Is there a possibility using Java Swing to add in a existing running Swing application a button as an example. The action of the button to have a call to an existing method in that application. Maybe using xml to define the structure of the button.
You can do it. When any action triggered you can create the button and set the listener for it.
But best practice is to create the button and listener at the build time. Here you need to hide/set visibility to false initially and when any action triggered, set the visibility to true.
Related
I'm currently learning Android development from a book and I've come to the topic of radio buttons. The book explains that you handle radio button clicks (within a RadioGroup) using setOnCheckedChangeListener() with an anonymous OnCheckedChangeListener class as an argument.
However, according to the Android documentation you can set the onClick attribute on radio buttons to simply refer to a method of your design and handle clicks there.
Is there a reason to choose one over the other? What I'm asking is if there is some difference between the two that I'm missing, or if they simply both do the same thing.
setOnCheckedChangeListener() is listening to checked state, so if it is changed programmatically your code will be triggered. onClick listener only detects changes on checked state only if the element is clicked.
I want to make a touch on a button in a layout and also that touch is done by program using injectinputevent method, so that button is clicked even without touching it.
You can use the performClick method on that button.
Call this view's OnClickListener, if it is defined. Performs all normal actions associated with clicking: reporting accessibility event, playing a sound, etc.
You can call if from another method:
your_button.performClick();
In Swing it was possible to connect action to a button and button was reflecting action's parameters like icon, enableness, text and so on.
Is this also possible with ControlsFX' Action?
If yes then how?
For an existing button you can use ActionUtils.configureButton(action, button).
To create a button bound to the action, use ActionUtils.createButton(action)
Am designing an application in java using netbeans, in which i need to call a "Save" function by clicking on the save item on the menu bar. Am able to call the function by having a button inside the main panel, but am not able to call the function when i click on the menu bar or any where else. How can this be done?
Start with How to Use Menus, then see this example of How to Use Actions.
First check if you have defined an actionPerformed() method for the menuitem from which you are trying to call the method. If not, then you can define an actionPerformed() method by right clicking on the menu item in the design frame and select "events>actionperformed" from the context menu. Also take care that the menu items objects should not be a static field.
I am working on a project and part of ask for:
add a CheckBox menu item Decrypt which can be checked for decrypt or unchecked for Encrypt. This item should be tied to the toggle button in the GUI. Both should reflect the current status of encrypting/decrypting in the application
which is I not sure how to begin with
well to start with, have you created a gui with a JCheckbox and a JToggleButton? If so start by getting your gui created, i'm assuming you are using swing??
Then add an action listener to the checkbox and the togglebutton. You can find a tutorial on action listeners here. Then in the action listener you can check the state of the checkbox and togglebutton and adjust as necessary.
Give this a shot, and post here if you run into problems.