Delphi Tips and Tricks

Delphi is a great friend when you have to develop an Android/iOS app easily and quickly; once you have created an application you can distribute it using the Play Store (Android) or the Play Store (iOS). A very efficient tactic to gain money using your application is placing it in the stores at a low price or, better, place your app for free and put advertisement on it. Of course we can do it easily with Delphi. Let's do it step by step! AdMob (by Google) is a mobile advertising company that works for Android and iOS apps; we are going to use this. First of all visit the official website and click Sign up on the top. You need to have a valid gmail account. AdMob requires: AdWords: if you already have an account you're fine, otherwise a new one will be created for you. AdSense: this is used to show advertisements ( ads ) on websites (Google ad banners come from here) and on mobile devices. You need an active account. If you don't already have an AdSens...

I have seen many times people asking for a working solution about the function plot and now I am showing you a very easy step-by-step guide! :) First of all I need to say that this method is able to plot any kind of function f(x) for example f(x) = x^2 - 2x - 1 . Let's see what we need: Create a new project and drop a container. It can be what you prefer, for example a TPanel or a TRectangle. I am going to use the latter but it's your choice, the important thing is that you can use the OnPaint event. It is optional that you have a function parser (Parser10 or tbcParser) to parse a function. It is not needed but without this you'll have to hard code the function every time. Later we'll discuss about this. I'll create an example with a new Firemonkey HD From (File > New > Multi-Device Application). Drop a TRectangle and align it to client; in the object inspector on the left expand the Fill property and change the Color to white. Add the following cod...

Delphi Tokyo 10.2 has an awesome feature: Linux support! From now we are able to deploy our applications into a linux server. A very nice set-up guide for the linux environment can he found here ; instead if you want to be able to use firemonkey and target a linux dekstop client (Ubuntu 16.04 LTS for example) check the FmxLinux project. With Delphi 10.2 we can create a REST Server (or simply a WebServer based on Indy) and export it as stand-alone console app or as apache module . For example, let's create a basic webserver: Go on File > New > Other > WebBroker > WebBroker Application. Select Linux and then Apache module. In the last page we are asked to input the module name, which is very important. We want to keep things very easy, so I won't focus on the WebModule (with Actions) and other things, you can find a lot of information on the doc . First of all start your linux server (hosted on Ubunutu, Virtualbox or whatever) and run the PAServer. Select Linux...

Making Delphi apps with firemonkey is really awesome. I am going to show you a little step-by-step guide that will explain you how to create a fullscreen splash intro on Firemonkey. Please note that s plash screens are supported only on Android, iOS doesn't need them. Let's get started! Create a new Firemonkey application (File > New > Multi-Device App) or load a project that you already have. Select Andorid as Target Platform Go under Project > Options and then Application and you are going to see this: Using Gimp, Photoshop, Paint or whatever you need to create some png icons with the given sizes or, if you don't care, just leave the default ones. The splash screen is a different story. Create a new file with 2 pixel less than the needed one. For example you won't have to create a 426x320 but a 424x318 and then open this file with draw9patch . It is located at {delphi_install_folder}\Embarcadero\Studio\19.0\PlatformSDKs\android-sdk-windows\too...