xamarin.android

问题 There is a possibility to use C# library with Mono for Android from Java code? It's possible to do it from Objective-C to C# (MonoTouch) with the "--xcode" flag in the mtouch command. But there is an equivalent in Mono for Android? And there is a reasons to do it? thanks! Gwennin 回答1: [Is it possible to] use C# library with Mono for Android from Java code? Yes. Every Java.Lang.Object subclass has an Android Callable Wrapper generated at build time. The Android Callable Wrapper is present to

问题 I have a stream which is the result of taking a photo. I want to save that photo to the users Gallery. I have tried all manner of things but nothing takes... The class I am saving is a plain C# class - it does not inherit form any android types but that could be done if necessary (to fire an intent perhaps - though I tried this and it ended up another rabbit hole) I have tried this: try{ using (FileStream fs = new FileStream(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) +

问题 I need to write an application in mono for android(Android+c#.net) to simulate steady cpu usage for certain duration(eg:30%,50%,70%) for 2 sec. I refered below link Simulate steady CPU load and spikes here i can able to steady the system cpu but the same operation not able to do in Android os. Any help can be helpful. Thanks in advance. 回答1: I made a sample project which seems to work fine on my Samsung Galaxy S2 and in the Emulator. https://github.com/Cheesebaron/MonoDroid.CPULoader It just

问题 Is there a way to create a global error handler for MonoDroid? My debugger is broken so I need a way to see the exception info while the application crashes. 回答1: It seems that AndroidEnvironment.UnhandledExceptionRaiser is what you're looking for: //that's a dirty-code example, do not use as-is! :) AndroidEnvironment.UnhandledExceptionRaiser += (sender, args) => { File.AppendAllText("tmp.txt", args.Exception.ToString()); }; 回答2: Most (all?) unhandled exceptions should end up in the Android

问题 I am developing an Android app in Visual Studio. In the Android SDK manager, all API's from API level 23 (Android 6.0) to API level 25 (Android 7.1) are installed. But when I open the project properties in Visual Studio, the "Compile using Android version" option is showing apis only till 23(Android 6.0). I want to target 7.1 as most of the smartphones will now have it. There are another problem if I go with Android 6.0. Some packages like Xamarin.Firebase.Messaging fails to install with the

问题 im really stuck right now and im quite new to Xamarin. I use Xamarin Forms to develop an App with speech recognition. I created just a simple UI with a button and an entry-box. Working: Press button and show popup with speech recognition read the spoken words into a var Not Working: pass the data back to the Xamarin Forms UI (entry) StartPage.xaml.cs: private void BtnRecord_OnClicked(object sender, EventArgs e) { WaitForSpeechToText(); } private async void WaitForSpeechToText() { EntrySpeech

问题 I'm trying to build a Monogame view inside a RelativeLayout from my MvvmCross monodroid Activity view. An android Activity inherits from Microsoft.Xna.Framework.AndroidGameActivity to be able to run a Monogame inside a RelativeLayout (working). My MvvmCross Activity inherits from MvxBindingActivityView(working). So, I need a way to run the game and bind some datas within the same activity. Thanks in advance for your help. 回答1: Loosely speaking, you can translate any Activity to an MvxActivity

问题 I'm trying to use proguard with Xamarin. So I enabled it in project options (checked Enable ProGuard ), and I created a file proguard.cfg in Properties, (as new Text file, is it right?) and checked the BuildAction -> ProguardConfiguration The proguard file contains only a -keep configuration, with a comment. Whether I leave or remove the comment, I always get a parse error on line 1 : # test comment -keep class !android.support.v7.view.menu.**, !android.support.design.internal.NavigationMenu,

问题 I'm trying to use proguard with Xamarin. So I enabled it in project options (checked Enable ProGuard ), and I created a file proguard.cfg in Properties, (as new Text file, is it right?) and checked the BuildAction -> ProguardConfiguration The proguard file contains only a -keep configuration, with a comment. Whether I leave or remove the comment, I always get a parse error on line 1 : # test comment -keep class !android.support.v7.view.menu.**, !android.support.design.internal.NavigationMenu,

问题 I am using RecyclerView for showing my list. I implement Swipe to dismiss on the RecyclerView with ItemTouchHelper. The underlying layout is implemented in OnchildDraw method by using canvas. Now I have a problem: I want to set onclick on my icon. By clicking on the icon, I want to do some functions. Here is My class: public class ItemTouchHelperCallback : ItemTouchHelper.SimpleCallback { private ContactSearchedResultAdapter _adapter; private RecyclerView _mRecyclerView; private int