Stay up to date
We'll highlight new content in your collectives with a blue activity indicator on navigation items and posts.
Manage preferences
Pinned content
View all 2 collectionsMobile Development admins have deemed these posts noteworthy.
Pinned
20
votes
10k
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 ...
Can you answer these questions?
View all unanswered questionsThese questions still don't have an answer
0
votes
0
answers
22
views
Is it possible to change the app name to match the selected app icon (like Signal) in Expo?
I'm working on an Expo app that supports multiple app icons (e.g. Notes, Weather icons).
Is it possible to also change the app name to match the selected icon so the label updates together with the ...
0
votes
0
answers
21
views
How to correctly parse a WAV file for use with Android TTS
I am trying to create a TTS engine for a TTS service i have running locally on my network.
I used an AI to generate the basics and set up the engine with the android system. But i am not able to get ...
0
votes
0
answers
21
views
Siri does not understand AppShortcut phrases when the app is not running
I want users to be able to control my app with Siri voice commands, even (and especially) when it's not running.
The phrases I have defined in my AppShortcuts work reasonably well when the app is ...
0
votes
0
answers
51
views
Android Smart TV Device Not Showing Pairing Code
I am working on Android TV Remote App. I am using Connect SDK to discover devices. To pair android app with smart TV I am using Direct SSL connection to TV's IP address on port 6467 and for pairing I ...
0
votes
0
answers
41
views
com.facebook.react.bridge.ReactNoCrashSoftException: Tried to access onNewIntent while context is not ready
I am developing an application using React-Native with Expo and Deeplink.
My application interfaces with a native hardware payment system (Stone Sunmi P2) through Deeplink.
The payment flow call is ...
Looking for an extra challenge?
View all bountied questionsThese questions have a bounty on them
2
votes
0
answers
210
views
+100
Smooth horizontal autoscroll while dragging near edges (keep item under finger)
I have a SwiftUI horizontal editor (multiple "canvases" laid out side‐by‐side in a ScrollView). When the user drags a selected object and reaches the left/right edge of the visible area, I want the ...
2
votes
1
answer
118
views
+200
Android Instrumentation test : Run button icon is not appearing for custom buildType & classes not getting resolved
I'm trying to run instrumentation tests but
Classes are not getting resolved, getting Cannot find declaration to go to
Run button icon is not appearing for @Test functions so not able to run tests
...
0
votes
2
answers
262
views
+100
Can't capture every emittion from StateFlow when testing with Turbine
I'm trying to test my viewmodels that exposes a public StateFlow via stateIn operator:
class HomeViewModel @Inject constructor(...) : ViewModel() {
private val _uiState: MutableStateFlow<State&...
Recommended answers
View all recommended answersThese answers have been recommended
Best practices
1
vote
1
replies
41
views
How to create a programmatic list of lists
My code loops through rows in SQLite and builds text views / image views to add to linear layouts and displays on screen. My users add fabric manually so each entry would be very different across ...
Answer
Look up RecyclerView. It's a way to efficiently do scrollable repeated layouts.
Advice
2
votes
1
replies
54
views
Using Actor is always the best practice in Swift Concurrency world?
I'm generally holding a Task variable to use cancel for an efficiency in somewhere. (and also calling cancel before setting the Task to avoid making duplicate asynchronous job.)
class Test {
private ...
Answer
I don’t think you are overthinking this. This is precisely the sort of thought process you should go through if your type has any mutable state, IMHO. Actor isolation is the simplest way to mitigate ...
Advice
0
votes
3
replies
46
views
What is the most memory-efficient UI artefact to display a "Critical Out of Memory (OOM)" alert in Android?
I am looking for a way to display a "Critical Memory" warning to the user when application reaches "Out of Memory' (OOM) state.
When app reaches the OOM state, the Java heap is ...
Answer
You don't. When you go OOM, except in very specific circumstances there's no way to know what allocation failed, and thus no way to know if you can continue and work correctly at all. The correct ...
4
votes
1
answer
73
views
How to find out if a URI is a MediaStore URI
When using ContentResolver.query() on Android to find out the display name of a content URI, I need to use different projections depending on whether the URI is a document or a MediaStore URI. When ...
Answer
I do not think there is a reliable way to determine if a Uri is from whatever the device manufacturer is using to implement MediaStore. So, if DocumentsContract.isDocumentUri() returns false, query ...
Best practices
0
votes
2
replies
44
views
How do you create video feeds with poster in Kotlin Multiplatform?
I’m developing a Kotlin Multiplatform application using Compose Multiplatform. I’m consuming an API that returns a list of images and videos, and for each video I want to display a static poster image ...
Answer
"This feels like a hack" -- we cannot comment on that code, as it is not in your post. Off the cuff, it does not feel like a hack, so you might want to both post that code and explain why ...
See what's trending
View all trending questionsThese are the most active questions in Mobile Development Collective
4374
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 ...
3568
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 ...
6430
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?
3180
votes
54
answers
837k
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 ...
2748
votes
66
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....
Learn something new
These are the most recent articles in Mobile Development Collective
12
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 ...
Members can contribute articles
Simply submit a proposal, get it approved, and publish it.
See how the process works
Simply submit a proposal, get it approved, and publish it.
See how the process works