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我遇到问题。我正在从套接字读取数据，并且当我向应用程序读取一些有意义的数据时，我调用一个方法来重新绘制我想要的swing对象的屏幕。这种方法除了有时不会出现的情况外都可以正常工作。在第一次调用该方法时屏幕上没有任何东西（我已经运行了调试，并通过了该方法）。愚蠢的部分是，如果我最小化和最大化应用程序，它再次正常工作。此外，如果方法再次执行，它可以正常工作。我将代码放在这里只是为了文档：摆动方法错误
public void GraphicONENodeJoined (Nodes NodesList)
{
SensorsMapGraf [] sensorsMap;
boolean FLAG;
int ymin=0, ymax=30;
FLAG = TabExistingNode_NEW_nodeRefresh (NodesList);
if (FLAG)
{
ValorTeste++;
if (ValorTeste > 1)
{
String [] s = new String[ValorTeste];
JButton [] jbb = new JButton[ValorTeste];
JCheckBox [] ch = new JCheckBox[ValorTeste];
for (int i=0 ; i < ValorTeste-1 ; i++)
{
s[i] = nods[i];
jbb[i] = jb[i];
ch[i] = CheckBoxNodes[i];
}
jb = new JButton[ValorTeste];
CheckBoxNodes = new JCheckBox[ValorTeste];
nods = new String[ValorTeste];
for (int i=0 ; i < ValorTeste ; i++)
{
nods[i] = s[i];
jb[i] = jbb[i];
CheckBoxNodes[i] = ch[i];
}
}
nods[ValorTeste-1]+= NodesList.GETSourceNodeID();
//PARA FAZER O UPDATE DAS TABS E DOS GRÁFICOS
JPanel meio = new JPanel(); //JPanel que contem os graficos de cada sensor
String s = new String();
s += NodesList.GETSourceNodeID();
JPanel meio_cima = new JPanel(); //JPanel que contem o botão view (permitirá escolher quais os sensores a ver)
meio_cima.setAlignmentX(LEFT_ALIGNMENT);
meio_cima.setPreferredSize(new Dimension(dim.width, 25));
meio.setBounds (pan1.getBounds());
GridBagLayout g = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
meio.setLayout(g);
meio.setOpaque(true);
//botão view (permitirá escolher quais os sensores a ver)
jb[nods.length-1] = new JButton("View");
jb[nods.length-1].setPreferredSize(new Dimension(100,20));
jb[ValorTeste -1].addActionListener(this);
meio_cima.add(jb[ValorTeste-1]);
//Panel qu albergará o panel meio e o panel meio_cima
JPanel principal = new JPanel();
//inicia o array de sensores que cada Tab tem de mostrar
sensorsMap = new SensorsMapGraf[NodesList.GETnumSensoresActivos()];
int indice = 0;
for (int j=0 ; j < 12 ; j++)
{
//nicely to view in the graphics
if ((j == 0) || (j == 1) || (j == 2) || (j == 3) || (j == 6) || (j == 7))
{
ymin = 0;
ymax = 3;
}
if (j == 8)
{
ymin = 0;
ymax = 100;
}
if (j == 9)
{
ymin = 0;
ymax = 100;
}
if (j == 10)
{
ymin = 0;
ymax = 4;
}
if (j == 11)
{
ymin = 0;
ymax = 130;
}
if (j == 4)
{
ymin = 0;
ymax = 6000;
}
if (j == 5)
{
ymin = 0;
ymax =700;
}
if (NodesList.GETSensores(j).GETligado()) // se estiver ligado
{
//panel que albergará o grafico
JPanel p = new JPanel();
p.setBounds(meio.getBounds());
if (NodesList.GETnumSensoresActivos() <= 4)
{
if (NodesList.GETnumSensoresActivos() <= 4 && NodesList.GETnumSensoresActivos() > 1)
sensorsMap[indice] = new SensorsMapGraf(true,NodesList.GETSensores(j).GETnome(),NodesList.GETSensores(j).GETunidade(),meio.getBounds(),(int)meio.getWidth()/2-20,(int)meio.getHeight()/2-20,ymin,ymax); // cria o sensor
else
sensorsMap[indice] = new SensorsMapGraf(true,NodesList.GETSensores(j).GETnome(),NodesList.GETSensores(j).GETunidade(),meio.getBounds(),(int)meio.getWidth()/NodesList.GETnumSensoresActivos(),(int)meio.getHeight()/NodesList.GETnumSensoresActivos()-35,ymin,ymax); // cria o sensor
}
if (NodesList.GETnumSensoresActivos() > 4 && NodesList.GETnumSensoresActivos() <= 8)
