Tizen

Security and API Privileges<\/a>.<\/p>\n<div class=\"md-alert md-alert-note\">\n<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 16 16\"><path d=\"M0 8a8 8 0 1 1 16 0A8 8 0 0 1 0 8Zm8-6.5a6.5 6.5 0 1 0 0 13 6.5 6.5 0 0 0 0-13ZM6.5 7.75A.75.75 0 0 1 7.25 7h1a.75.75 0 0 1 .75.75v2.75h.25a.75.75 0 0 1 0 1.5h-2a.75.75 0 0 1 0-1.5h.25v-2h-.25a.75.75 0 0 1-.75-.75ZM8 6a1 1 0 1 1 0-2 1 1 0 0 1 0 2Z\"\/><\/svg>Note<\/span>\nSince Tizen 5.5, if the caller application component type is UI application, then the pop-ups by <code>RequestPermission()<\/code> and <code>RequestPermissions()<\/code> are launched as <code>group mode<\/code> with the caller application.\nIf the pop-up is terminated without full response, all the remaining requests that are not responded by the user will be interpreted as Deny<\/strong> action on behalf of the user. In this case, the app gets <code>RequestResult.DenyOnce<\/code> response to those permissions. The app can again request for those automatically denied<\/strong> permissions anytime it needs.\nUse <code>RequestPermissions()<\/code> to request multiple privileges instead of calling <code>RequestPermission()<\/code> multiple times.<\/p>\n<\/div>\n<h2 id=\"content-prerequisites\"><a href=https://samsungtizenos.com/"#content-prerequisites\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Prerequisites<\/h2>\nTo enable your application to use the privacy-related permissions functionality, follow the steps mentioned below:<\/p>\n<ol>\n<li>\nTo use the methods and properties of the <a href=https://samsungtizenos.com/"//application//dotnet//api//TizenFX//latest//api//Tizen.Security.md/">Tizen.Security namespace, include it in your application:<\/p>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code>using<\/span> <\/span>Tizen<\/span>.<\/span>Security<\/span>;<\/span><\/span>\n<\/span><\/code><\/pre>\n<\/li>\n<li>\nCall the <code>Tizen.Security.PrivacyPrivilegeManager<\/code> methods from the context of the application's main event loop.<\/p>\nIt means that the methods can be employed in any UI event handler (such as button click, timer event, system event, and application state change event). If you want to resolve privileges during application startup, call these methods from the Xamarin.Forms resume and start life-cycle methods (<code>Xamarin.Forms.Application.OnResume()<\/code> and <code>Xamarin.Forms.Application.OnStart()<\/code>).<\/p>\n<div class=\"md-alert md-alert-note\">\n<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 16 16\"><path d=\"M0 8a8 8 0 1 1 16 0A8 8 0 0 1 0 8Zm8-6.5a6.5 6.5 0 1 0 0 13 6.5 6.5 0 0 0 0-13ZM6.5 7.75A.75.75 0 0 1 7.25 7h1a.75.75 0 0 1 .75.75v2.75h.25a.75.75 0 0 1 0 1.5h-2a.75.75 0 0 1 0-1.5h.25v-2h-.25a.75.75 0 0 1-.75-.75ZM8 6a1 1 0 1 1 0-2 1 1 0 0 1 0 2Z\"\/><\/svg>Note<\/span>\nThe <code>Tizen.Security.PrivacyPrivilegeManager<\/code> class is not thread-safe.<\/p>\n<\/div>\n<\/li>\n<\/ol>\n<a name=\"requesting\"><\/a><\/p>\n<h2 id=\"content-request-permission\"><a href=https://samsungtizenos.com/"#content-request-permission\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Request permission<\/h2>\nTo check whether an application has permission to use a privilege and to request permission if required, follow the steps mentioned below:<\/p>\n<ol>\n<li>\nTo check whether an application has permission to use a particular privilege, use the <code>CheckPermission()<\/code> method of the <a href=https://samsungtizenos.com/"//application//dotnet//api//TizenFX//latest//api//Tizen.Security.PrivacyPrivilegeManager.md/">Tizen.Security.PrivacyPrivilegeManager class:<\/p>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code>const<\/span> <\/span>string<\/span> <\/span>cameraPrivilege<\/span> <\/span>=<\/span> <\/span>"http:\/\/tizen.org\/privilege\/camera"<\/span>;<\/span><\/span>\n<\/span>\nvoid<\/span> <\/span>CheckAndRequestCameraPermission<\/span>()<\/span><\/span>\n{<\/span><\/span>\n <\/span>try<\/span><\/span>\n {<\/span><\/span>\n <\/span>CheckResult<\/span> <\/span>result<\/span> <\/span>=<\/span> PrivacyPrivilegeManager.