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b4j tutorial

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b4j tutorial

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Log in Register. What's new. Search forums. Log in. For a better experience, please enable JavaScript in your browser before proceeding. Thread starter Erel Start date Dec 1, Erel Administrator Staff member. Licensed User. This tutorial will cover the differences between the two libraries. Including remote databases and local databases. In order to connect to a database you need to get the database native jar driver and you need to know the connection string JdbcUrl and driver class. In order to add the native jar file you need to: 1.

Copy the file to the libraries folder internal or external. LoadLayout "1" MainForm. Show sql1. Initialize "com. InitializeSQLite File. AdditionalJar: sqlite-jdbc Do While RS. NextRow Log RS.Download Source Code. It allows creating WebApps that not only look great thanks to Googles Material Design, but can be programmed with the powerful free tool from Anywhere Software.

You can learn more about Google's Material Design from here. I started my journey into this framework some two months ago. You don't need to type in any HTML5 code yourself, you use the same VB like syntax and just develop your app like that. The content of this Bible.

Show WebApp has been compiled directly from source code that has been written in an object oriented way. Depending on the size of the screen, your app can appear different. Themes can be used to define the look of the components in your app as this uses color coding and intensities, zdepths of those components.

I am assuming that you have gone through my previous article Hello B4J. Developing these WebApps will be based on that tool. To be able to develop ABMaterial webapps, you however need to get a copy of the framework. A free version exist from this link. You can also view a live demo of this framework from think link. It is such an impressive tool and Bible.

Show here has been developed using it.

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It is very crucial however that anyone wanting to master this framework to please review the demo thoroughly. For now let's use the demo instructions to create a simple app. First, copy all library files like ABMaterial. Next, make a copy of the Templates folder and rename it to the name of your new app, let's say HelloABM. Go into the folder and rename both Template.

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You can also open the Template. Let's take a look at the AppStart method of the Template. You start compiled.The key to getting lots done is to make sure you have the right tools for the job. And when it comes to mobile development, that means choosing the right IDE for the particular app you want to make. Android Studio is great if you want to create something in-keeping with the Android aesthetic, or if you want to go the most common route to ensure maximum support.

Unity is perfect for making 3D games without having to hire an entire team of developers. And to me, Basic4Android is one of the very best options for when you want to make an Android app quickly. Before we go any further, note that Basic4Android is not a free piece of software. As that title suggests, the aim is to facilitate the fast and easy creation of apps. At the same time, it tries to do this without limiting you in any way as far as what your programs are capable of.

He explained to me in his own words what Basic4Android is all about:. Our task is to allow developers with any skill level to quickly develop real world applications. The IDE and framework will do their best to help you with getting your job done. With the vast range of libraries your app can do everything that Android is capable of.

Like I said at the start, choosing the right tool for the job is part of the challenge. But as someone who can use multiple IDEs, I still find myself coming back to B4A for a number of different tasks thanks to how simple and straightforward it is. Who remembers these? And there are no semi-colons to forget about! Java is also much more object oriented than Basic4Android.

This may be seen as a benefit by some and is useful for bigger projects. For a beginner though, it requires a little more work to get your head around. Likewise, creating global variables is much easier, so is writing strings, so is setting timers, using custom fonts…. In both cases, you would need to initialize the widget you were referencing but Basic4Android makes it much easier for you to do that just the once and then forget about it.

The same goes for debugging and testing. Pretty smart. The answer to this, on the whole, is yes. Basic4Android allows any user to create and share their own libraries which are written in Java.

b4j tutorial

Any code you can use with Android Studio, you can wrap into a library for B4A. That homescreen launcher, by the way, is something that would have taken me much longer to create had I gone a more traditional route.Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available. To create a button, you can instantiate one of the many classes that descend from the AbstractButton class. The following table shows the Swing-defined AbstractButton subclasses that you might want to use:.

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After that, this section shows you how to use specialized API to implement check boxes and radio buttons. As the ButtonDemo example shows, a Swing button can display both text and an image. In ButtonDemoeach button has its text in a different place, relative to its image. In most look and feels, the user can click a button by pressing the Alt key and the mnemonic. When a button is disabled, the look and feel automatically generates the button's disabled appearance.

However, you could provide an image to be substituted for the normal image. For example, you could provide gray versions of the images used in the left and right buttons. How you implement event handling depends on the type of button you use and how you use it.

Generally, you implement an action listenerwhich is notified every time the user clicks the button. For check boxes you usually use an item listenerwhich is notified when the check box is selected or deselected. Below is the code from ButtonDemo. The bold code is the code that would remain if the buttons had no images. At most one button in a top-level container can be the default button. The default button typically has a highlighted appearance and acts clicked whenever the top-level container has the keyboard focus and the user presses the Return or Enter key.

Here is a picture of a dialog, implemented in the ListDialog example, in which the Set button is the default button:.

How to Use Buttons, Check Boxes, and Radio Buttons

You set the default button by invoking the setDefaultButton method on a top-level container's root pane. Here is the code that sets up the default button for the ListDialog example:. The exact implementation of the default button feature depends on the look and feel. For example, in the Windows look and feel, the default button changes to whichever button has the focus, so that pressing Enter clicks the focused button.

When no button has the focus, the button you originally specified as the default button becomes the default button again. The JCheckBox class provides support for check box buttons. For example, you can specify images to be used in check boxes.

Check boxes are similar to radio buttons but their selection model is different, by convention. A group of radio buttons, on the other hand, can have only one button selected. A check box generates one item event and one action event per click. Usually, you listen only for item events, since they let you determine whether the click selected or deselected the check box.

Below is the code from CheckBoxDemo. Radio buttons are groups of buttons in which, by convention, only one button at a time can be selected. Other ways of displaying one-of-many choices are combo boxes and lists. Radio buttons look similar to check boxesbut, by convention, check boxes place no limits on how many items can be selected at a time. Because JRadioButton inherits from AbstractButtonSwing radio buttons have all the usual button characteristics, as discussed earlier in this section.

For example, you can specify the image displayed in a radio button.This has been the most difficult part for beginners to understand. Included is a extensive Demo application and the full source code of ABMfeedbackdemonstrating a lot of the functionality of ABMaterial. In itself, the apps are also some kind of tutorial. There is also an online demo at abmaterial.

Click here if you like to donate. This means it is free to use, but consider this: it took me already thousands of hours to program ABMaterial, all done in my free time early in the morning and deep into the night. Donators get the latest versions in their mailbox a couple weeks before the public, and an extra goodie now and then …. Support is nothing short of fantastic and the ABMaterial Framework is a testimonial in itself to that.

ABMaterial is a platform that allows WEB-development more efficient and increases the focus on contents and ergonomics. It will be easier to make the transition from desktop to WEB-development. The combination with Anywhere Software and ABMaterial is an example of how by simplifications, wins time and do not have to endure the complicated and time-consuming work and, moreover, unbeatable economic. This product is exactly what I needed! Paulo Gomes: I am no web designer, but have tried for several years to ceate my own site, each time searching for tools to achieve the exact look I desire, but never getting there… With ABMaterial, I have ALL the tools I need, plus the flexibility of B4J, to build the exact Website I have in mind and even more!

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ABMaterial has over 45 themeable controls and some useful helpers. ABMSocialShare 1. Like this: Like Loading Post to Cancel.

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