android mediaplayer 自定义 mediacontroller

以前做的一个项目，与流媒体相关的，那时学了好多相关知识，还写了一个自定义的 MediaPlayer Controller。现在稍微有点时间，简单整理一下，顺便分享出来。你要做的只是实现 Controller.ControlOper，并把 Controller 设置为你的 MediaPlayer 的控制器即可。注意那个mPlayer.setDataSource（）里面那个 url，是个开放的
rtsp 测试地址，可能会失效哦，如果失效的话，会看到“黑屏”，出现这种情况的话，请自己换个别的测试地址哦。
另外，在 onDestory() 里面要记得释放相关资源哦！

 @Override
 protected void onDestroy() {
  super.onDestroy();
  releaseMediaPlayer();
 }

 private void releaseMediaPlayer() {

  mController.removeHandlerCallback();
  if (mPlayer != null) {
      mPlayer.stop();
      mPlayer.release();
  }
 }

 public void removeHandlerCallback() {
    if(mHandler != null) {
      mHandler.removeCallbacksAndMessages(null);
      mHandler = null;
    }
 }

一、MediaplayerController

MediaplayerController（以下简称 Controller）是一个用于 MediaPlayer 的 view 类。该 view 上有通用的控件，如播放/暂停，前进/后退等。你需要做的只是实现 Controller.ControlOper 接口，并把该控制器设置为你的 MediaPlayer 的控制器即可。控制器的 view 都抽出来了，你可以根据需要进行修改，做出漂亮的控制器来了。

public class Controller extends FrameLayout {

    private static final String LOG_TAG = Controller.class.getName();

    private static final int    FADE_OUT = 1;
    private static final int    DEFTIMEOUT = 3000;
    private static final int    SHOW_PROGRESS = 2;

    private ImageButton         mBtnPause;
    private ImageButton         mBtnFfwd;
    private ImageButton         mBtnRew;
    private ImageButton         mBtnNext;
    private ImageButton         mBtnPrev;
    private ImageButton         mBtnFullscreen;
    private Handler             mHandler = new MsgHandler(this);

    private ControlOper             mPlayerCtrl;
    private Context             mContext;
    private ViewGroup           mAnchorVGroup;
    private View                mRootView;
    private ProgressBar         mProgress;
    private TextView            mEndTime, mCurTime;
    private boolean             mIsShowing;
    private boolean             mIsDragging;    
    private boolean             mUseFastForward;
    private boolean             mFromXml;
    private boolean             mIsListenersSet;
    private View.OnClickListener mNextListener, mPrevListener;
    StringBuilder               mStrBuilder;
    Formatter                   mFormatter;

    public Controller(Context context) {
        this(context, true);
    }

    public Controller(Context context, AttributeSet attrs) {
        super(context, attrs);

        mRootView = null;
        mContext = context;
        mUseFastForward = true;
        mFromXml = true;
    }

    public Controller(Context context, boolean useFastForward) {
        super(context);
        mContext = context;
        mUseFastForward = useFastForward;
    }

    public void removeHandlerCallback() {
        if(mHandler != null) {
            mHandler.removeCallbacksAndMessages(null);
            mHandler = null;
        }
    }

    @Override
    public void onFinishInflate() {
        if (mRootView != null) {
            initCtrlView(mRootView);
        }
    }

    public void setMediaPlayer(ControlOper player) {
        mPlayerCtrl = player;
        updatePausePlay();
        updateFullScreen();
    }

    public void setAnchorView(ViewGroup view) {

        mAnchorVGroup = view;
        FrameLayout.LayoutParams frameParams = new FrameLayout.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT
        );
        removeAllViews();