<\/span>CheckPermission<\/span>(cameraPrivilege);<\/span><\/span>\n<\/span><\/code><\/pre>\nThe result of the call is returned as a value of the <a href=https://samsungtizenos.com/"//application//dotnet//api//TizenFX//latest//api//Tizen.Security.CheckResult.md/">Tizen.Security.CheckResult enumeration.<\/p>\n<\/li>\n<li>\nReact to the permission check appropriately:<\/p>\n<ul>\n<li>\nIf the result value is <code>Allow<\/code>, the application is allowed to perform operations related to the privilege. For example, the application can enable additional UI elements or functionalities:<\/p>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code> <\/span>switch<\/span> (result)<\/span><\/span>\n {<\/span><\/span>\n <\/span>case<\/span> <\/span>CheckResult<\/span>.<\/span>Allow<\/span>:<\/span><\/span>\n \/\/\/ Update UI and start accessing protected functionality<\/span><\/span>\n <\/span>break<\/span>;<\/span><\/span>\n<\/span><\/code><\/pre>\n<\/li>\n<li>\nIf the result value is <code>Deny<\/code>, the application is not allowed to perform operations related to the privilege. Any attempt to use such functionality without the user's consent fails. Usually, this means that invoking any method that involves the privilege results in an error:<\/p>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code> case CheckResult.Deny<\/span>:<\/span><\/span>\n \/\/\/ Show a message and terminate the application<\/span><\/span>\n <\/span>break<\/span>;<\/span><\/span>\n<\/span><\/code><\/pre>\n<\/li>\n<li>\nIf the result value is <code>Ask<\/code>, the application must request permission from the user with the <code>RequestPermission()<\/code> method, which displays a dialog box. When the user makes a decision, an event handler is invoked (the event handler must have been <a href=https://samsungtizenos.com/"#handler\">previously registered<\/a>).<\/p>\nThe dialog box asking for user permission is shown only if the <code>RequestPermission()<\/code> method does not throw an exception:<\/p>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code> case CheckResult.Ask<\/span>:<\/span><\/span>\n PrivacyPrivilegeManager.<\/span>RequestPermission<\/span>(cameraPrivilege);<\/span><\/span>\n <\/span>break<\/span>;<\/span><\/span>\n }<\/span><\/span>\n<\/span><\/code><\/pre>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code> }<\/span><\/span>\n <\/span>catch<\/span> (<\/span>Exception<\/span> <\/span>e<\/span>)<\/span><\/span>\n {<\/span><\/span>\n \/\/\/ Handle exception<\/span><\/span>\n }<\/span><\/span>\n}<\/span><\/span>\n<\/span><\/code><\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<a name=\"handler\"><\/a>\n3. If you need to request user permission, handle the user decision within an event handler registered for the <code>ResponseFetched<\/code> event of the <a href=https://samsungtizenos.com/"//application//dotnet//api//TizenFX//latest//api//Tizen.Security.PrivacyPrivilegeManager.ResponseContext.md/">Tizen.Security.PrivacyPrivilegeManager.ResponseContext class.