When I use the RadTreeView in ChildWindow, even though I set the IsDragDropEnabled property to "True", I can't drag the items. But when I use the RadTreeView in a UserControl, it can drag.
What is the problem, and how can I fix it?
You have to fire event
In contructor
this.treeView1.AddHandler(RadDragAndDropManager.DropQueryEvent, new EventHandler<DragDropQueryEventArgs>(OnDropQuery), true);
Then
private void OnDropQuery(object sender, DragDropQueryEventArgs e)
{
RadTreeViewItem destinationItem = e.Options.Destination as RadTreeViewItem;
object source = this.GetItemFromPayload<object>(e.Options.Payload);
object target = destinationItem != null ? destinationItem.Item : null;
DropPosition position = destinationItem != null ? destinationItem.DropPosition : DropPosition.Inside;
if (source != null && target != null)
{
Section sourceSection = source as Section;
Section targetSection = target as Section;
Question sourceQuestion = source as Question;
Question targetQuestion = target as Question;
if (sourceQuestion != null)
{
try
{
if (sourceQuestion != null && targetQuestion != null && object.ReferenceEquals(sourceQuestion, targetQuestion))
{
sourceSection.Questions.Remove(sourceQuestion);
targetSection.Questions.Add(sourceQuestion);
e.QueryResult = false;
return;
}
if (targetQuestion != null && position == DropPosition.Inside)
{
sourceSection.Questions.Remove(sourceQuestion);
targetSection.Questions.Add(sourceQuestion);
e.QueryResult = false;
return;
}
if (position != DropPosition.Inside && targetQuestion == null)
{
sourceSection.Questions.Remove(sourceQuestion);
targetSection.Questions.Add(sourceQuestion);
e.QueryResult = false;
return;
}
}
catch (Exception ex)
{
}
}
}
else
{
e.QueryResult = false;
return;
}
e.QueryResult = true;
}
This is it.
Related
Spring is not caching my function when i am using default key such as -
#PostMapping("getDashboardDataNew")
#Cacheable(value="myDash")
public DashboardDto getHomeDashboardDataNew(#RequestBody DashboardRequest dashboardRequest) {
LOGGER.info(" Get All the Dashboard Information : ");
//code
return dashboardDto;
}
But when I am providing custom key using sPEL its caching the response eg.
#PostMapping("getDashboardDataNew")
#Cacheable(value="myDash", key="#dashboardRequest.level")
public DashboardDto getHomeDashboardDataNew(#RequestBody DashboardRequest dashboardRequest) {
LOGGER.info(" Get All the Dashboard Information : ");
//code
return dashboardDto;
}
The request payload is always-
{"fromDate":null,"toDate":null,"theme":null,"activity":null,"level":1,"levelValue":null,"state":null,"district":null}
Even after auto generating equals and hashcode using eclipse the spring is not caching the value. Below are the auto generated codes
#Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((activity == null) ? 0 : activity.hashCode());
result = prime * result + ((fromDate == null) ? 0 : fromDate.hashCode());
result = prime * result + ((level == null) ? 0 : level.hashCode());
result = prime * result + ((levelValue == null) ? 0 : levelValue.hashCode());
result = prime * result + ((organizer == null) ? 0 : organizer.hashCode());
result = prime * result + ((theme == null) ? 0 : theme.hashCode());
result = prime * result + ((toDate == null) ? 0 : toDate.hashCode());
return result;
}
#Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
DashboardRequest other = (DashboardRequest) obj;
if (activity == null) {
if (other.activity != null)
return false;
} else if (!activity.equals(other.activity))
return false;
if (fromDate == null) {
if (other.fromDate != null)
return false;
} else if (!fromDate.equals(other.fromDate))
return false;
if (level == null) {
if (other.level != null)
return false;
} else if (!level.equals(other.level))
return false;
if (levelValue == null) {
if (other.levelValue != null)
return false;
} else if (!levelValue.equals(other.levelValue))
return false;
if (organizer == null) {
if (other.organizer != null)
return false;
} else if (!organizer.equals(other.organizer))
return false;
if (theme == null) {
if (other.theme != null)
return false;
} else if (!theme.equals(other.theme))
return false;
if (toDate == null) {
if (other.toDate != null)
return false;
} else if (!toDate.equals(other.toDate))
return false;
return true;
}
I am not changing the request payload.
