[文件方法的renameTo（）返回true，但是如果我更改文件名的小写/大写形式，则实际上并未重命名文件

Question

例如：

String oldName = "SubFolder1";
String newName = "subfolder1";

File oldFolder = new File(getExternalFilesDir("some_folder").toString() + File.separator + oldName);
File newFolder = new File(getExternalFilesDir("some_folder").toString() + File.separator + newName);

boolean isSuccesfullyRenamed = oldFolder.renameTo(newFolder);
Log.v("rename success", isSuccessfullyRenamed);

很抱歉，如果代码未编译，但通常会为成功重命名返回TRUE，但是文件夹实际上并未从“ SubFolder1”重命名为“ subfolder1”。

为什么它返回成功？以及如何实际更改Android上已经存在的文件夹/文件的字母大小写？

我唯一能想到的解决方案是创建一个临时父文件夹，将文件/子文件夹移至该临时文件夹，然后将其移回旧的父文件夹。

Answer 1

linux system equalIgnoreCase file or folder name so both 
name are same so that return true and try this below code:
private void renameFile()
{
    String oldName = "SubFolder1";
    String newName = "subfolder2";
    String root= 
    Environment.getExternalStorageDirectory().toString()+
    "/"+"some_folder";
    File oldFolder = new File(root,File.separator+oldName);
    File newFolder = new File(root,File.separator+newName);
    boolean isSuccesfullyRenamed = 
    oldFolder.renameTo(newFolder);
    Log.d("renamesuccess", isSuccesfullyRenamed+"");
}