AlpineQuest & OfflineMaps

When using AlpineQuest 1.4.17b (and earlier versions) on a Sony Z2 tablet, a grid of pale green and white square blocks always appears superimposed on the map. This seems to apply to any map type, whether or not stored locally. When panning across the map, the grid moves with the map but individual grid squares alternate between green and white; this results in a strange flickering effect. The same occurs (and is more obvious) when outside the bounds of the current map.

See attached screenshot for an example. The grid may not be immediately obvious due to the very pale green colour; the effect is much more obvious when panning.

I have experimented with various display options in the program, but have been unable to prevent appearance of this grid.

Hi and thanks for your report.
It looks like the same issue that this other report.
We may have found the problem, I'll let you know soon.
Best regards

Hi,

AlpineQuest wrote:It looks like the same issue that this other report.
We may have found the problem, I'll let you know soon.

That sounds like good news.
Best regards.

For what it's worth, the problem persists in 1.4.18. Please let me know if more information is needed to resolve the issue, or if help is needed with testing.

Best regards.

Thanks for the feedback. That's not a good news...
CRider, just in case you have a different problem, can you check if you have seen any changes with 1.4.18?

Interestingly, looking at your screen shot, I noticed that exactly every odd map tiles are lighter...

Hi,
I still have the overlay issue with AQ-1.4.18.
In my case, the dark overlay is not directly related with the map tiles.
As described in my own post, the dark overlay is always attached to the leftmost map tiles.
When I move the map, the dark overlay will be attached to the new leftmost map tiles.
See the attached screenshots.
Best regards.

Is it possible to give a timescale for resolving this issue please? The flicker caused when browsing maps is a significant usability annoyance; I'd be very happy to give more information as needed, or to help test a fix.

Thanks

+1

Samsung GalaxySII v1.4.18

An update will be available under one week with the ability to increase the quality of map images.
It won't be enabled by default right now (it uses much more memory than the current medium-quality images, that have been using until then), but I'll give instruction on how to active it. That should fix this issue.
Best regards

Hi again,
AQ 1.4.19 is definitively a great release.
The new setting fixes the issue I had.
Thanks.
Best regards.

Thanks a lot CRider for your feedback.
I didn't found the time until now, but here is some info on this issue:

Different sources may produce this "shade" behaviour:

- Some shade issues can come from the map itself, as shown below (the shade is visible in the app but also on the original map website). Unfortunately in this case, it cannot be corrected. - A shade can also be visible in the app on some devices, due to the default colour profile used in the application to draw the maps. This default colour profile has been chosen as a compromise of quality and memory usage. On most devices the map renders perfectly, but on some others a shade can be visible. In this case, the user can select an higher quality colour profile using the following user settings: If you don't have configured user settings previously, you can just put the attached file in the AlpineQuest folder (e.g. "/sdcard/alpinequest/").

Note that the application will then require more memory and will be more subject to "out of memory" crashes (64.22MB used instead of 59.25MB (+8.4%) on a 1920x1080 device, 38.81MB instead of 35.02MB (+10.8%) on a 480×800 device).