好的,我已经设置了一些代码来创建一个简单的小覆盖窗口,用作我正在处理的程序的警报消息。第一次运行时一切正常,但尝试再次运行它会冻结整个事情,迫使我通过调试器或任务管理器终止它。我知道我做错了什么,我只是不确定是什么,因为我对Java的经验有限。
以下是我用来设置窗口并将其放在任务栏上方右下角的代码:
private static Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
public static JWindow alertWindow() {
JWindow newWin = new JWindow();
JPanel panel = new JPanel();
BufferedImage img = null;
try {
img = ImageIO.read(Main.class.getResource("/images/test.jpg"));
} catch (IOException e) {
e.printStackTrace();
}
JLabel imgLbl = new JLabel(new ImageIcon(img));
panel.add(imgLbl);
newWin.setContentPane(panel);
newWin.pack();
Insets scnMax = Toolkit.getDefaultToolkit().getScreenInsets(newWin.getGraphicsConfiguration());
int taskBar = scnMax.bottom;
int x = screenSize.width - newWin.getWidth();
int y = screenSize.height - taskBar - newWin.getHeight();
newWin.setLocation(x,y);
newWin.setVisible(true);
final PulseWindow pulseWin = new PulseWindow(newWin);
pulseWin.getWindow().addMouseListener(new MouseListener() {
@Override
public void mouseClicked(MouseEvent click) {
if(SwingUtilities.isRightMouseButton(click)) {
pulseWin.stopPulsing();
pulseWin.destroyPulse();
} else {
System.out.println(pulseWin.isPulsing());
if(pulseWin.isPulsing()) {pulseWin.stopPulsing();}
else {pulseWin.startPulse();}
}
}
@Override
public void mouseEntered(MouseEvent arg0) {}
@Override
public void mouseExited(MouseEvent arg0) {}
@Override
public void mousePressed(MouseEvent arg0) {}
@Override
public void mouseReleased(MouseEvent arg0) {}
});
pulseWin.startPulsing();
return newWin;
}
以下是我设置的代码,以引起用户的注意:
import javax.swing.JWindow;
public class PulseWindow {
private boolean pulse = true;
private boolean doPulse = true;
private Float floor = 0.50f;
private JWindow win;
public PulseWindow(JWindow win) {
this.win = win;
}
public void startPulsing() {
pulse = true;
boolean decreasing = true;
double inc2 = 0.03;
double current = win.getOpacity();
while(pulse) {
if(doPulse) {
if(decreasing) {
current = current - inc2;
if((float) current <= floor) {
current = floor;
win.setOpacity((float) current);
decreasing = false;
} else {
win.setOpacity((float) current);
}
} else {
current = current + inc2;
if((float) current >= 1.0f) {
current = 1.0;
win.setOpacity((float) current);
decreasing = true;
} else {
win.setOpacity((float) current);
}
}
} else {
current = 1.0;
win.setOpacity(1.0f);
decreasing = true;
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
win.setOpacity(1.0f);
}
public void destroyPulse() {
pulse = false;
win.dispose();
}
public boolean isPulsing() { return doPulse; }
public void setFloor(float floor) { this.floor = floor; }
public void stopPulsing() { doPulse = false; }
public void startPulse() { doPulse = true; }
public JWindow getWindow() { return win; }
}
无论如何,正如我所提到的,它在第一次使用时工作正常,但是只要您通过右键单击关闭窗口然后尝试稍后重新运行它(无论是通过调用startPulsing()
方法还是通过再次调用alertWindow()
使用新的JWindow完全重新初始化整个类,整个程序冻结。任何想法为什么会这样?
就像我说的那样,我仍然是Java的新手,所以如果你看到其他任何我做错了/效率低下的话,请随意指出它以便我能正确地做到这一点。 / p>
修改
我现在开始认为问题出在JWindows上。我为显示警报的不同方法设置了一些其他代码,虽然这次没有冻结,但它也无法正常工作。
public class AlertWindow extends JWindow {
private static Border compound = BorderFactory.createCompoundBorder(BorderFactory.createRaisedBevelBorder(), BorderFactory.createLoweredBevelBorder());
private static Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
public AlertWindow() {
JPanel panel = new JPanel();
panel.setBorder(compound);
panel.setBackground(Color.RED);
JLabel imgLbl = new JLabel("Enter Alert Msg Here!");
imgLbl.setFont(new Font(null,Font.BOLD,16));
panel.add(imgLbl);
setContentPane(panel);
pack();
this.addMouseListener(new MouseListener() {
@Override
public void mouseClicked(MouseEvent click) {
if(SwingUtilities.isLeftMouseButton(click)) {
scrollOff();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
scrollOn();
}
}
@Override
public void mouseEntered(MouseEvent arg0) {}
@Override
public void mouseExited(MouseEvent arg0) {}
@Override
public void mousePressed(MouseEvent arg0) {}
@Override
public void mouseReleased(MouseEvent arg0) {}
});
scrollOn();
}
public void scrollOn() {
Insets scnMax = Toolkit.getDefaultToolkit().getScreenInsets(getGraphicsConfiguration());
int taskBar = scnMax.bottom;
int x = screenSize.width - getWidth();
int yEnd = screenSize.height - taskBar - getHeight();
int yStart = screenSize.height;
setLocation(x,yStart);
setVisible(true);
int current = yStart;
while(current > yEnd) {
current-=2;
System.out.println(current);
setLocation(x,current);
try {
Thread.sleep(30);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void scrollOff() {
int x = screenSize.width - getWidth();
int yEnd = screenSize.height;
int yStart = this.getBounds().y;
setLocation(x,yStart);
int current = yStart;
while(current < yEnd) {
current+=2;
setLocation(x,current);
try {
Thread.sleep(30);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
setVisible(false);
}
}
就像脉冲窗口问题一样,它第一次按预期工作,然后在后续使用中中断。在这种情况下,唯一中断的是scrollOn()命令。它在不可见时滚动,然后在到达目的地后变为可见。位置的控制台输出清楚地显示它正在移动,但在它停止移动之前你无法看到它。
答案 0 :(得分:0)
编辑2:
回到感觉愚蠢......我发现了这个问题(实际上是在前一段时间找到它但忘了更新这个......)。最后问题是我只使用了runnable而没有将它放在new Thread()
对象中。出于某种原因,我认为runnable对象创建了自己的新线程,但是一旦我弄清楚我的错误,这是一个简单的修复。显然,我还有很长的路要走Java ...
