Autumn  Blick

Autumn Blick

1593251880

JSON Parsing in Android - Step by Step Implementation

JSON Structures in Android

JSON uses two types of brackets that are as follows:

  • [] – To declare the elements of Array in JSON, they’re written in square brackets.
  • {} – To create JSON objects, the elements are written in curly brackets.

JSON has the following types of structures that are:

1. JSON Objects

The elements inside the curly brackets are known as Objects.

2. JSON Array

A list of values, known as Arrays.

3. JSON Key-Value

This data is stored as a pair of keys and values. Here the keys can be a name, a number for which the values can be Seema, 98767586 etc.

Why JSON Parsing in Android over XML?

Let us see some reasons for why to choose JSON over XML:

  • It is much easier and quicker with high performance
  • It can use arrays
  • Its libraries do not depend on other libraries
  • The codes written in JSON are short, clean and easy to understand
  • It is free to open use and open-source tool
  • In JSON value retrieval is easy
  • It has a fully automated way of serializing/deserializing JavaScript.
  • It is supported by many Ajax toolkits and most of the backend technologies.

Examples of XML and JSON

Let us see the code difference of JSON and XML files:

XML Example:

<?xml version= “1.0” encoding= “” ?>
<student>
        <student>
  <name> Sia Sharma</name>
  <city> Chandigarh</city>
         </student>
        <student>
  <name>Dimple D’souza</name>
  <city> Nagpur</city>
         </student>
      <student>
  <name>Anna Jones</name>
  <city> Mumbai</city>
         </student>
  </student>

JSON Example:

{ “students”: [
{ “name”: “Sia Sharma”, “city”: “Chandigarh”},
{ “name”: “Prachi D’Souza”, “city”: “Nagpur”},
{ “name”: “Annas Jones”, “city”: “Mumbai”}
]}

I hope the difference is all clear in front of you. This is how simple JSON is and how easily it could be understood.

#android tutorials #json parsing in android #json parsing in android example #json parsing in android step by step #json parsing with android #read json file android

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JSON Parsing in Android - Step by Step Implementation
Autumn  Blick

Autumn Blick

1593251880

JSON Parsing in Android - Step by Step Implementation

JSON Structures in Android

JSON uses two types of brackets that are as follows:

  • [] – To declare the elements of Array in JSON, they’re written in square brackets.
  • {} – To create JSON objects, the elements are written in curly brackets.

JSON has the following types of structures that are:

1. JSON Objects

The elements inside the curly brackets are known as Objects.

2. JSON Array

A list of values, known as Arrays.

3. JSON Key-Value

This data is stored as a pair of keys and values. Here the keys can be a name, a number for which the values can be Seema, 98767586 etc.

Why JSON Parsing in Android over XML?

Let us see some reasons for why to choose JSON over XML:

  • It is much easier and quicker with high performance
  • It can use arrays
  • Its libraries do not depend on other libraries
  • The codes written in JSON are short, clean and easy to understand
  • It is free to open use and open-source tool
  • In JSON value retrieval is easy
  • It has a fully automated way of serializing/deserializing JavaScript.
  • It is supported by many Ajax toolkits and most of the backend technologies.

Examples of XML and JSON

Let us see the code difference of JSON and XML files:

XML Example:

<?xml version= “1.0” encoding= “” ?>
<student>
        <student>
  <name> Sia Sharma</name>
  <city> Chandigarh</city>
         </student>
        <student>
  <name>Dimple D’souza</name>
  <city> Nagpur</city>
         </student>
      <student>
  <name>Anna Jones</name>
  <city> Mumbai</city>
         </student>
  </student>

JSON Example:

{ “students”: [
{ “name”: “Sia Sharma”, “city”: “Chandigarh”},
{ “name”: “Prachi D’Souza”, “city”: “Nagpur”},
{ “name”: “Annas Jones”, “city”: “Mumbai”}
]}

I hope the difference is all clear in front of you. This is how simple JSON is and how easily it could be understood.

#android tutorials #json parsing in android #json parsing in android example #json parsing in android step by step #json parsing with android #read json file android

Autumn  Blick

Autumn Blick

1593867420

Top Android Projects with Source Code

Android Projects with Source Code – Your entry pass into the world of Android

Hello Everyone, welcome to this article, which is going to be really important to all those who’re in dilemma for their projects and the project submissions. This article is also going to help you if you’re an enthusiast looking forward to explore and enhance your Android skills. The reason is that we’re here to provide you the best ideas of Android Project with source code that you can choose as per your choice.

