Yaron

Debugging worked fine for me in v10.2.2 and stopped working in v10.2.3. I'm sad to report that even after doing a fresh install of the recently released Delphi v10.3, I am still getting the 'port in use' error when trying to debug. Perhaps this may be related to the Android libraries updates introduced in v10.2.3? And yes, I'm testing devices running Android v4-v6, which may also be related.

@Markus Kinzler The project your linked to is my first try at writing a REST server, since the data-set it uses is so small, for simplicity I just used a flat DB file. My upcoming project is more of a small scale social network, so there will be: 1. Accounts 2. Content upload (text/images) linked to the accounts. 3. Content interaction (likes, shares) linked to content, etc. For this purpose I want a more solid and reliable DB back-end. Like suggested earlier in the thread, the client isn't connecting directly to the DB, it's connecting through a REST server, so the only DB user is the REST server. I don't think SQL syntax is that hard to learn and I have friends to consult with. Based on this should I go the firebird route or mORMot+SQLite3 ?

There are so many devices and versions of the OS in the user-space, what practices do you use to test your Delphi applications for Android?

@Arnaud Bouchez I've been looking at the mORMot samples for SQLite3: https://synopse.info/fossil/dir?ci=deb75010c0736e31&name=SQLite3/Samples Do you think I should investigate the first two samples?

I'm not sure I understand your answer, the project I intend on writing is not open-source. After reading a bit about both, I'm leaning toward FireBird. Other than the FireBird site itself, is there any related resources you would recommend I review?

To begin with, which database software should I install that would be the easiest (to install on windows) and connect to with Delphi. I previously installed MySQL for an unrelated project and didn't write any code for it, but I'm not sure if MySQL is overkill for my needs.

I wrote a small server backend using mars that manages a leaderboard (highscore) list for a game I wrote. If there's any interest, I will publish the source. In the same spirit and to gain some insight, I would be interested in seeing other real-world projects written using mars.

I created the repository here: https://github.com/bLightZP/marsGameServices

Works great!

@Rollo62 If you're referring to me, yes, everything is installed and it happens with a blank app. But there are definitely issues with upgrading over an existing version, I can list several glitches, but it's out of topic here.

I was able to debug Android application in v10.2.2, but then after installing v10.2.3 it stopped working, either the debug doesn't hook correctly (it never debugs) or it stalls on 'launching' and never continues. Pressing "cancel" at this point returns an error that the port is in use (I even read about how to change the port, but the error remained just showing a different port number). I suspect this may be related to the fact that I installed v10.2.3 ontop of v10.2.2 without doing a clean install (this resulted in a few other glitches as well).

I wrote a simple & elegant calculator for Android using Delphi Tokyo 10.2.3 and released the source code on GitHub: https://github.com/bLightZP/ElegantCalculator This sample demonstrates basic scalable Android UI, taking screen scale into account. I wrote a basic string math formula parser since I couldn't find anything free that would compile for Android. You can check out the compiled Elegant Calculator on the google play store: https://play.google.com/store/apps/details?id=com.inmatrix.ElegantCalculator

I use this code for the paths, it works for both Windows and Android UserDataPath := System.IOUtils.TPath.GetHomePath+System.IOUtils.TPath.DirectorySeparatorChar+clientName+System.IOUtils.TPath.DirectorySeparatorChar; cacheFolder := 'cache'+System.IOUtils.TPath.DirectorySeparatorChar; With regards to the UI, yes, I use high resolution source images so the same app will work on any resolution display and maintain a sharp & crisp image. Delphi does a real bad job at high quality image downscaling, but after a year of banging my head against the wall with multiple down-votes and even after offering a bounty on stackoverflow, I finally found a method that will scale the image in high quality using hardware on Android which I posted here: https://stackoverflow.com/questions/52989024/low-quality-delphi-user-interface-design-under-android-when-using-timage If you want to see how bad Delphi's GPU canvas is by default, look at this post: https://stackoverflow.com/questions/51157715/low-quality-downscale-interpolation-when-using-a-gpu-canvas-and-tcanvas-drawbitm

I actually reviewed two other formula parser, one was strictly windows and the other I thought I could convert, but after a few hours of work with it working perfectly under windows and having odd crashes under Android, I decided to just write something simple myself.

@John Kouraklis I guess it really depends on how the images are used. I use the resource approach where the images are elements in my UI (buttons, sprites, etc). Unlike windows which places all the resources in the executable, if you look into the installation folder on Android, you'll see that all the resource files are in their own folder as actual files, so the resource function is just re-routing to these files. I also use a caching mechanism in my apps where the images are scaled in high quality to the UI resolution and then saved uncompressed to speed up future loads.

When using the </> button in the text editor, it always defaults to HTML syntax highlighting. Can this be changed to Pascal by default?

Alternatively, you can store your images as resources (project / resources and images) and then use this function to load the images from the resource: procedure LoadImageFromResource(ResourceName : String; TargetBitmap : TBitmap); var rStream : TResourceStream; begin If TargetBitmap <> nil then Begin Try rStream := TResourceStream.Create(hInstance,ResourceName,RT_RCDATA); Except rStream := nil End; if rStream <> nil then Begin Try TargetBitmap.LoadFromStream(rStream); Finally rStream.Free; End; End; End; end; That way you don't care about paths.