File,URI,path互转

Android

URI

Uri=>file

file = new File(new URI(uri.toString()));

uri=>path

private String getPath(Uri uri) {  
       String[] projection = {MediaStore.Video.Media.DATA};  
       Cursor cursor = managedQuery(uri, projection, null, null, null);  
       int column_index = cursor  
               .getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);  
       cursor.moveToFirst();  
       return cursor.getString(column_index);  
   }  

File

file=>uri

URI uri = file.toURI();

file=>path

String path = file.getPath();

PATH

path=>uri

Uri uri = Uri.parse(path);

path=>file

File file = new File(path);