问题描述
想使用YouTube数据API在我的Android应用程序。当我尝试运行它作为一个Java项目,它运行良好,没有任何错误。但是,当我尝试做同样的事情在我的Android应用程序,该应用程序的力量关闭。下面是从logcat的输出和我的code。
输出logcat的
01-05 00:13:17.198:E / AndroidRuntime(627):致命异常:主要
01-05 00:13:17.198:E / AndroidRuntime(627):java.lang.ExceptionInInitializerError
01-05 00:13:17.198:E / AndroidRuntime(627):在com.example.allinonedata.YouTubeManager.retrieveVideos(YouTubeManager.java:29)
...
01-05 00:13:17.198:E / AndroidRuntime(627):java.lang.NoClassDefFoundError的:产生的原因com.google.gdata.data.media.MediaSource
这里是codemainactivity.java
包com.example.allinonedata;
进口的java.util.List;
进口android.os.Bundle;
进口android.app.Activity;
进口android.view.Menu;
公共类MainActivity延伸活动{
字符串clientID的=Java的codeGeeks;
字符串textQuery =承上启下4;
INT maxResults = 1;
布尔过滤=真;
INT超时= 2000;
@覆盖
公共无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main);
YouTubeManager YM =新YouTubeManager(clientID的);
尝试{
名单< YouTubeVideo>视频= ym.retrieveVideos(textQuery,maxResults,过滤器,超时);
对于(YouTubeVideo youtubeVideo:视频){
的System.out.println(youtubeVideo.getWebPlayerUrl());
的System.out.println(缩略图);
对于(字符串缩略图:youtubeVideo.getThumbnails()){
的System.out.println(\ t+缩略图);
}
的System.out.println(youtubeVideo.getEmbeddedWebPlayerUrl());
的System.out.println(********* *******);
}
}
赶上(例外五)
{
}
}
}
youtubemanager.java
包com.example.allinonedata;
进口的java.net.URL;
进口java.util.LinkedList中;
进口的java.util.List;
进口com.google.gdata.client.youtube.YouTubeQuery;
进口com.google.gdata.client.youtube.YouTubeService;
进口com.google.gdata.data.media.mediarss.MediaThumbnail;
进口com.google.gdata.data.youtube.VideoEntry;
进口com.google.gdata.data.youtube.VideoFeed;
进口com.google.gdata.data.youtube.YouTubeMediaContent;
进口com.google.gdata.data.youtube.YouTubeMediaGroup;
公共类YouTubeManager {
私有静态最后弦乐YOUTUBE_URL =http://gdata.youtube.com/feeds/api/videos;
私有静态最后弦乐YOUTUBE_EMBEDDED_URL =http://www.youtube.com/v/;
私人字符串clientID的;
公共YouTubeManager(字符串clientID的){
this.clientID = clientID的;
}
公开名单< YouTubeVideo> retrieveVideos(字符串textQuery,诠释maxResults,
布尔过滤器,INT超时)抛出异常{
YouTubeService服务=新YouTubeService(clientID的);
service.setConnectTimeout(超时); //米利斯
YouTubeQuery查询=新YouTubeQuery(新的URL(YOUTUBE_URL));
query.setOrderBy(YouTubeQuery.OrderBy.RELEVANCE);
query.setFullTextQuery(textQuery);
query.setSafeSearch(YouTubeQuery.SafeSearch.NONE);
query.setMaxResults(maxResults);
VideoFeed videoFeed = service.query(查询,VideoFeed.class);
名单< VideoEntry>视频= videoFeed.getEntries();
返回convertVideos(视频)
}
私人列表< YouTubeVideo> convertVideos(名单< VideoEntry>视频){
名单< YouTubeVideo> youtubeVideosList =新的LinkedList< YouTubeVideo>();
对于(VideoEntry videoEntry:视频){
YouTubeVideo YTV =新YouTubeVideo();
YouTubeMediaGroup MEDIAGROUP = videoEntry.getMediaGroup();
字符串webPlayerUrl = mediaGroup.getPlayer()的getURL()。
ytv.setWebPlayerUrl(webPlayerUrl);
?V =字符串查询=;
INT指数= webPlayerUrl.indexOf(查询);
字符串embeddedWebPlayerUrl = webPlayerUrl.substring(指数+ query.length());
embeddedWebPlayerUrl = YOUTUBE_EMBEDDED_URL + embeddedWebPlayerUrl;
ytv.setEmbeddedWebPlayerUrl(embeddedWebPlayerUrl);
名单<字符串>缩略图=新的LinkedList<字符串>();
为(MediaThumbnail mediaThumbnail:mediaGroup.getThumbnails()){
thumbnails.add(mediaThumbnail.getUrl());
}
ytv.setThumbnails(缩略图);
名单< YouTubeMedia>媒体=新的LinkedList< YouTubeMedia>();
为(YouTubeMediaContent mediaContent:mediaGroup.getYouTubeContents()){
medias.add(新YouTubeMedia(mediaContent.getUrl(),mediaContent.getType()));
}
ytv.setMedias(媒体);
youtubeVideosList.add(YTV);
}
返回youtubeVideosList;
}
}
在谷歌-API的Java客户端(里面确实有Android的支持,gdata的客户端不同)没有previously支持YouTube数据API ,但与v3的,这是现在整流的释放;现在有很好的Youtube支持,这个客户你需要什么,应该提供给您。看到这里的细节和code样品:
https://developers.google.com/api-客户端库/爪哇/原料药/ YouTube的/ V3
和也以入门指南这里
https://developers.google.com/youtube/v3/getting-started
Am trying to use YouTube Data Api in my android app. When i try to run it as a java project, it runs fine without any errors. But when i try to do the same thing in my android application , the application force closes. Here is the output from logcat and my code.