        View v = createCtrlView();
        addView(v, frameParams);
    }

    protected View createCtrlView() {

        LayoutInflater inflate = (LayoutInflater) mContext
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        mRootView = inflate.inflate(R.layout.controller, null);
        initCtrlView(mRootView);

        return mRootView;
    }

    private void initCtrlView(View v) {

        mBtnPause = (ImageButton) v.findViewById(R.id.pause);
        if (mBtnPause != null) {
            mBtnPause.requestFocus();
            mBtnPause.setOnClickListener(mPauseListener);
        }

        mBtnFullscreen = (ImageButton) v.findViewById(R.id.fullscreen);
        if (mBtnFullscreen != null) {
            mBtnFullscreen.requestFocus();
            mBtnFullscreen.setOnClickListener(mFullscreenListener);
        }

        mBtnFfwd = (ImageButton) v.findViewById(R.id.ffwd);
        if (mBtnFfwd != null) {
            mBtnFfwd.setOnClickListener(mFfwdListener);
            if (!mFromXml) {
                mBtnFfwd.setVisibility(mUseFastForward ? View.VISIBLE : View.GONE);
            }
        }

        mBtnRew = (ImageButton) v.findViewById(R.id.rew);
        if (mBtnRew != null) {
            mBtnRew.setOnClickListener(mRewListener);
            if (!mFromXml) {
                mBtnRew.setVisibility(mUseFastForward ? View.VISIBLE : View.GONE);
            }
        }

        // By default these are hidden. They will be enabled when setPrevNextListeners() is called 
        mBtnNext = (ImageButton) v.findViewById(R.id.next);
        if (mBtnNext != null && !mFromXml && !mIsListenersSet) {
            mBtnNext.setVisibility(View.GONE);
        }

        mBtnPrev = (ImageButton) v.findViewById(R.id.prev);
        if (mBtnPrev != null && !mFromXml && !mIsListenersSet) {
            mBtnPrev.setVisibility(View.GONE);
        }

        mProgress = (ProgressBar) v.findViewById(R.id.mediacontroller_progress);
        if (mProgress != null) {
            if (mProgress instanceof SeekBar) {
                SeekBar seeker = (SeekBar) mProgress;
                seeker.setOnSeekBarChangeListener(mSeekListener);
            }
            mProgress.setMax(1000);
        }

        mEndTime = (TextView) v.findViewById(R.id.time);
        mCurTime = (TextView) v.findViewById(R.id.time_current);
        mStrBuilder = new StringBuilder();
        mFormatter = new Formatter(mStrBuilder, Locale.getDefault());

        installPrevNextListeners();
    }

    /**
     * Show the controller on screen. It will go away automatically after
     * 3 seconds of inactivity.
     */
    public void show() {
        show(DEFTIMEOUT);
    }

    /**
     * Disable pause or seek buttons if the stream cannot be paused or seeked.
     * This requires the control interface to be a MediaPlayerControlExt
     */
    private void disableUnsupportedButtons() {
        if (mPlayerCtrl == null) {
            return;
        }

        try {
            if (mBtnPause != null && !mPlayerCtrl.canPause()) {
                mBtnPause.setEnabled(false);
            }
            if (mBtnRew != null && !mPlayerCtrl.canSeekBackward()) {
                mBtnRew.setEnabled(false);
            }
            if (mBtnFfwd != null && !mPlayerCtrl.canSeekForward()) {
                mBtnFfwd.setEnabled(false);
            }
        } catch (IncompatibleClassChangeError ex) {

        }
    }

    public void show(int timeout) {
        if (!mIsShowing && mAnchorVGroup != null) {
            setProgress();
            if (mBtnPause != null) {
                mBtnPause.requestFocus();
            }
            disableUnsupportedButtons();

            FrameLayout.LayoutParams tlp = new FrameLayout.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT,
                Gravity.BOTTOM
            );

            mAnchorVGroup.addView(this, tlp);
            mIsShowing = true;
        }
        updatePausePlay();
        updateFullScreen();        

        mHandler.sendEmptyMessage(SHOW_PROGRESS);

