Java 如何在JLabel中同时设置setLocation和setText？
在我的代码的try块中，setText（）或setLocation（）分别工作良好，如下所述：Java 如何在JLabel中同时设置setLocation和setText？,java,jlabel,sleep,settext,Java,Jlabel,Sleep,Settext,在我的代码的try块中，setText（）或setLocation（）分别工作良好，如下所述： .................... label.setText(name[i]); label.setLocation((label.getLocationOnScreen().x+50),0); Thread.sleep(time[i]);
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
.........
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
...............
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label.setText(name[i]);
Thread.sleep(time[i]);
....................
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
.........
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
...............
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label.setText(name[i]);
Thread.sleep(time[i]);
....................
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
....................
label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
....................
label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
....................
label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
class Move {
JFrame frame = new JFrame();
JLabel label = new JLabel("Journey");
static int x=0;
public Move() {
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setSize(800,600);
frame.setLayout(new GridLayout());
frame.add(label);
label.setLocation(0, 0);
frame.setVisible(true);
doAll();
}
void doAll(){
Thread t = new Thread(new Runnable() {
@Override
public void run() {
try{
String[] name={"Name 1","Name 2","Name 3","Name 4","Name 5","Name 6","Name 7","Name 8","Name 9","Name 10"};
int time []={2000,1000,2000,1000,2000,1000,2000,1000,2000,1000};
for (int i=0; i<10; i++){
label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
}
}catch(Exception ae){
}
}
});
t.start();
}
public static void main(String[]args){
new Move();
}
}
导入java.awt.GridLayout；
导入javax.swing.JFrame；
导入javax.swing.JLabel；
阶级运动{
JFrame=新JFrame（）；
JLabel标签=新JLabel（“旅程”）；
静态int x=0；
公共行动{
frame.setDefaultCloseOperation（JFrame.DISPOSE_ON_CLOSE）；
框架。设置尺寸（800600）；
frame.setLayout（新的GridLayout（））；
框架。添加（标签）；
label.setLocation（0,0）；
frame.setVisible（true）；
doAll（）；
}
void doAll（）{
线程t=新线程（新的可运行线程（）{
@凌驾
公开募捐{
试一试{
字符串[]名称={“名称1”、“名称2”、“名称3”、“名称4”、“名称5”、“名称6”、“名称7”、“名称8”、“名称9”、“名称10”}；
int time[]={200010002000100010001000200010001000100010002000100010001000100010001000200020001000100010001000200020002000100010001000100020002000100010001000200020002000100010001000100020002000200020001000100020002000200020001000100010002000200020002000100010001000；
对于（int i=0；i，框架的LayoutManager似乎正在为您设置标签的位置
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
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您需要做的是将布局设置为空：
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
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frame.setLayout(null);
这将使框架不会试图自行布局组件
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
那你就可以了
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
label.setLocation((label.getLocationOnScreen().x+50),0);
然而，没有布局并不理想，但是GridLayout
也不能满足您的需求
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
原因：GridLayout
将始终按照您编写的“container.add（component）
”语句的顺序对组件进行排序。除了为之前的所有位置插入虚拟组件外，您不能将组件放置在特定位置
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
您可能需要尝试GridBagLayout
。在GridBagLayout
中，您在关键事件上要做的就是更新动态面板的位置，它将显示在固定面板顶部的该位置。您可以在JPanel上绘制图像并移动图像，而不是尝试移动Swing组件
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
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这是我创建的GUI
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
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您必须通过调用SwingUtilities invokeLater方法来启动Swing应用程序。此方法将所有Swing组件的创建和使用置于
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
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>P>每当你试图协调2个或更多数组时，你应该考虑创建一个模型类。我创建了一个腿类来保存名字和延迟。这样，我只需要在旅程类中创建一个列表。
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
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我从JPanel创建了DrawingPanel。始终在JPanel上创建GUI。永远不要直接在JFrame上创建GUI
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
在单独的Runnable、Thread或Swing计时器中运行动画。GUI在其自己的线程中运行，动画代码必须在不同的线程中运行，或者阻止GUI更新
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
....................