By default when no key is supplied, Spring cache relies on SimpleKeyGenerator which relies on hashcode of parameters to generate the key. You can check this link.
I figured out what went wrong here.
I was changing one of the property of the request payload somewhere inside the function eg.
dashboardRequest.setLevel(dashboardRequest.getLevel() + 1);
And as spring cache AOP puts the value in cache after the method execution is was using the modified object instead of value provided in param effectively making my key different from the key that would have generated by request payload. Hope this helps someone.
im trying to draw a path on map which user walked. It works fine on android but ios, just draw at start little line. After "OnElementPropertyChanged" triggered not draw anything.
RouteCoordinates are created on CustomMap based Map class as BindableProperties. I think my property changed method can not reach right display layer or thread.
My custom renderer for IOS:
[assembly: ExportRenderer(typeof(CustomMap), typeof(CustomMapRenderer))]
namespace PawsApp.iOS.Renderers
{
public class CustomMapRenderer : MapRenderer
{
MKPolylineRenderer polylineRenderer;
CustomMap formsMap;
MKMapView nativeMap;
protected override void OnElementChanged(ElementChangedEventArgs<View> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
if (nativeMap != null)
{
nativeMap.RemoveOverlays(nativeMap.Overlays);
nativeMap.OverlayRenderer = null;
polylineRenderer = null;
}
}
if (e.NewElement != null)
{
formsMap = (CustomMap)e.NewElement;
nativeMap = Control as MKMapView;
UpdatePolyLine();
}
}
protected override void OnElementPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (this.Element == null || this.Control == null)
return;
//if (e.PropertyName == CustomMap.RouteCoordinatesProperty.PropertyName)
if ((e.PropertyName == "RouteCoordinates" || e.PropertyName == "VisibleRegion"))
{
formsMap = (CustomMap)sender;
nativeMap = Control as MKMapView;
UpdatePolyLine();
}
}
private void UpdatePolyLine()
{
//var nativeMap = Control as MKMapView;
nativeMap.OverlayRenderer = GetOverlayRenderer;
CLLocationCoordinate2D[] coords = new CLLocationCoordinate2D[formsMap.RouteCoordinates.Count];
int index = 0;
foreach (var position in formsMap.RouteCoordinates)
{
coords[index] = new CLLocationCoordinate2D(position.Latitude, position.Longitude);
index++;
}
var routeOverlay = MKPolyline.FromCoordinates(coords);
nativeMap.AddOverlay(routeOverlay);
}
//[Foundation.Export("mapView:rendererForOverlay:")]
MKOverlayRenderer GetOverlayRenderer(MKMapView mapView, IMKOverlay overlayWrapper)
{
if (polylineRenderer == null)
{
var overlay = Runtime.GetNSObject(overlayWrapper.Handle) as IMKOverlay;
//var overlay = Runtime.GetNSObject(overlayWrapper.Handle) as MKPolyline;
polylineRenderer = new MKPolylineRenderer(overlay as MKPolyline)
{
FillColor = UIColor.Yellow,
StrokeColor = UIColor.Red,
LineWidth = 3,
Alpha = 0.4f
};
}
return polylineRenderer;
}
}
}
After trying it on my side, I find if you want to refresh the polyLine in the Map in iOS, you have to:
remove the old polyline;
use a new nativeMap.OverlayRenderer everytime.
