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GH-480: Implement Wifi signal strength #616

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merged 25 commits into from
Dec 11, 2018
Merged

GH-480: Implement Wifi signal strength #616

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376843b
Small main thread optimization
Aug 9, 2018
faea1bf
redo commit
Aug 9, 2018
ca4e6e9
Merge branch 'master' of https://github.com/Mrnikbobjeff/Essentials
Aug 9, 2018
036567a
Merge branch 'master' of https://github.com/xamarin/Essentials into x…
Aug 10, 2018
024c5bc
Merge branch 'xamarin-master'
Aug 10, 2018
1a318a6
Merge pull request #7 from xamarin/master
Aug 13, 2018
4597129
Merge pull request #8 from xamarin/master
Nov 10, 2018
4c721d3
Udated docs
Nov 10, 2018
52f6278
Revert "Udated docs"
Nov 10, 2018
03ce75a
Initial connectivity commit
Nov 10, 2018
ffc478a
Revert "Initial connectivity commit"
Nov 10, 2018
0842743
Initial Connectivity commit
Nov 10, 2018
302141a
Added docs
Nov 10, 2018
c6d9cd3
Updated docs
Nov 10, 2018
e37b0db
Updated Permissions, code changes as request by jamesmontemagno
Nov 11, 2018
b8a3aa9
added docs
Nov 11, 2018
7d8ab82
Updated docs
Nov 12, 2018
6c331aa
mattleibow requested changes
Nov 12, 2018
29fa2da
Update DeviceTests/DeviceTests.Android/Properties/AndroidManifest.xml
Redth Nov 20, 2018
828aed4
Update Xamarin.Essentials/Connectivity/Connectivity.ios.cs
Redth Nov 20, 2018
03f3620
Rename WiFi -> Wifi
Redth Nov 29, 2018
e5e6e6a
Rename WiFi -> Wifi
Redth Nov 29, 2018
bf854ec
Merge branch 'master' into feature/GH-480
Nov 29, 2018
aa0419e
Merge branch 'master' into feature/GH-480
jamesmontemagno Nov 29, 2018
20a58f8
Merge branch 'master' into feature/GH-480
jamesmontemagno Dec 10, 2018
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3 changes: 2 additions & 1 deletion DeviceTests/DeviceTests.Android/Properties/AndroidManifest.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -9,5 +9,6 @@
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<application android:label="@string/app_name" android:icon="@mipmap/ic_launcher" android:roundIcon="@mipmap/ic_launcher_round" android:theme="@style/MainTheme"></application>
</manifest>
</manifest>
33 changes: 14 additions & 19 deletions Samples/Samples.Android/Properties/AndroidManifest.xml
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@@ -1,22 +1,17 @@
<?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.xamarin.essentials" android:installLocation="auto">
<uses-sdk android:minSdkVersion="19" android:targetSdkVersion="27" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.BATTERY_STATS" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-feature android:name="android.hardware.location" android:required="false" />
<uses-feature android:name="android.hardware.location.gps" android:required="false" />
<uses-feature android:name="android.hardware.location.network" android:required="false" />
<application android:label="@string/app_name"
android:icon="@mipmap/ic_launcher"
android:roundIcon="@mipmap/ic_launcher_round"
android:theme="@style/MainTheme"
android:fullBackupContent="@xml/my_backup_rules">

</application>
<uses-sdk android:minSdkVersion="19" android:targetSdkVersion="27" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.BATTERY_STATS" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-feature android:name="android.hardware.location" android:required="false" />
<uses-feature android:name="android.hardware.location.gps" android:required="false" />
<uses-feature android:name="android.hardware.location.network" android:required="false" />
<application android:label="@string/app_name" android:icon="@mipmap/ic_launcher" android:roundIcon="@mipmap/ic_launcher_round" android:theme="@style/MainTheme" android:fullBackupContent="@xml/my_backup_rules"></application>
</manifest>
1 change: 1 addition & 0 deletions Samples/Samples/View/ConnectivityPage.xaml
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Expand Up @@ -15,6 +15,7 @@
<StackLayout Padding="12,6,12,12" Spacing="6">
<Label Text="Connectivity State:" FontAttributes="Bold" />
<Label Text="{Binding NetworkAccess, StringFormat='NetworkAccess: {0}'}" />
<Label Text="{Binding SignalStrength, StringFormat='Signal strength (for wifi): {0}'}" />
<Label Text="{Binding ConnectionProfiles, StringFormat='ConnectionProfiles: {0}'}" />
</StackLayout>
</ScrollView>
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19 changes: 5 additions & 14 deletions Samples/Samples/ViewModel/ConnectivityViewModel.cs
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Expand Up @@ -4,23 +4,13 @@ namespace Samples.ViewModel
{
public class ConnectivityViewModel : BaseViewModel
{
public ConnectivityViewModel()
{
}

