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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...

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 ...

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...

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 ...

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 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...

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...

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...

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 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...

Can Android Handle Accidental Touch Input due to Sudden GUI Change?

Hi, I am trying to search for Android method which handles the following situation:   When there is a sudden change in the GUI, during a user input, it might be interpreted incorrectly. For example, when user provides touch input an...

In (Q-Municate) Android Application callActivity is Not Opening?

I am modifying (Q-Municate) application powered by (QuickBlox) but I am facing one problem. When, I receive calling notification; I launch calling activity but it's not getting appear instead application get's open normally but calling ac...

How to ask for multiple permission at once in android?

How to ask for multiple permission in android at once. I m using below code but it is asking one permission at once, and when I close the app and relaunch it then it asks for next permission. How to get rid of this prob,,,,,,, any help  T...

How to Disable (delete) Permissions From App

Hi i want to disable (delete) these permissions from my app <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permissi...

JSON parsing in android

I have problem with parsing JSON data in android. I want to populate the following json data to spinners. I have populated the categories to 1st spinner but i need to populate the 2nd spinner for subcategories which is dependent on 1st spinner. ...

How to do Proper Ancestral Navigation for Android App with Several Activities?

  How to implement proper ancestral navigation for application with several activities one of which can swap content fragments?   I have one main activity with drawer layout and with content re...

How to change gridView child background at given position in android from another activity?

I actually want to change particular background of grid view from another activity at user given position. But when i go to activity which contains grid view , add call gridView.getChildAt(position) i got an error .getGetChildAt() call on null ob...

How to Implement Proxy Client on Android using VPN Services

Hello I am trying to implement proxy client on Android. For this purpose I using VPNService. When I connect to server and send first package from device over created socket I receive from server Bad request 400 error.   Maybe someone w...

How to Resolve AppActivity Crash Issue On This Code and Barchart Not See?

Need a help in appactivity crash issue My code is: package wallet.ask.com.abcd; import android.app.ProgressDialog; import android.graphics.Color; import android.os.AsyncTask; import android.support.v7.app.AppCompatActivity; import andro...

Is there any, ONE App Development Language for ANDROID, WINDOWS and iPHONE?

Hi, I want to develop a mobile application for Android, windows and iPhone. I heard that Google developed a language in which you can develop application for Android, windows and iPhone by using just one language or may b just one platform. Bu...

How to capture image from front camera in backend on button click using phonegap?

I Want to learn about how to capture image on login button click from the front camera of smartphone without knowing user and display the pic on the next page. For development I am currently using PhoneGap. Please help.

Hold values in android studio for textview and checkbox

how to hold value of text view and checkbox in android studio so that the set data will visible when i go to that activity lateron and when i set new value then new value get hold.

How to insert this codes data to SQLite?

Need help in inserting the below code packet to SQLite: public class StepDetector { private static final int ACCEL_RING_SIZE = 50; private static final int VEL_RING_SIZE = 10; // change this threshold according to your sen...

How to show single textview in different color?

Hello everyone, i have this  <string name="disclaim">DISCLAIMER:Next Vision Research Solutions Pvt. Ltd. holds the right of refusal/cancel/acceptance of the junk responses either intentionally or unintentionally submitted by an...

Android Swipe View is Too Heavy to Swipe, It Stuck on 1st Swipe

Hey!   I am stuck in a weird problem for some 2 days,kindly help if someone knows what exactly it is.   Problem being, I have an app with tab view (3 swipe tabs somewhat like watsapp's tabs). Tab1 , Tab2 ,Tab3 . Ta...

Json textview to Json viewlist

public class ExistingCSheet extends AppCompatActivity { private TextView listing; String[] items; ListView lv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanc...

Applications on SD card moving back to Phone

Hi, I am using Yuphoria 5010 and Lenovo Vibe K5 smart phones running stock Android 5.1.1. Both the phones are installed with 16 GB Class 10 memory cards.   I moved many applications to the SD card. Now, whenever these apps are updat...

How to get the individual texts from edittexts in a loop

Please i have a for loop which creates edittext according to what the user types in. It displays the edittexts in a linearlayout.  What i want to do is to get each of the texts from the edittexts and store it in an arraylist  This is t...

Network provider and GPS provider working together, need to separate the both based on available providers

I am trying to develop an android application that gets the device latitude and longitude using GPS or Network providers, whichever is available for the process. The code works perfectly fine when the device's GPS is on but unfortunately it n...

How can i arrive at the my expected output in my android project?

Hello friends how can i arrive at my expected output in my android project? Currently, I am getting all the output values such as brand,model,type,variant as integers instead of text. Actually i need my result as  RegNo: TN10D5551 B...

ListView is not getting displayed on selecting an item from spinner. What to do?

I am creating two spinners: One for City and the other for Area in that particular city. As per the selection made by the user in the above spinners, a ListView will be displayed which will be different for different combinations of selections ma...

What's the best resource and format for notification sounds in an app?

Hi all, I am working on notification sound in android can anyone suggest me the best resource and format for the same.

Android Help

Hello Friends,I m developing an android app based on Gym Management System Well I have complete the CURD part coding now I only want attendance and fees remainder coding section please Help me out guys or guide me 

How to share image with text on Facebook using intent filter in Android..?

Hello, I want to share the image and text on facebook using intent filter not with facebook sdk. Is there any way to do this..? Thanks in advance  

Countdown timer in listview android

How to add the countdown timer in the custom listview..?

Button not showing in android app

Hello I have created six buttons in an app in android studio inside the Relative Layout. The buttons show OK in the preview mode of android studio but they second last one does not show when I install my app to test on a phone or an emulator. Wha...

Has anybody used Google Song Recognition for their App?

 I'm working on an App which recognizes a song and draws similar song recommendations from Echo Nest. I want to know if Google Song Recognition is any good and how easy/hard it is to implement.

I failed to customize array adapter

Problem facing in customization of array adapter I am want to 1) fetch data from a SQL server 2008 2) display fetched data into a list view. After successfully I tried to display data with a listview, I fetched two column data that&...
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