I changed the customer renderer code like this:
public class CustomMapRenderer : MapRenderer
{
MKPolylineRenderer polylineRenderer;
CustomMap formsMap;
MKMapView nativeMap;
MKPolyline polyline;
protected override void OnElementChanged(ElementChangedEventArgs<View> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
if (nativeMap != null)
{
nativeMap.RemoveOverlays(nativeMap.Overlays);
nativeMap.OverlayRenderer = null;
polylineRenderer = null;
}
}
if (e.NewElement != null)
{
formsMap = (CustomMap)e.NewElement;
nativeMap = Control as MKMapView;
UpdatePolyLine();
}
}
protected override void OnElementPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (this.Element == null || this.Control == null)
return;
//if (e.PropertyName == CustomMap.RouteCoordinatesProperty.PropertyName)
if ((e.PropertyName == "RouteCoordinates" || e.PropertyName == "VisibleRegion"))
{
formsMap = (CustomMap)sender;
nativeMap = Control as MKMapView;
UpdatePolyLine();
}
}
private void UpdatePolyLine()
{
//var nativeMap = Control as MKMapView;
if (polyline != null)
{
nativeMap.RemoveOverlay(polyline);
polyline.Dispose();
}
nativeMap.OverlayRenderer = GetOverlayRenderer;
CLLocationCoordinate2D[] coords = new CLLocationCoordinate2D[formsMap.RouteCoordinates.Count];
int index = 0;
foreach (var position in formsMap.RouteCoordinates)
{
coords[index] = new CLLocationCoordinate2D(position.Latitude, position.Longitude);
index++;
}
var routeOverlay = MKPolyline.FromCoordinates(coords);
nativeMap.AddOverlay(routeOverlay);
polyline = routeOverlay;
}
//[Foundation.Export("mapView:rendererForOverlay:")]
MKOverlayRenderer GetOverlayRenderer(MKMapView mapView, IMKOverlay overlayWrapper)
{
if (polylineRenderer != null)
{
polylineRenderer = null;
}
var overlay = Runtime.GetNSObject(overlayWrapper.Handle) as IMKOverlay;
//var overlay = Runtime.GetNSObject(overlayWrapper.Handle) as MKPolyline;
polylineRenderer = new MKPolylineRenderer(overlay as MKPolyline)
{
FillColor = UIColor.Yellow,
StrokeColor = UIColor.Red,
LineWidth = 3,
Alpha = 0.4f
};
return polylineRenderer;
}
}
And in the xamarin.forms porject, reset the customMap.RouteCoordinates every time:
Device.StartTimer(TimeSpan.FromSeconds(3), () =>
{
Device.BeginInvokeOnMainThread(() =>
{
a -= 0.000321;
b += 0.000222;
customMap.RouteCoordinates = new List<Position>
{
new Position (37.797534, -122.401827),
new Position(37.797510, -122.402060),
new Position(37.790269, -122.400589),
new Position(37.790265, -122.400474),
new Position(37.790228, -122.400391),
new Position(37.790126, -122.400360),
new Position(37.789250, -122.401451),
new Position(a, b)
};
});
return true;
});
I also upload my demo here and you can check it. Let me know if it works.
I’m using the BottomBarPage package. I’m changing the Tab on the fly programmatically, however the icon at the bottom doesn’t get highlighted for Android when there’s a tab change. It works well on iOS on the hand.
I tried James Montemagno’s code, I couldn’t get it to work with the BottomBarPage package.
This is the link to his code
https://montemagno.com/dynamically-changing-xamarin-forms-tab-icons-when-select/
How do I get the Icon highlighted when there is a Tab Page happening programmatically for BottomBarPage?
Below is my code.