        Message msg = mHandler.obtainMessage(FADE_OUT);
        if (timeout != 0) {
            mHandler.removeMessages(FADE_OUT);
            mHandler.sendMessageDelayed(msg, timeout);
        }
    }

    public boolean isShowing() {
        return mIsShowing;
    }

    /**
     * Remove the controller from the screen.
     */
    public void hide() {
        if (mAnchorVGroup == null) {
            return;
        }

        try {
            mAnchorVGroup.removeView(this);
            if(mHandler != null) {
                mHandler.removeMessages(SHOW_PROGRESS);
            }
        } catch (IllegalArgumentException ex) {
            Log.w("MediaController", "already removed");
        }
        mIsShowing = false;
    }

    private String stringForTime(int timeMs) {
        int totalSeconds = timeMs / 1000;

        int seconds = totalSeconds % 60;
        int minutes = (totalSeconds / 60) % 60;
        int hours   = totalSeconds / 3600;

        mStrBuilder.setLength(0);
        if (hours > 0) {
            return mFormatter.format("%d:%02d:%02d", hours, minutes, seconds).toString();
        } else {
            return mFormatter.format("%02d:%02d", minutes, seconds).toString();
        }
    }

    private int setProgress() {
        if (mPlayerCtrl == null || mIsDragging) {
            return 0;
        }

        int position = mPlayerCtrl.getCurPosition();
        int duration = mPlayerCtrl.getDuration();
        if (mProgress != null) {
            if (duration > 0) {
                // use long to avoid overflow
                long pos = 1000L * position / duration;
                mProgress.setProgress( (int) pos);
            }
            int percent = mPlayerCtrl.getBufPercent();
            mProgress.setSecondaryProgress(percent * 10);
        }

        if (mEndTime != null)
            mEndTime.setText(stringForTime(duration));
        if (mCurTime != null)
            mCurTime.setText(stringForTime(position));

        return position;
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        show(DEFTIMEOUT);
        return true;
    }

    @Override
    public boolean onTrackballEvent(MotionEvent ev) {
        show(DEFTIMEOUT);
        return false;
    }

    @Override
    public boolean dispatchKeyEvent(KeyEvent event) {
        if (mPlayerCtrl == null) {
            return true;
        }

        int keyCode = event.getKeyCode();
        final boolean uniqueDown = event.getRepeatCount() == 0
                && event.getAction() == KeyEvent.ACTION_DOWN;
        if (keyCode ==  KeyEvent.KEYCODE_HEADSETHOOK
                || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE
                || keyCode == KeyEvent.KEYCODE_SPACE) {
            if (uniqueDown) {
                doPauseResume();
                show(DEFTIMEOUT);
                if (mBtnPause != null) {
                    mBtnPause.requestFocus();
                }
            }
            return true;
        } else if (keyCode == KeyEvent.KEYCODE_MEDIA_PLAY) {
            if (uniqueDown && !mPlayerCtrl.isPlaying()) {
                mPlayerCtrl.start();
                updatePausePlay();
                show(DEFTIMEOUT);
            }
            return true;
        } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP
                || keyCode == KeyEvent.KEYCODE_MEDIA_PAUSE) {
            if (uniqueDown && mPlayerCtrl.isPlaying()) {
                mPlayerCtrl.pause();
                updatePausePlay();
                show(DEFTIMEOUT);
            }
            return true;
        } else if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
                || keyCode == KeyEvent.KEYCODE_VOLUME_UP
                || keyCode == KeyEvent.KEYCODE_VOLUME_MUTE) {
            // don't show the controls for volume adjustment
            return super.dispatchKeyEvent(event);
        } else if (keyCode == KeyEvent.KEYCODE_BACK || keyCode == KeyEvent.KEYCODE_MENU) {
            if (uniqueDown) {
                hide();
            }
            return true;
        }

        show(DEFTIMEOUT);
        return super.dispatchKeyEvent(event);
    }

    private View.OnClickListener mPauseListener = new View.OnClickListener() {
        public void onClick(View v) {
            doPauseResume();
            show(DEFTIMEOUT);
        }
    };

    private View.OnClickListener mFullscreenListener = new View.OnClickListener() {
        public void onClick(View v) {
            doToggleFullscreen();
            show(DEFTIMEOUT);
        }
    };

    public void updatePausePlay() {
        if (mRootView == null || mBtnPause == null || mPlayerCtrl == null) {
            return;
        }

        if (mPlayerCtrl.isPlaying()) {
            mBtnPause.setImageResource(R.drawable.pause);
        } else {
            mBtnPause.setImageResource(R.drawable.play);
        }
    }

    public void updateFullScreen() {
        if (mRootView == null || mBtnFullscreen == null || mPlayerCtrl == null) {
            return;
        }