sensorsMap[indice] = new SensorsMapGraf(true,NodesList.GETSensores(j).GETnome(),NodesList.GETSensores(j).GETunidade(),p.getBounds(),(int)meio.getWidth()/4-15,(int)meio.getHeight()/2 - 45,ymin,ymax); // cria o sensor
if (NodesList.GETnumSensoresActivos() > 8 && NodesList.GETnumSensoresActivos() <= 12)
sensorsMap[indice] = new SensorsMapGraf(true,NodesList.GETSensores(j).GETnome(),NodesList.GETSensores(j).GETunidade(),p.getBounds(),(int)meio.getWidth()/4-20,(int)meio.getHeight()/3-35,ymin,ymax); // cria o sensor
if (indice == 0)
{
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 0;
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 1)
{
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 1;
c.gridy = 0;
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 2)
{
c.fill = GridBagConstraints.HORIZONTAL;
if (NodesList.GETnumSensoresActivos() <= 4)
{
c.gridx = 0;
c.gridy = 1;
}
else
{
c.gridx = 2;
c.gridy = 0;
}
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 3)
{
c.fill = GridBagConstraints.HORIZONTAL;
if (NodesList.GETnumSensoresActivos() > 4)
{
c.gridx = 3;
c.gridy = 0;
}
else
{
c.gridx = 1;
c.gridy = 1;
}
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 4)
{
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 1;
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 5)
{
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 1;
c.gridy = 1;
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 6)
{
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 2;
c.gridy = 1;
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 7)
{
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 3;
c.gridy = 1;
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 8)
{
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 2;
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 9)
{
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 1;
c.gridy = 2;
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 10)
{
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 2;
c.gridy = 2;
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
if (indice == 11)
{
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 3;
c.gridy = 2;
meio.add(sensorsMap[indice].GetGraph().GETDemoPanel(),c); //adidionar o panel p ao panel meio
}
indice++;
}
}
//adicionar o meio_cima e o meio panel principal
principal.add(meio_cima);
principal.add(meio);
Tabs.addTab(s, principal); // adicionar tab
String ss = new String();
ss += NodesList.GETSourceNodeID();
GraphicsMap.add(new CentralMap(ValorTeste-1, ValorTeste-1, sensorsMap,ss,NodesList.GETLogicalNodeID())); // adição de uma Tab
GraphicsMap.get(ValorTeste-1).SetnumSensorsToShow(NodesList.GETnumSensoresActivos());
posx = 20;
posy = 20;
CheckBoxNodes[ValorTeste-1] = new JCheckBox(s);
CheckBoxNodes[ValorTeste-1].setBackground(null);
CheckBoxNodes[ValorTeste-1].setLayout(new GridLayout(ValorTeste, 1, 0, 30));
CheckBoxNodes[ValorTeste-1].setBounds(posx, posy, aux1-60, 30);
CheckBoxNodes[ValorTeste-1].setSelected(false);
CheckBoxNodes[ValorTeste-1].setOpaque(true);
CheckBoxNodes[ValorTeste-1].setVisible(true);
//Evento a tratar
CheckBoxNodes[ValorTeste-1].addItemListener (this);
pan3.add (CheckBoxNodes[ValorTeste-1]);
pan1.add (Tabs);
}
}
我已经尝试重画pan2但它没有做任何事情。
在此先感谢
考虑发布[SSCCE]（SSCCE.org）。 – 2012-07-11 15:47:35