I'm having a bit of an issue with the Xamarin.Forms.Maps and the exceptions are not propagated up into the debugger in a meaningful way to help me diagnose the issue.
I can get it to work, everytime I reinstall Visual Studio. It will work a couple times then eventually it will crash 100% of the time as long as the Map item is in the xaml. I am not remaking the project between running, just reinstalling Visual Studio. I'm running Visual Studio 17 Community.
The error just says:
'Your app has entered a break state, but there is no code to show because all threads were executing external code (typically system or framework code).'
I have a valid API Key, and even if I comment out ALL code relating to the Map it eventually happens other than the Xaml that will create it. If I reinstall visual studio I can manipulate the map the first few times I invoke the debugger before it fails.
I wish I could give more information, but I'm pretty new to Xamarin development so I'm a bit unsure why reinstalling Visual Studio fixes the issue, temporarily. Any insight would be much appreciated, as I've spent many hours trying to diagnose and reinstall, but have no idea what the issue could be given the error doesn't really say much of anything. I'd love to provide more information if someone has more ideas for me to check out.
In general, it also fails to deploy eventually also : / which is why I tried an install originally. I'm not sure if this is related.
MainPage.xaml.cs
using System;
using System.Linq;
using System.Text;
using Xamarin.Forms;
using Plugin.Geolocator;
using System.Threading.Tasks;
using System.Collections.Generic;
using Plugin.Geolocator.Abstractions;
namespace LawnDroneCompanion
{
public partial class MainPage : ContentPage
{
private List<Position> RecordedPositions = new List<Position>();
public MainPage()
{
InitializeComponent();
}
private void StopGeoLocatorListening()
{
BeginTrackingRoute.Text = "Begin Tracking";
BeginTrackingRoute.BackgroundColor = Color.Green;
CrossGeolocator.Current.StopListeningAsync();
}
private async void StartGeoLocatorListening(object obj, EventArgs e)
{
if (CrossGeolocator.Current.IsListening)
{
StopGeoLocatorListening();
return;
}
BeginTrackingRoute.Text = "Stop Tracking";
BeginTrackingRoute.BackgroundColor = Color.Red;
CrossGeolocator.Current.DesiredAccuracy = 10;
///This logic will run on the background automatically on iOS, however for Android and UWP you must put logic in background services. Else if your app is killed the location updates will be killed.
await CrossGeolocator.Current.StartListeningAsync(TimeSpan.FromSeconds(1), 1, true, new Plugin.Geolocator.Abstractions.ListenerSettings
{
ActivityType = Plugin.Geolocator.Abstractions.ActivityType.Other,
AllowBackgroundUpdates = true,
DeferLocationUpdates = true,
DeferralDistanceMeters = 1,
DeferralTime = TimeSpan.FromSeconds(1),
ListenForSignificantChanges = true,
PauseLocationUpdatesAutomatically = false
});
Position StartLocation = await CrossGeolocator.Current.GetLastKnownLocationAsync();
//MyMap.MoveToRegion(Xamarin.Forms.Maps.MapSpan.FromCenterAndRadius(new Xamarin.Forms.Maps.Position(StartLocation.Latitude, StartLocation.Longitude), Xamarin.Forms.Maps.Distance.FromMiles(0.2)));
CrossGeolocator.Current.PositionChanged += GeoLocateHandler;
}
private void DrawNewLocation(Plugin.Geolocator.Abstractions.Position position)
{
if(RecordedPositions.Count > 1000)
{
return;
}
RecordedPositions.Add(position);
//MyMap.MoveToRegion(Xamarin.Forms.Maps.MapSpan.FromCenterAndRadius(new Xamarin.Forms.Maps.Position(position.Latitude, position.Longitude), MyMap.VisibleRegion.Radius));
}
private void GeoLocateHandler(object sender, PositionEventArgs e)
{
Device.BeginInvokeOnMainThread(() =>
{
DrawNewLocation(e.Position);
});
}
}
}
MainPage.xaml
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:LawnDroneCompanion"
xmlns:maps="clr-namespace:Xamarin.Forms.Maps;assembly=Xamarin.Forms.Maps"
x:Class="LawnDroneCompanion.MainPage">
<ContentPage.Content>
<StackLayout>
<StackLayout VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
<!-- If I comment this out it works, this comment isn't in my real code -->
<maps:Map x:Name="MyMap" IsShowingUser="True" MapType="Hybrid"/>
</StackLayout>
<Button x:Name="BeginTrackingRoute" HorizontalOptions="FillAndExpand" Text="Begin Tracking" Clicked="StartGeoLocatorListening" BackgroundColor="Green" TextColor="WhiteSmoke" BorderRadius="0"/>
</StackLayout>
</ContentPage.Content>
</ContentPage>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.LawnDroneCompanion" android:installLocation="auto">
<uses-sdk android:minSdkVersion="25" />
<!-- Google Maps for Android v2 requires OpenGL ES v2 -->
<uses-feature android:glEsVersion="0x00020000" android:required="true" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<!-- Allow the application to access Google web-based services. -->
<!-- Google Maps for Android v2 will cache map tiles on external storage -->
<application android:label="LawnDroneCompanion.Android">
<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="{IMAGINE-MY-KEY-HERE}" />
<meta-data android:name="com.google.android.gms.version" android:value="#integer/google_play_services_version" />
</application>
</manifest>
Related
I have created a dummy maui app. I managed to get the package name with the following code after following App information
#page "/"
<h1>Hello, world!</h1>
Welcome to your new app.
