Question

实际上我正在开发一个项目，按钮点击产生对话，并通过Thread.sleep（5000）在5秒内处理它我在运行方法

下写了以下内容

void showpopup(String p, String t) throws IOException {
    JPanel app = new JPanel();
    popup = new JFrame();
    // app.setSize(300,400);
    GridBagConstraints c1 = new GridBagConstraints();
    app.setLayout(new GridBagLayout());
    app.setVisible(true);
    app.setBackground(new Color(39, 170, 225));

    popup.setUndecorated(true);
    popup.setSize(300, 100);
    popup.setLayout(new GridBagLayout());
    GridBagConstraints constraints = new GridBagConstraints();
    JLabel header = new JLabel();
    header.setText(p);
    c1.gridx = 0;
    c1.gridy = 0;
    c1.weightx = 1.0f;
    c1.weighty = 1.0f;
    c1.insets = new Insets(5, 5, 5, 5);
    c1.fill = GridBagConstraints.BOTH;
    header.setFont(new Font("comfortaa", Font.BOLD, 15));
    app.add(header, c1);

    constraints.gridx = 0;
    constraints.gridy = 0;
    constraints.weightx = 0.3f;
    constraints.weighty = 0.3f;
    constraints.fill = GridBagConstraints.BOTH;

    popup.add(app, constraints);

    BufferedImage Butico = ImageIO.read(new File("C:/Users/utkarsh/Desktop/close.png"));
    JButton close = new JButton(new ImageIcon(Butico));
    close.setContentAreaFilled(false);
    close.setBorder(BorderFactory.createEmptyBorder());
    c1.gridx = 1;
    c1.weightx = 0f;
    c1.weighty = 0f;
    c1.insets = new Insets(5, 5, 5, 5);
    c1.fill = GridBagConstraints.NONE;
    c1.anchor = GridBagConstraints.NORTH;
    close.addMouseListener(new MouseAdapter() {

        @Override
        public void mouseClicked(MouseEvent arg0) {
            popup.dispose();
        }
    });
    app.add(close, c1);

    JPanel cont = new JPanel(new GridBagLayout());
    // cont.setSize(arg0, arg1);
    String a = "hello";
    JLabel text = new JLabel("<HtML>" + t);
    text.setAlignmentX(Component.LEFT_ALIGNMENT);
    cont.setVisible(true);
    cont.setBackground(new Color(241, 242, 242));
    c1.gridx = 0;
    c1.gridy = 0;
    c1.weightx = 1.0f;
    c1.weighty = 1.0f;
    c1.insets = new Insets(5, 5, 5, 5);
    c1.anchor = GridBagConstraints.NORTH;
    c1.fill = GridBagConstraints.BOTH;
    cont.add(text, c1);
    constraints.gridx = 0;
    constraints.gridy += 1;
    constraints.weightx = 2.5f;
    constraints.weighty = 2.5f;
    constraints.fill = GridBagConstraints.BOTH;
    popup.add(cont, constraints);
    text.setFont(new Font("Comfortaa", Font.PLAIN, 12));
    text.setForeground(Color.DARK_GRAY);
    header.setForeground(Color.WHITE);
    popup.getRootPane().setBorder(BorderFactory.createMatteBorder(1, 1, 1, 1, new Color(188, 188, 188)));

    popup.setVisible(true);
    Dimension s = Toolkit.getDefaultToolkit().getScreenSize();
    Insets th = Toolkit.getDefaultToolkit().getScreenInsets(popup.getGraphicsConfiguration());
    popup.setLocation(s.width - popup.getWidth() - 5, s.height - th.bottom - popup.getHeight() - 5);
    popup.setAlwaysOnTop(true);
    new Thread() {

        @Override
        public void run() {
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } finally {
                popup.dispose();
            }

        }

    }.start();
}

现在当我点击按钮一旦它工作正常但是多按钮点击多个Jdialog弹出窗口出现并且只有最后一个在5s之后被处理

那么为了关闭每个JDialog框，我必须做出哪些改变

Answer 1

Popup不是此方法的本地

popup = new JFrame();

因为这段代码不是线程安全的。

每次单击时，您都将用新创建的popup对象替换popup.dispose();对象，因此import android.content.Context; import android.graphics.Matrix; import android.widget.ImageView; /** * ImageView to display top-crop scale of an image view. * * @author Chris Arriola */ public class TopCropImageView extends ImageView { public TopCropImageView(Context context) { super(context); setScaleType(ScaleType.MATRIX); } @Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { super.onLayout(changed, left, top, right, bottom); recomputeImgMatrix(); } @Override protected boolean setFrame(int l, int t, int r, int b) { recomputeImgMatrix(); return super.setFrame(l, t, r, b); } private void recomputeImgMatrix() { final Matrix matrix = getImageMatrix(); float scale; final int viewWidth = getWidth() - getPaddingLeft() - getPaddingRight(); final int viewHeight = getHeight() - getPaddingTop() - getPaddingBottom(); final int drawableWidth = getDrawable().getIntrinsicWidth(); final int drawableHeight = getDrawable().getIntrinsicHeight(); if (drawableWidth * viewHeight > drawableHeight * viewWidth) { scale = (float) viewHeight / (float) drawableHeight; } else { scale = (float) viewWidth / (float) drawableWidth; } matrix.setScale(scale, scale); setImageMatrix(matrix); } }将丢弃最后一个。

thread.sleep（5000）无效

1 个答案: