Question

我在Java中有两个需要具有相同布局的面板，我的初始化面板功能。

private void InitializePanelCom(){
        pnlCom=new JPanel();
        pnlCom.setSize(300,160);
        pnlCom.setLocation(10, 60);
        add(pnlCom);
        GridBagLayout gb=new GridBagLayout();
        GridBagConstraints gc=new GridBagConstraints();
        pnlCom.setLayout(gb);

        jLabelcommPort = setJLabel("Com Port : ");
        jLabelbaudRate = setJLabel("Baud Rate : ");
        jLabelplcAddress = setJLabel("Plc Address : ");
        jLabelsendTime = setJLabel("Send Time : ");
        jLabelx50 = setJLabel(" x 50 ms (2 - 99)");
        jComboBoxcommPort = setJComboBox(commPortList);
        jComboBoxbaudRate = setJComboBox(bitRateList);
        jTextAreaPlcAddress = setJTextField("");
        jTextAreaSendTime = setJTextField("");

        gc.insets = new Insets(10,0,0,0);
        gc.ipadx = 120; 
        gc.weightx = 1;
        gc.gridx = 0;
        gc.gridy = 0;
        gc.anchor=GridBagConstraints.EAST;
        pnlCom.add(jLabelcommPort,gc);

        gc.insets = new Insets(10,0,0,0);
        gc.ipadx = 120; 
        gc.weightx = 1;
        gc.gridx = 1;
        gc.gridy = 0;
        gc.anchor=GridBagConstraints.EAST;
        pnlCom.add(jComboBoxcommPort,gc);

        gc.insets=new Insets(10,0,0,0);
        gc.ipadx=120;
        gc.weightx=1;
        gc.gridx=0;
        gc.gridy=1;
        gc.anchor=GridBagConstraints.EAST;
        pnlCom.add(jLabelbaudRate,gc);


        gc.insets=new Insets(10,0,0,0);
        gc.ipadx=120;
        gc.weightx=1;
        gc.gridx=1;
        gc.gridy=1;
        gc.anchor=GridBagConstraints.EAST;
        pnlCom.add(jComboBoxbaudRate,gc);   

        gc.insets=new Insets(10,0,0,0);
        gc.ipadx=120;
        gc.weightx=1;
        gc.gridx=0;
        gc.gridy=2;
        gc.anchor=GridBagConstraints.EAST;
        pnlCom.add(jLabelplcAddress,gc);


        gc.insets=new Insets(10,0,0,0);
        gc.ipadx=120;
        gc.weightx=1;
        gc.gridx=1;
        gc.gridy=2;
        gc.anchor=GridBagConstraints.EAST;
        pnlCom.add(jTextAreaPlcAddress,gc); 

        gc.insets=new Insets(10,0,0,0);
        gc.ipadx=120;
        gc.weightx=1;
        gc.gridx=0;
        gc.gridy=3;
        gc.anchor=GridBagConstraints.EAST;
        pnlCom.add(jLabelsendTime,gc);


        gc.insets=new Insets(10,0,0,0);
        gc.ipadx=120;
        gc.weightx=1;
        gc.gridx=1;
        gc.gridy=3;
        gc.anchor=GridBagConstraints.EAST;
        pnlCom.add(jTextAreaSendTime,gc);

        gc.insets=new Insets(10,0,0,0);
        gc.ipadx=120;
        gc.weightx=1;
        gc.gridx=2;
        gc.gridy=3;
        gc.anchor=GridBagConstraints.EAST;
        pnlCom.add(jLabelx50,gc);
    }
    ![alt text][1]


private void InitializePanelTcp(){

        pnlTcp=new JPanel();
        pnlTcp.setSize(300,160);
        pnlTcp.setLocation(10, 60);
        add(pnlTcp);
        GridBagLayout gb=new GridBagLayout();
        GridBagConstraints gc=new GridBagConstraints();
        pnlTcp.setLayout(gb);


        lblIPAddress=setJLabel("IP Address : ");
        txtIPAddress=setJTextField("");
        lblPort=setJLabel("Port : ");
        txtPort=setJTextField("");

        cmbBaudRateTCP = setJComboBox(bitRateList);
        lblBaudRateTCP = setJLabel("Baud Rate : ");
        lblParityCheck=setJLabel("Parity check : ");
        txtParityCheck=setJTextField("");



        gc.insets = new Insets(10,0,0,0);
        //gc.ipadx = 20; 
        gc.weightx = 0.3;
        gc.gridx = 0;
        gc.gridy = 0;
        gc.anchor=GridBagConstraints.WEST;
        pnlTcp.add(lblIPAddress,gc);

        gc.insets = new Insets(10,0,0,0);
        //gc.ipadx = 80; 
        gc.weightx = 0.7;
        gc.gridx = 1;
        gc.gridy = 0;
        gc.anchor=GridBagConstraints.WEST;
        pnlTcp.add(txtIPAddress,gc);

        gc.insets=new Insets(10,0,0,0);
        //gc.ipadx=120;
        gc.weightx=0.3;
        gc.gridx=0;
        gc.gridy=1;
        gc.anchor=GridBagConstraints.WEST;
        pnlTcp.add(lblPort,gc);


        gc.insets=new Insets(10,0,0,0);
        //gc.ipadx=80;
        gc.weightx=0.7;
        gc.gridx=1;
        gc.gridy=1;
        gc.anchor=GridBagConstraints.WEST;
        pnlTcp.add(txtPort,gc); 

        gc.insets=new Insets(10,0,0,0);
        //gc.ipadx=120;
        gc.weightx=0.3;
        gc.gridx=0;
        gc.gridy=2;
        gc.anchor=GridBagConstraints.WEST;
        pnlTcp.add(lblBaudRateTCP,gc);


        gc.insets=new Insets(10,0,0,0);
        //gc.ipadx=0;
        gc.weightx=0.7;
        gc.gridx=1;
        gc.gridy=2;
        gc.anchor=GridBagConstraints.WEST;
        pnlTcp.add(cmbBaudRateTCP,gc);  

        gc.insets=new Insets(10,0,0,0);
        //gc.ipadx=120;
        gc.weightx=0.3;
        gc.gridx=0;
        gc.gridy=3;
        gc.anchor=GridBagConstraints.WEST;
        pnlTcp.add(lblParityCheck,gc);


        gc.insets=new Insets(10,0,0,0);
        //gc.ipadx=0;
        gc.weightx=1.7;
        gc.gridx=1;
        gc.gridy=3;
        gc.anchor=GridBagConstraints.WEST;
        pnlTcp.add(txtParityCheck,gc);





    }

alt text

alt text 问题是第一个面板（initializetcp，图片看起来不一样，标签在左边移动，文本框小而丑，不同）。任何人都可以帮忙，我是GridBagContsraints的新手吗？

Answer 1

通常当我使用weightx或weighty时，我也使用填充约束： gc.fill = GridBagConstraint.Horizontal;

例如，以下代码将使您的组件占用可用水平空间的50％。

gc.weightx = 0.5;
gc.fill = GridBagConstraint.Horizontal;

我实际上无法测试你的代码，但试一试，它应该解决你的问题。您还应该尝试在父构造函数的末尾调用 pack（）; （我猜想是JFrame）。

Answer 2

快速浏览一下，有问题的面板将所有的ipadx值声明作为注释。看起来不错的面板没有。删除//标记，看看是否有帮助：）

Answer 3

你有最深切的同情......

http://madbean.com/anim/totallygridbag/

GridBagConstraints问题 - 向左移动，大小不一样

3 个答案: