启动另一个后台应用程序的后台应用程序

Question

我有一个 Raspberry Pi 3 运行 windows 10 IOT core with a backgroundapplication1(BGA1) 运行 on it.

我可以从 BGA1 启动另一个后台应用程序 2(BGA2) 吗？并从 BGA1 终止 BGA2 ?

Answer 1

不，你不能。 Background Applications:

launch at machine startup and run continuously without any process lifetime management resource use limitations

因此所有后台应用程序都在机器启动时启动。他们控制自己的生命周期（通过选择退出），但没有其他人可以直接关闭它。

Answer 2

也许 Windows IoT Core Device Portal REST API 有帮助。

以下是从另一个后台应用程序启动后台应用程序的简单代码示例：

namespace BackgroundApplicationStarter
{
    public sealed class StartupTask : IBackgroundTask
    {
        public void Run(IBackgroundTaskInstance taskInstance)
        {
            var deferral = taskInstance.GetDeferral();     

            StartApp();
        }

        private async void StartApp()
        {
            string fullPackageNameEncoded = System.Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes("BackgroundApplication1234-uwp_1.0.0.0_arm__a48w6404kk2ea"));

            Uri endpoint = new Uri("http://127.0.0.1:8080/api/iot/appx/app?appid=" + fullPackageNameEncoded);

            var client = new System.Net.Http.HttpClient();
            var byteArray = Encoding.ASCII.GetBytes("[insert your user name]:[insert your user password]");
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("basic", Convert.ToBase64String(byteArray));

            HttpContent content = new StringContent("", Encoding.UTF8);
            System.Net.Http.HttpResponseMessage response = await client.PostAsync(endpoint, content);
            HttpContent responseContent = response.Content;

            Debug.WriteLine("Response StatusCode: " + (int)response.StatusCode);
        }
    }
}

完成部署后，您可以从 Device Portal 或 Visual Studio 获取完整的程序包名称。

启动另一个后台应用程序的后台应用程序

Background application that start another background application

c#

background-application

.net-core

windows-10-iot-core