public AndroidMainPage(int indexPage)
{
InitializeComponent();
NavigationPage.SetHasNavigationBar(this, false);
CurrentPageChanged += MainPage_CurrentPageChanged;
CurrentPage = Children[indexPage];
CurrentPage.Appearing += (s, a) => Children[indexPage].Icon = new FileImageSource() { File = "quizzes_selected.png" };
CurrentPage.Disappearing += (s, a) => Children[indexPage].Icon = new FileImageSource() { File = "quizzes.png" };
_currentPage = CurrentPage;
}
private void MainPage_CurrentPageChanged(object sender, EventArgs e)
{
IIconChange currentBinding;
if (_currentPage != null)
{
currentBinding = ((NavigationPage)_currentPage).CurrentPage.BindingContext as IIconChange;
if (currentBinding != null)
currentBinding.IsSelected = false;
}
_currentPage = CurrentPage;
currentBinding = ((NavigationPage)_currentPage).CurrentPage.BindingContext as IIconChange;
if (currentBinding != null)
currentBinding.IsSelected = true;
UpdateIcons?.Invoke(this, EventArgs.Empty);
}
Android BottomBarPage Renderer:
[assembly: ExportRenderer(typeof(AndroidMainPage), typeof(MyTabbedPageRenderer))]
namespace TabPageDemo.Android.Renderers
{
public class MyTabbedPageRenderer : BottomBarPageRenderer
{
bool setup;
TabLayout layout;
public MyTabbedPageRenderer()
{
}
protected override void OnElementChanged(ElementChangedEventArgs<BottomBarPage> e)
{
if (e != null) base.OnElementChanged(e);
if (Element != null)
{
((AndroidMainPage)Element).UpdateIcons += Handle_UpdateIcons;
}
}
protected override void OnElementPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (layout == null && e.PropertyName == "Renderer")
{
layout = (TabLayout)ViewGroup.GetChildAt(1);
}
}
void Handle_UpdateIcons(object sender, EventArgs e)
{
TabLayout tabs = layout;
if (tabs == null)
return;
for (var i = 0; i < Element.Children.Count; i++)
{
var child = Element.Children[i].BindingContext as IIconChange;
if (child == null) continue;
var icon = child.CurrentIcon;
if (string.IsNullOrEmpty(icon))
continue;
TabLayout.Tab tab = tabs.GetTabAt(i);
SetCurrentTabIcon(tab, icon);
}
}
void SetCurrentTabIcon(TabLayout.Tab tab, string icon)
{
tab.SetIcon(IdFromTitle(icon, ResourceManager.DrawableClass));
}
int IdFromTitle(string title, Type type)
{
string name = Path.GetFileNameWithoutExtension(title);
int id = GetId(type, name);
return id;
}
int GetId(Type type, string memberName)
{
object value = type.GetFields().FirstOrDefault(p => p.Name == memberName)?.GetValue(type)
?? type.GetProperties().FirstOrDefault(p => p.Name == memberName)?.GetValue(type);
if (value is int)
return (int)value;
return 0;
}
}
}
Using the Renderer, the tab variable is always null from this TabLayout.Tab tab = tabs.GetTabAt(i);
Any suggestion?
I have the following code in iOS renderer:
public class TabbedPageRenderer : TabbedRenderer
{
protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
try
{
var tabbarController = (UITabBarController)this.ViewController;
if (null != tabbarController)
{
tabbarController.ViewControllerSelected += OnTabBarReselected;
}
}
catch (Exception exception)
{
Console.WriteLine(exception);
}
}
void OnTabBarReselected(object sender, UITabBarSelectionEventArgs e)
{
var tabs = Element as TabbedPage;
var playTab = tabs.Children[4];
if (TabBar.SelectedItem.Title == "Play")
{
if (tabs != null)
{
playTab.Title = "Pause";
playTab.Icon = "ionicons_2_0_1_pause_outline_22.png";
}
App.pauseCard = false;
}
else
{
if (tabs != null)
{
playTab.Title = "Play";
playTab.Icon = "ionicons_2_0_1_play_outline_25.png";
}
App.pauseCard = true;
}
}
}
What this do is let the user pause/play a timer running in a page. When opening the app, Home tab will be open so the Play icon is displayed. But when switching to the Play tab, by default the timer is running so the Pause title and icon is displayed.
