英文:
How to avoid .getSelectedFile() premature selection?
问题
似乎 .getSelectedFile() 函数在选择取消选项后仍然会选择文件选择器中的文件夹。是否有不同的函数可用？比如 getOpenedFolder()，也许？我会感激任何帮助。以下是我的代码：
fc = new JFileChooser();
boolean flag = false;
fc.setCurrentDirectory(new java.io.File("C:/Users/michaelartichoke/Desktop"));
fc.setDialogTitle("PDF Manager");
fc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
fc.showOpenDialog(null);
chosenfolder = fc.getSelectedFile();
try {
folderpath = chosenfolder.getAbsolutePath();
flag = true;
} catch (Exception e) {
//
}
if (flag != false) {
selecting();
}
顺便说一下，selecting() 是创建数据库的命令。
英文:
It appears that the .getSelectedFile() functions will still choose a folder from a file chooser even after choosing the cancel option. Is there a different function? Like getOpenedFolder(), maybe? I would appreciate any help. Here is my code: <br/>
boolean flag = false;
fc.setCurrentDirectory(new java.io.File("C:/Users/michaelartichoke/Desktop"));
fc.setDialogTitle("PDF Manager");
fc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
fc.showOpenDialog(null);
chosenfolder = fc.getSelectedFile();
try{
folderpath = chosenfolder.getAbsolutePath();
flag = true;
} catch(Exception e){
//
}
if(flag!=false){
selecting();
}
FYI, selecting() is the command that creates the database.
答案1
得分: 1
你需要查看showOpenDialog()返回的结果，以确定用户是否选择了“打开”：
int res = fc.showOpenDialog(null);
if (res == JFileChooser.APPROVE_OPTION) {
// 用户选择了“打开”
chosenfolder = fc.getSelectedFile();
// ...
}
英文:
You need to look at the result that showOpenDialog() returned to see if the user chose "Open":
int res = fc.showOpenDialog(null);
if (res==JFileChooser.APPROVE_OPTION) {
// User picked 'Open"
chosenfolder = fc.getSelectedFile();
// ...
}
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