public string NetworkAccess =>
Connectivity.NetworkAccess.ToString();

public string SignalStrength => Connectivity.WifiSignalStrength.ToString();

public string ConnectionProfiles
{
get
{
var profiles = string.Empty;
foreach (var p in Connectivity.ConnectionProfiles)
profiles += "\n" + p.ToString();
return profiles;
}
}
public string Profiles =>
string.Join("\n", Connectivity.ConnectionProfiles);

public override void OnAppearing()
{
Expand All @@ -40,6 +30,7 @@ void OnConnectivityChanged(object sender, ConnectivityChangedEventArgs e)
{
OnPropertyChanged(nameof(ConnectionProfiles));
OnPropertyChanged(nameof(NetworkAccess));
OnPropertyChanged(nameof(SignalStrength));
}
}
}
38 changes: 38 additions & 0 deletions Xamarin.Essentials/Connectivity/Connectivity.android.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
using System.Threading.Tasks;
using Android.Content;
using Android.Net;
using Android.Net.Wifi;
using Android.OS;
using Debug = System.Diagnostics.Debug;

Expand All @@ -21,6 +22,43 @@ static void StartListeners()
Platform.AppContext.RegisterReceiver(conectivityReceiver, new IntentFilter(ConnectivityManager.ConnectivityAction));
}

static SignalStrength PlatformSignalStrength()
{
Permissions.EnsureDeclared(PermissionType.WifiState);
try
{
var wifiManager = Platform.WifiManager;
if (wifiManager == null)
return SignalStrength.Unknown;

var info = wifiManager.ConnectionInfo;
if (info == null)
return SignalStrength.None;

var signalLevel = WifiManager.CalculateSignalLevel(info.Rssi, 5); // range 0 -> n-1
switch (signalLevel)
{
case 0:
return SignalStrength.None;
case 1:
return SignalStrength.Weak;
case 2:
case 3:
return SignalStrength.Fair;
case 4:
return SignalStrength.Strong;
default:
Debug.WriteLine($"Invalid signal strength encountered: {signalLevel}");
return SignalStrength.Unknown;
}
}
catch (Exception e)
{
Debug.WriteLine("Unable to get signal strength - do you have ACCESS_WIFI_STATE permission? - error: {0}", e);
return SignalStrength.Unknown;
}
}

static void StopListeners()
{
if (conectivityReceiver == null)
Expand Down
21 changes: 21 additions & 0 deletions Xamarin.Essentials/Connectivity/Connectivity.ios.cs
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@@ -1,5 +1,6 @@
using System;
using System.Collections.Generic;
using NetworkExtension;

namespace Xamarin.Essentials
{
Expand All @@ -13,6 +14,26 @@ static void StartListeners()
listener.ReachabilityChanged += OnConnectivityChanged;
}

static SignalStrength PlatformSignalStrength()
{
var doubleSignalStrength = new NEHotspotNetwork().SignalStrength;
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This allocation. I think it should be OK, but maybe wrap it in a using to dispose sooner?

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Yeah, I was worried about this as well. I was unable to decide whether to take the permanent memory hit and just lazy initialize a static NEHotspotNetwork which just sticks around forever once SignalStrength is used or allocate a new object on every call. This probably depends on the usage scenario as well, as if this were called in a rather tight loop or rather frequently would just add unnecessary memory pressure. If we decide to not cache the value we should definitely dispose the object ASAP to let i be destroyed on iOS.