由于动画在单独的线程中运行，因此绘图面板中的支腿设置包含在SwingUtilities invokeLater方法中。这确保绘图在事件调度线程（EDT）上进行
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
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当我创建JFrame时，我在JFrame中添加了一个WindowListener，这样我就可以检测到窗口关闭，并在退出程序之前停止动画
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
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这是密码
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label.setText(name[i]);
label.setLocation((label.getLocationOnScreen().x+50),0);
Thread.sleep(time[i]);
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package com.ggl.testing;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class ImageMove implements Runnable {
private JFrame frame;
private JourneyRunnable journeyRunnable;
public static void main(String[] args) {
SwingUtilities.invokeLater(new ImageMove());
}
@Override
public void run() {
frame = new JFrame("Image Move");
frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent event) {
exitProcedure();
}
});
DrawingPanel drawingPanel = new DrawingPanel();
frame.add(drawingPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
journeyRunnable = new JourneyRunnable(drawingPanel, new Journey());
new Thread(journeyRunnable).start();
}
public void exitProcedure() {
journeyRunnable.setRunning(false);
frame.dispose();
System.exit(0);
}
public class DrawingPanel extends JPanel {
private static final long serialVersionUID = -8498462824787395933L;
private int xPos, yPos, width, height;
private Leg leg;
public DrawingPanel() {
this.width = 100;
this.height = 50;
this.xPos = 0;
this.yPos = (200 - height) / 2;
this.setPreferredSize(new Dimension(800, 200));
}
public void setLeg(Leg leg) {
this.leg = leg;
this.xPos += 10;
repaint();
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.WHITE);
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(Color.ORANGE);
g.fillRect(xPos, yPos, width, height);
if (leg != null) {
g.setColor(Color.BLACK);
centerString(g, new Rectangle(xPos, yPos, width, height),
leg.getName(), g.getFont());
}
}
/**
* This method centers a <code>String</code> in a bounding
* <code>Rectangle</code>.
*
* @param g
* - The <code>Graphics</code> instance.
* @param r
* - The bounding <code>Rectangle</code>.
* @param s
* - The <code>String</code> to center in the bounding
* rectangle.
* @param font
* - The display font of the <code>String</code>
*
* @see java.awt.Graphics
* @see java.awt.Rectangle
* @see java.lang.String
*/
public void centerString(Graphics g, Rectangle r, String s, Font font) {
FontRenderContext frc = new FontRenderContext(null, true, true);
Rectangle2D r2D = font.getStringBounds(s, frc);
int rWidth = (int) Math.round(r2D.getWidth());
int rHeight = (int) Math.round(r2D.getHeight());
int rX = (int) Math.round(r2D.getX());
int rY = (int) Math.round(r2D.getY());
int a = (r.width / 2) - (rWidth / 2) - rX;
int b = (r.height / 2) - (rHeight / 2) - rY;
g.setFont(font);
g.drawString(s, r.x + a, r.y + b);
}
}
public class JourneyRunnable implements Runnable {
private boolean running;
private DrawingPanel drawingPanel;
private Journey journey;
public JourneyRunnable(DrawingPanel drawingPanel, Journey journey) {
this.drawingPanel = drawingPanel;
this.journey = journey;
this.running = true;
}
@Override
public void run() {
while (running) {
Leg leg = journey.getLeg();
setLeg(leg);
sleep(leg);
}
}
public void setLeg(final Leg leg) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
drawingPanel.setLeg(leg);
}
});
}
private void sleep(Leg leg) {
try {
Thread.sleep(leg.getDelay());
} catch (InterruptedException e) {
}
}
public void setRunning(boolean running) {
this.running = running;
}
}
public class Journey {
private int index;
private List<Leg> legs;
public Journey() {
this.legs = new ArrayList<>();
this.legs.add(new Leg("Name 1", 2000L));
this.legs.add(new Leg("Name 2", 1000L));
this.legs.add(new Leg("Name 3", 2000L));
this.legs.add(new Leg("Name 4", 1000L));
this.legs.add(new Leg("Name 5", 2000L));
this.legs.add(new Leg("Name 6", 1000L));
this.legs.add(new Leg("Name 7", 2000L));
this.legs.add(new Leg("Name 8", 1000L));
this.legs.add(new Leg("Name 9", 2000L));
this.legs.add(new Leg("Name 10", 1000L));
this.index = 0;
}
public Leg getLeg() {
Leg leg = legs.get(index);
index = ++index % legs.size();
return leg;
}
}
public class Leg {
private final String name;
private final long delay;
public Leg(String name, long delay) {
this.name = name;
this.delay = delay;
}
public String getName() {
return name;
}
public long getDelay() {
return delay;
}
}
}
你的回答很有效，也很有教育意义。