如何重命名文件？

Question

一个简单的问题，我如何重命名一个文件？

File to = new File(f.getAbsolutePath(), etRenameStr.getText().toString()); 
f.renameTo(to); 
expl(); 

试过这样的，但似乎并没有工作。

谢谢！

Answer 1

我认为getAbsolutePath()返回包含文件名的完整路径，这可能是一个问题。改为尝试getParent()，看看它是否有效。

Answer 2

File rootDir = Environment.getExternalStorageDirectory();  
File file = new File(rootDir + "/Files/"+fileName); 

File file2 = new File("newname"); 

// Rename file (or directory) 
boolean success = file.renameTo(file2); 
if (!success) { 
System.out.println("File was not successfully renamed"); 
} 

这对我有效。请检查一次！

Answer 3

File dir = Environment.getExternalStorageDirectory(); 
if(dir.exist()){ 
    File from = new File(dir,"from.mp4"); 
    File to = new File(dir,"to.mp4"); 
    if(from.exist()) 
     from.renameTo(to); 
} 

http://developer.android.com/reference/java/io/File.html#renameTo%28java.io.File%29