if (doubleSignalStrength < 0.01d)
return SignalStrength.None;
var signalstrength = (int)Math.Round(doubleSignalStrength * 3);
switch (signalstrength)
{
case 0:
case 1:
return SignalStrength.Weak;
case 2:
return SignalStrength.Fair;
case 3:
return SignalStrength.Strong;
default:
return SignalStrength.Unknown;
}
}

static void StopListeners()
{
if (listener == null)
Expand Down
4 changes: 4 additions & 0 deletions Xamarin.Essentials/Connectivity/Connectivity.netstandard.cs
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Expand Up @@ -7,7 +7,11 @@ public static partial class Connectivity
static NetworkAccess PlatformNetworkAccess =>
throw new NotImplementedInReferenceAssemblyException();

static SignalStrength PlatformSignalStrength() =>
throw new NotImplementedInReferenceAssemblyException();

static IEnumerable<ConnectionProfile> PlatformConnectionProfiles =>

throw new NotImplementedInReferenceAssemblyException();

static void StartListeners() =>
Expand Down
13 changes: 12 additions & 1 deletion Xamarin.Essentials/Connectivity/Connectivity.shared.cs
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Expand Up @@ -9,12 +9,14 @@ public static partial class Connectivity
static event EventHandler<ConnectivityChangedEventArgs> ConnectivityChangedInternal;

// a cache so that events aren't fired unnecessarily
// this is mainly an issue on Android, but we can stiil do this everywhere
// this is mainly an issue on Android, but we can still do this everywhere
static NetworkAccess currentAccess;
static List<ConnectionProfile> currentProfiles;

public static NetworkAccess NetworkAccess => PlatformNetworkAccess;

public static SignalStrength WifiSignalStrength => PlatformSignalStrength();

public static IEnumerable<ConnectionProfile> ConnectionProfiles => PlatformConnectionProfiles;

public static event EventHandler<ConnectivityChangedEventArgs> ConnectivityChanged
Expand Down Expand Up @@ -65,6 +67,15 @@ static void OnConnectivityChanged(ConnectivityChangedEventArgs e)
}
}

public enum SignalStrength
{
Unknown = 0,
None = 1,
Weak = 2,
Fair = 3,
Strong = 4
}

public class ConnectivityChangedEventArgs : EventArgs
{
public ConnectivityChangedEventArgs(NetworkAccess access, IEnumerable<ConnectionProfile> connectionProfiles)
Expand Down
32 changes: 32 additions & 0 deletions Xamarin.Essentials/Connectivity/Connectivity.uwp.cs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using Windows.Devices.WiFi;
using Windows.Networking.Connectivity;

namespace Xamarin.Essentials
Expand All @@ -15,6 +17,36 @@ static void NetworkStatusChanged(object sender) =>
static void StopListeners() =>
NetworkInformation.NetworkStatusChanged -= NetworkStatusChanged;

static SignalStrength PlatformSignalStrength()
{
var signalStrength = NetworkInformation.GetConnectionProfiles()
.Where(profile => profile != null && profile.IsWlanConnectionProfile)
.Select(profile => profile.GetSignalBars())
.Where(signalBar => signalBar.HasValue)
.OrderBy(strength => strength)
.FirstOrDefault();

// Adding 1 to return value because 0 is Unknown and 1 is None. If we have a connection we receive at least 1 in return value
if (!signalStrength.HasValue)
return SignalStrength.Unknown;
switch (signalStrength.Value)
{
case 0:
return SignalStrength.None;
case 1:
return SignalStrength.Weak;
case 2:
case 3:
return SignalStrength.Fair;
case 4:
case 5:
return SignalStrength.Strong;
default:
Debug.WriteLine($"Invalid signal strength encountered: {signalStrength.Value}");
return SignalStrength.Unknown;
}
}

