/// <summary>
/// 执行任务
/// </summary>
/// <param name="task"></param>
public async void DoTask(IHttpTask task)
{
if (task is GetTask)
{
var t = task as GetTask;
var bytes = await client.DownloadDataTaskAsync(new Uri(t.Url));
t.CallBack(bytes);
}
else if (task is GetFileTask)
{
var t = task as GetFileTask;
await client.DownloadFileTaskAsync(t.Url, t.FileSavePath);
t.CallBack(new byte[0]);
}
else if (task is PostFileTask)
{
}
else if (task is PostTask)
{
var t = task as PostTask;
await client.UploadDataTaskAsync(new Uri(t.Url), System.Text.Encoding.UTF8.GetBytes(t.UpLoadData));
}
DoNext();
}
/// <summary>
/// 通过队列回调方式执行
/// </summary>
/// <param name="task"></param>
public void DoTaskByCallBack(IHttpTask task)
{
httpTaskQue.Enqueue(task);
if (curTask == null)
{
DoNext();
}
}
protected virtual void Remove(IHttpTask task)
{
lock (this.syncLock)
{
task.PropertyChanged -= this.OnTaskPropertyChanged;
this.currentTasks.Remove(task.Identifier);
this.OnChange(task, TaskListChange.Remove);
}
}
protected virtual void Add(IHttpTask task)
{
lock (this.syncLock)
{
task.PropertyChanged += this.OnTaskPropertyChanged;
this.currentTasks.Add(task.Identifier, task);
this.OnChange(task, TaskListChange.Add);
}
}
protected override void Add(IHttpTask task)
{
if (!(task is IIosHttpTask ios))
{
throw new ArgumentException("You must inherit from IIosHttpTask");
}
this.sessionDelegate.AddTask(ios);
base.Add(task);
}
/// <summary>
/// 执行任务
/// </summary>
/// <param name="task"></param>
public void DoTask(IHttpTask task)
{
if (task is GetTask)
{
}
else if (task is PostTask)
{
var data = task as PostTask;
client.PostData(data.Url, data.UpLoadData);
}
}
private void DoNext()
{
//判断什么时候退出
if (httpTaskQue.Count == 0)
{
curTask = null;
return;
}
curTask = httpTaskQue.Dequeue();
DoTask(curTask);
}
public HttpTaskViewModel(IHttpTask task)
{
this.task = task;
this.Cancel = new Acr.Command(task.Cancel);
this.MoreInfo = new Acr.Command(() =>
{
if (task.Status == TaskStatus.Error)
{
UserDialogs.Instance.Alert(task.Exception.ToString(), "Error");
}
});
}
/// <summary>
/// 异步堵塞
/// </summary>
/// <param name="task"></param>
/// <returns></returns>
public string DoTaskAsync(IHttpTask task)
{
if (task is GetTask)
{
var data = task as GetTask;
var result = client.GetAsync(data.Url);
return(result);
}
else if (task is PostTask)
{
var data = task as PostTask;
var result = client.PostDataAsync(data.Url, data.UpLoadData);
return(result);
}
return("error");
}
public HttpTaskViewModel(IHttpTask task)
{
this.task = task;
this.Cancel = new Command(task.Cancel);
this.MoreInfo = new Command(() =>
{
if (task.Status == TaskStatus.Error)
{
UserDialogs.Instance.Alert(task.Exception.ToString(), "Error");
}
});
this.taskSub = Observable
.Create <IHttpTask>(ob =>
{
var handler = new PropertyChangedEventHandler((sender, args) => ob.OnNext(this.task));
this.task.PropertyChanged += handler;
return(() => this.task.PropertyChanged -= handler);
})
.Sample(TimeSpan.FromSeconds(1))
.Subscribe(x => Device.BeginInvokeOnMainThread(() => this.OnPropertyChanged(String.Empty)));
}
public TaskListEventArgs(IHttpTask task, TaskListChange change)
{
this.Task = task;
this.Change = change;
}
protected virtual void OnChange(IHttpTask task, TaskListChange change) => this.CurrentTasksChanged?.Invoke(this, new TaskListEventArgs(task, change));
