当OneTouchExpandable设置为true时，如何以编程方式设置JSplitPane以隐藏右/底组件？ [英] how can you programmatically set the JSplitPane to hide the right/bottom component when OneTouchExpandable is set to true?

问题描述

在 JSplitPane 中，你有 setOneTouchExpandable 方法，该方法为你提供2个按钮，可以快速完全隐藏或完整显示 JSplitPane 。

In a JSplitPane, you have the setOneTouchExpandable method which provides you with 2 buttons to quickly fully hide or full show the JSplitPane.

我的问题是你怎么能以编程方式点击隐藏按钮上的 JSplitPane ？

My question is how can you programmatically "click" the hide button on the JSplitPane?

我可能错误地解释了自己。我希望splitpane在开始时只显示2个组件中的一个（这就是我点击的意思）。

I may have wrongly explained myself. I want the splitpane to show only one of the 2 components at start (this is what i mean by clicking).

此作品：

import javax.swing.*;

class SplitPaneDefault {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JSplitPane sp = new JSplitPane(
                    JSplitPane.HORIZONTAL_SPLIT,
                    new JTree(),
                    new JTree());
                sp.setOneTouchExpandable(true);
                sp.setDividerLocation(0.0);
                JOptionPane.showMessageDialog(null, sp);
            }
        });
    }
}

但替换 0.0 1.0 不会隐藏正确的组件。这是我的问题！

but replacing 0.0 with 1.0 doesn't hide the right component. This is my problem!

推荐答案

import javax.swing.*;

class SplitPaneDefault {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JSplitPane sp = new JSplitPane(
                    JSplitPane.HORIZONTAL_SPLIT,
                    new JTree(),
                    new JTree());
                sp.setOneTouchExpandable(true);
                sp.setDividerLocation(0.0);
                JOptionPane.showMessageDialog(null, sp);
            }
        });
    }
}

---

---

用1.0替换0.0并且你得到我的问题

replace 0.0 with 1.0 and you get my problem

阅读精细手册并解决问题。

Read the fine manual and solve the problem.

此方法会立即根据当前大小更改拆分窗格的大小。 如果拆分窗格未正确实现 并且在屏幕上，此方法将 无效 ...

This method immediately changes the size of the split pane based on its current size. If the split pane is not correctly realized and on screen, this method will have no effect ...

import javax.swing.*;

class SplitPaneDefault {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JSplitPane sp = new JSplitPane(
                    JSplitPane.HORIZONTAL_SPLIT,
                    new JTree(),
                    new JTree());
                sp.setOneTouchExpandable(true);
                JFrame f = new JFrame("Split Pane To Right");
                f.add(sp);
                f.pack();
                // sp now has a non-zero size!
                sp.setDividerLocation(1.0);
                f.setLocationByPlatform(true);
                f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
                f.setVisible(true);
            }
        });
    }
}

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