The code above works perfectly for iOS. But I am still lost in Android. I have tried the following code for Android:
public class MyTabbedPageRenderer: TabbedPageRenderer, TabLayout.IOnTabSelectedListener
{
void TabLayout.IOnTabSelectedListener.OnTabReselected(TabLayout.Tab tab)
{
var tabs = Element as TabbedPage;
var playTab = tabs.Children[4];
var selectedPosition = tab.Position;
if(selectedPosition == 4)
{
if (playTab.Title == "Play")
{
if (tabs != null)
{
playTab.Title = "Pause";
playTab.Icon = "ionicons_2_0_1_pause_outline_22.png";
}
App.pauseCard = false;
}
else
{
if (tabs != null)
{
playTab.Title = "Play";
playTab.Icon = "ionicons_2_0_1_play_outline_25.png";
}
App.pauseCard = true;
}
}
}
}
Obviously this would only work when reselecting the tab. Would really appreciate if someone could point me to the right direction here.
Like #G.hakim, you also need add TabLayout.IOnTabSelectedListener.OnTabSelected method, and it will be same as OnTabReselected:
void TabLayout.IOnTabSelectedListener.OnTabSelected(TabLayout.Tab tab)
{
var tabs = Element as TabbedPage;
var playTab = tabs.Children[4];
var selectedPosition = tab.Position;
if(selectedPosition == 4)
{
if (playTab.Title == "Play")
{
if (tabs != null)
{
playTab.Title = "Pause";
playTab.Icon = "ionicons_2_0_1_pause_outline_22.png";
}
App.pauseCard = false;
}
else
{
if (tabs != null)
{
playTab.Title = "Play";
playTab.Icon = "ionicons_2_0_1_play_outline_25.png";
}
App.pauseCard = true;
}
}
}
Calling Save() twice raice MAPI_E_OBJECT_CHANGED error. The weird thing is if I select another mail on the grid and go back and then select the first one again and perform the action it works fine. This only happens with imap accounts.
Code:
public void UpdateMailObject(bool linked)
{
Outlook._Application outlookApplication = null;
Redemption.RDOMail rdoEmail = null;
Redemption.RDOSession rdoSession = null;
RDOFolder folder = null;
RDOStores stores = null;
RDOStore store = null;
RDOStore unwStore = null;
Outlook.Explorer outlookExplorer = null;
Outlook.MailItem selectedMail = null;
try
{
outlookApplication = new Outlook.Application();
rdoSession = new Redemption.RDOSession();
object MAPIOBJECT = outlookApplication.Session.GetType().InvokeMember("MAPIOBJECT", BindingFlags.GetProperty, null,
outlookApplication.Session, null);
rdoSession.MAPIOBJECT = MAPIOBJECT;
outlookExplorer = outlookApplication.ActiveExplorer();
selectedMail = outlookExplorer.Selection.OfType<Outlook.MailItem>().FirstOrDefault();
RDOMail rdoMailAux = rdoSession.GetRDOObjectFromOutlookObject(selectedMail, true) as RDOMail;
folder = rdoMailAux.Parent as RDOFolder;
Marshal.ReleaseComObject(rdoMailAux);
string storeId = folder.StoreID;
stores = rdoSession.Stores;
store = stores.GetStoreFromID(storeId);
unwStore = stores.UnwrapStore(store);
rdoEmail = unwStore.GetMessageFromID(selectedMail.EntryID, null);
string sGUID = PS_PUBLIC_STRINGS.ToString("B");
int iID = rdoEmail.GetIDsFromNames(sGUID, GMLINK);
if (iID != 0)
{
rdoEmail.set_Fields(iID, linked);
}
rdoEmail.Save();
}
finally
{
if (outlookApplication != null)
{
Marshal.ReleaseComObject(outlookApplication);
}
if (folder != null)
{
Marshal.ReleaseComObject(folder);
}
if (stores != null)
{
Marshal.ReleaseComObject(stores);
}
if (store != null)
{
Marshal.ReleaseComObject(store);
}
if (unwStore != null)
{
Marshal.ReleaseComObject(unwStore);
}
if (rdoEmail != null)
{
Marshal.ReleaseComObject(rdoEmail);
}
if (outlookExplorer != null)
{
Marshal.ReleaseComObject(outlookExplorer);
}
if (rdoSession != null)
{
Marshal.ReleaseComObject(rdoSession);
}
}
}