Groovy SwingBuilder：用于更改面板颜色的按钮
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为什么此代码失败？
我想更改一系列动态构建的面板中的一个面板的颜色（事先未知的面板总数）。
出于某种原因，该代码在引用特定面板的名称（例如\'panel2 \'）时有效，但在我动态引用它（\'panelID \'）时则无效。
import groovy.swing.SwingBuilder
import javax.swing.WindowConstants as WC
import javax.swing.JOptionPane
import javax.swing.BoxLayout as BXL
swing = new SwingBuilder()
frame = swing.frame(title:\'test\',
defaultCloseOperation:WC.DISPOSE_ON_CLOSE) {
panel(id:\'mainPanel\'){
def panelID
(1..6).each {
panelID = \'panel\' + it
panel(alignmentX: 0f, id: panelID , opaque:true ,background : java.awt.Color.GREEN){
label(\'description\')
textField(id: \"description$it\", text: panelID, columns: 70 )
button(id: \"button$panelID\", text: panelID, actionPerformed : {
panelID.background = java.awt.Color.RED
panelID.repaint()
})
}
}
boxLayout(axis: BXL.Y_AXIS)
panel(id:\'secondPanel\' , alignmentX: 0f){
button(\'Quit\', actionPerformed:{
dispose()
})
}
}
}
frame.pack()
frame.show()
没有找到相关结果
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皇小福另届
import groovy.swing.SwingBuilder import javax.swing.WindowConstants as WC import javax.swing.JOptionPane import javax.swing.BoxLayout as BXL swing = new SwingBuilder() frame = swing.frame(title:\'test\', pack:true, visible:true, defaultCloseOperation:WC.DISPOSE_ON_CLOSE) { panel(id:\'mainPanel\'){ (1..6).each { num -> def panelID = \"panel$num\" def pane = panel( alignmentX:0f, id:panelID, background:java.awt.Color.GREEN ) { label(\'description\') textField(id: \"description$num\", text:panelID, columns: 70 ) button(id: \"buttonpanel$num\", text:panelID, actionPerformed : { swing.\"$panelID\".background = java.awt.Color.RED }) } } boxLayout(axis: BXL.Y_AXIS) panel(id:\'secondPanel\' , alignmentX: 0f){ button(\'Quit\', actionPerformed:{ frame.visible = false }) } } }