Contact
Contact
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
18
votes
8k
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
0
votes
0
answers
9
views
Flutter emulator device offline – adb fails with device offline error while native apps install fine
I'm facing a persistent issue with the Android Emulator while working on Flutter projects on my office laptop. The emulator boots and works perfectly when I install native apps (Kotlin/Java), but ...
- 83
0
votes
0
answers
8
views
How to generate the AAR file by using Soong build system (by Android.bp only)
I am using the following Android.bp to generate the AAR file:
android_library {
name: "MyModuleLib",
system_ext_specific: true,
srcs: ["src/main/java/**/*.java&...
0
votes
0
answers
13
views
Binding not updating as expected between SwiftUI and UIKit
I have two views. One is in SwiftUI, the other in UIKit.
Essentially, the UIKit is a UITableViewController that lets the user re-order items in a list.
In the SwiftUI view, I have a function ...
- 281
0
votes
0
answers
31
views
SwiftData crash: "Passed nil for a non-optional keypath" when using non-optional struct with optional properties in @Model
I’ve run into a reproducible issue when using SwiftData with @Model classes that contain non-optional value type properties (struct) with optional properties inside.
After creating a new model, the ...
- 52.4k
0
votes
0
answers
8
views
Flutter/IOS: What could cause a single user to get a "No route to host" error?
One user in particular is struggling to use my app on a new iPhone. We've confirmed other devices on the same wifi network work with the same app totally fine, and we've also confirmed that switching ...
Looking for an extra challenge?
View all bountied questionsThese questions have a bounty on them
0
votes
0
answers
42
views
+500
AVAssetExportSession Fails with "Operation Interrupted" After Merging Audio Segments (iOS Async/Await)
I need a reliable way to handle phone call interruptions during audio recording in my iOS app.
After extensive testing, I've concluded that the most robust approach involves stopping the current ...
- 42.6k
5
votes
1
answer
2k
views
+100
Chrome Remote DevTools Connection Drops after few minutes
I am using chrome://inspect/?#devices to connect with my android device.
After ~20 minutes my device gets disconnected automatically every single time.
After it gets discontinued my device asks for ...
- 163k
Recommended answers
View all recommended answersThese answers have been recommended
0
votes
1
answer
27
views
Testing library for 16kb page size
As native libraries soon need to support 16KB page size I would like to test existing .so libraries.
According to the Google documentation this can be done using atest:
You can run atest ...
- 43k
Answer
Another Google documentation mentions a script named check_elf_alignment.sh which checks all libraries contained in a APK file. However this script only runs on Linux and MacOS. However the ...
View answer
- 43k
0
votes
1
answer
27
views
Apk sign with both v1 and v2 schema
I am having problem to sign my apk with both v1 and v2 version but in the dialog box of generating signed apk, in no step I get the checkboxes foe choosing version1 or version 2 schema.
I am using ...
- 43k
Answer
The APK signature v2 was introduced with Android 7 (API 24). Your project defines minSdk 25 (Andorid 7.1) thus it will never run on platforms that doesn't support APK signature v2. Therefore APK ...
View answer
- 43k
1
vote
1
answer
70
views
iOS custom Operation for Operation Queue gives warning Class must restate inherited '@unchecked Sendable' conformance
I am using Xcode 16.2.
I have the below Operation:
import Foundation
import UIKit
typealias ParsingCompletionHandler = ((ParsedRecord) -> ())
class RecordParseOperation: Operation {//THIS GIVES ...
- 439k
Answer
Accepted
You can do what it suggests, namely add @unchecked Sendable conformance. But when you do that, you are entering a contract ensures that you will implement thread-safe access to any mutable state. In ...
View answer
- 439k
1
vote
1
answer
63
views
How to wait until async function finish the job and then call it again from non async method?
The case:
class ApplicationDelegate: NSObject, UIApplicationDelegate, UNUserNotificationCenterDelegate {
private let cloudAssistant = CloudAssistant.shared
// MARK: - ...
- 439k
Answer
Accepted
There are a variety of approaches: Await prior task: @MainActor class CloudAssistant: ObservableObject { static let shared = CloudAssistant() private var previousTask: Task<Void, Error>...
View answer
- 439k
1
vote
1
answer
25
views
AAC from HLS TS causes clicks when decoded to PCM per segment
I'm working on a custom HLS audio player for iOS.
Each .ts segment contains AAC audio. I extract AAC from each TS file, decode it to PCM (using FFmpegKit), and schedule it using AVAudioEngine.
❗ ...
- 36.3k
Answer
But when decoding each TS independently, the result is discontinuous and causes audible artifacts. This is your problem right here: the AAC TS segments are NOT independent. To decode segment N you ...
View answer
- 36.3k
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 ...
3566
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 ...
- 359
6423
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?
- 847
3181
votes
54
answers
836k
views
How to 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 ...
- 468
2746
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....
- 11.7k
Learn something new
These are the most recent articles in Mobile Development Collective
11
votes
736
views
2 minute read
Basics of Kotlin coroutines
Basics of Kotlin coroutines
What is a coroutine?
A coroutine is a concurrency design pattern that you can use on Android to simplify code that executes asynchronously.
They are“lightweight threads”. ...
- 4,530
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 ...
- 382
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