java 如何每秒移动jlabel？
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how to move jlabel every second?
提问by mopr mopr
i try to move it to the right(x++) every seconds
我尝试每秒钟将它向右移动（x++）
i try to move it with thread..
我试着用线移动它..
- how to do it? (and can see it move every second)
- there are another way to do it without use thread?
- what layout manager that i should use?
- 怎么做？（并且可以看到它每秒移动一次）
- 还有另一种方法可以在不使用线程的情况下做到这一点吗？
- 我应该使用什么布局管理器？
heres i try..
继承人我尝试..
public class help {
JFrame frame = new JFrame();
JLabel label = new JLabel("target");
public help() {
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setSize(800,600);
frame.setLayout(new GridLayout());
frame.add(label);
label.setPreferredSize(new Dimension(100,100));
label.setLocation(400, 300);
frame.getContentPane().validate();
frame.repaint();
frame.setVisible(true);
mysterious();
}
void mysterious(){
////////////////////////////////
// part of edit responding David kroukamp
Thread t = new Thread(new Runnable() {
@Override
public void run() {
try{
for (int z=0; z<10; z++){
label.setLocation((label.getLocationOnScreen().x+10), label.getLocationOnScreen().y);
Thread.sleep(1000);
}
}catch(Exception ae){
}
}
});
t.start();
//////////////////////////////
}
public static void main(String[]args){
new help();
}
}
thanks a lot for any kind of help
非常感谢任何形式的帮助
回答by David Kroukamp
- Class names begin with capital letters i.e
Help - Swing components should be created and modified on
Event Dispatch Thread A new
Threadis created like this:Thread t = new Thread(new Runnable() { @Override public void run() { //work here } }); t.start();//start thread
- 类名以大写字母开头，即
Help - 应在以下位置创建和修改 Swing 组件
Event Dispatch Thread 一个新
Thread的创建是这样的：Thread t = new Thread(new Runnable() { @Override public void run() { //work here } }); t.start();//start thread
however I'd suggest a Swing Timeras it runs on EDT:
但是我建议在Timer运行时使用 Swing EDT：
EDIT:
编辑：
As per your questions I suggest using a Timerthe creating thread point was for general knowledge.
根据您的问题，我建议使用Timer创建线程点作为一般知识。
The probelm is the Thread is not run on EDT Thread of your swing GUI where as a Timerdoes:
问题是线程未在您的摆动 GUI 的 EDT 线程上运行，而 aTimer是：
int delay = 1000; //milliseconds
ActionListener taskPerformer = new ActionListener() {
int count=0;
public void actionPerformed(ActionEvent evt) {
if(count==10) {//we did the task 10 times
((Timer)evt.getSource()).stop();
}
label.setLocation((label.getLocationOnScreen().x+10), label.getLocationOnScreen().y);
System.out.println(SwingUtilities.isEventDispatchThread());
count++;
}
};
new Timer(delay, taskPerformer).start();
Reference:
参考：
回答by vels4j
Here is an Swingexample of a simple puzzle game.
这是Swing一个简单的益智游戏的例子。
When you press Pausebutton the title will get animate until you release the pause. Similarly you can use it for JLabel. Source code is also attached.
当您按下Pause按钮时，标题将变为动画，直到您松开暂停。同样，您可以将其用于JLabel. 还附上了源代码。
Hope that can help you much.
希望对你有很大帮助。
回答by Scott Loftin
If you put that part of the constructor in a thread, then you can call thread.sleep(1000);(1000 milliseconds for a 1 second delay) and then refresh, which should move the target across the screen.
如果你把构造函数的那部分放在一个线程中，那么你可以调用thread.sleep(1000);（1000 毫秒，延迟 1 秒）然后刷新，这应该在屏幕上移动目标。
