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RecyclerView is not able to reference the TextView

I am developing an application that connects to a database and displays the records of each table in a RecyclerView that has CardViews inside, but when I run the application I get the following message in the Android Studio compiler: E/Andro...

Can't use HTTPS to download from website with early Android versions

I have an Android app which downloads simple text files from my website using HTTPS. I have been testing it on emulators for every version from API18 onwards, and on real devices running API18 and API28. It works fine for API21 and above, but for...

How to upload an app over maximum size?

Hi, I'm new to Android world and I got a problem when I try to upload my first game which is 350 MB to Google Play Console. I have searched for many days but I still have no idea what is the right way to handle it. It seems like Dynamic Deliv...

How to Set Previous Title of a Fragment When Back Pressed in Java?

I have created a activity in which I placed a fragment and inside fragment I have used a card view. when I click on card view it moves to next fragment and set title of card view to next fragment toolbar. The problem is when I press back button...

How to Use Class For Sending Notification In Android?

I wanna create a library for sending a notification to my android app but i don't know how it works and what kind of data I should give to the function in the class. this is my code for sending a notification but I don't know how to put i...

7 mHealth iOS & Android Apps that are Transforming Healthcare Sector

Seemingly, we have advanced a lot from where we stood before digital technologies knocked at our doors. But of what use is an advancement if it doesn’t directly benefit the mankind? That isn’t dedicated to serving the human aspects of...

List of Best 6 Effective Tips On Developing a Profitable Mobile App

Customized apps, fine tuned to the needs of a company’s customers can be said to be the USP of businesses these days. Here are some effective tips the mobile app development companies should keep in mind in order to optimise a mobile app to...

How can I Create an App/Start-Up When I have no Coding or Designing Skill?

If your question is How to Create an App from Scratch that too without coding then I believe the answer is yes. If you are thinking of creating a basic application then it is entirely possible to make one for Apple IOS or Android. In order to do ...

What are the Biggest Challenges Faced by Mobile App Creator?

Building an app is not an easy process. A mobile app creator faces many challenges. As people move towards using mobile apps for everything, an increasing number of businesses are shifting to mobile based applications instead of web-based applica...

Upload Image and String to Server - Secret Key Not Match in Response Error

Hi can anyone help me with this. i have to pass secret key . the method which i did is correct? am getting secret key not match in response .i also attached postman screen shot please see this. private class uploadFileToServerTask extend...

How to Upload Image and JSON to Server

Hi am Fresher in android . am creating a app which i need to upload captured image and JSON data which i got from QRcode to PHP server. But am getting Secret_key not matched message when i debug.  I Checked API from postman the server is ...

Top 7 Ways to Choose the Best Technology Stack For Mobile Development

  There is an undoubted Impact of mobile industry on the development of various industries. This statement is evident from the statistics that around 6 billion gadgets are in use by 2020.   Mobile industry is just wrapping ...

List of 10 Best Face Recognition Software for Android

Smartphones are the inevitable part of our daily chorus. The application we are using in it makes it more and, more useful for all of us. It will help you to grow in this digital world. In this article, you will come to know about the 10 best fac...

Android IntentService Basics And Its Use in App Development

IntentService is one of the least difficult approaches to offload "pieces" of handling of the UI string of your application and into a remote work line. There's no compelling reason to dispatch an AsyncTask and oversee it every sing...

Native VS Cross-platform App Development: Which One Should You Opt For In 2019

Markets worldwide have evolved through mobile. Emergence in mobile usage brings a strong wave of app downloads and app usage in densely populated and developing markets like India and Indonesia. This brings about a positive change for both, the c...

An Easy Guide to Material Design Implementation for Android Developers

Material Design was launched in Google I/O 2014 for Android developers in 2014 with the purpose of revitalizing and improving the user interface, although it also works for iOS and web. However, it was something else. Material Design is a visual ...

