Found 2041 Articles for Mobile Development

Introduction Android is an operating system designed by Google for mobile devices, based on the Linux kernel and other open-source software. Android is used on smartphones, tablets, watches, televisions and automobiles. Android developers have to use different contexts while developing an application. When it comes to using a context inside a class or method one needs to understand the difference between getApplication() and getApplicationContext(). So in this article we will take a look at getApplication() vs getApplicationContext() in Android. What is context? Context is a situation during which some event happens.In android context is considered as the current state ... Read More

Introduction Android apps are created using a variety of components and tools, including activities and fragments. Knowing when to use a fragment versus an activity is key to developing an efficient and successful app. This article will explore the differences between activities and fragments, and guide developers in determining when to use which tool. What is Activity in Android? An activity is the most basic form of an Android app. It typically represents a single screen with a user interface, and is used to create a basic user experience. Activities are typically used to launch and manage other components of ... Read More

Introduction Many times while building an android application. We came across a scenario where we have to store some of the data inside our mobile application. Such as the applications that store the session of the user. Android provides several different ways which we can use to store the data within an android application such as SQlite database, Sharedpreferences, Room Database and others. Each data storing method is used for a different purpose of data storing. If we have to store data in the form of tables then we prefer using Room database or SQlite Database. What is Sharedpreferences in ... Read More

The Android UIThread is the main thread of the Android operating system. It is responsible for handling all user interface components and events. The UIThread is responsible for creating and managing the user interface, from creating the Activity and Fragment objects to handling user input, and drawing the user interface on the screen. The UIThread is responsible for executing the main loop of the application, which is responsible for updating the user interface and responding to user input. This loop is constantly running, even when the user is not interacting with the application. This ensures that the application always ... Read More

Introduction Android Debug Bridge or ADB is a versatile command line tool which allows you to communicate with an Android device to control and manage the application to be installed in an android emulator. With ADB we can copy files, run shell commands and do many more operations. In this article we will discuss on How to start our application in an android emulator using ADB Tools. Implementation We will be creating a simple android studio project in which we will be displaying a simple text view. After that we will be using our ADB Tools commands to launch this ... Read More

Introduction Many android applications use APIs within their application so that they can interact with the database and perform read and write operations on the database. There are several libraries which we can use to make API calls within our android application. In this article we will take a look at How to send POST requests in JSON using HTTP Client in Android. Implementation We will be creating a simple application in which firstly we will be displaying the heading of our application. After that we will be creating two edit texts which are used to get the name and ... Read More

Introduction Many times in android application api calls are being made. For making this api call it is necessary that the device is connected to the internet. Most of the applications before making any api call make sure that the device is connected to the internet. Along with that when an application is downloading some big files in that case the application generally checks whether the device is connected to wifi or not. In this article we will take a look at How to see if the android device is connected to Wi-fi or not from our android application. Implementation ... Read More

What is signing of an Android APK Signing an Android APK (Android Package Kit) means applying a digital signature to the APK file using a private key to verify the authenticity and integrity of the package. The signature is created by a developer or an organization and is unique to their app. When an app is published on the Google Play Store, the app must be signed with a certificate that verifies the identity of the developer or organization who published the app. This certificate helps ensure that the app has not been tampered with or modified since it ... Read More

Introduction Android applications are built using different components such as Activities as well as Fragments. Fragments are lighter versions of activity and hence they are used in most of the cases for displaying the UI of the application. Fragments are considered as one of the essential components of Android application. They are generally used to create a complex, dynamic user interface that is both robust and highly customizable. Managing the Fragments in an android application is a bit tricky and particular when it comes to resuming fragments from the back stack. In this article we will take a look at ... Read More

Introduction Many times in android applications we have to download a specific file and we store that file in our device's external storage. Sometimes we have to access these files fromour devices external storage and display the content from these files within our android application. In this article we will take a look at How to read a text file from the SD Card in android. Implementation We will be creating a simple application in which we will be displaying two text views. In the first text view we will be displaying the heading for our application and in the ... Read More