<\/p>\n<pre class=\"shiki deleted shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code>The<\/span> <\/span>user<\/span> <\/span>decision<\/span> <\/span>is<\/span> <\/span>returned<\/span> <\/span>in<\/span> <\/span>the<\/span> <\/span>event<\/span> <\/span>handler<\/span> <\/span>as<\/span> <\/span>the<\/span> <\/span>`result`<\/span> <\/span>property<\/span> <\/span>of<\/span> <\/span>the<\/span> [<\/span>Tizen<\/span>.<\/span>Security<\/span>.<\/span>RequestResponseEventArgs<\/span>](<\/span>\/<\/span>application<\/span>\/<\/span>dotnet<\/span>\/<\/span>api<\/span>\/<\/span>TizenFX<\/span>\/<\/span>latest<\/span>\/<\/span>api<\/span>\/<\/span>Tizen<\/span>.<\/span>Security<\/span>.<\/span>RequestResponseEventArgs<\/span>.<\/span>md<\/span>) <\/span>class<\/span>.<\/span><\/span>\n<\/span>\nMake<\/span> <\/span>sure<\/span> <\/span>the<\/span> <\/span>event<\/span> <\/span>handler<\/span> <\/span>is<\/span> <\/span>registered<\/span> <\/span>before<\/span> <\/span>calling<\/span> <\/span>the<\/span> <\/span>`RequestPermission()`<\/span> <\/span>method<\/span> <\/span>of<\/span> <\/span>the<\/span> <\/span>`Tizen.Security.PrivacyPrivilegeManager`<\/span> <\/span>class<\/span>.<\/span> <\/span>For<\/span> <\/span>a<\/span> <\/span>Xamarin<\/span>.<\/span>Forms<\/span> <\/span>application<\/span>, <\/span>the<\/span> <\/span>best<\/span> <\/span>place<\/span> <\/span>to<\/span> <\/span>register<\/span> <\/span>the<\/span> <\/span>event<\/span> <\/span>handler<\/span> <\/span>is<\/span> <\/span>the<\/span> <\/span>`Xamarin.Forms.Application.OnStart()`<\/span> <\/span>life<\/span>-<\/span>cycle<\/span> <\/span>method<\/span>.<\/span> <\/span>This<\/span> <\/span>is<\/span> <\/span>shown<\/span> <\/span>in<\/span> <\/span>the<\/span> <\/span>following<\/span> <\/span>code<\/span> <\/span>block<\/span>:<\/span><\/span>\n<\/span>\n```csharp<\/span><\/span>\nprivate void SetupPPMHandler(string privilege)<\/span><\/span>\n{<\/span><\/span>\n PrivacyPrivilegeManager.ResponseContext context = null;<\/span><\/span>\n if (PrivacyPrivilegeManager.GetResponseContext(privilege).TryGetTarget(out context))<\/span><\/span>\n {<\/span><\/span>\n context.ResponseFetched += PPMResponseHandler;<\/span><\/span>\n }<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nprotected override void OnStart()<\/span><\/span>\n{<\/span><\/span>\n SetupPPMHandler(cameraPrivilege);<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nvoid PPMResponseHandler(object sender, RequestResponseEventArgs e)<\/span><\/span>\n{<\/span><\/span>\n if (e.cause == CallCause.Error)<\/span><\/span>\n {<\/span><\/span>\n \/\/\/ Handle errors<\/span><\/span>\n return;<\/span><\/span>\n }<\/span><\/span>\n<\/span>\n switch (e.result)<\/span><\/span>\n {<\/span><\/span>\n case RequestResult.AllowForever:<\/span><\/span>\n \/\/\/ Update UI and start accessing protected functionality<\/span><\/span>\n break;<\/span><\/span>\n case RequestResult.DenyForever:<\/span><\/span>\n \/\/\/ Show a message and terminate the application<\/span><\/span>\n break;<\/span><\/span>\n case RequestResult.DenyOnce:<\/span><\/span>\n \/\/\/ Show a message with explanation<\/span><\/span>\n break;<\/span><\/span>\n }<\/span><\/span>\n}<\/span><\/span>\n```<\/span><\/span>\n<\/span>\n <\/span>If<\/span> <\/span>the<\/span> <\/span>user<\/span> <\/span>decision<\/span> <\/span>is<\/span> <\/span>`AllowForever`<\/span> <\/span>or<\/span> <\/span>`DenyForever`<\/span>, <\/span>the<\/span> <\/span>decision<\/span> <\/span>is<\/span> <\/span>definitive<\/span> <\/span>and<\/span> <\/span>the<\/span> <\/span>application<\/span> <\/span>can<\/span> <\/span>react<\/span> <\/span>appropriately<\/span>.