New WhatsApp feature to prevent others from reading your chats

WhatsApp, a wonderful messaging app. Of course there are presently lot of messaging services around, however Whatsapp had a massive head start on practically every one of them, which means it has huge number of features. If you are planning to de...

A Comparison of Compilation Speed of Kotlin Vs JAVA

Java has become the reference language when it comes to programming applications for Android, but serious rivals have arisen, from C++ to Scala. One of those competitors is Kotlin, a language that was conceived and started to be developed in 2011...

RINGING_MODE_SILENT Not Executing in Android Application

Dear all, I am not able to access RINGING_MODE_SILENT in my application it crashes my application. I am using android oreo 8.1 API level 27. Here is the log file   2019-01-18 14:42:58.818 5658-5658/com.example.user.speakercontrol E/...

Drawing a circle on ImageView2 in same coordinates as ImageView1 if i tap a place in ImageView 1 and Vice versa

I'm trying to make find the difference game app, but I never made anything like that and since I'm a new to development I'm stuck well baby Steps are always needed to learn xD **I read in some documentation that i have to get ea...

The Truth of Migrating to AndroidX (Android Jetpack) Guide to Developer

  This year, Google announced at its developer event Google I/O the creation of a new set of libraries, tools and architectural guidance for Android: AndroidX, better known as Android Jetpack. But what is Android Jetpack? It is a seri...

Is it Possible to Encrypt & Decrypt Total Json Response in Android ?

As per the project, we will receive the JSON response in an encrypted format while receiving we need to decrypt the response back to original format and bind to the project. Again while posting the data we need to encrypt the data.   S...

Can You Help Me in Debugging this Android Code?

Can anyone please explain me this code ? Final class called ‘UserProfile’. Make the default constructor private. Create an inner class called ‘Users’ by implementing ‘BaseColumn’ interface. Inside the inner ...

Role of UX Research in Mobile App Development

  UX research plays an important role in developing and designing an app. It involves the process of observing, understanding what they want and analyzing your targeted users and how they interact with your product. UX research actual...

How to Change Array List to Integer or Double in JAVA Program

Hi   How can I change an array list to integer or double?   this is my code and i want show answer like a number and i use it not just print it...   import java.util.*; public class JavaApplication28 { p...

How to Retrieve Storage Information Programmatically in Android Device

Hay Guys,   I need your help. I have a task to getting information storage android programmatically (RAM, ROM, Processor, PCU). I hope all of you can help me.   Thanks

How to use MVVM Architecture with rxjava and retrofit in Kotlin

MVVM stands for model view view-model pattern which helps to separate development of graphic user interface and remove lots of bboilerplatecodes. So in this blog we will help you to use MVVM architecture with rxjava and retrofit in Kotlin or...

How to Solve Facebook Login Problem During Cross Platform App Development?

If you are making build for Android and you face error like -- Execution failed for task ':app:processDebugResources'. > Failed to execute aapt * Try: Run with --stacktrace option to get the stack trace. Run with --info or --...

How to Create App from Commandline Without Android Studio

I am trying to create an android app without ide.. used command line tool only. any way to create a project without android studio?? Looks like android create project is deprecated long ago...

Draggable GridLayout | Android

In draggable gridlayout cells of the GridLayout(consist rows and columns) can be draged from one position to another by using OnDragListener.     To use GridLayout, first add gridlayout to project gradle (app level) and fol...

How to Show Badge Count on App Icon in Android App's Launcher

As a badge count there is no standard way of doing this. However, one of the ways to do it in a simple way is by adding badge num on your application icon in launcher. It is handled by using a broadcast receiver. All the handset doesn't provi...

Extract YOUTUBE Video URL and Play Using Exoplayer

Exoplayer is an open source application level media player for Android. For playing audio/video both locally and through internet this media player is very good and alternative source for Android's Media Player API along with features like Dy...

Expandable RecyclerView with Animation in Android

Expandable RecyclerView contains two views one is parent view and other is child view. Parent is visible by default but the child view has to be expanded and collapsed. It will expand when we click on parent view. Let's see the Implementat...

