我正在创建Excel 文件以将其存储在内部存储中，但我无法做到。它仅在应用程序存储目录中创建。在公共场合不可见。如何创建文件夹并将文件存储在该文件夹中？有人知道吗帮我解决这个问题。
文件创建编码
public String generate(String file_name,String path) {
try {
f = new File(activity.getFilesDir(), path);
if (!f.exists()) {
f.mkdirs();
}
file = new File(f.getAbsolutePath(), file_name);
if (file.createNewFile()) {
file.createNewFile();
}
wb_setting = new WorkbookSettings();
wb_setting.setLocale(new Locale("en", "EN"));
workbook = Workbook.createWorkbook(file, wb_setting);
workbook.createSheet("Report", 0);
excelSheet = workbook.getSheet(0);
createLabel(excelSheet);
createContent(excelSheet);
workbook.write();
workbook.close();
file_path_alert_builder = new AlertDialog.Builder(activity);
file_path_alert_builder.setTitle("File path");
file_path_alert_builder.setMessage(""+file).setCancelable(true).setPositiveButton("OK",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
}
});
file_path_dialog = file_path_alert_builder.create();
file_path_dialog.show();
}catch (JXLException jxl_e) {
jxl_e.printStackTrace();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}