OUTPUT FROM LOGCAT
01-05 00:13:17.198: E/AndroidRuntime(627): FATAL EXCEPTION: main
01-05 00:13:17.198: E/AndroidRuntime(627): java.lang.ExceptionInInitializerError
01-05 00:13:17.198: E/AndroidRuntime(627): at com.example.allinonedata.YouTubeManager.retrieveVideos(YouTubeManager.java:29)
...
01-05 00:13:17.198: E/AndroidRuntime(627): Caused by: java.lang.NoClassDefFoundError: com.google.gdata.data.media.MediaSource
HERE IS THE CODEmainactivity.java
package com.example.allinonedata;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
public class MainActivity extends Activity {
String clientID = "JavaCodeGeeks";
String textQuery = "nexus 4";
int maxResults = 1;
boolean filter = true;
int timeout = 2000;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
YouTubeManager ym = new YouTubeManager(clientID);
try{
List<YouTubeVideo> videos = ym.retrieveVideos(textQuery, maxResults, filter, timeout);
for (YouTubeVideo youtubeVideo : videos) {
System.out.println(youtubeVideo.getWebPlayerUrl());
System.out.println("Thumbnails");
for (String thumbnail : youtubeVideo.getThumbnails()) {
System.out.println("\t" + thumbnail);
}
System.out.println(youtubeVideo.getEmbeddedWebPlayerUrl());
System.out.println("**************************************************");
}
}
catch(Exception e)
{
}
}
}
youtubemanager.java
package com.example.allinonedata;
import java.net.URL;
import java.util.LinkedList;
import java.util.List;
import com.google.gdata.client.youtube.YouTubeQuery;
import com.google.gdata.client.youtube.YouTubeService;
import com.google.gdata.data.media.mediarss.MediaThumbnail;
import com.google.gdata.data.youtube.VideoEntry;
import com.google.gdata.data.youtube.VideoFeed;
import com.google.gdata.data.youtube.YouTubeMediaContent;
import com.google.gdata.data.youtube.YouTubeMediaGroup;
public class YouTubeManager {
private static final String YOUTUBE_URL = "http://gdata.youtube.com/feeds/api/videos";
private static final String YOUTUBE_EMBEDDED_URL = "http://www.youtube.com/v/";
private String clientID;
public YouTubeManager(String clientID) {
this.clientID = clientID;
}
public List<YouTubeVideo> retrieveVideos(String textQuery, int maxResults,
boolean filter, int timeout) throws Exception {
YouTubeService service = new YouTubeService(clientID);
service.setConnectTimeout(timeout); // millis
YouTubeQuery query = new YouTubeQuery(new URL(YOUTUBE_URL));
query.setOrderBy(YouTubeQuery.OrderBy.RELEVANCE);
query.setFullTextQuery(textQuery);
query.setSafeSearch(YouTubeQuery.SafeSearch.NONE);
query.setMaxResults(maxResults);
VideoFeed videoFeed = service.query(query, VideoFeed.class);
List<VideoEntry> videos = videoFeed.getEntries();
return convertVideos(videos);
}
private List<YouTubeVideo> convertVideos(List<VideoEntry> videos) {
List<YouTubeVideo> youtubeVideosList = new LinkedList<YouTubeVideo>();
for (VideoEntry videoEntry : videos) {
YouTubeVideo ytv = new YouTubeVideo();
YouTubeMediaGroup mediaGroup = videoEntry.getMediaGroup();
String webPlayerUrl = mediaGroup.getPlayer().getUrl();
ytv.setWebPlayerUrl(webPlayerUrl);
String query = "?v=";
int index = webPlayerUrl.indexOf(query);
String embeddedWebPlayerUrl = webPlayerUrl.substring(index+query.length());
embeddedWebPlayerUrl = YOUTUBE_EMBEDDED_URL + embeddedWebPlayerUrl;
ytv.setEmbeddedWebPlayerUrl(embeddedWebPlayerUrl);
List<String> thumbnails = new LinkedList<String>();
for (MediaThumbnail mediaThumbnail : mediaGroup.getThumbnails()) {
thumbnails.add(mediaThumbnail.getUrl());
}
ytv.setThumbnails(thumbnails);
List<YouTubeMedia> medias = new LinkedList<YouTubeMedia>();
for (YouTubeMediaContent mediaContent : mediaGroup.getYouTubeContents()) {
medias.add(new YouTubeMedia(mediaContent.getUrl(), mediaContent.getType()));
}
ytv.setMedias(medias);
youtubeVideosList.add(ytv);
}
return youtubeVideosList;
}
}
The google-api-java-client (which does have Android support, unlike the gdata-client) didn't previously support the Youtube Data API, but with the release of v3 this is now rectified; there is good Youtube support now with this client that should provide you what you need. See here for details and code samples:
https://developers.google.com/api-client-library/java/apis/youtube/v3
and also to Getting started Guide here
https://developers.google.com/youtube/v3/getting-started
这篇关于在Android中使用YouTube数据API的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!