Since upgrading to 10.2.6 the onStatusChanged signal for layer objects doesn't seem to be firing. We have a basemap picker in our app and as the user selected basemaps we would use this event to make sure the basemap they picked was initialized before they could pick any other basemaps. Not doing that caused an app crash after a while.
I no longer see the onStatusChanged signal in the API documentation for the layer object now, so how can we accomplish this same thing in the new API? I do still see the same methodology I was using in the Tiled layer online example in the Samples App for 10.2.6, so I'm a little confused as to whether or not this signal is still around in the new version of the API. Here's some test code you can run to reproduce this issue. Click each of the buttons to replace the existing basemap and you will see no feedback from the onStatusChanged signal. This worked like a charm in 10.2.5.
import QtQuick 2.3
import QtQuick.Controls 1.2
import ArcGIS.Runtime 10.26
import ArcGIS.Extras 1.0
ApplicationWindow {
id: appWindow
width: 800
height: 600
title: "Test"
Map {
id: appMap
anchors.fill: parent
focus: true
ArcGISTiledMapServiceLayer {
url: "http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer"
}
}
Button {
anchors {
top: parent.top
right: parent.right
margins: 10
}
text: "Layer 1"
onClicked: addLayer("http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer")
}
Button {
anchors {
top: parent.top
left: parent.left
margins: 10
}
text: "Layer 2"
onClicked: addLayer("http://server.arcgisonline.com/ArcGIS/rest/services/Reference/World_Transportation/MapServer")
}
Button {
anchors {
bottom: parent.bottom
right: parent.right
margins: 10
}
text: "Layer 3"
onClicked: addLayer("http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer")
}
Button {
anchors {
bottom: parent.bottom
left: parent.left
margins: 10
}
text: "Layer 4"
onClicked: addLayer("http://server.arcgisonline.com/ArcGIS/rest/services/Canvas/World_Light_Gray_Base/MapServer")
}
function addLayer(url) {
try {
var baseLayerToInsert;
baseLayerToInsert = ArcGISRuntime.createObject("ArcGISTiledMapServiceLayer");
baseLayerToInsert.url = url;
bmLyrConnections.target = baseLayerToInsert;
appMap.insertLayer(baseLayerToInsert, 0);
appMap.removeLayerByIndex(1);
}
catch(err) {
console.log("BasemapPicker:setBaseLayer" + err.message);
}
}
Connections {
id: bmLyrConnections
onStatusChanged: {
console.log("BASEMAP STATUS: " + target.status);
if (target.status === Enums.LayerStatusInitialized) {
console.log("INITIALIZED");
}
else if (target.status === Enums.LayerStatusErrored) {
console.log(target.error);
}
}
}
}
