Android uri ファイルパスを変換する

 public final static class Tools {
 public static String getFilePathByUri(Context context, Uri uri) {
 String path = null;
 // ファイル://  
 if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
 path = uri.getPath();
 return path;
 }
 // コンテンツ付き:// で始まる。://media/extenral/images/media/17766
 if (ContentResolver.SCHEME_CONTENT.equals(uri.getScheme()) && Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
 Cursor cursor = context.getContentResolver().query(uri, new String[]{MediaStore.Images.Media.DATA}, null, null, null);
 if (cursor != null) {
 if (cursor.moveToFirst()) {
 int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
 if (columnIndex > -1) {
 path = cursor.getString(columnIndex);
 }
 }
 cursor.close();
 }
 return path;
 }
 // 4.4それ以降はコンテンツという形になる:// で始まる。://com.android.providers.media.documents/document/image%3A235700
 if (ContentResolver.SCHEME_CONTENT.equals(uri.getScheme()) && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
 if (DocumentsContract.isDocumentUri(context, uri)) {
 if (isExternalStorageDocument(uri)) {
 // ExternalStorageProvider
 final String docId = DocumentsContract.getDocumentId(uri);
 final String[] split = docId.split(":");
 final String type = split[0];
 if ("primary".equalsIgnoreCase(type)) {
 path = Environment.getExternalStorageDirectory() + "/" + split[1];
 return path;
 }
 } else if (isDownloadsDocument(uri)) {
 // DownloadsProvider
 final String id = DocumentsContract.getDocumentId(uri);
 final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"),
 Long.valueOf(id));
 path = getDataColumn(context, contentUri, null, null);
 return path;
 } else if (isMediaDocument(uri)) {
 // MediaProvider
 final String docId = DocumentsContract.getDocumentId(uri);
 final String[] split = docId.split(":");
 final String type = split[0];
 Uri contentUri = null;
 if ("image".equals(type)) {
 contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
 } else if ("video".equals(type)) {
 contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
 } else if ("audio".equals(type)) {
 contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
 }
 final String selection = "_id=?";
 final String[] selectionArgs = new String[]{split[1]};
 path = getDataColumn(context, contentUri, selection, selectionArgs);
 return path;
 }
 }
 }
 return null;
 }
 private static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
 Cursor cursor = null;
 final String column = "_data";
 final String[] projection = {column};
 try {
 cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
 if (cursor != null && cursor.moveToFirst()) {
 final int column_index = cursor.getColumnIndexOrThrow(column);
 return cursor.getString(column_index);
 }
 } finally {
 if (cursor != null)
 cursor.close();
 }
 return null;
 }
 private static boolean isExternalStorageDocument(Uri uri) {
 return "com.android.externalstorage.documents".equals(uri.getAuthority());
 }
 private static boolean isDownloadsDocument(Uri uri) {
 return "com.android.providers.downloads.documents".equals(uri.getAuthority());
 }
 private static boolean isMediaDocument(Uri uri) {
 return "com.android.providers.media.documents".equals(uri.getAuthority());
 }
 }
 ```