我正在使用Swing在Java中编写一个简单的计算器，我遇到了GridBagLayout的问题 .
这是我如何切割我的组件：
你可以看到，cos sin tan％log sqrt sqr和pi按钮不应该远离其他按钮 .
此外，当我在程序启动时缩小窗口大小时会发生这种情况：
按钮以我希望它们显示的方式显示，但JTable显示奇怪 .
这是关于主窗口的一些信息：
首选尺寸：600 * 600 Jtable：未设置尺寸信息
并且每个组件在GridBagConstraints对象中都将其权重属性设置为0（我认为它可能来自此
编辑：一些代码！这是我用来初始化按钮的枚举，所以你可以看到GridBagConstraints .
//new GridBagConstraints(int gridx, int gridy, int gridwidth, int gridheight, double weightx, double weighty,
//int anchor, int fill, Insets insets, int ipadx, int ipady);
ZERO("0", 96, new GridBagConstraints(5,5,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
ONE("1", 97, new GridBagConstraints(4,4,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
TWO("2", 98, new GridBagConstraints(5,4,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
THREE("3", 99, new GridBagConstraints(6,4,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
FOUR("4", 100, new GridBagConstraints(4,3,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
FIVE("5", 101, new GridBagConstraints(5,3,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
SIX("6", 102, new GridBagConstraints(6,3,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
SEVEN("7", 103, new GridBagConstraints(4,2,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
EIGHT("8", 104, new GridBagConstraints(5,2,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
NINE("9", 105, new GridBagConstraints(6,2,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
DOT(".", 110, new GridBagConstraints(6,5,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
PLUS("+", 107, new GridBagConstraints(7,2,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
MINUS("-", 109, new GridBagConstraints(7,3,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
DIVIDE("/", 111, new GridBagConstraints(7,5,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
MULTIPLY("*", 106, new GridBagConstraints(7,4,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
MODULO("%", 0, new GridBagConstraints(7,6,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
EQUAL("=", 10, new GridBagConstraints(4,5,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
CLEAR("C", 67, new GridBagConstraints(7,1,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
BACKSPACE("Bck", 8, new GridBagConstraints(7,0,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
CLEARHISTORY("Clear history", 72, new GridBagConstraints(0,7,4,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
COSINUS("cos", 72, new GridBagConstraints(4,6,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
SINUS("sin", 72, new GridBagConstraints(5,6,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
TANGENT("tan", 72, new GridBagConstraints(6,6,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
SQUAREROOT("sqrt", 72, new GridBagConstraints(5,7,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
SQUARE("sqr", 72, new GridBagConstraints(6,7,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
LOGARITHM("log", 72, new GridBagConstraints(4,7,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)), //
PLUSMINUS("±", 72, new GridBagConstraints(7,7,1,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0));
这是我初始化视图的代码：
CALCULATIONSHISTORYLABEL(new GridBagConstraints(0,0,4,1,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)),
CALCULATIONSHISTORYTABLE(new GridBagConstraints(0,1,4,6,0,0,GridBagConstraints.CENTER,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)),
CURRENTCALCULATIONLABEL(new GridBagConstraints(4,0,3,1,0,0,GridBagConstraints.LINE_END,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0)),
CURRENTRESULTLABEL(new GridBagConstraints(4,1,3,1,0,0,GridBagConstraints.LINE_END,
GridBagConstraints.NONE,new Insets(5,5,5,5),0,0));
/*...*/
public View() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setTitle("simpleCount");
setPreferredSize(new Dimension(800, 800));
setLayout(new GridBagLayout());
calculationsHistoryView = new JTable();
GridBagConstraints c = new GridBagConstraints();
add(new JLabel("Calculations History"), ComponentPlacement.CALCULATIONSHISTORYLABEL.gbc);
add(new JScrollPane(calculationsHistoryView), ComponentPlacement.CALCULATIONSHISTORYTABLE.gbc);
add(currentCalculationView, ComponentPlacement.CURRENTCALCULATIONLABEL.gbc);
add(currentResultView, ComponentPlacement.CURRENTRESULTLABEL.gbc);
for (int i = 0; i < Button.values().length; i++) {
add(buttonsView.getButtons()[i], Button.values()[i].gbc);
}
pack();
setVisible(true);
requestFocus();
}
谁能帮助我？
提前感谢您的回答 .
2 回答
不要对整个框架使用单个布局管理器 .
默认的布局管理器是框架的BorderLayout，我会坚持这一点 .
然后，您可以使用GridBagLayout创建“按钮面板”，并使用以下命令添加面板：
然后你可以创建另一个“左面板”，它可能再次使用BorderLayout . 那你可以
将顶部标签添加到BorderLayout.PAGE_START
将表添加到BorderLayout.CENTER
将底部标签添加到BorderLayout.PAGE_END
最后将左侧面板添加到框架中：
现在框架中的所有额外空间都将转到表格中 .
我认为可能有两个问题：
尝试将表格滚动的拉伸宽度和高度设置为0.1到1.0（大于零），并将拉伸策略设置为
GridBagLayout.BOTH设置
minPrefferedHeight()和minPrefferedWidth()ofJScrollPane这是表容器 .