出于某种原因，如果突出显示“文本区域”文本，背景会变成黑色，因此使文本不可读，同样，当我选择底部的单选按钮时（请参见所附图片），整个文本区域会变黑，再次使文本变黑看不懂！有人知道它为什么这样做吗？
这是我的文本区域的代码...
//Text area that displays the games instructions
textAreaInstructions = new JTextArea(
"To play choose your difficulty and then click start. \n\n" +
"The aim of the game is to select the 'golden' rectangle, you will be presented with 4 \n" +
"rectangles and you must choose one that has height and width proportions that represent \n" +
"the golden ratio: 1.618. If you're not too sure what a golden rectangle looks like it's \n" +
"best you start on beginner until you get the hang of it! \n\n" +
"For every correctly identified golden rectangle you score 1 piece of 'Gold', however if you \n" +
"incorrectly identify a golden rectangle, 1 piece of 'Gold' will be taken away from your \n" +
"score. Remember, you only have 30 seconds, so collect as much 'Gold' as you can, good luck! \n");
c.add (textAreaInstructions);
textAreaInstructions.setBounds(130, 110, 600, 200);
textAreaInstructions.setEditable(false);
textAreaInstructions.setBackground( new Color(0, 0, 0, 0) ); //Transparrent background to text area
最佳答案
摇摆不了解透明的颜色。相反，您必须使用setOpaque并将其传递给false
textAreaInstructions.setEditable(false);
//textAreaInstructions.setBackground( new Color(0, 0, 0, 0) );
textAreaInstructions.setOpaque(false);
对于example，您也可以将
JLabel的文本包装在HTML中。 JLabel默认是透明的