java在循环中创建Swing组件并访问它们
我需要读取一个配置文件并将数据(它由键值对组成)放入一些文本字段中,这些文本字段必须在JFrame中动态创建。 之后,我想修改文本字段并再次保存对文件的更改
到目前为止,我所拥有的:
FileConfiguration fileConfig = new PropertiesConfiguration(new File("xesfile.properties"));
Iterator<String> keys = fileConfig.getKeys();
while (keys.hasNext()) {
String singleKey = keys.next();
//for the case that a key has multiple values
if (fileConfig.getProperty(singleKey).getClass().equals(ArrayList.class)) {
ArrayList<String> blaArray = (ArrayList<String>) fileConfig.getProperty(singleKey);
for (int i = 0; i < blaArray.size(); i++) {
this.keyLabel = new JLabel(this.nameKeyLabel + this.count);
this.entityLabel = new JLabel(this.nameEntityLabel + this.count);
this.keyTextField = new JTextField();
this.keyTextField.setName(this.nameKeyTextField + this.count);
this.keyTextField.setText(singleKey);
this.entityTextField = new JTextField();
this.entityTextField.setName(this.nameEntityTextField + this.count);
this.entityTextField.setText(blaArray.get(i));
this.count++;
this.configFrame.add(this.keyLabel);
this.configFrame.add(this.keyTextField);
this.configFrame.add(this.entityLabel);
this.configFrame.add(this.entityTextField);
this.configFrame.revalidate();
this.configFrame.repaint();
this.configFrame.pack();
}
//for the case a key has a single value
} else {
this.keyLabel = new JLabel(this.nameKeyLabel + this.count);
this.entityLabel = new JLabel(this.nameEntityLabel + this.count);
this.keyTextField = new JTextField();
this.keyTextField.setName(this.nameKeyTextField + this.count);
this.keyTextField.setText(singleKey);
this.entityTextField = new JTextField();
this.entityTextField.setName(this.nameEntityTextField + this.count);
this.entityTextField.setText((String) fileConfig.getProperty(singleKey));
this.count++;
this.configFrame.add(this.keyLabel);
this.configFrame.add(this.keyTextField);
this.configFrame.add(this.entityLabel);
this.configFrame.add(this.entityTextField);
this.configFrame.revalidate();
this.configFrame.repaint();
this.configFrame.pack();
}
}
正如您所见,文本字段在while循环的每个过程中都会一次又一次地创建。但是我需要访问我在第一次循环中创建的文本字段。
我想如果我用getName()
访问文本字段,它们会被返回,但事实并非如此。
有人能帮我吗
# 1 楼答案
这太简单了
# 2 楼答案
将TextField存储在地图中,键作为名称,值作为TextField对象本身。您可以稍后使用以下方式访问它: