99 lines
3.8 KiB
Java
99 lines
3.8 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.messaging.util;
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import android.net.Uri;
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import android.text.TextUtils;
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public class YouTubeUtil {
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private static final String YOUTUBE_HOST_1 = "www.youtube.com";
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private static final String YOUTUBE_HOST_2 = "youtube.com";
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private static final String YOUTUBE_HOST_3 = "m.youtube.com";
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private static final String YOUTUBE_HOST_4 = "youtube.googleapis.com";
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private static final String YOUTUBE_HOST_5 = "youtu.be";
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private static final String YOUTUBE_PATH_1 = "/watch";
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private static final String YOUTUBE_PATH_2 = "/embed/";
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private static final String YOUTUBE_PATH_3 = "/v/";
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private static final String YOUTUBE_PATH_4 = "/apiplayer";
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public static final String YOUTUBE_STATIC_THUMBNAIL_PREFIX = "https://img.youtube.com/vi/";
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public static final String YOUTUBE_STATIC_THUMBNAIL_END = "/hqdefault.jpg";
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public static String getYoutubePreviewImageLink(String urlString) {
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// Types of youtube urls:
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// 1.) http://www.youtube.com/watch?v=VIDEOID
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// 2.) http://www.youtube.com/embed/VIDEOID
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// 3.) http://www.youtube.com/v/VIDEOID
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// 3a.) https://youtube.googleapis.com/v/VIDEOID
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// 4.) http://www.youtube.com/apiplayer?video_id=VIDEO_ID
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// 5.) http://youtu.be/VIDEOID
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if (!urlString.startsWith("http")) {
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// Apparently the url is not an RFC 2396 compliant uri without the port
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urlString = "http://" + urlString;
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}
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final Uri uri = Uri.parse(urlString);
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final String host = uri.getHost();
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if (YOUTUBE_HOST_1.equalsIgnoreCase(host)
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|| YOUTUBE_HOST_2.equalsIgnoreCase(host)
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|| YOUTUBE_HOST_3.equalsIgnoreCase(host)
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|| YOUTUBE_HOST_4.equalsIgnoreCase(host)
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|| YOUTUBE_HOST_5.equalsIgnoreCase(host)) {
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final String videoId = getYouTubeVideoId(uri);
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if (!TextUtils.isEmpty(videoId)) {
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return YOUTUBE_STATIC_THUMBNAIL_PREFIX + videoId + YOUTUBE_STATIC_THUMBNAIL_END;
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}
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return null;
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}
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return null;
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}
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private static String getYouTubeVideoId(Uri uri) {
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final String urlPath = uri.getPath();
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if (TextUtils.isEmpty(urlPath)) {
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// There is no path so no need to continue.
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return null;
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}
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// Case 1
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if (urlPath.startsWith(YOUTUBE_PATH_1)) {
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return uri.getQueryParameter("v");
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}
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// Case 2
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if (urlPath.startsWith(YOUTUBE_PATH_2)) {
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return getVideoIdFromPath(YOUTUBE_PATH_2, urlPath);
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}
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// Case 3
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if (urlPath.startsWith(YOUTUBE_PATH_3)) {
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return getVideoIdFromPath(YOUTUBE_PATH_3, urlPath);
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}
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// Case 4
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if (urlPath.startsWith(YOUTUBE_PATH_4)) {
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return uri.getQueryParameter("video_id");
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}
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// Case 5
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if (YOUTUBE_HOST_5.equalsIgnoreCase(uri.getHost())) {
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return getVideoIdFromPath("/", urlPath);
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}
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return null;
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}
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private static String getVideoIdFromPath(String prefixSubstring, String urlPath) {
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return urlPath.substring(prefixSubstring.length());
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}
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}
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