These project ideas are simple suggestions to help you deal with the difficulty of choosing the correct projects. In this article, we’ll see the project ideas from beginners level and later we’ll move on to intermediate to advance.

top android projects with source code

Android Projects with Source Code

Before working on real-time projects, it is recommended to create a sample hello world project in android studio and get a flavor of project creation as well as execution: Create your first android project

Android Projects for beginners

1. Calculator

build a simple calculator app in android studio source code

Android Project: A calculator will be an easy application if you have just learned Android and coding for Java. This Application will simply take the input values and the operation to be performed from the users. After taking the input it’ll return the results to them on the screen. This is a really easy application and doesn’t need use of any particular package.

To make a calculator you’d need Android IDE, Kotlin/Java for coding, and for layout of your application, you’d need XML or JSON. For this, coding would be the same as that in any language, but in the form of an application. Not to forget creating a calculator initially will increase your logical thinking.

Once the user installs the calculator, they’re ready to use it even without the internet. They’ll enter the values, and the application will show them the value after performing the given operations on the entered operands.

Source Code: Simple Calculator Project

2. A Reminder App

Android Project: This is a good project for beginners. A Reminder App can help you set reminders for different events that you have throughout the day. It’ll help you stay updated with all your tasks for the day. It can be useful for all those who are not so good at organizing their plans and forget easily. This would be a simple application just whose task would be just to remind you of something at a particular time.

To make a Reminder App you need to code in Kotlin/Java and design the layout using XML or JSON. For the functionality of the app, you’d need to make use of AlarmManager Class and Notifications in Android.

In this, the user would be able to set reminders and time in the application. Users can schedule reminders that would remind them to drink water again and again throughout the day. Or to remind them of their medications.

3. Quiz Application

Android Project: Another beginner’s level project Idea can be a Quiz Application in android. Here you can provide the users with Quiz on various general knowledge topics. These practices will ensure that you’re able to set the layouts properly and slowly increase your pace of learning the Android application development. In this you’ll learn to use various Layout components at the same time understanding them better.

To make a quiz application you’ll need to code in Java and set layouts using xml or java whichever you prefer. You can also use JSON for the layouts whichever preferable.

In the app, questions would be asked and answers would be shown as multiple choices. The user selects the answer and gets shown on the screen if the answers are correct. In the end the final marks would be shown to the users.

4. Simple Tic-Tac-Toe

android project tic tac toe game app

Android Project: Tic-Tac-Toe is a nice game, I guess most of you all are well aware of it. This will be a game for two players. In this android game, users would be putting X and O in the given 9 parts of a box one by one. The first player to arrange X or O in an adjacent line of three wins.

To build this game, you’d need Java and XML for Android Studio. And simply apply the logic on that. This game will have a set of three matches. So, it’ll also have a scoreboard. This scoreboard will show the final result at the end of one complete set.

Upon entering the game they’ll enter their names. And that’s when the game begins. They’ll touch one of the empty boxes present there and get their turn one by one. At the end of the game, there would be a winner declared.

Source Code: Tic Tac Toe Game Project

5. Stopwatch

Android Project: A stopwatch is another simple android project idea that will work the same as a normal handheld timepiece that measures the time elapsed between its activation and deactivation. This application will have three buttons that are: start, stop, and hold.

This application would need to use Java and XML. For this application, we need to set the timer properly as it is initially set to milliseconds, and that should be converted to minutes and then hours properly. The users can use this application and all they’d need to do is, start the stopwatch and then stop it when they are done. They can also pause the timer and continue it again when they like.

6. To Do App

Android Project: This is another very simple project idea for you as a beginner. This application as the name suggests will be a To-Do list holding app. It’ll store the users schedules and their upcoming meetings or events. In this application, users will be enabled to write their important notes as well. To make it safe, provide a login page before the user can access it.

So, this app will have a login page, sign-up page, logout system, and the area to write their tasks, events, or important notes. You can build it in android studio using Java and XML at ease. Using XML you can build the user interface as user-friendly as you can. And to store the users’ data, you can use SQLite enabling the users to even delete the data permanently.

Now for users, they will sign up and get access to the write section. Here the users can note down the things and store them permanently. Users can also alter the data or delete them. Finally, they can logout and also, login again and again whenever they like.

7. Roman to decimal converter

Android Project: This app is aimed at the conversion of Roman numbers to their significant decimal number. It’ll help to check the meaning of the roman numbers. Moreover, it will be easy to develop and will help you get your hands on coding and Android.

