Android
Youtube-API

Opmerkingen

StandAlonePlayerActivity wordt gestart

1. Start zelfstandige speleractiviteit

        Intent standAlonePlayerIntent = YouTubeStandalonePlayer.createVideoIntent((Activity) context,
                Config.YOUTUBE_API_KEY, // which you have created in step 3
                videoId, // video which is to be played
                100,     //The time, in milliseconds, where playback should start in the video
                true,    //autoplay or not
                false);   //lightbox mode or not; false will show in fullscreen
        context.startActivity(standAlonePlayerIntent);
   

Activiteit die YouTubeBaseActivity uitbreidt

public class CustomYouTubeActivity extends YouTubeBaseActivity implements YouTubePlayer.OnInitializedListener, YouTubePlayer.PlayerStateChangeListener {

    private YouTubePlayerView mPlayerView;
    private YouTubePlayer mYouTubePlayer;
    private String mVideoId = "B08iLAtS3AQ";
    private String mApiKey;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mApiKey = Config.YOUTUBE_API_KEY;
        mPlayerView = new YouTubePlayerView(this);
        mPlayerView.initialize(mApiKey, this); // setting up OnInitializedListener
        addContentView(mPlayerView, new LayoutParams(LayoutParams.MATCH_PARENT,
                LayoutParams.MATCH_PARENT)); //show it in full screen
    }

    //Called when initialization of the player succeeds.
    @Override
    public void onInitializationSuccess(YouTubePlayer.Provider provider,
                                        YouTubePlayer player,
                                        boolean wasRestored) {

        player.setPlayerStateChangeListener(this); // setting up the player state change listener
        this.mYouTubePlayer = player;
        if (!wasRestored)
            player.cueVideo(mVideoId);
    }

        @Override
    public void onInitializationFailure(YouTubePlayer.Provider provider,
                                        YouTubeInitializationResult errorReason) {

        Toast.makeText(this, "Error While initializing", Toast.LENGTH_LONG).show();
    }

    @Override
    public void onAdStarted() {
    }

    @Override
    public void onLoaded(String videoId) { //video has been loaded
        if(!TextUtils.isEmpty(mVideoId) && !this.isFinishing() && mYouTubePlayer != null)
            mYouTubePlayer.play(); // if we dont call play then video will not auto play, but user still has the option to play via play button
    }

    @Override
    public void onLoading() {
    }

    @Override
    public void onVideoEnded() {
    }

    @Override
    public void onVideoStarted() {

    }

    @Override
    public void onError(ErrorReason reason) {
        Log.e("onError", "onError : " + reason.name());
    }

}

YoutubePlayerFragment in portret Activty

De volgende code implementeert een eenvoudige YouTubePlayerFragment. De lay-out van de activiteit is vergrendeld in de portretmodus en wanneer de oriëntatie verandert of de gebruiker op volledig scherm op YouTubePlayer klikt, verandert deze in lansscape waarbij de YouTubePlayer het scherm vult. Het YouTubePlayerFragment hoeft een activiteit uit de YouTube-bibliotheek niet uit te breiden. Het moet YouTubePlayer.OnInitializedListener implementeren om YouTubePlayer te initialiseren. Dus de klasse van onze activiteit is de volgende

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;

import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayerFragment;

public class MainActivity extends AppCompatActivity implements YouTubePlayer.OnInitializedListener {
   
    public static final String API_KEY ;
    public static final String VIDEO_ID = "B08iLAtS3AQ";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        YouTubePlayerFragment youTubePlayerFragment = (YouTubePlayerFragment) getFragmentManager()
                .findFragmentById(R.id.youtubeplayerfragment);

        youTubePlayerFragment.initialize(API_KEY, this);

    }

    /**
     *
     * @param provider The provider which was used to initialize the YouTubePlayer
     * @param youTubePlayer A YouTubePlayer which can be used to control video playback in the provider.
     * @param wasRestored Whether the player was restored from a previously saved state, as part of the YouTubePlayerView
     *                    or YouTubePlayerFragment restoring its state. true usually means playback is resuming from where
     *                    the user expects it would, and that a new video should not be loaded
     */
    @Override
    public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean wasRestored) {
                 
youTubePlayer.setFullscreenControlFlags(YouTubePlayer.FULLSCREEN_FLAG_CONTROL_ORIENTATION |
                    YouTubePlayer.FULLSCREEN_FLAG_ALWAYS_FULLSCREEN_IN_LANDSCAPE);


        if(!wasRestored) {
            youTubePlayer.cueVideo(VIDEO_ID);
        }
    }

    /**
     *
     * @param provider The provider which failed to initialize a YouTubePlayer.
     * @param error The reason for this failure, along with potential resolutions to this failure.
     */
    @Override
    public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult error) {
        
        final int REQUEST_CODE = 1;

        if(error.isUserRecoverableError()) {
            error.getErrorDialog(this,REQUEST_CODE).show();
        } else {
            String errorMessage = String.format("There was an error initializing the YoutubePlayer (%1$s)", error.toString());
            Toast.makeText(this, errorMessage, Toast.LENGTH_LONG).show();
        }
    }
}

