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Android Question Simple OSM Viewer
- Thread starter Sergey_New
- Start date
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- Tags
- osm
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Everything is displayed on my emulator and on the device. I do not understand what is going on? 
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Shows London map on Samsung Ultra 21. +/- doesn't do anything, but zoom gesture works Have you put SetApplicationAttribute(android:usesCleartextTraffic, "true") in manifest project file?
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bparent, thank God, at least it works for you
Added to the manifest - nothing has changed.
Checked the code in B4J. The scale is changed both by +/- and by the mouse wheel.
Attached the project on B4J.
I have the same.
No, I didn't put it in..
Added to the manifest - nothing has changed.
Checked the code in B4J. The scale is changed both by +/- and by the mouse wheel.
Attached the project on B4J.
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I've never used WebView and I am no good on webby stuff but it seems that in B4A after WebView1.LoadHtml is called it raises the PageFinished event but with a Url of "file:///".
On the other hand the project on B4J works fine but it doesn't seem to raise the PageFinished event at all
I don't understand what's happening here
On the other hand the project on B4J works fine but it doesn't seem to raise the PageFinished event at all
I don't understand what's happening here
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If you target SDK 27 it displays the map, although the +/- buttons don't seem to work. Target SDK 28 or higher and it doesn't work. I assume some permissions or other security was added at 28 but at the moment I haven't identified what it might be. You will need to uninstall the app before loading it to target a lower SDK.
Also nowadays it really should be using https rather than http - just add the 's' and it works anyway.
Also nowadays it really should be using https rather than http - just add the 's' and it works anyway.
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You are using Javascript in the HTML but did not added any javascript possibility to your app?`WHY?
I get this message when using webviewextras
Are you sure the javascript does work on android in a limited webview? Note that webview is not compareable with a Webbrowser on Android
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I'm probably wrong about just adding 's' to make it https working but I got it working targetting SDK 30 by adding ClearText to the manifest.
B4X:
' 28 - Non-ssl (non-https) communication is not permitted by default.
' It can be enabled in B4A v9+ by adding this line to the manifest editor:
CreateResourceFromFile(Macro, Core.NetworkClearText)
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?
You need to declare the css style sheet, also it is a very old api, the documentation is not online and you should download it from here.
You need to declare the css style sheet, also it is a very old api, the documentation is not online and you should download it from here.
HTML:
<html>
<head>
<meta charset="utf-8" />
<title>OpenStreetMap</title>
<link rel="stylesheet" href="https://openlayers.org/api/2.13.1/theme/default/style.css" type="text/css">
<style>html, body, #map {width: 100%;height: 100%;margin: 0;padding: 0;}</style>
</head>
<body>
<div id="mapdiv"></div>
<script src="https://openlayers.org/api/2.13.1/OpenLayers.js"></script>
<script>
map = new OpenLayers.Map("mapdiv");
map.addLayer(new OpenLayers.Layer.OSM());
var lonLat = new OpenLayers.LonLat(${CenterLong}, ${CenterLat})
.transform(
new OpenLayers.Projection("EPSG:4326"),
map.getProjectionObject()
);
var markers = new OpenLayers.Layer.Markers( "Markers" );
map.addLayer(markers);
markers.addMarker(new OpenLayers.Marker(lonLat));
map.setCenter (lonLat, ${zoom});
</script>
</body></html>
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