public override void ViewDidDisappear(bool animated)
{
base.ViewDidDisappear(animated);
//don't clean up objects, if we want the controller to be kept alive
if (keepScanViewControllerAlive)
{
return;
}
//we have to un-register the event handlers because else the whole viewcontroller will be kept in the garbage collector.
if (meterTypeSegment != null)
{
meterTypeSegment.ValueChanged -= HandleSegmentChange;
}
if (meterTypeSegment != null)
{
meterTypeSegment.Dispose();
}
meterTypeSegment = null;
if (selectionLabel != null)
{
selectionLabel.Dispose();
}
selectionLabel = null;
if (infoLabel != null)
{
infoLabel.Dispose();
}
infoLabel = null;
segmentItems = null;
if (alert != null)
{
alert.Dispose();
}
alert = null;
if (error != null)
{
error.Dispose();
}
error = null;
//we have to erase the scan view so that there are no dependencies for the viewcontroller left.
anylineEnergyView.RemoveFromSuperview();
anylineEnergyView.Dispose();
anylineEnergyView = null;
base.Dispose();
}
private void Save(string path, int size, Action <bool> callback, NSDictionary data)
{
bool result = false;
UIImage photo = null;
UIImage source = null;
NSData file = null;
NSError error = null;
try
{
source = data.ObjectForKey(new NSString("UIImagePickerControllerOriginalImage")) as UIImage;
if (source != null)
{
photo = ScaleImage(source, size);
file = photo.AsJPEG();
bool saved = file.Save(path, false, out error);
if (!saved)
{
Context.HandleException(new NonFatalException(D.IO_EXCEPTION, error.LocalizedDescription));
}
result = saved;
}
}
finally
{
if (photo != null)
{
photo.Dispose();
}
if (source != null)
{
source.Dispose();
}
if (file != null)
{
file.Dispose();
}
if (error != null)
{
error.Dispose();
}
if (data != null)
{
data.Dispose();
}
}
Task.Run(() =>
{
Thread.Sleep(300);
Context.InvokeOnMainThread(() => callback(result));
});
}
/// <summary>
/// Determines if the path is a symbolic link, iOS style.
/// </summary>
protected override bool IsSymLink(string path)
{
NSError error = null;
try
{
var attributes = NSFileManager.DefaultManager?.GetAttributes(path, out error);
if (attributes == null || error != null)
{
return(false);
}
return(attributes.Type == NSFileType.SymbolicLink);
}
finally
{
error?.Dispose();
}
}
new void Dispose()
{
//we have to un-register the event handlers because else the whole viewcontroller will be kept in the garbage collector.
if (_meterTypeSegment != null)
{
_meterTypeSegment.ValueChanged -= HandleSegmentChange;
}
_meterTypeSegment?.Dispose();
_selectionLabel?.Dispose();
_toggleBarcodeLabel.RemoveFromSuperview();
_toggleBarcodeLabel?.Dispose();
_toggleBarcodeSwitch.ValueChanged -= OnValueChanged;
_toggleBarcodeSwitch.RemoveFromSuperview();
_toggleBarcodeSwitch?.Dispose();
_toggleBarcodeView.RemoveFromSuperview();
_toggleBarcodeView?.Dispose();
_segmentItems = null;
_alert?.Dispose();
_error?.Dispose();
//we have to erase the scan view so that there are no dependencies for the viewcontroller left.
_anylineEnergyView?.RemoveFromSuperview();
_anylineEnergyView?.Dispose();
_anylineEnergyView = null;
GC.Collect(GC.MaxGeneration);
base.Dispose();
}
public void NewObjectDispose()
{
var obj = new NSError("com.hitcents.ios4unity", 122);
obj.Dispose();
}