修改强>
好的,现在我很生气......显然,如果你试图从某种动作监听器中运行它,它仍然会中断。我最新版本的PulseAlert类(如下所示)调用PulseWindow类,原始答案如下所示:
public class PulseAlert {
private static Border compound = BorderFactory.createCompoundBorder(BorderFactory.createRaisedBevelBorder(), BorderFactory.createLoweredBevelBorder());
private static Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
public void runAlert() throws InterruptedException {
final PulseWindow pulseWin = new PulseWindow(alertWindow());
pulseWin.getWindow().addMouseListener(new MouseListener() {
@Override
public void mouseClicked(MouseEvent click) {
if(SwingUtilities.isRightMouseButton(click)) {
pulseWin.stopPulsing();
pulseWin.destroyPulse();
} else if(SwingUtilities.isLeftMouseButton(click) && pulseWin.isPulsing()) {
pulseWin.stopPulsing();
} else if(SwingUtilities.isLeftMouseButton(click) && !pulseWin.isPulsing()) {
pulseWin.startPulsing();
}
}
@Override
public void mouseEntered(MouseEvent arg0) {}
@Override
public void mouseExited(MouseEvent arg0) {}
@Override
public void mousePressed(MouseEvent arg0) {}
@Override
public void mouseReleased(MouseEvent arg0) {}
});
try {
pulseWin.startPulse();
} catch (Exception e) {
e.printStackTrace();
}
while(pulseWin.pulserActive()) {
Thread.sleep(100);
}
System.out.println("done with second SW");
}
public static JWindow alertWindow() {
System.out.println("Start");
JWindow newWin = new JWindow();
JPanel panel = new JPanel();
panel.setBorder(compound);
panel.setBackground(Color.RED);
JLabel imgLbl = new JLabel("Enter Alert Msg Here!");
imgLbl.setFont(new Font(null,Font.BOLD,16));
panel.add(imgLbl);
newWin.setContentPane(panel);
newWin.pack();
Insets scnMax = Toolkit.getDefaultToolkit().getScreenInsets(newWin.getGraphicsConfiguration());
int taskBar = scnMax.bottom;
int x = screenSize.width - newWin.getWidth();
int y = screenSize.height - taskBar - newWin.getHeight();
newWin.setLocation(x,y);
newWin.setVisible(true);
return newWin;
}
}
以下是我如何调用警报窗口 - 如果我愿意,可以反复调用,只要它在动作监听器之外。
PulseAlert alertPulse = new PulseAlert();
alertPulse.runAlert();
上面的代码可以完美地运行,直到放入某种动作监听器,例如:
trayIcon.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
alertPulse.runAlert();
} catch (InterruptedException e1) {
e1.printStackTrace();
}
}
});
从动作监听器调用runAlert()
方法后,整个事情就像以前一样冻结。直到那时运行完美。是什么原因引起了这个?这是Java中的错误还是我做错了什么?
原始答案:
好的,我现在觉得很傻。我需要做的就是解决这个问题,将startPulsing()
内容放入一个新的runnable中,一切正常,并且我需要多次。
public void startPulsing() throws Exception {
new Runnable() {
@Override
public void run() {
pulse = true;
win.setVisible(true);
boolean decreasing = true;
double inc = 0.05;
double current = win.getOpacity();
while(pulse) {
if(doPulse) {
if(decreasing) {
current = current - inc;
if((float) current <= floor) {
current = floor;
win.setOpacity((float) current);
decreasing = false;
} else {
win.setOpacity((float) current);
}
} else {
current = current + inc;
if((float) current >= 1.0f) {
current = 1.0;
win.setOpacity((float) current);
decreasing = true;
} else {
win.setOpacity((float) current);
}
}
} else {
current = 1.0;
win.setOpacity(1.0f);
decreasing = true;
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
win.setOpacity(1.0f);
}
}.run();
}