I’m having a problem. I’m reading data from a socket, and when I read some meaningful data to my app I call a method to repaint the screen with the swing objects I want. This method works all right excepts that sometimes it does not appear. Nothing on the screen on the very first time the method is called (I already ran the debug and it passes all through the method). The stupid part is that, if I minimize and maximize the app it works fine again. Besides, if the method is executed again it works fine to. I’ll put the code here just for documentation:
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);
}
}
I already tried to repaint pan2 but it didn’t do anything.
thanks in advance
You’re posting a lot of code completely unrelated to the problem, and confusing code at that, but it sounds as if you may have a Swing concurrency issue. Be sure to do the reading in of data on a background thread and the writing to the Swing components on the Swing event thread or EDT. For better help though, post code relevant to the problem. An sscce would work best.
Also, if adding or removing components from a GUI, be sure to call
revalidate()on the container and thenrepaint().