Java tutorial
//package com.java2s; /******************************************************************************* * * Messenger Android Frontend * (C) 2013-2016 Nikolai Kudashov * (C) 2017 Bjrn Petersen * Contact: r10s@b44t.com, http://b44t.com * * This program is free software: you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation, either version 3 of the License, or (at your option) any later * version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see http://www.gnu.org/licenses/ . * ******************************************************************************/ import android.webkit.MimeTypeMap; public class Main { public static String getMimetype(String fileName, String def) { String mimeType = "application/octet-stream"; try { MimeTypeMap mimeMap = MimeTypeMap.getSingleton(); int idx = fileName.lastIndexOf('.'); if (idx != -1) { String ext = fileName.substring(idx + 1); mimeType = mimeMap.getMimeTypeFromExtension(ext.toLowerCase()); } if (mimeType == null) { mimeType = def == null ? "application/octet-stream" : def; } } catch (Exception e) { } return mimeType; } }