void LoadMoreItems(uint count, int baseIndex)
{
BackgroundWorker worker = new BackgroundWorker();
//worker.RunWorkerAsync ();
worker.DoWork += (o, ae) =>
{
DataServiceQuery <Order> query = northwindEntity.Orders.Expand("Customer");
query = query.Skip <Order>(baseIndex).Take <Order>(50) as DataServiceQuery <Order>;
IAsyncResult ar = query.BeginExecute(null, null);
var items = query.EndExecute(ar);
var list = items.ToList();
Android.OS.Handler mainHandler = new Android.OS.Handler(Android.OS.Looper.MainLooper);
Java.Lang.Runnable myRunnable = new Java.Lang.Runnable(() =>
{
GridSource.LoadItems(list);
});
mainHandler.Post(myRunnable);
};
worker.RunWorkerCompleted += (o, ae) =>
{
IsBusy = false;
};
IsBusy = true;
worker.RunWorkerAsync();
}
public void DidScan(IScanSession session)
{
if (session.NewlyRecognizedCodes.Count > 0)
{
if (!ContinuousAfterScan)
{
// Call GC.Collect() before stopping the scanner as the garbage collector for some reason does not
// collect objects without references asap but waits for a long time until finally collecting them.
GC.Collect();
// Stop the scanner directly on the session.
session.PauseScanning();
}
// If you want to edit something in the view hierarchy make sure to run it on the UI thread.
using (var h = new Android.OS.Handler(Android.OS.Looper.MainLooper))
{
h.Post(() =>
{
var symbologies = "";
var data = "";
foreach (var code in session.NewlyRecognizedCodes)
{
var separator = symbologies.Length == 0 ? "" : ", ";
symbologies += separator + code.SymbologyName;
data += separator + code.Data;
}
PickerView.DidScan(symbologies, data);
});
}
}
}
private void Layer_Loaded(object sender, System.EventArgs e)
{
if (sender is ILoadable loadable)
{
loadable.Loaded -= Layer_Loaded;
}
_uithread.Post(Refresh);
}
private static void StartAnimationLoop()
{
#if __ANDROID__
Action init = () =>
{
if (timeAnimator == null)
{
timeAnimator = new Android.Animation.TimeAnimator()
{
RepeatCount = Android.Animation.ValueAnimator.Infinite
};
timeAnimator.Time += (s, e) => OnFrameEvent(TimeSpan.FromMilliseconds(e.TotalTime));
}
timeAnimator.CurrentPlayTime = 0;
timeAnimator.Start();
};
if (Android.OS.Looper.MainLooper.IsCurrentThread)
{
init();
}
else
{
using (var h = new Android.OS.Handler(Android.OS.Looper.MainLooper))
{
h.Post(init);
}
}
#elif __IOS__
if (_displayLink == null)
{
_displayLink = CoreAnimation.CADisplayLink.Create(() => OnFrameEvent(TimeSpan.FromSeconds(_displayLink.Timestamp)));
_displayLink.AddToRunLoop(Foundation.NSRunLoop.Main, Foundation.NSRunLoop.NSDefaultRunLoopMode);
}
#elif NETFX_CORE
if (Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.HasThreadAccess)
{
CompositionTarget.Rendering += CompositionTargetRendering;
}
else
{
var _ = Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () => CompositionTarget.Rendering += CompositionTargetRendering);
}
#else
if (System.Windows.Application.Current.Dispatcher.CheckAccess())
{
CompositionTarget.Rendering += CompositionTargetRendering;
}
else
{
System.Windows.Application.Current.Dispatcher.Invoke(() => CompositionTarget.Rendering += CompositionTargetRendering);
}
#endif
}
public static Task OnMainThread(Action action)
{
var tcs = new TaskCompletionSource <bool>();
var looper = Android.OS.Looper.MainLooper;
var handler = new Android.OS.Handler(looper);
handler.Post(() =>
{
action();
tcs.SetResult(true);
});
return(tcs.Task);
}
/// <summary>
/// check clipboard once while top activity switched to keysetting
/// </summary>
protected override void OnAppearing()
{
Android.OS.Handler a = new Android.OS.Handler();
a.Post(() =>
{
CheckClipboard();
});
/*
* a.PostDelayed(() =>
* {
* CheckClipboard();
* }, 1000);*/
}
public static Task OnMainThread(Func <Task> action)
{
var tcs = new TaskCompletionSource <bool>();
var looper = Android.OS.Looper.MainLooper;
var handler = new Android.OS.Handler(looper);
handler.Post(async() =>
{
try
{
await action();
tcs.SetResult(true);
}
catch (Exception ex)
{
tcs.SetException(ex);
}
});
return(tcs.Task);
}
private void RunOnUIThread(Action action)
{
#if NETFX_CORE
