如何制作分辨率免费的应用程序

Question

I have set 320x480 size for canvas/widget of app. How can I make it resolution free.I have to draw some tips on particular location using AbsoluteLayout.If I change size of canvas/widget then the tips are displaying at wrong coordinates.

Answer 1

You should not work with absolute layout. Learn how to use other layout managers in Java. It can look complicated at the beginning but it's your only hope to get a resizable application without all the burden of managing size by yourself. Layout managers are precisely done to handle components positionning whatever the size of the container is.

The 3 basics layout managers are:

• BorderLayout
• GridLayout
• FlowLayout

A very usefull layout manager is BoxLayout (though the constructor is weird).

Here is a good docs from SUN about layout managers .

When you master this, and it's not so difficult, you can build almost any application in swing.

And if you work with custom components, I mean JPanel where you overrided paintComponent, then you should consider 2 options:

1. Not to scale at all for performance reasons,
2. Scale using AffineTransform on your graphics. But this is a different topics, your questions seemed more general about swing components.

Oh, and by the way, I think you should really accept answers from people and vote for what answer helped you. It's the minimal way to thank people here.