Initial commit.

Plugin.Maui.ScreenSecurity.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.33516.290
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Plugin.Maui.ScreenSecurity", "Plugin.Maui.ScreenSecurity\Plugin.Maui.ScreenSecurity.csproj", "{C9913AAB-598A-43EF-93E9-6FA4AE4CCAEC}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{F0127D89-F3B5-4C88-9016-5CCA2DBF3F59}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ScreenSecuritySample", "samples\ScreenSecuritySample\ScreenSecuritySample.csproj", "{479D2E8B-47FB-4F0D-B1AB-3DF4CC7D28A5}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C9913AAB-598A-43EF-93E9-6FA4AE4CCAEC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C9913AAB-598A-43EF-93E9-6FA4AE4CCAEC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C9913AAB-598A-43EF-93E9-6FA4AE4CCAEC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C9913AAB-598A-43EF-93E9-6FA4AE4CCAEC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{479D2E8B-47FB-4F0D-B1AB-3DF4CC7D28A5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{479D2E8B-47FB-4F0D-B1AB-3DF4CC7D28A5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{479D2E8B-47FB-4F0D-B1AB-3DF4CC7D28A5}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
+		{479D2E8B-47FB-4F0D-B1AB-3DF4CC7D28A5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{479D2E8B-47FB-4F0D-B1AB-3DF4CC7D28A5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{479D2E8B-47FB-4F0D-B1AB-3DF4CC7D28A5}.Release|Any CPU.Deploy.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{479D2E8B-47FB-4F0D-B1AB-3DF4CC7D28A5} = {F0127D89-F3B5-4C88-9016-5CCA2DBF3F59}
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {FB29A9B4-E0B3-4C0E-9E67-D98FC2F3E4EB}
+	EndGlobalSection
+EndGlobal