<\/span> <\/span>It<\/span> <\/span>can<\/span> <\/span>finish<\/span> <\/span>its<\/span> <\/span>execution<\/span> (<\/span>if<\/span> <\/span>denied<\/span> <\/span>permission<\/span>) <\/span>or<\/span> <\/span>start<\/span> <\/span>to<\/span> <\/span>use<\/span> <\/span>protected<\/span> <\/span>methods<\/span> (<\/span>if<\/span> <\/span>granted<\/span> <\/span>permission<\/span>).<\/span><\/span>\n <\/span>If<\/span> <\/span>the<\/span> <\/span>user<\/span> <\/span>decision<\/span> <\/span>is<\/span> `<\/span>DenyOnce<\/span>`, <\/span>the<\/span> <\/span>decision<\/span> <\/span>is<\/span> <\/span>not<\/span> <\/span>definitive<\/span>. <\/span>In<\/span> <\/span>this<\/span> <\/span>case<\/span>, <\/span>access<\/span> <\/span>to<\/span> <\/span>protected<\/span> <\/span>functionality<\/span> <\/span>is<\/span> <\/span>still<\/span> <\/span>prohibited<\/span>. <\/span>This<\/span> <\/span>decision<\/span> <\/span>can<\/span> <\/span>be<\/span> <\/span>interpreted<\/span> <\/span>as<\/span> <\/span>a<\/span> <\/span>cancel<\/span> <\/span>action<\/span> <\/span>on<\/span> <\/span>behalf<\/span> <\/span>of<\/span> <\/span>the<\/span> <\/span>user<\/span>, <\/span>indicating<\/span> <\/span>that<\/span> <\/span>the<\/span> <\/span>user<\/span> <\/span>is<\/span> <\/span>not<\/span> <\/span>sure<\/span> <\/span>what<\/span> <\/span>the<\/span> <\/span>purpose<\/span> <\/span>of<\/span> <\/span>the<\/span> <\/span>request<\/span> <\/span>is<\/span>. <\/span>Therefore<\/span>, <\/span>consider<\/span> <\/span>providing<\/span> <\/span>some<\/span> <\/span>additional<\/span> <\/span>information<\/span> <\/span>to<\/span> <\/span>explain<\/span> <\/span>why<\/span> <\/span>the<\/span> <\/span>permission<\/span> <\/span>is<\/span> <\/span>required<\/span>.<\/span><\/span>\n<\/span>\nIf<\/span> <\/span>the<\/span> <\/span>decision<\/span> <\/span>is<\/span> <\/span>definitive<\/span>, <\/span>any<\/span> <\/span>subsequent<\/span> `<\/span>RequestPermission<\/span>()` <\/span>calls<\/span> <\/span>result<\/span> <\/span>in<\/span> <\/span>an<\/span> <\/span>immediate<\/span> <\/span>response<\/span> <\/span>with<\/span> <\/span>an<\/span> <\/span>appropriate<\/span> <\/span>result<\/span>: `<\/span>AllowForever<\/span>` <\/span>or<\/span> `<\/span>DenyForever<\/span>`. <\/span>However<\/span>, <\/span>the<\/span> <\/span>user<\/span> <\/span>can<\/span> <\/span>change<\/span> <\/span>the<\/span> <\/span>status<\/span> <\/span>of<\/span> <\/span>privacy<\/span>-<\/span>related<\/span> <\/span>privileges<\/span> <\/span>later<\/span> <\/span>by<\/span> <\/span>modifying<\/span> <\/span>the<\/span> <\/span>privacy<\/span> <\/span>settings<\/span> <\/span>on<\/span> <\/span>the<\/span> <\/span>device<\/span>. <\/span>For<\/span> <\/span>this<\/span> <\/span>reason<\/span>, <\/span>the<\/span> <\/span>application<\/span> <\/span>must<\/span> <\/span>always<\/span> <\/span>check<\/span> <\/span>the<\/span> <\/span>status<\/span> <\/span>of<\/span> <\/span>privacy<\/span>-<\/span>related<\/span> <\/span>privileges<\/span> <\/span>before<\/span> <\/span>using<\/span> <\/span>protected<\/span> <\/span>functionality<\/span>.<\/span><\/span>\n<\/span><\/code><\/pre>\n<h2 id=\"content-request-multiple-permissions\"><a href=https://samsungtizenos.com/"#content-request-multiple-permissions\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Request multiple permissions<\/h2>\nThis section describes how to check and request multiple privileges in a single API call.