DEBUG in background task



Steps to debug Background task 

For debugging back-ground task, there are few changes required to above program and FM which I have already created (Pre-requisite Points for back-ground task)  

Running a module in back-ground task means assigning the module to separate LUW.

It can be run parallel and is an asynchronous process.  

Changes required are mentioned below.  

 

To debug our background task we need to switch on Do not process in debugging mode as shown below  

Once we execute our program in SE38, FM will get execute in background task and it will be assigned to a separate LUW.We can see this LUW registered in t-code SM58 and execute, debug and delete manually.  

If we do not check above check box, then LUW gets execute automatically and immediately based on attribute settings at FM level. It does not wait for user to manually execute the same.  

Before executing, let’s check in SM58.  

No records so far.  

 

Now let’s execute the program and check the same step by step.

 

/H to switch on system debug and so that we can mark Do Not Process check box

 

Let’s go to SM58 and refresh.  

Put the cursor on below record and follow the path shown below to debug.  

 

After above execution process, corresponding record from SM58 will be deleted.  

SM58 can be explored more to gain knowledge about different other remote debugging options.

在Xamarin.Forms中,`BackgroundService`是一个用于执行长时间运行任务的服务,即使应用程序处于后台状态也能继续运行。要创建并使用`BackgroundService`,请按照以下步骤操作: 1. 首先,在项目中安装`Xamarin.Essentials`库,它包含了`BackgroundService`的基础功能。你可以通过NuGet包管理器添加这个依赖项。 ```csharp Install-Package Xamarin.Essentials ``` 2. 创建一个新的背景服务类,继承自`Xamarin.Forms.DependencyService`下的`BackgroundService`。假设我们叫它`MyBackgroundService.cs`: ```csharp using System.Threading.Tasks; using Xamarin.Forms; using Xamarin.Essentials; public class MyBackgroundService : BackgroundService { public override async Task StartAsync(StartArguments args) { // 在这里编写你的后台任务逻辑 await ExecuteLongRunningTask(); } private async Task ExecuteLongRunningTask() { // 你的长运行代码 Debug.WriteLine($"Starting background task at {DateTime.Now}"); // 使用延时模拟长时间运行 await Task.Delay(5000); Debug.WriteLine($"Background task finished at {DateTime.Now}"); } protected override void On之争应Error(object sender, ErrorEventArgs e) { // 处理错误 Console.WriteLine($"An error occurred: {e.Message}"); } } ``` 3. 注册你的服务,通常在`App.xaml.cs`的`OnInitialized`方法中: ```csharp protected override void OnInitialized() { base.OnInitialized(); // 如果你的设备支持BackgroundServices if (CrossBackgroundService.Current.IsSupported) { // 注册背景服务 CrossBackgroundService.Current.StartService<MyBackgroundService>(); } } ``` 4. 当需要停止服务时,调用`StopService`方法: ```csharp // 假设你在某个按钮点击事件中想要停止服务 if (CrossBackgroundService.Current.IsServiceRunning<MyBackgroundService>()) { CrossBackgroundService.Current.StopService<MyBackgroundService>(); } ``` 请注意,不是所有Android和iOS设备都支持`BackgroundService`,并且某些操作系统可能有特定的权限要求。在实际应用中,请确保遵循相应的平台指南。
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值