I created a single view application in Xamarin Studio, without making any changes to it, I deploy it onto an iPhone 5 running iOS 7.0.4.
Instruments then reported a dozen memory leaks after the app launched:
There are no interactions with the view whatsoever. The stack traces all look similar to this
Please, can somebody tell me why this is?
This is a bug we've already fixed internally, the fix will be included in Xamarin.iOS 7.0.7.
Related
I'm currently trying to debug an iOS application (created with Xamarin.Forms) with VS for Mac (also tested through VS2019 Enterprise on Windows). Unfortunately, the debugging process is not started successfully. It stops without any exception or error report (except "Application 'com.XYZ.MyApp' terminated." which is not helpful at all). This happens with the simulator and the device debugging.
When debugging it shows the launch screen and from time to time the following page. Then the debugging crashes without any report. This may be caused by an asyncronous process. However, there is no information in the log files.
The same app can be successfully debugged with the andriod simulator. Moreover, a generally similiar application can be debugged under iOS.
Is there any possibility to get a more detailed error report that shows why the debugger is closing?
Edit: I just created a TestFlight version which works pretty stable and pretty well... So I have no clue anymore why the debugging is not working... Is it maybe because I had Xcode 11 beta installed for a short time to test iOS 13 on my device with my apps? I uninstalled Xcode 11 after the iOS update but is there a chance that this causes problems with the Xcode 10 installation?
I am trying to develop android and iOS application using xamarin.forms. And already completed the main part that includes Canvas drawing. For that, I have used Skiasharp, to perform operations on bitmap images.
Now, in android,
1. If I try to dispose bitmaps that I initialized before I get SIGSEGV fatal error. (I think this issue is not OS specific)
2. When I continuously run my app for 20-22 minutes, app crashes suddenly.
And in iOS,
my iphone gets hanged when I run my app for long time. And it doesn't start until I uninstall app from iFunBox in my pc.
I wanted to ask if there are ways in xamarin.forms or in native projects to find out where my memory is leaking.
How can I know how much memory of RAM is actually being used at the moment ?
Thank you
For Android, you can use the Android Debug Monitor tool. This is a tool that is installed as part of the Android SDK.
Below is the URL for more information:
https://www.codeproject.com/Articles/798462/Diagnosing-Memory-Usage-in-a-Xamarin-Android-Appli
For iOS, you can try to use the native XCode Instrument.
Below is the URL for more information:
https://developer.xamarin.com/guides/ios/deployment,_testing,_and_metrics/using_instruments_to_detect_native_leaks_using_markheap/
Also, Below is a useful article that talk about Xamarin.Forms Memory management.
Hopefully it will be helpful.
https://igorelikblog.wordpress.com/2016/07/08/xamarin-form-memory-management/
We have a Xamarin.Forms app for iOS and Android that we have in the stores for some months now. We develop with VS 2017. For testing the iOS-version, we use TestFlight.
Everything worked pretty well, until mid-april when we wanted to test a new release via TestFlight:
We installed the iOS-App on our test devices via TestFlight, and now on our test devices the app closes down right after the splash screen without generating a crash report (we use HockeyApp).
The app works fine though on the iOS-simulator and when being published directly on a device (iPad) via VS.
We found out that the problem is the update of Xamarin.Forms from version 2.3.3.180 to version 2.3.4.231 or later.
We would like to use latest version of Xamarin.Forms. Does anyone have the same issue and did you find a solution?
We just found the solution for this problem:
We use a custom font for our app and changed the font of the navigation bar in the AppDelegate.FinishedLaunching method by using UINavigationBar.Appearance.SetTitleTextAttributes.
This caused the iOS version of our app to crash when distributing via TestFlight. We removed the code to change the font and now we can publish the app again.
For a live/testing Universal Windows Platform(UWP) application how I can get crash reports? Is there any SDK for UWP, Like for iOS/Android platform Crashlytics provide symbolicated report about an application crash.
Following Details I want in a crash report
1. Device Details - like Device Name, Model etc
2. OS Version
3. File Name - In which app crash
4. Line Number - In which app crash
5. Parents Method - Parents Method of method in which app crash
6. Other threads details
I want something similar to Crashlytics SDK, like for iOS. Here the screenshot one of my iOS application which contains crash details
I suggest that you may use Hockeyapp, you may merge Hockeyapp SDK to your app, it will help you collect crash report and some other things. HockeySDK.UWP is in process now, you may use HockeySDK.WINRT instead. Here is the link.
Hockeyapp for UWP is in "preseason" so currently in development but available for users already.
just sign up for Hockeyapp with a free accound and apply for "preseason" you'll get access to UWP and other beta features in a few days. (at least I received access quite fast on multiple accounts)
when you have access it's just adding this nuget package:
https://www.nuget.org/packages/HockeySDK.UWP
Microsoft Application Insights also has some good functionality for this but it's deprecated since last month where Microsoft tells you to move to Hockeyapp
I have a Windows 8.1 universal app written using javascript and would like to install application insights to capture telemetry data.
I've followed the instructions here and installed the Application Insights for Javascript Apps nuget package in my project.
It's partially working. I see page views coming through and some (but not all) of the exceptions I'm tracking using calls to appInsights.trackException. I don't get any crash reports.
Is there something I'm missing that's preventing crash reports and exceptions from being tracked? Is this the correct way to setup Application Insights for Windows 8.1 javascript apps?
Any help would be greatly appreciated. There doesn't seem to be much information out there on this scenario.
We don't support JavaScript for devices. Sorry.