<SurveyPrompt Title="How is Blazor working for you?" />
<ul>
<li>Name: #name</li>
<li>Package: #package</li>
<li>Version: #version</li>
<li>Build: #build</li>
</ul>
#code {
private string name = AppInfo.Current.Name;
private string package = AppInfo.Current.PackageName;
private string version = AppInfo.Current.VersionString;
private string build = AppInfo.Current.BuildString;
protected override async Task OnInitializedAsync()
{
}
}
As you can see from the following image this does work it displays my android application information. but ...
My question is how to configure this Package name shows as com.companyname.blazortest. I would like to be able to supply my company name
There is no appsettings.json file, its not in the AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
<application android:allowBackup="true" android:icon="#mipmap/appicon" android:roundIcon="#mipmap/appicon_round" android:supportsRtl="true"></application>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
Im a bit stumped as to where this is configured.
You can change it manually in your .csproj file
<!-- App Identifier -->
<ApplicationId>com.companyname.app.maui</ApplicationId>
or you can change it in project properties
or if you want to change it in android project only you can do it under Android section (it will change your manifest file)
When I try to ping a device from my MAUI App built for Android I get a SocketException(Permission Denied). When i build for Windows it works just fine.
I can not find any Permission other than the ones I already have that could be required. Does anyone know what could be causing this?
Tested with Android 11 and Android 12 on physical devices.
EDIT:
Network-connection works fine through HttpClient.
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
<uses-sdk android:minSdkVersion="21" android:targetSdkVersion="31" />
<application android:allowBackup="true" android:icon="#mipmap/appicon" android:roundIcon="#mipmap/appicon_round" android:supportsRtl="true"></application>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
Code:
var sender = new System.Net.NetworkInformation.Ping();
var options = new System.Net.NetworkInformation.PingOptions();
options.DontFragment = true;
string data = "testdata";
byte[] buffer = Encoding.ASCII.GetBytes(data);
int timeout = 100;
PingReply reply = sender.Send(address, timeout, buffer, options);
Exception:
System.Net.Sockets.SocketException 'Permission denied'
I'm running into a very odd issue in my Xamarin Forms app. I am trying to take a picture in my app, then use OCR to read the text, but I'm struggling to get permissions to be granted for WRITE_EXTERNAL_STORAGE. I now have to declare WRITE_EXTERNAL_STORAGE twice in my AndroidManifest in order for the app to allow me to request storage permissions or to access storage, once as a self-closing tag and once with explicit tag:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
If either is removed (leaving just one version of WRITE_EXTERNAL_STORAGE), I get the following exception when trying to request permissions for external storage or when trying to capture a picture: "You need to declare using the permission: android.permission.WRITE_EXTERNAL_STORAGE in your AndroidManifest.xml"
This ONLY affects WRITE_EXTERNAL_STORAGE...all other declared permissions (using self-closing tags) in the manifest work appropriately. It's just the write storage permission that needs this "hack."
This issue occurs on emulated devices (debug mode) AND on physical devices (via Play Store alpha track) when only one instance of the permission is listed. When debugging with both lines in the manifest, the app is able to obtain permissions to storage successfully and I can take the picture as expected. The Play Store will not accept submissions with duplicate lines in the manifest, so I am unable to submit to the store using this "hack."
