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[英]How to add buttons to a JavaFX gui via the controller.java file using the fx:id of a GridPane
[英]How to add the rows dynamically on gridpane in Java FX?
我在下面的一行中有一个数据库登录表单,
// Hostname Input
Label hostName = new Label("Host:");
grid.add(hostName, 0, 2);
final TextField host = new TextField();
host.getText();
GridPane.setConstraints(host, 1, 2);
grid.getChildren().add(host);
// Port Input
Label portName = new Label("Port:");
grid.add(portName, 2, 2);
final TextField port = new TextField();
port.getText();
GridPane.setConstraints(port, 3, 2);
grid.getChildren().add(port);
// SID Input
Label sidName = new Label("SID:");
grid.add(sidName, 4, 2);
final TextField sid = new TextField();
sid.getText();
GridPane.setConstraints(sid, 5, 2);
grid.getChildren().add(sid);
// Username Input
Label userName = new Label("Username:");
grid.add(userName, 6, 2);
final TextField user = new TextField();
user.getText();
GridPane.setConstraints(user, 7, 2);
grid.getChildren().add(user);
// Password Input
Label pw = new Label("Password:");
grid.add(pw, 8, 2);
final TextField password = new PasswordField();
password.getText();
GridPane.setConstraints(password, 9, 2);
grid.getChildren().add(password);
在以下情况下,我需要添加更多行:
当txt输入文件有多行时。
例如)只有一行时,无需扩展;如果只有两行,则需要再添加一行。
当用户单击按钮添加行时。
是否可以在Java FX中完成? 请帮忙!!
感谢您的光临!
为什么在阅读文本文件时不只使用gridPane.addRow()
?
try(BufferedReader br = new BufferedReader(new FileReader("file.txt"))) {
StringBuilder sb = new StringBuilder();
String line = br.readLine();
int lineCounter = 0;
while (line != null) {
lineCounter++;
if(lineCounter > 1){
gridPane.addRow(lineCounter-1, nodeThatYouWant);
}
sb.append(line);
sb.append(System.lineSeparator());
line = br.readLine();
}
String everything = sb.toString();
}
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