static NetworkAccess PlatformNetworkAccess
{
get
Expand Down
3 changes: 3 additions & 0 deletions Xamarin.Essentials/Permissions/Permissions.android.cs
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Expand Up @@ -161,6 +161,9 @@ internal static IEnumerable<string> ToAndroidPermissions(this PermissionType per
case PermissionType.NetworkState:
permissions.Add((Manifest.Permission.AccessNetworkState, false));
break;
case PermissionType.WifiState:
permissions.Add((Manifest.Permission.AccessWifiState, false));
break;
case PermissionType.Vibrate:
permissions.Add((Manifest.Permission.Vibrate, true));
break;
Expand Down
1 change: 1 addition & 0 deletions Xamarin.Essentials/Permissions/Permissions.shared.enums.cs
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Expand Up @@ -27,5 +27,6 @@ enum PermissionType
LocationWhenInUse,
NetworkState,
Vibrate,
WifiState
}
}
8 changes: 8 additions & 0 deletions docs/en/FrameworksIndex/xamarin-essentials-android.xml
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Expand Up @@ -129,6 +129,7 @@
<Member Id="E:Xamarin.Essentials.Connectivity.ConnectivityChanged" />
<Member Id="P:Xamarin.Essentials.Connectivity.ConnectionProfiles" />
<Member Id="P:Xamarin.Essentials.Connectivity.NetworkAccess" />
<Member Id="P:Xamarin.Essentials.Connectivity.WifiSignalStrength" />
</Type>
<Type Name="Xamarin.Essentials.ConnectivityChangedEventArgs" Id="T:Xamarin.Essentials.ConnectivityChangedEventArgs">
<Member Id="M:Xamarin.Essentials.ConnectivityChangedEventArgs.#ctor(Xamarin.Essentials.NetworkAccess,System.Collections.Generic.IEnumerable{Xamarin.Essentials.ConnectionProfile})" />
Expand Down Expand Up @@ -520,6 +521,13 @@
<Member Id="P:Xamarin.Essentials.ShareTextRequest.Title" />
<Member Id="P:Xamarin.Essentials.ShareTextRequest.Uri" />
</Type>
<Type Name="Xamarin.Essentials.SignalStrength" Id="T:Xamarin.Essentials.SignalStrength">
<Member Id="F:Xamarin.Essentials.SignalStrength.Fair" />
<Member Id="F:Xamarin.Essentials.SignalStrength.None" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Strong" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Unknown" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Weak" />
</Type>
<Type Name="Xamarin.Essentials.Sms" Id="T:Xamarin.Essentials.Sms">
<Member Id="M:Xamarin.Essentials.Sms.ComposeAsync" />
<Member Id="M:Xamarin.Essentials.Sms.ComposeAsync(Xamarin.Essentials.SmsMessage)" />
Expand Down
8 changes: 8 additions & 0 deletions docs/en/FrameworksIndex/xamarin-essentials-ios.xml
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Expand Up @@ -130,6 +130,7 @@
<Member Id="E:Xamarin.Essentials.Connectivity.ConnectivityChanged" />
<Member Id="P:Xamarin.Essentials.Connectivity.ConnectionProfiles" />
<Member Id="P:Xamarin.Essentials.Connectivity.NetworkAccess" />
<Member Id="P:Xamarin.Essentials.Connectivity.WifiSignalStrength" />
</Type>
<Type Name="Xamarin.Essentials.ConnectivityChangedEventArgs" Id="T:Xamarin.Essentials.ConnectivityChangedEventArgs">
<Member Id="M:Xamarin.Essentials.ConnectivityChangedEventArgs.#ctor(Xamarin.Essentials.NetworkAccess,System.Collections.Generic.IEnumerable{Xamarin.Essentials.ConnectionProfile})" />
Expand Down Expand Up @@ -519,6 +520,13 @@
<Member Id="P:Xamarin.Essentials.ShareTextRequest.Title" />
<Member Id="P:Xamarin.Essentials.ShareTextRequest.Uri" />
</Type>
<Type Name="Xamarin.Essentials.SignalStrength" Id="T:Xamarin.Essentials.SignalStrength">
<Member Id="F:Xamarin.Essentials.SignalStrength.Fair" />
<Member Id="F:Xamarin.Essentials.SignalStrength.None" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Strong" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Unknown" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Weak" />
</Type>
<Type Name="Xamarin.Essentials.Sms" Id="T:Xamarin.Essentials.Sms">
<Member Id="M:Xamarin.Essentials.Sms.ComposeAsync" />
<Member Id="M:Xamarin.Essentials.Sms.ComposeAsync(Xamarin.Essentials.SmsMessage)" />
Expand Down
8 changes: 8 additions & 0 deletions docs/en/FrameworksIndex/xamarin-essentials-uwp.xml