You need to use Android Studio, Java for coding and XML for interface. The application will take input from the users and convert them to decimal. Once it converts the Roman no. into decimal, it will show the results on the screen.

The users are supposed to just enter the Roman Number and they’ll get the decimal values on the screen. This can be a good android project for final year students.

8. Virtual Dice Roller

Android Project: Well, coming to this part that is Virtual Dice or a random no. generator. It is another simple but interesting app for computer science students. The only task that it would need to do would be to generate a number randomly. This can help people who’re often confused between two or more things.

Using a simple random number generator you can actually create something as good as this. All you’d need to do is get you hands-on OnClick listeners. And a good layout would be cherry on the cake.

The user’s task would be to set the range of the numbers and then click on the roll button. And the app will show them a randomly generated number. Isn’t it interesting ? Try soon!

9. A Scientific Calculator App

Android Project: This application is very important for you as a beginner as it will let you use your logical thinking and improve your programming skills. This is a scientific calculator that will help the users to do various calculations at ease.

To make this application you’d need to use Android Studio. Here you’d need to use arithmetic logics for the calculations. The user would need to give input to the application that will be in terms of numbers. After that, the user will give the operator as an input. Then the Application will calculate and generate the result on the user screen.

10. SMS App

Android Project: An SMS app is another easy but effective idea. It will let you send the SMS to various no. just in the same way as you use the default messaging application in your phone. This project will help you with better understanding of SMSManager in Android.

For this application, you would need to implement Java class SMSManager in Android. For the Layout you can use XML or JSON. Implementing SMSManager into the app is an easy task, so you would love this.

The user would be provided with the facility to text to whichever number they wish also, they’d be able to choose the numbers from the contact list. Another thing would be the Textbox, where they’ll enter their message. Once the message is entered they can happily click on the send button.

#android tutorials #android application final year project #android mini projects #android project for beginners #android project ideas #android project ideas for beginners #android projects #android projects for students #android projects with source code #android topics list #intermediate android projects #real-time android projects

Einar  Hintz

Einar Hintz

1593229920

Android Menu - Steps to implement Menu in Android - DataFlair

Types of Android Menu

Let us see the various types of menu in Android:

1. Android Options Menu

The Options Menu is a collection of options for an activity. It has a set of items that are useful to perform actions. It helps us to combine multiple actions together.

Following is an example of Options Menu:

Options Menu in Android

2. PopUp Menu

Pop-Up menu is a menu that displays a list of items in a popup window. A pop-up menu appears below the view by default, in case there is no space, it appears above it.

Android Pop Up menu

3. Contextual Menu

A contextual menu is a floating menu. It appears only when the users long-press an element or right clicks on that. It generally affects the selected element.

Contextual menu

#android tutorials #android menu #android menu types #contextual menu #menu android #menu in android #options menu #types of menu in android

Chaz  Homenick

Chaz Homenick

1596459153

Building Dark Mode Theme in Android

Hello World, today we are going to see how we can implement a dark theme or night mode in our android application. This tutorial is going to be very simple and easy to understand. The dark theme is attractive to users and it is comfortable for low light conditions.

Recently many apps adapt dark mode in their app and the output of the night mode is amazing as many users love dark mode for their app. An example of a dark theme is Whatsapp dark mode in android see the below image.

Let’s look at how our app will look like, see the below gif for our end result app.

Let’s see how we can implement dark theme in our app.

Make layout for dark theme

First, we need to make our layout so that we can apply our dark theme to it.

If you see the above gif we used cardview to make our layout.

See the below code for layout.

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:padding="10sp"
    >

    <androidx.cardview.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:cardCornerRadius="10sp"
        android:id="@+id/post"
        >
        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:padding="10sp"
            >
            <androidx.cardview.widget.CardView
                android:layout_width="70sp"
                android:layout_height="70sp"
                android:id="@+id/profilePicContainer"
                app:cardCornerRadius="100sp"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                >
                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"

                    android:src="@drawable/user1"
                    />
            </androidx.cardview.widget.CardView>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/username"
                android:text="John Doe"
                android:textAppearance="@style/TextAppearance.AppCompat.Large"
                app:layout_constraintLeft_toRightOf="@id/profilePicContainer"
                android:layout_marginStart="10sp"
                app:layout_constraintTop_toTopOf="@id/profilePicContainer"
                />
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/time"
                android:text="Just now"
                android:textAppearance="@style/TextAppearance.AppCompat.Caption"
                app:layout_constraintLeft_toRightOf="@id/profilePicContainer"
                android:layout_marginStart="10sp"
                app:layout_constraintTop_toBottomOf="@id/username"
                />