Plugin.Maui.ScreenSecurity/IScreenSecurity.cs

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+#if IOS
+using Plugin.Maui.ScreenSecurity.Platforms.iOS;
+#endif
+
+namespace Plugin.Maui.ScreenSecurity;
+
+public interface IScreenSecurity
+{
+#if ANDROID
+    /// <summary>
+    /// Prevent screen content from being exposed when the app
+    /// is sent to <b>Background</b> or the <b>Recents screen</b>.
+    /// Also prevents app <b>screenshots</b> or <b>recording</b> to be taken.
+    /// </summary>
+    /// <remarks>Supported for <b><c>Android</c></b> only.</remarks>
+    void EnableScreenSecurityProtection();
+
+    /// <summary>
+    /// Re-enables screen content exposure.
+    /// </summary>
+    /// <remarks>Supported for <b><c>Android</c></b> only.</remarks>
+    void DisableScreenSecurityProtection();
+#elif IOS
+    /// <summary>
+    /// Prevent screen content from being exposed by 
+    /// using a <b>Blur layer</b> when the app is sent to 
+    /// <b>Background</b> or the <b>App Switcher</b>.
+    /// </summary>
+    /// <param name="style">
+    /// Choose between a <b><c>Light</c></b> or <b><c>Dark</c></b> theme for the Blur layer.
+    /// <b><c>Light</c></b> by default.
+    /// </param>
+    /// <remarks>Supported for <b><c>iOS</c></b> only.</remarks>
+    void EnableBlurScreenProtection(ThemeStyle style);
+
+    /// <summary>
+    /// Removes the <b>Blur layer</b> and re-enables screen content exposure.
+    /// </summary>
+    /// <remarks>Supported for <b><c>iOS</c></b> only.</remarks>
+    void DisableBlurScreenProtection();
+
+    /// <summary>
+    /// Prevent screen content from being exposed by
+    /// using a <b>Color layer</b> when the app is sent to
+    /// <b>Background</b> or the <b>App Switcher</b>.
+    /// </summary>
+    /// <param name="hexColor">Hexadecimal color as <b><c>string</c></b> in the form of 
+    /// <b><c>#RGB</c></b>, <b><c>#RGBA</c></b>, <b><c>#RRGGBB</c></b> or <b><c>#RRGGBBAA</c></b>.
+    /// <b>#FFFFFF</b> by default.</param>
+    /// <remarks>Supported for <b><c>iOS</c></b> only.</remarks>
+    void EnableColorScreenProtection(string hexColor);
+
+    /// <summary>
+    /// Removes the <b>Color layer</b> and re-enables screen content exposure.
+    /// </summary>
+    /// <remarks>Supported for <b><c>iOS</c></b> only.</remarks>
+    void DisableColorScreenProtection();
+
+    /// <summary>
+    /// Prevent screen content from being exposed by
+    /// using an <b>Image</b> when the app is sent to
+    /// <b>Background</b> or the <b>App Switcher</b>.
+    /// </summary>
+    /// <param name="image">Name with extension of the image to use.</param>
+    /// <remarks>Supported for <b><c>iOS</c></b> only.</remarks>
+    void EnableImageScreenProtection(string image);
+
+    /// <summary>
+    /// Removes the <b>Image</b> and re-enables screen content exposure.
+    /// </summary>
+    /// <remarks>Supported for <b><c>iOS</c></b> only.</remarks>
+    void DisableImageScreenProtection();
+
+    /// <summary>
+    /// Prevent screen content from <b>being recorded</b> 
+    /// by the system or external app. <b>It uses the 
+    /// Blur layer by default.</b>
+    /// </summary>
+    /// <param name="withColor">Hexadecimal color as <b><c>string</c></b> in the form of 
+    /// <b><c>#RGB</c></b>, <b><c>#RGBA</c></b>, <b><c>#RRGGBB</c></b> or <b><c>#RRGGBBAA</c></b>. 
+    /// It can be mixed with <paramref name="withBlur"/>.</param>
+    /// <param name="withBlur">Set it to <b><c>false</c></b> to deactivate screen protection with Blur. 
+    /// It can be mixed with <paramref name="withColor"/>. <b><c>True</c> by default.</b></param>
+    /// <remarks>Supported for <b><c>iOS</c></b> only.</remarks>
+    void EnableScreenRecordingProtection(string withColor = "", bool withBlur = true);
+
+    /// <summary>
+    /// Turn off the screen recording protection.
+    /// </summary>
+    /// <remarks>Supported for <b><c>iOS</c></b> only.</remarks>
+    void DisableScreenRecordingProtection();
+#endif
+}

Plugin.Maui.ScreenSecurity/Platforms/Android/ScreenSecurity.android.cs

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+using Android.Views;
+
+namespace Plugin.Maui.ScreenSecurity;
+
+partial class ScreenSecurityImplementation : IScreenSecurity
+{
+    /// <summary>
+    /// Prevent screen content from being exposed when the app
+    /// is sent to <b>Background</b> or the <b>Recents screen</b>.
+    /// Also prevents app <b>screenshots</b> or <b>recording</b> to be taken.
+    /// </summary>
+    public void EnableScreenSecurityProtection()
+    {
+        try
+        {
+            var activity = Platform.CurrentActivity;
+
+            activity?.Window?.SetFlags(WindowManagerFlags.Secure, WindowManagerFlags.Secure);
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"EnableScreenSecurityProtection failed with Exception message: {ex.Message}");
+            Console.WriteLine($"Exception Stacktrace: {ex.StackTrace}");
+            if (ex.InnerException != null)
+                Console.WriteLine($"With InnerException: {ex.InnerException}");
+        }
+    }
+
+    /// <summary>
+    /// Re-enables screen content exposure.
+    /// </summary>
+    public void DisableScreenSecurityProtection()
+    {
+        try
+        {
+            var activity = Platform.CurrentActivity;
+
+            activity?.Window?.ClearFlags(WindowManagerFlags.Secure);
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"DisableScreenSecurityProtection failed with Exception message: {ex.Message}");
+            Console.WriteLine($"Exception Stacktrace: {ex.StackTrace}");
+            if (ex.InnerException != null)
+                Console.WriteLine($"With InnerException: {ex.InnerException}");
+        }
+    }
+}