Een YouTubePlayerFragment kan als volgt aan de lay-out xaml van de activiteit worden toegevoegd

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:tools="http://schemas.android.com/tools"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:orientation="vertical"
              android:paddingBottom="@dimen/activity_vertical_margin"
              android:paddingLeft="@dimen/activity_horizontal_margin"
              android:paddingRight="@dimen/activity_horizontal_margin"
              android:paddingTop="@dimen/activity_vertical_margin"
              tools:context=".MainActivity">

    <fragment
        android:id="@+id/youtubeplayerfragment"
        android:name="com.google.android.youtube.player.YouTubePlayerFragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>


    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">


            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="20dp"
                android:text="This is a YoutubePlayerFragment example"
                android:textStyle="bold"/>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"

                android:layout_gravity="center_horizontal"
                android:layout_marginTop="20dp"
                android:text="This is a YoutubePlayerFragment example"
                android:textStyle="bold"/>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="20dp"
                android:text="This is a YoutubePlayerFragment example"
                android:textStyle="bold"/>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="20dp"
                android:text="This is a YoutubePlayerFragment example"
                android:textStyle="bold"/>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="20dp"
                android:text="This is a YoutubePlayerFragment example"
                android:textStyle="bold"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="20dp"
                android:text="This is a YoutubePlayerFragment example"
                android:textStyle="bold"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="20dp"
                android:text="This is a YoutubePlayerFragment example"
                android:textStyle="bold"/>

        </LinearLayout>
    </ScrollView>

</LinearLayout>

Ten slotte moet u de volgende attributen toevoegen aan uw manifestbestand in de tag van de activiteit

android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait"

YouTube Player API

De Android API-sleutel verkrijgen:

Eerst moet u de SHA-1-vingerafdruk op uw machine krijgen met java keytool. Voer de onderstaande opdracht in cmd / terminal uit om de SHA-1-vingerafdruk te krijgen.

keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android

MainActivity.java

public class Activity extends YouTubeBaseActivity implements YouTubePlayer.OnInitializedListener {

    private static final int RECOVERY_DIALOG_REQUEST = 1;

    // YouTube player view
    private YouTubePlayerView youTubeView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.activity_main);

        youTubeView = (YouTubePlayerView) findViewById(R.id.youtube_view);

        // Initializing video player with developer key
        youTubeView.initialize(Config.DEVELOPER_KEY, this);

    }

    @Override
    public void onInitializationFailure(YouTubePlayer.Provider provider,
                                        YouTubeInitializationResult errorReason) {
        if (errorReason.isUserRecoverableError()) {
            errorReason.getErrorDialog(this, RECOVERY_DIALOG_REQUEST).show();
        } else {
            String errorMessage = String.format(
                    getString(R.string.error_player), errorReason.toString());
            Toast.makeText(this, errorMessage, Toast.LENGTH_LONG).show();
        }
    }

    @Override
    public void onInitializationSuccess(YouTubePlayer.Provider provider,
                                        YouTubePlayer player, boolean wasRestored) {
        if (!wasRestored) {

            // loadVideo() will auto play video
            // Use cueVideo() method, if you don't want to play it automatically
            player.loadVideo(Config.YOUTUBE_VIDEO_CODE);

            // Hiding player controls
            player.setPlayerStyle(YouTubePlayer.PlayerStyle.CHROMELESS);
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == RECOVERY_DIALOG_REQUEST) {
            // Retry initialization if user performed a recovery action
            getYouTubePlayerProvider().initialize(Config.DEVELOPER_KEY, this);
        }
    }

    private YouTubePlayer.Provider getYouTubePlayerProvider() {
        return (YouTubePlayerView) findViewById(R.id.youtube_view);
    }    
}

Maak Config.java bestand Config.java . Dit bestand bevat de Google Console API-ontwikkelaarssleutel en YouTube-video-ID

Config.java

public class Config {

    // Developer key
    public static final String DEVELOPER_KEY = "AIzaSyDZtE10od_hXM5aXYEh6Zn7c6brV9ZjKuk";

    // YouTube video id
    public static final String YOUTUBE_VIDEO_CODE = "_oEA18Y8gM0";
}

xml-bestand

<com.google.android.youtube.player.YouTubePlayerView
                android:id="@+id/youtube_view"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginBottom="30dp" />

YouTube Data API gebruiken op Android

In dit voorbeeld wordt uitgelegd hoe u afspeellijstgegevens kunt ophalen met de YouTube Data API op Android.

