5
我有一個GDATA鏈接，我想在我的應用程序中使用。此鏈接包含播放列表，我希望該播放列表在ListView中顯示。然後，用戶將選擇他/她想要的視頻，然後使用本地Youtube應用程序在應用程序旁邊播放。Youtube播放列表顯示在ListView中
請給我一個直觀的教程。我知道YouTube API頁面包含所有信息，但我可以對其進行正面或反面的描述。
A
回答
1
我希望這會給你一個想法嘗試這個（只是一個例子），如果你有更好的解決方案請讓我知道。
package com.test.utubevdo;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;
import android.app.Activity;
import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.Gallery;
import android.widget.ListView;
import android.widget.VideoView;
public class AndroidThumbnailList extends Activity{
ArrayList <YTBVideo> videos = new ArrayList<YTBVideo>();
ProgressDialog progressDialog = null;
VideoView vdovw_1 = null;
String vdoURL = "";
ListView listview = null;
Gallery gallery = null;
Dialog noDataAlert = null;
Handler imageLoaderHandler = new Handler() {
public void handleMessage(final Message msg) {
progressDialog.dismiss();
if(msg.what == 1){
showErrorMessage("Communication Error", "Error Occured while retrieving the data from Youtube.\n Please try again");
}else{
System.out.println("videos ::"+videos.size());
//listview.setAdapter(new VideoViewAdapter(AndroidThumbnailList.this, videos));
gallery.setAdapter(new VideoViewAdapter1(AndroidThumbnailList.this, videos));
}
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON, android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
//setContentView(R.layout.imagelist_layout);
//listview = (ListView)findViewById(R.id.listView1);
setContentView(R.layout.gallery_imagelist_layout);
gallery = (Gallery) findViewById(R.id.galleryView);
gallery.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View view, int position, long id) {
Intent videoDisplayIntent = new Intent("com.test.utubevdo.VIEW_VIDEO");
System.out.println("String.valueOf(view.getTag()) :::"+((YTBVideo)videos.get(position)).getId());
videoDisplayIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
videoDisplayIntent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
videoDisplayIntent.putExtra("VIDEO_ID", ((YTBVideo)videos.get(position)).getId());
startActivity(videoDisplayIntent);
}
});
progressDialog = ProgressDialog.show(this, "Loading Video Images", "Loading Video Images", true, false);
// setListAdapter(new MyThumbnaildapter(AndroidThumbnailList.this, R.layout.row, videoFileList));
}
/*@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
// TODO Auto-generated method stub
super.onCreateContextMenu(menu, v, menuInfo);
}*/
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
try{
DownloaderTAsk downloaderTAsk = (DownloaderTAsk) new DownloaderTAsk().execute(getApplicationContext());
}catch (Exception e) {
// TODO: handle exception
}
}
class DownloaderTAsk extends AsyncTask{
@Override
protected Object doInBackground(Object... arg0) {
// TODO Auto-generated method stub
try{
printVideoFEEJSONString("http://gdata.youtube.com/feeds/api/videos?alt=jsonc&q=football+-soccer&orderby=published&start-index=11&max-results=10&v=2");
//printVideoFEEJSONString("https://gdata.youtube.com/feeds/api/videos?alt=json&q=football+-soccer&orderby=published&start-index=11&max-results=10&v=2");
imageLoaderHandler.sendEmptyMessage(0);
}catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
imageLoaderHandler.sendEmptyMessage(1);
}
return null;
}
@Override
protected void onPostExecute(Object result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
}
}
public void printVideoFEEJSONString(String feedURL){
BufferedReader bufferedReader = null;
try{
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(feedURL);
HttpResponse response = client.execute(request);
bufferedReader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer jsonStringBuffer = new StringBuffer("");
String line = "";
String newLine = System.getProperty("line.separator");
while ((line = bufferedReader.readLine()) != null) {
jsonStringBuffer.append(line + newLine);
}
String appUpdatorJsonString = jsonStringBuffer.toString();
System.out.println("YOUTUBE VIDEO FEED JSON :"+appUpdatorJsonString);
JSONObject updaterAppJsonObject = new JSONObject(appUpdatorJsonString);
System.out.println("YOUTUBE VIDEO FEED JSON OBJECT :"+updaterAppJsonObject);
processYoutubeVideoFEEJSONObject(updaterAppJsonObject);
}catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}
}
public void processYoutubeVideoFEEJSONObject(JSONObject updaterAppJsonObject){
JSONObject dataJSONObject = null;
JSONArray itemsJSONArray = null;