This is a full copy of my AndroidManifest (without PII), including the duplicate lines I have to include in order for storage permissions to be granted successfully when debugging:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="myapp" android:versionName="3.2.2" android:installLocation="auto" android:versionCode="59">
<application android:theme="#android:style/Theme.Material.Light" android:icon="#drawable/Icon120" android:label="MyApp">
<provider android:name="android.support.v4.content.FileProvider" android:authorities="${applicationId}.fileprovider" android:exported="false" android:grantUriPermissions="true">
<meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="#xml/file_paths"></meta-data>
</provider>
</application>
<uses-feature android:name="android.hardware.camera" android:required="true" />
<uses-sdk android:minSdkVersion="21" android:targetSdkVersion="29" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.WRITE_CONTACTS" />
</manifest>
I also have the following line in my AssemblyInfo.cs file:
[assembly: UsesPermission(Android.Manifest.Permission.WriteExternalStorage)]
When I try to request permissions via Xamarin.Essentials or to access the camera to tke a picture via Xamarin.Essentials or CrossMedia, the app blows up with the above exception, claiming I am missing the WRITE_EXTERNAL_STORAGE permission, despite it being in the manifest once (either self-closed or with explicit tag). Any of these lines executing will result in the exception and all lines work when both entries for WRITE_EXTERNAL_STORAGE are present:
var permissionStatus = await Xamarin.Essentials.Permissions.RequestAsync<Xamarin.Essentials.Permissions.StorageWrite>();
var photo = await Xamarin.Essentials.MediaPicker.CapturePhotoAsync(new Xamarin.Essentials.MediaPickerOptions { Title = DateTime.Now.ToString("G") + ".jpg" });
var file = await CrossMedia.Current.TakePhotoAsync(new StoreCameraMediaOptions { Name = DateTime.Now.ToString("G") + ".jpg" });
I have tried updating all of my NuGet packages and am now on the latest versions of frameworks for the app (Xamarin Forms v5 and Xamarin.Essentials 1.6.1) but this issue still persists. I also tried completely deleting the manifest and restarting from scratch, but the same "hack" is still needed.
Has anyone run into this or have any idea of how this can be fixed?
Thank you in advance!
To anyone who has this issue, the solution was to remove all references to and uninstall the NuGet package for HockeySDK.Xamarin. As soon as I removed everything related to this, the issue resolved itself and I no longer had the problem with the manifest
I am desiring addition to my Universal Windows Platform software the ability for it to shut-down its host machine after invocation of it by 1 button-click, however, 0 methods that I have tried thus far have operated:
I have attempted to instruct Windows to shut-down, but shutdown /s /t 120 is not able to operate, specifically after invocation by my application.
Therefore, I attempted uage of native C# code. However, usage of this has informed me that it has not been permitted to invoke shutdown:
ShutdownManager.BeginShutdown(Windows.System.ShutdownKind.Shutdown, TimeSpan.FromSeconds(120));
I have used many methods, but I am not able to remediate this problem.
Relevant files
MainPage.xaml.cs
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using System;
using Windows.System;
// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=402352&clcid=0x409.
// Delete the extra namespaces when the application is complete.
namespace Shutdown_Roulette
{
/// <summary>
/// An empty page that can be used on its own or navigated to within a Frame.
/// </summary>
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
}
private void Button_click(object sender, RoutedEventArgs e)
{
ShutdownManager.BeginShutdown(Windows.System.ShutdownKind.Shutdown, TimeSpan.FromSeconds(120));
}
}
}
Package.appxmanifest
<?xml version="1.0" encoding="utf-8"?>
<Package
xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
xmlns:iot="http://schemas.microsoft.com/appx/manifest/iot/windows10"
IgnorableNamespaces="uap mp iot">
<Identity
Name="7eb73f1e-b159-4fd0-aab9-4158e57ba08a"
Publisher="CN=rokeb"
Version="1.0.0.0" />
<mp:PhoneIdentity PhoneProductId="7eb73f1e-b159-4fd0-aab9-4158e57ba08a" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
<Properties>
<DisplayName>Shutdown Roulette</DisplayName>
<PublisherDisplayName>Master Roke Julian Lockhart Beedell</PublisherDisplayName>
<Logo>Assets\StoreLogo.png</Logo>
</Properties>
<Dependencies>
<TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.0.0" MaxVersionTested="10.0.0.0" />
</Dependencies>
<Resources>
<Resource Language="x-generate"/>
</Resources>
<Applications>
<Application Id="App"
Executable="$targetnametoken$.exe"
EntryPoint="Shutdown_Roulette.App">
<uap:VisualElements
DisplayName="Shutdown Roulette"
Square150x150Logo="Assets\Square150x150Logo.png"
Square44x44Logo="Assets\Square44x44Logo.png"
Description="Shutdown Roulette"
BackgroundColor="transparent">
<uap:DefaultTile Wide310x150Logo="Assets\Wide310x150Logo.png" ShortName="Shutdown Roulette">
</uap:DefaultTile >
<uap:SplashScreen Image="Assets\SplashScreen.png" />
</uap:VisualElements>
</Application>
</Applications>
<Capabilities>
<iot:Capability Name="systemManagement"/></Capabilities>
</Package>
Please do note that I am wanting to use this command on Windows 10, rather than Windows 10 IoT; I merely am attempting to use those commands because they are the only other way I have been able to conceive of invocation of this without reliance upon either PowerShell, Python or the Windows Command Processor.
