Category Archives: Programming

If you are running into this problem, it will be because Android Studio has this quirk where the constraint folder is not in the android directory structure but outside it. Let’s start from the beginning. The libraries are all in the /User/<username>/Library/Android/sdk/extras/android/m2repository/com/android/support/ However, constraint sits in a slightly different place. It is at /User/<username>/Library/Android/sdk/extras/m2repository/com/android/support/ Note the… Read More »

If you are running code like this: try { PackageInfo myInfo = getPackageManager().getPackageInfo(getPackageName(),0); versionName = myInfo.versionName; verCode = myInfo.versionCode; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } TextView myText = (TextView)findViewById(R.id.textView2); myText.setText(versionName + ” – ” + verCode); but the output is not what you are expecting, the chances are you are using gradle to build… Read More »

If you are using Android Studio and want to emulate on a Galaxy S6 or any other phone in the S range, you can download the skin from http://developer.samsung.com/galaxy/emulator-skin/s To install it, check out this video here: https://www.youtube.com/watch?v=sSc9D4rrOxw Go to 3:24 of the video to see how to install it in Android Studio.  

To rewrite history (not usually a good thing to do) you can do the following: git reset –hard <commit hash> git rebase -i HEAD~2 (the 2 goes back 2 commits) git push origin +master refresh github and you should see your commits disappear.

Confused about how callbacks work? Check out this really neat example. def say_hello(value, callback): print value callback() def say_name(): print “Fra” say_hello(“ciao”, say_name) Ref: https://bytesforlunch.wordpress.com/2012/03/15/simple-callback-implementation-in-python/

This site http://www.flaticon.com has a whole bunch of cool svg for download. SVG stands for Scalable Vector Graphics and uses XML to draw images that do not lose resolution when scaled up. To test your SVG, this site here is very handy https://www.w3schools.com/html/tryit.asp?filename=tryhtml_svg_circle

Here is a neat article explaining the Slow Loris attack. https://www.deepdotweb.com/2017/01/19/single-computer-dos-slow-loris-attack/

It’s a neat and powerful command that all *nix users should know. >> grep -rn “keyword” * This does a search for the keyword. * = all files -r = recursive (for all child directories) -n = show line numbers