Android's Linearlayout For Swing

Is there a LayoutManager for Swing that acts as LinearLayout in Android? I like an idea of components weights very much.

Solution 1:

You can use the FlowLayout, GridLayout or BorderLayout. In my experience in building GUI in java, I mostly use combinations of BorderLayouts (most of the time) and GridLayouts.

Layout Basics

If you want it to look like

the code is:

publicvoidinitComponents() {

    jButton1 = new javax.swing.JButton();
    jButton2 = new javax.swing.JButton();
    jButton3 = new javax.swing.JButton();
    jButton4 = new javax.swing.JButton();

    setLayout(new java.awt.GridLayout(0, 1));

    jButton1.setText("jButton1");
    add(jButton1);

    jButton2.setText("jButton2");
    add(jButton2);

    jButton3.setText("jButton3");
    add(jButton3);

    jButton4.setText("jButton4");
    add(jButton4);
}

Solution 2:

If you need individual weights use GridBagLayout. Or you can try BoxLayout.

Solution 3:

You can use SwanLayout https://github.com/idayrus/swan-layout

This library bring LinearLayout and FrameLayout implementation to Java Swing

Example in kotlin:

val panelVertical = JPanel(LinearLayout(LinearLayout.VERTICAL))
val panelHorizontal = JPanel(LinearLayout(LinearLayout.HORIZONTAL))
val lc = LinearConstraints()

lc.reset()
lc.width = 0
lc.weight = 0.5
lc.margin = 10
lc.marginEnd = 5
panelHorizontal.add(JButton("Horizontal (weight 0.5)"), lc)

lc.reset()
lc.width = 0
lc.weight = 0.5
lc.margin = 10
lc.marginStart = 5
panelHorizontal.add(JButton("Horizontal (weight 0.5)"), lc)

// Add panelHorizontal to panelVertical
lc.reset()
lc.width = LinearConstraints.MATCH_PARENT
lc.height = LinearConstraints.WRAP_CONTENT
panelVertical.add(panelHorizontal, lc)

lc.reset()
lc.margin = 10
lc.marginTop = 0
lc.width = LinearConstraints.WRAP_CONTENT
lc.height = LinearConstraints.WRAP_CONTENT
lc.gravity = LinearConstraints.CENTER
panelVertical.add(JButton("Gravity Center"), lc)

lc.reset()
lc.margin = 10
lc.marginTop = 0
lc.width = LinearConstraints.MATCH_PARENT
lc.height = LinearConstraints.MATCH_PARENT
panelVertical.add(JButton("Fill Remain"), lc)

Result