According to the description of ShowdownManager, it needs the support of IOT SDK, which means it is a platform-limited API (only valid on IOT devices).
In Windows 10 desktop devices, UWP does not have the permission to turn off the device.
I am attempting to use this plugin to open an android image picker, however it errors when launched.
The calling script:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using LukeWaffel.AndroidGallery;
public class LoadImageWithMagic : MonoBehaviour {
public Image image;
// Use this for initialization
void Start () {
}
// Update is called once per frame
void Update () {
}
public void OpenGallery() {
Debug.Log ("It clicked");
AndroidGallery.Instance.OpenGallery (GalleryCallback);
}
public void GalleryCallback() {
image.material.mainTexture = AndroidGallery.Instance.GetTexture ();
AndroidGallery.Instance.ResetOutput ();
}
}
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="com.unity3d.player"
xmlns:tools="http://schemas.android.com/tools"
android:installLocation="preferExternal"
android:versionCode="1"
android:versionName="1.0">
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<supports-screens
android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:xlargeScreens="true"
android:anyDensity="true"/>
<application
android:theme="#style/UnityThemeSelector"
android:icon="#drawable/app_icon"
android:label="#string/app_name"
android:debuggable="true">
<activity android:name="com.unity3d.player.UnityPlayerActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data android:name="unityplayer.UnityActivity" android:value="true" />
</activity>
<activity android:name= "com.lukewaffel.androidgallery.Gallery"></activity>
</application>
</manifest>
Error from logcat:
08-25 09:53:09.029 3458-3474/com.TNOAB.FindMyPet I/Unity: It clicked
(Filename: ./artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)
08-25 09:53:09.036 3458-3474/com.TNOAB.FindMyPet I/Unity: [Singleton] An instance of LukeWaffel.AndroidGallery.AndroidGallery is needed in the scene, so '(singleton) LukeWaffel.AndroidGallery.AndroidGallery (UnityEngine.GameObject)' was created with DontDestroyOnLoad.
(Filename: ./artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)
08-25 09:53:09.060 1485-1737/system_process I/ActivityManager: START u0 {cmp=com.TNOAB.FindMyPet/com.lukewaffel.androidgallery.Gallery} from uid 10061 on display 0
08-25 09:53:09.082 3458-3474/com.TNOAB.FindMyPet I/Unity: AndroidJavaException: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.TNOAB.FindMyPet/com.lukewaffel.androidgallery.Gallery}; have you declared this activity in your AndroidManifest.xml?
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.TNOAB.FindMyPet/com.lukewaffel.androidgallery.Gallery}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1777)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1501)
at android.app.Activity.startActivityForResult(Activity.java:3745)
at android.app.Activity.startActivityForResult(Activity.java:3706)
at android.app.Activity.startActivity(Activity.java:4016)
at android.app.Activity.startActivity(Activity.java:3984)
at com.lukewaffel.androidgallery.UnityBinder.OpenGallery(UnityBinder.java:12)
at com.unity3d.player.UnityPlayer.nativeRender(Native Method)
at com.unity3d.player.UnityPlayer.c
It appears that the issue is Unity is prepending my package to the package of the plugin, causing it to not be found. I have attempted to change my package to the package of the plugin and it still had the same error.
I have tried reinstalling the app and still cannot get the gallery to open.
I have discovered that the issue was all of the plugin files were placed into a subdirectory, so unity could not find the AndroidManifest.xml. After moving all of the items out of the subdirectory, the Gallery opened.
As a note to anyone copying the above code, I then discovered an unrelated error, image.material.mainTexture = AndroidGallery.Instance.GetTexture (); should be image.sprite = AndroidGallery.Instance.GetSprite ();