Xamarin.Android : Google Play app target level error solution
This content has 4 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.If you are uploading an application to the Google Play, and it gives the following error: You have to change the target framework and the target android version in your androidmanifest.xml or in the UI editor of the manifest. To change it, set the Target Framework in the properties tab of your android application Then Navigate to Android Manifest option, and set target android version If you are re archive your application, it will upload successfully.
Xamarin.Android: Missing aapt.exe
This content has 4 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.When trying to deploy an application to simulator or device, Visual Studio gives the following error: To solve this problem you sould go to Visual Studio’s Tools then Android and select SDK Manager option. It will give an error dialog, that the SDK tool files are corrupted. Click repair. The mentioned batch command in the error message is deprecated by the way.
Xamarin.Forms: Bypass SSL Certificate validation on Android
This content has 4 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.Disclaimer: Bypassing SSL Certificate validation in production releases are not recommended. It can make your application vulnerable by hackers and reverse engineers, and your users will be unprotected from the bad guys. Consider to use the following codes with compile directives. But in the other hand, it can be handful to just ignore the certification errors in development enviroment. Local machines has self signed certificates, and it is easier to just bypass the validation method, rather than set the self signed certificate acceptance in our client applications. In Xamarin.Android (Lower than Android 10) and Xamarin.iOS, use the ServicePointManager in order to make your own certificate validator algorithm. The code below just accepts every cert. To bring Android 10 also to work, construct your HttpClient with the following constructor:
[Xamarin.Android]: Cleartext HTTP traffic to not permitted
This content has 4 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.If your Android application gives the following error, when trying to use a HttpClient: Set usesClearTraffic property to true in the AndroidManifest.xml: The restriction was introduced in Android 8. More explanation: https://koz.io/android-m-and-the-war-on-cleartext-traffic/
Xamarin Android: Dismiss lock screen or show activity on lock screen
This content has 4 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.To gain an Activity to be showed on the lock screen, or bypass the phone’s lock screen (aka Keyguard) for important notification handling, for example an Incoming VOIP call, you need to do the following: Set the permission for disabling keyguard. Add the following permission to the AndroidManifest.xml: Add flags to the Activity’s Window in order to show the activity on the lock screen, or to bypass the lock screen. Dismiss the keyguard if needed. (CrossCurrentActivity plugin is used to get the current activity):
Hi, I am András,
I am a seasoned software engineer from Budapest, Hungary with a strong focus on mobile app development using .NET MAUI and Xamarin.Forms. My expertise also extends to website building for my happy customers and other complex system designing. I am passionate about developing well-organized, maintainable software solutions.
