java gridlayout 如何实现30行2列如图示的排列？

Posted 2023-05-17

如图，我的要求其实很简单： 采用java gridlayout 30行2列，左边列是JLabel，右边是编辑框 JTextfield。我要求左边的JLabel 为输入框名称，宽度小一些，其显示的文本靠近输入框，右边的JTExtfield 宽度大一些，而实际程序总是给我显示左右两边一样宽，对半的，Jlabel显示的文本离输入框很遥远，看起来很不舒服，为何这么简单的要求，能不能实现呢？如何实现？多谢了！

参考技术A GridLayout是这样的，都是平均分配的。根据楼主的需求，我提供两种思路：
其一：使用JSplitPane分割，以下代码：
private void init
//左侧布局
JPanel left = new JPanel() ;
left.setLayout(new GridLayout(30,1,1,1));
for(int i=0;i<30;i++)
//添加JLabel

//右侧布局
JPanel right = new JPanel() ;
right.setLayout(new GridLayout(30,1,1,1));
for(int i=0;i<30;i++)
//添加JTextField

//整体布局
JSplitPane jsp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,left,right);//使用JSplitPane
jsp.setDividerLocation(100);
this.add(jsp) ;

this.setLocation(100, 100);
this.setSize(400, 800);
this.setVisible(true);

注意：jsp.setDividerLocation(100);方法是设置分隔栏的位置；其中数字要配合this.setSize(400, 800);使用，长400，分隔栏100，也就是大约左侧占四分之一，右侧占四分之三。这种方法比较灵活。

其二：使用BorderLayout布局器，代码就不写了，太麻烦
就是把左边的JLabel布局好以后放在WEST中，右侧的JTextField布局好后放在CENTER中。 参考技术B 貌似这个组件没办法设置不同宽带的列！你可以用 JTable这个组件！

以编程方式将视图添加到 Xamarin.Android C# 中的 GridLayout

【中文标题】以编程方式将视图添加到 Xamarin.Android C# 中的 GridLayout

【英文标题】：Programmatically add view to a GridLayout in Xamarin.Android C#

【发布时间】：2021-12-02 06:06:16

【问题描述】：

如何在 Xamarin.Android 中使用 C# 以编程方式创建视图并将其添加到 GridLayout，同时指定列/行跨度？

【参考方案1】：

您可以在指定列和行跨度时执行此操作，但是在 C# 中执行此操作的过程与 Java 不同。创建 GridLayout：

//Create the Grid Layout with 2 rows and 2 columns.
GridLayout sampleGridLayout = new GridLayout(mainActivity);
sampleGridLayout.RowCount = 2;
sampleGridLayout.ColumnCount = 2;

//Assuming you're adding the GridLayout to a LinearLayout. 
//Replace the layout parameters as needed.
var gridLayoutParameters = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MatchParent, LinearLayout.LayoutParams.WrapContent);
sampleGridLayout.LayoutParameters = gridLayoutParameters;

//Create a Text View.
TextView sampleTextView1 = new TextView(mainActivity);
sampleTextView1.Text = "Sample Text 1";
//The GridLayout.LayoutParams constructor being used is this:
//GridLayout.LayoutParams(GridLayout.Spec? rowSpec, GridLayout.Spec? columnSpec)
//When invoking "Spec", the first integer is the 0 based column/row index(what row/column the view is in), the 2nd integer is the column/row span.
//So this is putting it in the first row, first column, only spanning a single cell.
var sampleTextView1Parameters = new GridLayout.LayoutParams(GridLayout.InvokeSpec(0, 1), GridLayout.InvokeSpec(0, 1));
sampleTextView1.LayoutParameters = sampleTextView1Parameters;

//Create a second Text View.
TextView sampleTextView2 = new TextView(mainActivity);
sampleTextView2.Text = "Sample Text 2";
//This is putting it in the first row, second column, only spanning a single cell.
var sampleTextView2Parameters = new GridLayout.LayoutParams(GridLayout.InvokeSpec(0, 1), GridLayout.InvokeSpec(1, 1));
sampleTextView2.LayoutParameters = sampleTextView2Parameters;

//Create a third Text View.
TextView sampleTextView3 = new TextView(mainActivity);
sampleTextView3.Text = "Sample Text 3";
//This is putting it in the second row, first column, but it spans both columns.
var sampleTextView3Parameters = new GridLayout.LayoutParams(GridLayout.InvokeSpec(1, 1), GridLayout.InvokeSpec(0, 2));
sampleTextView3.LayoutParameters = sampleTextView3Parameters;

sampleGridLayout.AddView(sampleTextView1);
sampleGridLayout.AddView(sampleTextView2);
sampleGridLayout.AddView(sampleTextView3);

这将创建一个 GridLayout，其中第一行有两个并排的 TextView，而第二行是跨越两列的单个 TextView。