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23
votes
11k
views
Android Frequently Asked Questions
The Android-related questions that get asked repeatedly, gathered together in one place. What does a new developer always ask at some point? What are the most common questions when someone is ...
- 101
Can you answer these questions?
View all unanswered questionsThese questions still don't have an answer
2
votes
0
answers
23
views
How to implement a stacked notification layout using RecyclerView in Android?
I want to implement a notification-style list using a single RecyclerView in Android.
The layout includes:
Grouped (stacked) notifications: multiple items combined into one group
Normal ...
2
votes
0
answers
65
views
TextAlign.Justify only works on the emulator, not on a physical device
why are all the lines (not just the last line of the paragraph) aligned to the left on a real device, while on a virtual device they are aligned to the width of the screen except for the last one (as ...
- 56
0
votes
0
answers
32
views
Firebase Apple Sign-In with Expo: audience in ID token is host.exp.Exponent instead of my bundle ID
I am implementing Sign in with Apple in an Expo React Native app with Firebase Authentication.
I already:
enabled Apple as a provider in Firebase Auth
added the Apple Developer configuration (Key ID,...
- 52
0
votes
0
answers
20
views
`UIHostingController` inside transformed `UIView`: SwiftUI text changes font size/position during pinch zoom only in editor screen on iOS 26
Body
I have an iOS app with a board editor built in UIKit. Each board item is a UIView, and some item types (note, date, calendar, countdown) render their content with SwiftUI hosted inside that UIKit ...
- 712
0
votes
0
answers
23
views
App Store Connect says RPBroadcastProcessMode is missing in ReplayKit broadcast upload extension, but archive and IPA both contain it
I’m trying to upload an iOS app that now includes a ReplayKit Broadcast Upload extension.
This app already had another extension (WidgetKit), and I had successfully uploaded/distributed multiple ...
- 853
Looking for an extra challenge?
View all bountied questionsThese questions have a bounty on them
0
votes
1
answer
227
views
+50
Flutter deploying to Android studio creating prolog error
I am trying to deploy my first flutter app to an android emulator in vscode/intelij/android studio. All give me the same error. I have been searching and can't find a solution. Deploying to a medium ...
6
votes
1
answer
232
views
+100
ARCore tracking flickers between TRACKING and PAUSED, planes=0 and points=0, hitTest always empty
I am developing an Android ARCore app (native ARCore, not Sceneform). The app worked correctly around November 2025, but since December, plane detection no longer works.
Symptoms
In the debug overlay:
...
- 61.2k
10
votes
0
answers
1k
views
+500
Use OpenCV in a Kotlin Multiplatform Mobile(KMM) project
Setup:
We are currently using OpenCV on iOS and Android for image processing. On Android we import OpenCV as a .aar and on iOS we import it via Cocoapods, and they call the same underlying functions.
...
- 16.5k
Recommended answers
View all recommended answersThese answers have been recommended
Advice
0
votes
1
replies
46
views
Is the intent:// URI scheme a standard Android feature or a browser-specific implementation?
I am researching how deep linking works across different Android browsers. I noticed that using the intent:// syntax allows one browser to launch another or trigger specific app actions.
For example: ...
Answer
Regarding 1, the answer is "yes". See this and this and this. However, I do not recall the exact format of the intent scheme Uri being documented.
Advice
0
votes
3
replies
51
views
Is it possible to switch productFlavors(stage, prod and qa) dynamically
I have a requirement to implement an option to switch in between the build variant dynamically, so tried to find the way but no luck.
it's like Only one build with for all variant with options to ...
Answer
Do you mean switch servers to hit prod, qa, staging, etc endpoints? Yes, if you architect your app to do so. That generally means anything that references the URL should get a base URL from a ...
View answer
- 95.3k
Advice
0
votes
6
replies
97
views
How to properly compress images for recycler view
I have a recycler view displaying multiple images\details from a SQL DB. I have tossed a few ideas back and forth about how to best display the images but I've run into a couple issues.
Initially I ...
- 1,944
Answer
When you take the image, instead of just creating the image, create a thumbnail (a smaller version of the image) as well. Store the location of both the main image and the thumbnail in your db, each ...
View answer
- 95.3k
Best practices
0
votes
7
replies
73
views
How to(do I) write a network data consumption monitoring program that monitors all system processes and has control over them?
How do I write a program that alerts me when any app connects to the internet on Android or Windows?
My problem is my data subscription is getting drained. I don't know what apps are sucking it.
I can ...
Answer
The first step would be to configure the used wifi connection is Windows as metered connection. Some apps can be configured to reduce data usage on metered connections. Regarding the software I fear ...
View answer
- 43.6k
Advice
0
votes
2
replies
70
views
CRM Mobile App development (Android/IOS) - both
is claude is helpfull to develop a React Native application CRM like App in vscode using claude in vscode teminal chat and build end to end app.
give me some tips.. how to get that knowledge and ...
- 341
Answer
My tip- learn to program. Actually program. If you can't do that, even if you get AI to spit out something useful (doubtful), you'll have a buggy, non-performant, insecure piece of junk that will ...
View answer
- 95.3k
See what's trending
View all trending questionsThese are the most active questions in Mobile Development Collective
4372
votes
132
answers
1.9m
views
How can I close/hide the Android soft keyboard programmatically?
I have an EditText and a Button in my layout.
After writing in the edit field and clicking on the Button, I want to hide the virtual keyboard when touching outside the keyboard. Can someone provide a ...
- 1,787
3569
votes
78
answers
1.2m
views
Why is the Android emulator so slow? How can we speed up the Android emulator?
I have got a 2.67 GHz Celeron processor, and 1.21 GB of RAM on a x86 Windows XP Professional machine.
My understanding is that the Android Emulator should start fairly quickly on such a machine, but ...
- 78.1k
6431
votes
35
answers
1.5m
views
What is the difference between px, dip, dp, and sp?
What is the difference between the units of measure
px, dip, dp, and sp?
3181
votes
54
answers
843k
views
How can I stop EditText from gaining focus when an activity starts in Android?
I have an Activity in Android, with two elements:
EditText
ListView
When my Activity starts, the EditText immediately has the input focus (flashing cursor). I don't want any control to have input ...
- 31.1k
2748
votes
65
answers
1.5m
views
How can I fix 'android.os.NetworkOnMainThreadException'?
I got an error while running my Android project for RssReader.
Code:
URL url = new URL(urlToRssFeed);
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory....
- 11.8k
Learn something new
These are the most recent articles in Mobile Development Collective
14
votes
1k
views
1 minute read
Using SwiftData with SwiftUI
One thing we iOS developers should rejoice about is the development of SwiftData, at least if you are coding for a very new project and can forget about iOS versions below 17.
We finally have an ...
- 402
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