SHA-1-vingerafdruk

Eerst moet u een SHA-1-vingerafdruk krijgen voor uw machine. Er zijn verschillende methoden om het op te halen. U kunt elke methode kiezen die in deze Q&A wordt geboden.

Google API-console en YouTube-sleutel voor Android

Nu u een SHA-1-vingerafdruk hebt, opent u de Google API-console en maakt u een project. Ga naar deze pagina en maak een project met die SHA-1-sleutel en schakel de YouTube Data API in. Nu krijgt u een sleutel. Deze sleutel wordt gebruikt om verzoeken van Android te verzenden en gegevens op te halen.

Grijp deel

Je moet de volgende regels toevoegen aan je Gradle-bestand voor de YouTube Data API:

compile 'com.google.apis:google-api-services-youtube:v3-rev183-1.22.0'

Om de native client van YouTube te gebruiken om verzoeken te verzenden, moeten we de volgende regels toevoegen in Gradle:

compile 'com.google.http-client:google-http-client-android:+'
compile 'com.google.api-client:google-api-client-android:+'
compile 'com.google.api-client:google-api-client-gson:+'

De volgende configuratie moet ook worden toegevoegd in Gradle om conflicten te voorkomen:

configurations.all {
    resolutionStrategy.force 'com.google.code.findbugs:jsr305:3.0.2'
} 

Hieronder wordt getoond hoe de gradle.build er uiteindelijk uit zou zien.

build.gradle

apply plugin: 'com.android.application'
android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.aam.skillschool"
        minSdkVersion 19
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    configurations.all {
        resolutionStrategy.force 'com.google.code.findbugs:jsr305:3.0.2'
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.google.apis:google-api-services-youtube:v3-rev183-1.22.0'
    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support:support-v4:25.3.1'
    compile 'com.google.http-client:google-http-client-android:+'
    compile 'com.google.api-client:google-api-client-android:+'
    compile 'com.google.api-client:google-api-client-gson:+'
}

Nu komt het Java-gedeelte. Omdat we HttpTransport zullen gebruiken voor netwerken en GsonFactory voor het converteren van JSON naar POJO, hebben we geen andere bibliotheek nodig om verzoeken te verzenden.

Nu wil ik laten zien hoe je afspeellijsten kunt krijgen via de YouTube API door de afspeellijst-ID's op te geven. Voor deze taak zal ik AsyncTask . Bekijk de YouTube Data API om te begrijpen hoe we parameters opvragen en om de stroom te begrijpen.

public class GetPlaylistDataAsyncTask extends AsyncTask<String[], Void, PlaylistListResponse> {
    private static final String YOUTUBE_PLAYLIST_PART = "snippet";
    private static final String YOUTUBE_PLAYLIST_FIELDS = "items(id,snippet(title))";

    private YouTube mYouTubeDataApi;

    public GetPlaylistDataAsyncTask(YouTube api) {
        mYouTubeDataApi = api;
    }

    @Override
    protected PlaylistListResponse doInBackground(String[]... params) {

        final String[] playlistIds = params[0];

        PlaylistListResponse playlistListResponse;
        try {
            playlistListResponse = mYouTubeDataApi.playlists()
                    .list(YOUTUBE_PLAYLIST_PART)
                    .setId(TextUtils.join(",", playlistIds))
                    .setFields(YOUTUBE_PLAYLIST_FIELDS)
                    .setKey(AppConstants.YOUTUBE_KEY) //Here you will have to provide the keys
                    .execute();
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }

        return playlistListResponse;
    }
}

De bovenstaande asynchrone taak retourneert een exemplaar van PlaylistListResponse , een ingebouwde klasse van de YouTube SDK. Het heeft alle verplichte velden, dus we hoeven niet zelf POJO's te maken.

Ten slotte moeten we in onze MainActivity het volgende doen:

public class MainActivity extends AppCompatActivity {
    private YouTube mYoutubeDataApi;
    private final GsonFactory mJsonFactory = new GsonFactory();
    private final HttpTransport mTransport = AndroidHttp.newCompatibleTransport();
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_review);
        mYoutubeDataApi = new YouTube.Builder(mTransport, mJsonFactory, null)
                .setApplicationName(getResources().getString(R.string.app_name))
                .build();
        String[] ids = {"some playlists ids here seperated by "," };
        new GetPlaylistDataAsyncTask(mYoutubeDataApi) {
            ProgressDialog progressDialog = new ProgressDialog(getActivity());

            @Override
            protected void onPreExecute() {
                progressDialog.setTitle("Please wait.....");
                progressDialog.show();
                super.onPreExecute();
            }

            @Override
            protected void onPostExecute(PlaylistListResponse playlistListResponse) {
                super.onPostExecute(playlistListResponse);
                //Here we get the playlist data
                progressDialog.dismiss();
                Log.d(TAG, playlistListResponse.toString());
            }
        }.execute(ids);
    }
}