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18
votes
9k
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
10
views
OnnxRuntime SO files does not get packaged in a APK file generated from Xamarin app
I am figuring out how can I run my machine learning model in C#.NET Xamarin Android app. I am testing it inside Android device created using Android Device Manager that comes with VS2022. I have ...
- 25.1k
0
votes
0
answers
10
views
Subviews within UIScrollView are being clipped
I'm working with PencilKit and SwiftUI to build a simple note taking app
I have a PKCanvasView as a subview of a UIScrollView (Because I want to zoom and pan between multiple pages). I'm not sure why, ...
0
votes
0
answers
13
views
FPS Locked at 25 Even in Empty Scene
I'm currently using Unity 6 and I've encountered a strange issue when building for Android. Even in a completely empty scene, the game runs at a constant 25 FPS on my Android device.
Here's what I’ve ...
- 1
0
votes
0
answers
17
views
Flutter connection with external API on Raspberry, via tailscale
I have a Raspberry with Tailscale installed and a phone with Tailscale installed.
The two devices ping each other.
An API is hosted on the raspberry that is called by an application developed in ...
0
votes
0
answers
16
views
Remember scroll position when navigating screens of the app
I'm trying that the Android app remembers in which position of the screen the user left it off, so they can carry on when they move back and forth in the app.
I'm looking for the simplest way (ideally,...
- 18.3k
Looking for an extra challenge?
View all bountied questionsThese questions have a bounty on them
-1
votes
2
answers
95
views
+50
Why KVO has no response while the rest of the code seems to work and runs without any error
// Inside root view controller
- (void) play_test_video {
g_video_test = [AVPlayer playerWithURL : file_url];
g_video_controller = [[AVPlayerViewController alloc] init];
...
- 444
-1
votes
1
answer
53
views
+150
Expo iOS build crashes when building internal prod build but not with expo run:ios
My build crashes when running with
eas build --profile production --platform ios
But not with expo run:ios
eas.json:
{
"cli": {
"version": ">= 0.60.0",
&...
- 1,346
-1
votes
1
answer
62
views
+500
Question to native Thai iOS developer regarding Thai character line break
I know nothing about Thai language.
Recently, I render Thai string in single UILabel.
Then, the reviewer sends me the following feedback.
What I can understand is that, this issue really mean, Thai ...
- 1,384
2
votes
1
answer
46
views
+50
Android ContentObserver occasionally fails to find call log entry after call ends (5-10% failure rate)
Android ContentObserver occasionally fails to find call log entry after call ends (5-10% failure rate)
I'm using a ContentObserver to monitor call log changes and retrieve call duration immediately ...
- 95.7k
-1
votes
3
answers
118
views
+500
Android Maui App gives "The RuntimeIdentifier 'android-arm' is invalid" when publishing
In order to get my Maui app to work on existing Android phones, I added the following to my .csproj file:
<RuntimeIdentifiers>android-arm;android-arm64;android-x86;android-x64</...
- 2,765
Recommended answers
View all recommended answersThese answers have been recommended
-1
votes
2
answers
37
views
How to create custom Generic Subscriber with Combine?
Here is my CustomSubscriber. All I want to achieve is to replace build-in .sink with my own one. Just to better understand how it works under the hood.
class CustomSubscriber<Input, Failure>: ...
Answer
First, your subscriber should request elements from the publisher, func receive(subscription: any Subscription) { self.subscription = subscription subscription.request(.unlimited) // assuming ...
0
votes
1
answer
37
views
Where using Record Publisher with Combine would be useful?
I am trying to understand Record Publisher.
Here is an example to better understand the case:
var subscriptions = [AnyCancellable]()
let pub = Record<Int, Never>(output: [1, 101, 102, 1001, 1002]...
Answer
You are expected to do this "recording" manually. If the recording is synchronous, you can use init(record:). If the recording is asynchronous, you can create a Record.Recording and call ...
0
votes
1
answer
37
views
Can an Android app access the camera in the background?
can I use the camera occasionally by running my app in the background 24/7 with permission from the user? Does Android currently allow this? I did some research on the internet but I couldn't find a ...
- 94.1k
Answer
Nothing in Android works 24/7. The entire OS is built to not allow that. Background services die in 2 minutes or so. Foreground services last longer, but will still eventually be killed by the ...
View answer
- 94.1k
0
votes
1
answer
51
views
Android D8 error after upgrading to SDK 35
I'm trying to update to SDK 35 and I'm getting this error.
Error in /Users/xxx/Library/Android/sdk/platforms/android-35/android.jar:java/lang/Boolean.class:
java.lang.NullPointerException
AGPBI: {&...
- 201k
Answer
As per the Minimum version of tools for Android API level, the highest supported API level for the AGP 7.2.2 that you are using is API 33. As explained there: Using lower versions of Android Studio ...
0
votes
1
answer
25
views
Accessing files present in assets directory on main thread
Is it ok to access the files present in assets folder on main thread
**NOTE: ** The File size is more than 5 mb
when searching on web i get to know that accessing files from assets folder is faster so ...
Answer
Is it ok to access the files present in assets folder on main thread All disk and network I/O should be performed on background threads, so as not to block the main application thread (which powers ...
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 ...
- 379
6425
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 ...
- 5,075
2749
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
785
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
13
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 ...
- 392
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