How to Call a Class (with parameters) into Another Class in Android

Android Studio:   Hi everyone. How's it going? I'm having trouble with calling the Matrix class into the Main Activity. Basically, when the lock button is pressed, the matrix class should run/be active. I'm not sur...

Autosizing TextViews | Android Tutorial

Android 8.0 (API level 26) included a feature which allows you to instruct a TextView to let the text size dynamically expand or contract automatically to fill its layout based on the TextViews characteristics and boundaries. This setting makes i...

How to Integrate Firebase User Authentication in Android App 11 Easy Steps

Firebase is a google's mobile platform that helps us to develop high-quality apps in minimum effort. Firebase provides Authentication library to authenticate users, you don't need to save user data on your local server because firebase sa...

How to Integrate an Open Street Map in Android Application

In this blog we will learn to use open street map (OSM), adding marker and get device location. OpenStreetMap (OSM) is absolutely editable Wikipedia like world map which is also free. Through openstreetmap you can easily download maps for the ...

How to Do Video Casting from Android Webview

There are websites that contain players that utilize the video casting ability. We are able to cast to Chromecast while visiting these sites on a mobile web browser. However, when viewing these sites from within a webview on my android app the ca...

Guide to Install Android's Via Browser and Reason to Use It

The number of browsers for the android users is increasing by every passing day and people want to have browser that can give the best in class experience. In today’s world, you all want to have browsers that can satiate and suit up to your...

Google Safe Browsing Using Api or SafetyNet

We very well knew about WebView to provide browsing functionality in our app so that user don't need to leave our app but do you know that some websites show lots of dialog boxes or popups, navigation, and these links, clicks or popups can ha...

Unhandled exception type XmppStringprepException

import org.jivesoftware.smack.tcp.XMPPTCPConnection; import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration; import org.jxmpp.jid.DomainBareJid; import org.jxmpp.jid.EntityBareJid; import org.jxmpp.jid.Jid; import org.jxmpp.jid.i...

How to Implement Callback in Android to Communicate Between Classes & Fragments

Callback is a way to inform a class synchronous/ asynchronous when an event occurs. A simple way to create a generic callback is to use interface with a method in which JSON is passed.     So, In this tutorial, I will guide...

How to Detect Network Connectivity Using Observer in Android Device

If you want to check whether your device connected to Internet or not OR when it turn on/off then adding the observer is the best way. You have to add the observer in activity to check connection is on or off.     Let's...

How to Get Rid of Oreo Signalr Issue in Android 8.0

Hello, When i am using signalr client sdk in android , but its not installing application in android oreo(anroid 8.0) and error occurs like "Installation failed with message Failed to finalize session : INSTALL_FAILED_NO_MATCHING_ABIS: Fa...

How to Resolve Android Oreo Signalr Error?

Hello,   When i am using singalr client sdk in android studio its working fine emulator API 23, but when i am change emulator API 26 (Android 8.0 oreo) its shown error like "Installation failed with message Failed to finalize sess...

How to Get the Customer Value as Null in An Android App?

Here is my code public class NewAddressActivity extends BaseActivity { private RobotoEditText houseNumber, fullName, phoneNumber, alternateNumber; private RobotoEditText region; private RobotoEditText landMark, town, pi...

What is API and SDK?

Hello Nerds, I am a non-techie and would like to know what API and SDK mean. Can someone here help me understand these?   Regards, Priyanka   P.S. Please don't copy the answers from Google as I have already lo...

How to fix Error:(52,55): Incompatible Types: EditText Can't be Converted to String in Android Studio

bRegister.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { final String password = etPassword.getText().toString(); final String email = etEmail.getText().toString(); ...

Android: make a view visible in RecyclerView without calling notifyDataSetChanged()?

 Hi,   I have building an exhibition venture. I am utilizing RecyclerView to demonstrate every one of the pictures originating from server. I am utilizing Picasso to stack the pictures into the Adapter. Presently I have an Edit ca...
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