JSONObject itemsJSONObject = null;
JSONObject linkJSONObject = null;
String yvURL = "";
YTBVideo yVideo = null;
try{
dataJSONObject = updaterAppJsonObject.getJSONObject("data");
itemsJSONArray = dataJSONObject.getJSONArray("items");
for(int i = 0; i < itemsJSONArray.length(); i++){
yVideo = new YTBVideo();
// for(int i = 0; i < 1; i++){
itemsJSONObject = itemsJSONArray.getJSONObject(i);
yVideo.setId(itemsJSONObject.getString("id"));
yVideo.setThumbNailURL(itemsJSONObject.getJSONObject("thumbnail").getString("sqDefault"));
yVideo.setVideoImageURL(itemsJSONObject.getJSONObject("player").getString("default"));
yVideo.setTitle(itemsJSONObject.getString("title"));
yvURL = itemsJSONObject.getJSONObject("player").getString("default");
String videoURL = yvURL.substring(0,yvURL.indexOf("&"));
vdoURL = videoURL;
System.out.println("Youtube URL is ::"+videoURL);
System.out.println("videoURL ::"+videoURL);
yVideo.setThumbnailImage(preloadBitmap(yVideo));
videos.add(yVideo);
}
}catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}
}
private Bitmap preloadBitmap(YTBVideo yTBVideo) throws MalformedURLException,IOException {
Bitmap photoBitmap= null;
try{
BitmapFactory.Options imageOptions = null;
imageOptions = new BitmapFactory.Options();
imageOptions.outHeight = 250;
imageOptions.outHeight = 150;
String FlickrPhotoPath = yTBVideo.getThumbNailURL();
URL FlickrPhotoUrl = null;
System.out.println("FlickrPhotoPath:::::::"+FlickrPhotoPath);
//try {
FlickrPhotoUrl = new URL(FlickrPhotoPath);
HttpURLConnection httpConnection = (HttpURLConnection) FlickrPhotoUrl.openConnection();
httpConnection.setDoInput(true);
httpConnection.connect();
InputStream inputStream = httpConnection.getInputStream();
//photoBitmap = BitmapFactory.decodeStream(inputStream);
photoBitmap = BitmapFactory.decodeStream(inputStream,null,imageOptions);
System.out.println("photoBitmap:::::::"+photoBitmap);
/*} catch (MalformedURLException e) {
//e.printStackTrace();
} catch (IOException e) {
//e.printStackTrace();
}*/
}catch (Exception e) {
// TODO: handle exception
//showErrorMessage("communication error", "Unable to connect to Flickr Server");
e.printStackTrace();
}
return photoBitmap;
}
protected void showErrorMessage(String messageLine1, String message)
{
noDataAlert = Utiliy.getAlertMessage(getBaseContext(), this, messageLine1.toUpperCase()+":\n"+message, 1);
noDataAlert.getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
noDataAlert.setCanceledOnTouchOutside(true);
noDataAlert.setCancelable(true);
Button yesButton = (Button)noDataAlert.findViewById(R.id.alert_popup_yes_button);
yesButton.setText(" OK ");
yesButton.setTextSize(24);
yesButton.setPadding(5, 5, 5, 5);
yesButton.setVisibility(View.VISIBLE);
yesButton.setOnClickListener(new OnClickListener(){
public void onClick(View view){
noDataAlert.dismiss();
finish();
}
});
noDataAlert.show();
}
}
package com.test.utubevdo;
import java.util.List;
import com.keyes.youtube.OpenYouTubePlayerActivity;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Bundle;
public class DisplayYoutubeVideo extends Activity {
String vdoID = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
vdoID = (String) getIntent().getExtras().get("VIDEO_ID");
System.out.println("vdoID :::"+vdoID);
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
startVideo(vdoID);
}
private void startVideo (String videoID) { // default youtube app
Intent i = new Intent (Intent . ACTION_VIEW , Uri . parse ("vnd.youtube:" + videoID));
List <ResolveInfo> list = getPackageManager(). queryIntentActivities (i , PackageManager . MATCH_DEFAULT_ONLY);
if (list . size() == 0) {
//write you own activity to display the video, if default youtube video display class is not available or else use the default class it self
}
System.out.println("Intent Actin :"+i.getAction());
startActivity (i);
}
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.utubevdo"
android:versionCode="1"
android:versionName="1.0">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="8"/>
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name="com.test.utubevdo.AndroidThumbnailList"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.test.utubevdo.DisplayYoutubeVideo"
android:label="@string/app_name">
<intent-filter>
<action android:name="com.test.utubevdo.VIEW_VIDEO" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
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