Well, it depends on your needs. Very often I keep my references to widgets in activity (as a class fields) – and set them in onCreate method. I think that is a good ideaProbably the reason for your nulls is that you are trying to call findViewById() before you set contentView() in your onCreate() method – please check that.
Model-View-Presenter In MVP, the Presenter contains the UI business logic for the View. All invocations from the View delegate directly to the Presenter. The Presenter is also decoupled directly from the View and talks to it through an interface. This is to allow mocking of the View in a unit test. One common attribute of … Read more
The following bit of code does what you ask for. Just make sure that you assign enough space so that the text on the button becomes visible The X and Y (two first parameters of the GridLayout constructor) specify the number of rows and columns in the grid (respectively). You may leave one of them … Read more
You should look up javafx. You can attach a css file to a GUI. it is fairly easy to use. I can give you some example code if you want. These are some good tutorials on how to use it: https://www.youtube.com/watch?v=FLkOX4Eez6o I use eclipse to create a css file right click the project -> select … Read more
If you are looking for a C++ library, then Qt basically does what you are looking for. If you want to stick to pure C, then Qt is not an option. As a C framework you could use GTK+, it works on Linux, Windows and OS X.
DTO is an abbreviation for Data Transfer Object, so it is used to transfer the data between classes and modules of your application. DTO should only contain private fields for your data, getters, setters, and constructors. DTO is not recommended to add business logic methods to such classes, but it is OK to add some … Read more
Assuming you are talking about the ActionEvent class, then there is a big difference between the two methods. getActionCommand() gives you a String representing the action command. The value is component specific; for a JButton you have the option to set the value with setActionCommand(String command) but for a JTextField if you don’t set this, … Read more
No. You can use HTML in the label, but then you must hard code the break tag. A better approach is to use a JTextArea and turn wrapping on. You can change the background,foreground, font etc. of the text are to make it look like a label. Note, this answer is outdated as of at … Read more
Guigarage provides 3 out-of-the-box styles. AquaFX, a native look & feel for Mac OSX AeroFX, that gives you the look of a Windows Forms app for Windows 7 Flatter, a flat-design gui theme Feel free to complete this list by answering the question.
For consistency remove any borders and use the height for the <hr> thickness. Adding a background color will style your <hr> with the height and color specified. In your stylesheet: Or inline as you have it: