Geometry
A visual aid displayed on the map view to allow precise editing of a geometry on a touch device, using a GeometryEditor. A GeometryEditorReticle is a visual aid displayed on the map view to help precise targeting on a map, separate to the interaction position. It is ideal for use on touch devices, as it can provide an alternative to a mouse hover, allowing you to see a precise position before you tap the screen. This can be especially useful for snapping (see SnapSettings) to allow you to see visual snapping feedback during vertex addition and moves, without fingers hiding the screen and the snapping feedback.
The GeometryEditorReticle is displayed on a map view when:
a GeometryEditor is set onto the map view (com.arcgismaps.mapping.view.MapView.geometryEditor), and
the GeometryEditor is started (GeometryEditor.isStarted is true), and
a ReticleVertexTool is set as the active tool (GeometryEditor.tool)
The reticle is displayed centered in the map view accounting for the current com.arcgismaps.mapping.view.Insets and attribution bar (com.arcgismaps.mapping.view.GeoView.isAttributionTextVisible). The default GeometryEditorReticle.image shows a crosshair with a rounded square border, with black and white lines to help the reticle be distinguished clearly over a variety of different basemaps and operational layers. To customize the appearance of the reticle in order to suit your specific app style, accessibility requirements, or to suit a specific basemap, call GeometryEditorReticle.setImage, or GeometryEditorReticle.setImage.
To avoid potential confusion, when the GeometryEditorReticle is visible the magnifier will not appear, regardless of the value of com.arcgismaps.mapping.view.MapView.magnifierEnabled. If a magnifier is already visible then it will be hidden when the reticle is displayed.
Since
200.5.0
See also
Constructors
Creates a reticle that can be assigned to ReticleVertexTool.reticle. The reticle will have a default GeometryEditorReticle.image, GeometryEditorReticle.height, and GeometryEditorReticle.width.
Properties
The height of the GeometryEditorReticle.image displayed on the MapView in device-independent pixels (DIPs). The default value is 135 DIPs. If the GeometryEditorReticle.image has been set using GeometryEditorReticle.setImage(BitmapDrawable), then this property returns a value of null, and the image will be rendered using the size of the image.
The image representing the reticle to display on the com.arcgismaps.mapping.view.MapView. The default GeometryEditorReticle.image shows a crosshair with a rounded square border, displayed at the current GeometryEditorReticle.height and GeometryEditorReticle.width. You can customize the appearance of the reticle at any point, by calling GeometryEditorReticle.setImage or GeometryEditorReticle.setImage.
The width of the GeometryEditorReticle.image displayed on the MapView in device-independent pixels (DIPs). The default value is 135 DIPs. If the GeometryEditorReticle.image has been set using GeometryEditorReticle.setImage(BitmapDrawable), then this property returns a value of null, and the image will be rendered using the size of the image.
Functions
Sets the image that should be used to display the reticle at the design size on the com.arcgismaps.mapping.view.MapView. Use this method to change the reticle image to your own choice of image, using the physical pixel size of the given image. If you need to scale the image, use GeometryEditorReticle.setImage instead.
Sets the image that should be used to display the reticle at a desired size on the com.arcgismaps.mapping.view.MapView. The center of the image is used as the target position for edits, so bear this in mind when creating your own custom reticle images and ensure the edit position is clear to your users. The image should be designed to avoid obscuring too much of the map and the geometry editor feedback, for example by using large areas of transparent or semi-transparent pixels. This method invokes Bitmap.compress and may be long running.