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mmierzwa/DeviceThreadDispatcher.cs

Created July 23, 2018 09:22
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Example usage of `TaskCompletionSource`
Raw
DeviceThreadDispatcher.cs
public class DeviceThreadDispatcher : IThreadDispatcher
{
private static int _uiThreadId;
public bool IsOnUiThread => Environment.CurrentManagedThreadId == _uiThreadId;
public static void Initialize(int uiThreadId) => _uiThreadId = uiThreadId;
public T RequestMainThreadAsyncOperation<T>(Func<Task<T>> operation)
{
var result = default(T);
var taskCompletionSource = new TaskCompletionSource<bool>();
Device.BeginInvokeOnMainThread(async () =>
{
result = await operation();
taskCompletionSource.SetResult(true);
});
if (taskCompletionSource.Task.Result)
{
return result;
}
return default (T);
}
}
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