            <TextView
                android:layout_width="match_parent"
                android:layout_height="35sp"
                android:id="@+id/caption"
                android:text="Lorem Ipsum is simply dummy text of the printing and typesetting industry."
                app:layout_constraintTop_toBottomOf="@id/profilePicContainer"
                android:textAppearance="@style/TextAppearance.AppCompat.Body2"
                android:layout_marginTop="10sp"
                />

            <ImageView
                android:layout_width="match_parent"
                android:layout_height="250sp"
                android:id="@+id/photoPost"
                android:scaleType="centerCrop"
                app:layout_constraintTop_toBottomOf="@id/caption"
                android:src="@drawable/post"
                android:layout_marginTop="10sp"
                />

            <ImageView
                android:layout_width="30sp"
                android:layout_height="30sp"
                android:id="@+id/likeBtn"
                android:src="@drawable/ic_like"
                app:layout_constraintLeft_toLeftOf="@id/photoPost"
                app:layout_constraintTop_toBottomOf="@id/photoPost"
                android:layout_marginTop="15sp"
                />

            <ImageView
                android:layout_width="30sp"
                android:layout_height="30sp"
                android:id="@+id/shareBtn"
                android:src="@drawable/ic_share"
                app:layout_constraintLeft_toRightOf="@id/likeBtn"
                app:layout_constraintTop_toBottomOf="@id/photoPost"
                app:layout_constraintTop_toTopOf="@id/likeBtn"
                android:layout_marginLeft="15sp"
                />

        </androidx.constraintlayout.widget.ConstraintLayout>
    </androidx.cardview.widget.CardView>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/changeThemeBtn"
        android:text="Change Theme"
        app:layout_constraintTop_toBottomOf="@id/post"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        android:layout_marginTop="20sp"
        android:paddingHorizontal="10sp"

        />

</androidx.constraintlayout.widget.ConstraintLayout>

#android-app-development #android-development #android-studio #android #android-tutorial #android-dark-mode #android-mobile-app #mobile

Tamia  Walter

Tamia Walter

1593255780

Localization in Android - Step by Step Implementation

Localization in Android

The applications that we use in Android devices can be specific to a particular language. That is where Localization comes in the role. Localization is a process that changes the string into various different languages based on user requirements. In this tutorial, we will implement it practically in our application.

Localization can be done for Dates and time as well. Localizing the string is good for the users, but, how about localizing the date and the time? Yes, it can be done too. Luckily, Android SDK includes the classes that format dates and times according to the locale. In Android SDK these date and time are handled using Date class from java.util namespace. To return the current date and time, you can use java.util.Calendar.

You can code it this way to return the Date and the Time:

Date date= Calendar.getInstance().getTime(); // this will get the date and the time
java.text.DateFormat date_format; //This will get the standard format
Date_format = android.text.format.DateFormat.getDateFormat(this);

And for Time:

java.util.Date date_today = Calendar.getInstance().getTime();
java.text.DateFormat time_format;
time_format = android.text.format.DateFormat.getTimeFormat(this);

Language Codes and Folder names:

To implement it in our application we need to first create separate ‘values’ files in the resource folder specifying the language code.

Few of the common language codes that are used in Android are mentioned below:

LanguageCodeFolder NameArabicarvalues-arBengalibnvalues-bnBulgarianbgvalues-bgChinesezhvalues-zhFrenchfrvalues-frGermandevalues-deJapanesejavalues-jaTibetanbovalues-boHindihivalues-hiTelugutevalues-tePunjabipavalues-pa

The above mentioned code and folder names would be mentioned in the strings.xml file, where the string code would be mentioned as:

  • Say for Hindi:
  • res/values-hi / Strings.xml –
<?xml version="1.0" encoding="utf-8"?>
<resources>
   <string name="app_name">स्थानीयकरण उदाहरण</string>
   <string name="hello">नमस्ते दुनिया</string>
   <string name="DataFlair">डाटा फ्लेयर</string>
   <string name="Akshita">अक्षिता ने आपको टेक्स्ट किया</string>
</resources>
  • Say for Japanese:

res/values-ja / Strings.xml –

<resources>
   <string name="DataFlair">データフレア</string>
   <string name="hello">" こんにちは世界"</string>
   <string name="Akshita">明下はあなたにテキストメッセージを送りました</string>
   <string name="app_name" translatable="false">" 私のAndroidローカリゼーション"</string>
</resources>

#android tutorials #android localization #android localization example #android localization tutorial #localization in android