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Expand Up @@ -129,6 +129,7 @@
<Member Id="E:Xamarin.Essentials.Connectivity.ConnectivityChanged" />
<Member Id="P:Xamarin.Essentials.Connectivity.ConnectionProfiles" />
<Member Id="P:Xamarin.Essentials.Connectivity.NetworkAccess" />
<Member Id="P:Xamarin.Essentials.Connectivity.WifiSignalStrength" />
</Type>
<Type Name="Xamarin.Essentials.ConnectivityChangedEventArgs" Id="T:Xamarin.Essentials.ConnectivityChangedEventArgs">
<Member Id="M:Xamarin.Essentials.ConnectivityChangedEventArgs.#ctor(Xamarin.Essentials.NetworkAccess,System.Collections.Generic.IEnumerable{Xamarin.Essentials.ConnectionProfile})" />
Expand Down Expand Up @@ -518,6 +519,13 @@
<Member Id="P:Xamarin.Essentials.ShareTextRequest.Title" />
<Member Id="P:Xamarin.Essentials.ShareTextRequest.Uri" />
</Type>
<Type Name="Xamarin.Essentials.SignalStrength" Id="T:Xamarin.Essentials.SignalStrength">
<Member Id="F:Xamarin.Essentials.SignalStrength.Fair" />
<Member Id="F:Xamarin.Essentials.SignalStrength.None" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Strong" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Unknown" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Weak" />
</Type>
<Type Name="Xamarin.Essentials.Sms" Id="T:Xamarin.Essentials.Sms">
<Member Id="M:Xamarin.Essentials.Sms.ComposeAsync" />
<Member Id="M:Xamarin.Essentials.Sms.ComposeAsync(Xamarin.Essentials.SmsMessage)" />
Expand Down
8 changes: 8 additions & 0 deletions docs/en/FrameworksIndex/xamarin-essentials.xml
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Expand Up @@ -129,6 +129,7 @@
<Member Id="E:Xamarin.Essentials.Connectivity.ConnectivityChanged" />
<Member Id="P:Xamarin.Essentials.Connectivity.ConnectionProfiles" />
<Member Id="P:Xamarin.Essentials.Connectivity.NetworkAccess" />
<Member Id="P:Xamarin.Essentials.Connectivity.WifiSignalStrength" />
</Type>
<Type Name="Xamarin.Essentials.ConnectivityChangedEventArgs" Id="T:Xamarin.Essentials.ConnectivityChangedEventArgs">
<Member Id="M:Xamarin.Essentials.ConnectivityChangedEventArgs.#ctor(Xamarin.Essentials.NetworkAccess,System.Collections.Generic.IEnumerable{Xamarin.Essentials.ConnectionProfile})" />
Expand Down Expand Up @@ -515,6 +516,13 @@
<Member Id="P:Xamarin.Essentials.ShareTextRequest.Title" />
<Member Id="P:Xamarin.Essentials.ShareTextRequest.Uri" />
</Type>
<Type Name="Xamarin.Essentials.SignalStrength" Id="T:Xamarin.Essentials.SignalStrength">
<Member Id="F:Xamarin.Essentials.SignalStrength.Fair" />
<Member Id="F:Xamarin.Essentials.SignalStrength.None" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Strong" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Unknown" />
<Member Id="F:Xamarin.Essentials.SignalStrength.Weak" />
</Type>
<Type Name="Xamarin.Essentials.Sms" Id="T:Xamarin.Essentials.Sms">
<Member Id="M:Xamarin.Essentials.Sms.ComposeAsync" />
<Member Id="M:Xamarin.Essentials.Sms.ComposeAsync(Xamarin.Essentials.SmsMessage)" />
Expand Down
17 changes: 17 additions & 0 deletions docs/en/Xamarin.Essentials/Connectivity.xml
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Expand Up @@ -76,5 +76,22 @@
</remarks>
</Docs>
</Member>
<Member MemberName="WifiSignalStrength">
<MemberSignature Language="C#" Value="public static Xamarin.Essentials.SignalStrength WifiSignalStrength { get; }" />
<MemberSignature Language="ILAsm" Value=".property valuetype Xamarin.Essentials.SignalStrength WifiSignalStrength" />
<MemberSignature Language="DocId" Value="P:Xamarin.Essentials.Connectivity.WifiSignalStrength" />
<MemberType>Property</MemberType>
<AssemblyInfo>
<AssemblyName>Xamarin.Essentials</AssemblyName>
<AssemblyVersion>1.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>Xamarin.Essentials.SignalStrength</ReturnType>
</ReturnValue>
<Docs>
<summary>Wifi signal strength.</summary>
<value>Unknown if signal strength was unable to be determined, None if no wifi signal is available. Otherwise a representation of signal strength.</value>
</Docs>
</Member>
</Members>
</Type>
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