Is this an image file - Android Graphics

Android examples for Graphics:Image File

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Description

Is this an image file

Demo Code

/* // w ww  .ja  va 2  s . c  o  m
 * Copyright (C) 2007-2008 OpenIntents.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package com.book2s;

public class Main {
    public static final String JPG = ".jpg";
    public static final String GIF = ".gif";
    public static final String PNG = ".png";
    public static final String BMP = ".bmp";

    /**
     * Is this an image file
     * @param path
     * @return true if file is an image file
     */
    public static boolean isImageFile(String path) {
        String extension = getExtension(path);
        if (extension != null) {
            if (JPG.equalsIgnoreCase(extension)
                    || GIF.equalsIgnoreCase(extension)
                    || PNG.equalsIgnoreCase(extension)
                    || BMP.equalsIgnoreCase(extension)) {
                return true;
            }
        }
        return false;
    }

    /**
     * Gets the extension of a file name, like ".png" or ".jpg".
     * 
     * @param uri
     * @return Extension including the dot("."); "" if there is no extension;
     *         null if uri was null.
     */
    public static String getExtension(String uri) {
        if (uri == null) {
            return null;
        }

        int dot = uri.lastIndexOf(".");
        if (dot >= 0) {
            return uri.substring(dot);
        } else {
            // No extension.
            return "";
        }
    }
}

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