if (Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.HasThreadAccess)
{
action();
}
else
{
var _ = Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () => action());
}
#elif __ANDROID__
if (Android.OS.Looper.MainLooper.IsCurrentThread)
{
action();
}
else
{
using (var h = new Android.OS.Handler(Android.OS.Looper.MainLooper))
{
h.Post(action);
}
}
#elif __IOS__
action();
#else
var dispatcher = System.Windows.Application.Current.Dispatcher;
if (dispatcher == null || dispatcher.HasShutdownStarted || dispatcher.HasShutdownFinished)
{
return; // Occurs during shutdown
}
if (dispatcher.CheckAccess())
{
action();
}
else
{
dispatcher.Invoke(action);
}
#endif
}
/// <summary>
/// check clipboard once while top activity switched to mainpage(not from KeySetting page)
/// </summary>
protected override void OnAppearing()
{
base.OnAppearing();
if (KeySetting.BackFromSetting)
{
KeySetting.BackFromSetting = false;
}
else
{
Android.OS.Handler a = new Android.OS.Handler();
a.Post(() =>
{
CheckClipboard();
});
/*
* a.PostDelayed(() =>
* {
* CheckClipboard();
* }, 1000);*/
}
}
void ReadInternal()
{
if (Configuration.IsForceUI)
{
using (var h = new Handler(Looper.MainLooper))
{
h.Post(() =>
{
if (!_gatt.ReadCharacteristic(_nativeCharacteristic))
{
throw new CharacteristicReadException("BluetoothGattCharacteristic.readCharacteristic returned FALSE");
}
});
}
}
else
{
if (!_gatt.ReadCharacteristic(_nativeCharacteristic))
{
throw new CharacteristicReadException("BluetoothGattCharacteristic.readCharacteristic returned FALSE");
}
}
}
private static void StopAnimationLoop()
{
#if __ANDROID__
if (Android.OS.Looper.MainLooper.IsCurrentThread)
{
timeAnimator?.Cancel();
}
else
{
using (var h = new Android.OS.Handler(Android.OS.Looper.MainLooper))
{
h.Post(() => timeAnimator?.Cancel());
}
}
#elif __IOS__
_displayLink?.Invalidate();
_displayLink = null;
#elif NETFX_CORE
if (Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.HasThreadAccess)
{
CompositionTarget.Rendering -= CompositionTargetRendering;
}
else
{
var _ = Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () => CompositionTarget.Rendering -= CompositionTargetRendering);
}
#else
if (System.Windows.Application.Current.Dispatcher.CheckAccess())
{
CompositionTarget.Rendering -= CompositionTargetRendering;
}
else
{
System.Windows.Application.Current.Dispatcher.Invoke(() => CompositionTarget.Rendering -= CompositionTargetRendering);
}
#endif
}
private void InternalWrite(byte[] data)
{
if (Configuration.IsForceUI)
{
using (var h = new Handler(Looper.MainLooper))
{
h.Post(() =>
{
if (!_nativeCharacteristic.SetValue(data))
{
throw new CharacteristicReadException("Gatt characteristic set value FAILED.");
}
Trace.Message("Write {0}", Id);
if (!_gatt.WriteCharacteristic(_nativeCharacteristic))
{
throw new CharacteristicReadException("Gatt write characteristic FAILED.");
}
});
}
}
else
{
if (!_nativeCharacteristic.SetValue(data))
{
throw new CharacteristicReadException("Gatt characteristic set value FAILED.");
}
Trace.Message("Write {0}", Id);
if (!_gatt.WriteCharacteristic(_nativeCharacteristic))
{
throw new CharacteristicReadException("Gatt write characteristic FAILED.");
}
}
}
private void Layer_Loaded(object sender, System.EventArgs e)
{
(sender as ILoadable).Loaded -= Layer_Loaded;
_uithread.Post(Refresh);
}
void LoadMoreItems (uint count, int baseIndex)
{
BackgroundWorker worker = new BackgroundWorker ();
//worker.RunWorkerAsync ();
worker.DoWork += (o, ae) => {
DataServiceQuery<Order> query = northwindEntity.Orders.Expand ("Customer");
query = query.Skip<Order> (baseIndex).Take<Order> (50) as DataServiceQuery<Order>;
IAsyncResult ar = query.BeginExecute (null, null);
var items = query.EndExecute (ar);
var list = items.ToList ();
Android.OS.Handler mainHandler = new Android.OS.Handler (Android.OS.Looper.MainLooper);
Java.Lang.Runnable myRunnable = new Java.Lang.Runnable (() => {
GridSource.LoadItems (list);
});
mainHandler.Post (myRunnable);
};
worker.RunWorkerCompleted += (o, ae) => {
IsBusy = false;
};
IsBusy = true;
worker.RunWorkerAsync ();
}