convert content Uri to file path

getFilePathUtil

public class getRealPathUtil {

	@ @TargetApi(Build.VERSION_CODES.KITKAT)
	public static String getRealPathFromURI_API19(Context context, Uri uri){
		String filePath = "";
		String wholeID = DocumentsContract.getDocumentId(uri);
	     String id = wholeID.split(":")[1];

	     String[] column = { MediaStore.Images.Media.DATA };     

	     // where id is equal to             
	     String sel = MediaStore.Images.Media._ID + "=?";

	     Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
	                               column, sel, new String[]{ id }, null);
	     int columnIndex = cursor.getColumnIndex(column[0]);
	     if (cursor.moveToFirst()) {
	         filePath = cursor.getString(columnIndex);
	     } 
	     cursor.close();
	     return filePath;
	}
	
	
	public static String getRealPathFromURI(Context context, Uri contentUri) {
		  Cursor cursor = null;
        try {
            String[] proj = { MediaStore.Images.Media.DATA };
            cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
            cursor.moveToFirst();
           int column_index = cursor.getColumnIndex(proj[0]);
            String path = cursor.getString(column_index);
            return path;
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
		  return result;  
	}
	
}

in Kotlin

class MediaUtils {
    companion object{
        fun getRealPathFromURI_API19(context: Context, uri: Uri?): String? {
            var filePath = ""
            val wholeID = DocumentsContract.getDocumentId(uri)
            val id = wholeID.split(":").toTypedArray()[1]
            val column = arrayOf(MediaStore.Images.Media.DATA)

            // where id is equal to
            val sel = MediaStore.Images.Media._ID + "=?"
            val cursor: Cursor? = context.contentResolver.query(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                column, sel, arrayOf(id), null
            )
            val columnIndex: Int = cursor!!.getColumnIndex(column[0])
            if (cursor.moveToFirst()) {
                filePath = cursor.getString(columnIndex)
            }
            cursor.close()
            return filePath
        }

        fun getRealPathFromURI(context: Context, contentUri: Uri?): String? {
            var cursor: Cursor? = null
            return try {
                val proj =
                    arrayOf(MediaStore.Images.Media.DATA)
                cursor = context.contentResolver.query(contentUri!!, proj, null, null, null)
                cursor!!.moveToFirst()
                val column_index = cursor.getColumnIndex(proj[0])

                cursor.getString(column_index)
            } finally {
                cursor?.close()
            }
        }

    }
}