Cách tạo một ứng dụng chạy video trên Android application

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal" >

        <ImageButton
            android:id="@+id/thumb"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_launcher" />
        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="TextView" />
    </LinearLayout>

</LinearLayout>

/*
 * Copyright 2012 Google Inc. All Rights Reserved.
 *
 * 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.framgia.youtubeapi;

import com.google.android.youtube.player.YouTubeBaseActivity;
import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.hathi.simpleplayer.R;

import android.content.Intent;
import android.widget.Toast;

/**
 * An abstract activity which deals with recovering from errors which may occur during API
 * initialization, but can be corrected through user action.
 */
public abstract class YouTubeFailureRecoveryActivity extends YouTubeBaseActivity implements
    YouTubePlayer.OnInitializedListener {

  private static final int RECOVERY_DIALOG_REQUEST = 1;

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

  protected abstract YouTubePlayer.Provider getYouTubePlayerProvider();

}

package com.framgia.youtubeapi;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.TextView;

import com.framgia.youtubeapi.R;
import com.squareup.picasso.Picasso;

public class MainActivity extends Activity {

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

		ImageButton thub = (ImageButton)findViewById(R.id.thumb);
		TextView txtTitle = (TextView)findViewById(R.id.title);
		String url = "http://img.youtube.com/vi/"+DeveloperKey.KEY_VIDEO+"/default.jpg"; // Đây là cách lấy ảnh icon cho video đó. Sau đó hiển thị nó vào view bằng Picasso
		Picasso.with(MainActivity.this).load(url).into(thub);
		txtTitle.setText(DeveloperKey.TITLE_VIDEO);

		thub.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				// Khi click vào icon video thì sẽ hiện tới trang xem video
				Intent intent = new Intent(MainActivity.this, PlayerActivity.class);
				startActivity(intent);
			}
		});
	}
}

package com.framgia.youtubeapi;

import com.framgia.youtubeapi.R;
import com.google.android.youtube.player.YouTubeBaseActivity;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayerView;

import android.os.Bundle;

public class PlayerActivity extends YouTubeFailureRecoveryActivity {

	  @Override
	  public void onCreate(Bundle savedInstanceState) {
	    super.onCreate(savedInstanceState);
	    setContentView(R.layout.activity_player);

	    YouTubePlayerView youTubeView = (YouTubePlayerView) findViewById(R.id.player_view);
	    youTubeView.initialize(DeveloperKey.DEVELOPER_KEY, this);
	  }

	  @Override
	  public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player,
	      boolean wasRestored) {
	    if (!wasRestored) {
	      player.cueVideo(DeveloperKey.KEY_VIDEO);
	    }
	  }

	  @Override
	  protected YouTubePlayer.Provider getYouTubePlayerProvider() {
	    return (YouTubePlayerView) findViewById(R.id.youtube_view);
	  }

	}