protected virtual async Task <PermissionResult> DoRequest(string[] permissions)
{
TaskCompletionSource <PermissionResult> tcs;
lock (locker)
{
tcs = new TaskCompletionSource <PermissionResult>();
requestCode = Platform.NextRequestCode();
requests.Add(requestCode, tcs);
}
if (!MainThread.IsMainThread)
{
throw new PermissionException("Permission request must be invoked on main thread.");
}
ActivityCompat.RequestPermissions(Platform.GetCurrentActivity(true), permissions.ToArray(), requestCode);
var result = await tcs.Task;
return(result);
}
