records and delete records. The Data from the Server will be displayed in a DataTable. Watch Video Tutorial Here I am using XAMPP to create a local Server. You can download XAMPP from here.… Read More » Facebook Twitter ShareJames
WORKING WITH LOW-LEVEL ISOLATE APIS IN FLUTTER By James | September 15,2019
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Facebook Twitter Share Hi In my previous video I explained about how to use Isolates at a high level. Using high-level APIs has some disadvantages though. Watch Video Tutorial Bu using Low-level APIs over the High-level compute function you can get more control over the isolates. You can pause, resume and stop the Isolates at any point of time which is… ReadMore »
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PERFORMANCE PROGRAMMING IN FLUTTER USING ISOLATES By James | September 8,2019
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Facebook Twitter Share Watch Video Tutorial As you all know Flutter is a single threaded App platform. So then How to do multithreading ?. How to execute heavy operations in one thread ?. How to run big operations without affecting the UI ?. But yes, all these can be achieved with the help of Isolates. What are Isolates? Isolates are similar… Read More » Facebook Twitter ShareJames
OFFLINE DATABASE FROM WEBSERVICE USING SQFLITE IN FLUTTER By James | August 11,2019
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Facebook Twitter Share We are going to create an Offline Database using data from a Webservice. Watch Video Tutorial We are going to use the below service for that. https://jsonplaceholder.typicode.com/photos This service has about 5000 records, we are going to parse these records and insert all the records into the Offline SQLite database. Generate JSON Models To create json models, make… Read More » Facebook Twitter ShareJames
AUTO GENERATE JSON MODELS IN FLUTTER, FILTERING A LIST AND DELAYSEARCHING
By James | July 28, 20190 Comment
Facebook Twitter Share In this article we will see how to automatically generate json models in Flutter. Add Plugins For this we need some plugins… Open the pubspec.yaml file and add these dependencies. If you want to use json annotation, you can have ‘json_annotation’ plugin as well. Below is the url that we are going to parse and create the models… ReadMore »
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GOOGLE’S FLUTTER QUICK TIPS By James | July 21, 20190 Comment
Facebook Twitter Share Here are few quick tips for flutter developers.. Watch Video Tutorial 1. Timer 2. Get Device Type 3. ToolTips 4. Fade Image Add a ‘loading.gif’ image inside a folder ‘images’ in the root of your project. We will use this image as a placeholder for the downloading image. Note: Make sure you specify the ‘images’ folder… Read More » Facebook Twitter ShareJames
EXPANDED/ MULTI-LEVEL LIST IN FLUTTER FOR ANDROID AND IOS By James | July 14, 20190 Comment
Facebook Twitter Share Here is a simple example for creating expanded list in flutter. Watch Video Tutorial We will create a new class named “Entry” which will be the data on each row of the list. Data Source Let’s create the array to be shown in the expanded list. Create Row Widget Create the List That’s it. Complete code Facebook Twitter ShareJames
CUSTOM SPLASH SCREEN IN FLUTTER FOR ANDROID AND IOS. By James | July 13, 20190 Comment
Facebook Twitter Share Lets start with iOS Watch Video Tutorial iOS Go to the flutter project folder and open the iOS folder. You will see the runner.xcodeworkspace file. Open the file in Xcode. Now if you select the root folder and select the target and go the General Tab, Here just towards the bottom you will see an option to set… Read More » Facebook Twitter ShareJames
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