//
// This method is invoked when the application has loaded and is ready to run. In this
// method you should instantiate the window, load the UI into it and then make the window
// visible.
//
// You have 17 seconds to return from this method, or iOS will terminate your application.
//
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
global::Xamarin.Forms.Forms.Init();
#if !__NATIVE_DEPENDENCIES_EXIST__
throw new System.Exception(
"The requisite onnxruntime.framework file(s) were not found. " +
"You must build the native iOS components before running this sample");
#else
// Register default session options configuration.
SessionOptionsContainer.Register((sessionOptions) => { sessionOptions.LogId = "Ort"; });
// Register a named session options configuration that enables the CoreML EP
SessionOptionsContainer.Register("ort_with_npu", (sessionOptions) => {
sessionOptions.AppendExecutionProvider_CoreML(CoreMLFlags.COREML_FLAG_ONLY_ENABLE_DEVICE_WITH_ANE);
options.LogId = "Ort+CoreML";
});
LoadApplication(new App());
#endif
#pragma warning disable CS0162 // Unreachable code detected
return(base.FinishedLaunching(app, options));
#pragma warning restore CS0162 // Unreachable code detected
}
private async Task ExecuteTests()
{
Action <Label, string> addOutput = (label, text) =>
{
Application.Current.Dispatcher.Dispatch(() => { label.Text += text; });
//Device.BeginInvokeOnMainThread(() => { label.Text += text; });
Console.Write(text);
};
OutputLabel.Text = "Testing execution\nComplete output is written to Console in this trivial example.\n\n";
// run the testing in a background thread so updates to the UI aren't blocked
await Task.Run(() =>
{
addOutput(OutputLabel, "Testing using default platform-specific session options... ");
inferenceSampleApi.Execute();
addOutput(OutputLabel, "done.\n");
Thread.Sleep(1000); // artificial delay so the UI updates gradually
// demonstrate a range of usages by recreating the inference session with different session options.
addOutput(OutputLabel, "Testing using default platform-specific session options... ");
inferenceSampleApi.CreateInferenceSession(SessionOptionsContainer.Create());
inferenceSampleApi.Execute();
addOutput(OutputLabel, "done.\n");
Thread.Sleep(1000);
addOutput(OutputLabel, "Testing using named platform-specific session options... ");
inferenceSampleApi.CreateInferenceSession(SessionOptionsContainer.Create("ort_with_npu"));
inferenceSampleApi.Execute();
addOutput(OutputLabel, "done.\n");
Thread.Sleep(1000);
addOutput(OutputLabel, "Testing using default platform-specific session options via ApplyConfiguration extension... ");
inferenceSampleApi.CreateInferenceSession(new SessionOptions().ApplyConfiguration());
inferenceSampleApi.Execute();
addOutput(OutputLabel, "done.\n");
Thread.Sleep(1000);
addOutput(OutputLabel, "Testing using named platform-specific session options via ApplyConfiguration extension... ");
inferenceSampleApi.CreateInferenceSession(new SessionOptions().ApplyConfiguration("ort_with_npu"));
inferenceSampleApi.Execute();
addOutput(OutputLabel, "done.\n\n");
Thread.Sleep(1000);
});
addOutput(OutputLabel, "Testing successfully completed! See the Console log for more info.");
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
Xamarin.Essentials.Platform.Init(this, savedInstanceState);
global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
// Register default session options configuration. This is optional.
SessionOptionsContainer.Register((options) => { options.LogId = "Ort"; });
// Register a named session options configuration that enables NNAPI
SessionOptionsContainer.Register("ort_with_npu", (options) => {
options.AppendExecutionProvider_Nnapi();
options.LogId = "Ort+Nnapi";
});
LoadApplication(new App());
}