<\/p>\n<div class=\"md-alert md-alert-note\">\n<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 16 16\"><path d=\"M0 8a8 8 0 1 1 16 0A8 8 0 0 1 0 8Zm8-6.5a6.5 6.5 0 1 0 0 13 6.5 6.5 0 0 0 0-13ZM6.5 7.75A.75.75 0 0 1 7.25 7h1a.75.75 0 0 1 .75.75v2.75h.25a.75.75 0 0 1 0 1.5h-2a.75.75 0 0 1 0-1.5h.25v-2h-.25a.75.75 0 0 1-.75-.75ZM8 6a1 1 0 1 1 0-2 1 1 0 0 1 0 2Z\"\/><\/svg>Note<\/span>\nMultiple privileges in a single API call are supported from Tizen 5.5.<\/p>\n<\/div>\nTo check whether an application has permission to use a privilege and to request permission if required, follow the steps below:<\/p>\n<ol>\n<li>\nTo verify whether an application has permission to use privileges, use <code>CheckPermissions()<\/code>:<\/p>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code> <\/span>string<\/span>[] <\/span>privileges<\/span> <\/span>=<\/span> <\/span>new<\/span> [] {<\/span>"http:\/\/tizen.org\/privilege\/account.read"<\/span>,<\/span><\/span>\n <\/span>"http:\/\/tizen.org\/privilege\/alarm"<\/span>};<\/span><\/span>\n <\/span>CheckResult<\/span>[] <\/span>results<\/span> <\/span>=<\/span> PrivacyPrivilegeManager.<\/span>CheckPermissions<\/span>(privileges).<\/span>ToArray<\/span>();<\/span><\/span>\n<\/span><\/code><\/pre>\nThe results of the call is stored in <code>CheckResult<\/code> array.<\/p>\n<\/li>\n<li>\nReact to the permissions check appropriately:<\/p>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code> <\/span>List<\/span><<\/span>string<\/span>> <\/span>privilegesWithAskStatus<\/span> <\/span>=<\/span> <\/span>new<\/span> <\/span>List<\/span><<\/span>string<\/span>>();<\/span><\/span>\n <\/span>try<\/span> {<\/span><\/span>\n <\/span>for<\/span> (<\/span>int<\/span> <\/span>iterator<\/span> <\/span>=<\/span> <\/span>0<\/span>; iterator <\/span>&<\/span>lt; results.Length; <\/span>++<\/span>iterator)<\/span><\/span>\n {<\/span><\/span>\n<\/span><\/code><\/pre>\n<ul>\n<li>\nIf the result value is <code>Allow<\/code>, the application is allowed to perform operations related to the privilege. For example, the application can enable additional UI elements or functionalities:<\/p>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code> <\/span>switch<\/span> (results[iterator])<\/span><\/span>\n {<\/span><\/span>\n <\/span>case<\/span> <\/span>CheckResult<\/span>.<\/span>Allow<\/span>:<\/span><\/span>\n \/\/ Privilege can be used<\/span><\/span>\n <\/span>break<\/span>;<\/span><\/span>\n<\/span><\/code><\/pre>\n<\/li>\n<li>\nIf the result value is <code>Deny<\/code>, the application is not allowed to perform operations related to the privilege. Any attempt to use such functionality without the user's consent fails. Usually, this means that invoking any method that involves the privilege results in an error:<\/p>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code> case CheckResult.Deny<\/span>:<\/span><\/span>\n \/\/ Privilege can't be used<\/span><\/span>\n <\/span>break<\/span>;<\/span><\/span>\n<\/span><\/code><\/pre>\n<\/li>\n<li>\nIf the result value is <code>Ask<\/code>, the application must request permission from the user with the <code>RequestPermissions()<\/code> method, which displays a dialog box. When the user makes a decision, the answers are returned as\n<a href=https://samsungtizenos.com/"//application//dotnet//api//TizenFX//latest//api//Tizen.Security.RequestMultipleResponseEventArgs.md/">Tizen.Security.RequestMultipleResponseEventArgs:/n

Customize your cookie preferences

Necessary

Analytics