我尝试了.equals()
和==
,但没有帮助。我将所有标签存储在我自己的类的ArrayList中,它们具有JLabel。
如何获取ArrayList中标签的索引或其他内容?
我在使用ArrayList时遇到问题吗? MouseListener
private static MouseListener clicklvl1=new MouseListener() {
@Override
public void mouseClicked(MouseEvent e) {
for (int i=0;i<shahtars.size();i+=1){
if (e.getSource()==shahtars.get(i).uiShahtar){
IDofClickedObject=i;
}
}
if (IDofClickedObject!=-1){
if (counter == 0) {
shahtars.get(IDofClickedObject).uiShahtar.setIcon(new ImageIcon("E:\\aaa\\ShahtarLvL1(Clicked).png"));
counter = 1;
} else if (counter == 1) {
// uiShahtar.setIcon(new ImageIcon("E:\\aaa\\ShahtarLvL1.png"));
shahtars.get(IDofClickedObject).uiShahtar.setIcon(new ImageIcon("E:\\aaa\\ShahtarLvL1.png"));
counter = 0;
}
}
System.out.print("x "+shahtars.get(IDofClickedObject).uiShahtar.getX()+" y "+shahtars.get(IDofClickedObject).uiShahtar.getY());
}
我的课
class FillShahtar implements Cloneable {
static JLabel uiShahtar;
static int energy;
static double power;
static double speed;
String name;
最后一个
FillShahtar(int chose) {
switch (chose){
case 1:{
plankaDown = 1;
plankaUp = 11;
int xRand = (int) ( 0+Math.random()*1000);
int yRand =(int) (0+Math.random()*600);
int counter=0;
/////////////////////////debug/////////////////
System.out.print(xRand+" "+yRand+"\n");
//////////////////////////////////////////////
energy = (int) (plankaDown + Math.random() * plankaUp );
power = (int) (plankaDown + Math.random() * plankaUp );
speed = (int) (plankaDown + Math.random() * plankaUp );
uiShahtar = new JLabel();
uiShahtar.setIcon(new ImageIcon("E:\\aaa\\ShahtarLvL1.png"));
uiShahtar.setLayout(new FlowLayout());
uiShahtar.setSize(50,50);
uiShahtar.setLocation(xRand,yRand);
uiShahtar.setVisible(true);
uiShahtar.addMouseListener(clicklvl1);
// mainPanel.add(shahtars.get(counter).uiShahtar);
counter+=1;
break;
}
单击的图像必须更改图像,但只能更改最后一个标签。
答案 0 :(得分:1)
由于JLabel
继承了swing的Component
类,因此可以向每个可点击标签添加MouseListener
(或MouseAdapter
)。使用此EventListener,您可以找到单击的标签,如下所示:
JLabel l = new JLabel();
l.addMouseListener(new MouseAdapter() {
@Override
public void mouseReleased(MouseEvent e) {
JLabel clickedLabel = (JLabel) e.getComponent();
}
});
为了获取ArrayList中单击的标签的索引,请使用ArrayList提供的indexOf(Object)
方法:
int index = list.indexOf(clickedLabel);