uri,file,path互相转化

uri转file

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

uri转path:

视频uri

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);  }

图片uri

private File uri2File(Uri uri) {      File file = null;      String[] proj = { MediaStore.Images.Media.DATA };      Cursor actualimagecursor = getActivity().managedQuery(uri, proj, null,                  null, null);      int actual_image_column_index = actualimagecursor          .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);      actualimagecursor.moveToFirst();      String img_path = actualimagecursor           .getString(actual_image_column_index);      file = new File(img_path);      return file;  }

• ##### file转URI:

URI uri = file.toURI();

• ##### file转path:

String path = file.getPath()

• ##### path转uri:

Uri uri = Uri.parse(path);

• ##### path转file:

File file = new File(path)