        if (mPlayerCtrl.isFullScreen()) {
            mBtnFullscreen.setImageResource(R.drawable.nscale);
        }
        else {
            mBtnFullscreen.setImageResource(R.drawable.scale);
        }
    }

    private void doPauseResume() {
        if (mPlayerCtrl == null) {
            return;
        }

        if (mPlayerCtrl.isPlaying()) {
            mPlayerCtrl.pause();
        } else {
            mPlayerCtrl.start();
        }
        updatePausePlay();
    }

    private void doToggleFullscreen() {
        if (mPlayerCtrl == null) {
            return;
        }
        Log.i(LOG_TAG, "doToggleFullscreen");
        mPlayerCtrl.fullScreen();
    }

    private OnSeekBarChangeListener mSeekListener = new OnSeekBarChangeListener() {
        public void onStartTrackingTouch(SeekBar bar) {
            show(3600000);

            mIsDragging = true;
            mHandler.removeMessages(SHOW_PROGRESS);
        }

        public void onProgressChanged(SeekBar bar, int progress, boolean fromuser) {
            if (mPlayerCtrl == null) {
                return;
            }

            if (!fromuser) {
                // We're not interested in programmatically generated changes to
                // the progress bar's position.
                return;
            }

            long duration = mPlayerCtrl.getDuration();
            long newposition = (duration * progress) / 1000L;
            mPlayerCtrl.seekTo( (int) newposition);
            if (mCurTime != null)
                mCurTime.setText(stringForTime( (int) newposition));
        }

        public void onStopTrackingTouch(SeekBar bar) {
            mIsDragging = false;
            setProgress();
            updatePausePlay();
            show(DEFTIMEOUT);

            mHandler.sendEmptyMessage(SHOW_PROGRESS);
        }
    };

    @Override
    public void setEnabled(boolean enabled) {
        if (mBtnPause != null) {
            mBtnPause.setEnabled(enabled);
        }
        if (mBtnFfwd != null) {
            mBtnFfwd.setEnabled(enabled);
        }
        if (mBtnRew != null) {
            mBtnRew.setEnabled(enabled);
        }
        if (mBtnNext != null) {
            mBtnNext.setEnabled(enabled && mNextListener != null);
        }
        if (mBtnPrev != null) {
            mBtnPrev.setEnabled(enabled && mPrevListener != null);
        }
        if (mProgress != null) {
            mProgress.setEnabled(enabled);
        }
        disableUnsupportedButtons();
        super.setEnabled(enabled);
    }

    @SuppressLint("NewApi")
    @Override
    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
        super.onInitializeAccessibilityEvent(event);
        event.setClassName(Controller.class.getName());
    }

    @SuppressLint("NewApi")
    @Override
    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
        super.onInitializeAccessibilityNodeInfo(info);
        info.setClassName(Controller.class.getName());
    }

    private View.OnClickListener mRewListener = new View.OnClickListener() {
        public void onClick(View v) {
            if (mPlayerCtrl == null) {
                return;
            }

            int pos = mPlayerCtrl.getCurPosition();
            pos -= 5000; // milliseconds
            mPlayerCtrl.seekTo(pos);
            setProgress();

            show(DEFTIMEOUT);
        }
    };

    private View.OnClickListener mFfwdListener = new View.OnClickListener() {
        public void onClick(View v) {
            if (mPlayerCtrl == null) {
                return;
            }

            int pos = mPlayerCtrl.getCurPosition();
            pos += 15000; // milliseconds
            mPlayerCtrl.seekTo(pos);
            setProgress();

            show(DEFTIMEOUT);
        }
    };

    private void installPrevNextListeners() {
        if (mBtnNext != null) {
            mBtnNext.setOnClickListener(mNextListener);
            mBtnNext.setEnabled(mNextListener != null);
        }

        if (mBtnPrev != null) {
            mBtnPrev.setOnClickListener(mPrevListener);
            mBtnPrev.setEnabled(mPrevListener != null);
        }
    }

    public void setPrevNextListeners(View.OnClickListener next, View.OnClickListener prev) {
        mNextListener = next;
        mPrevListener = prev;
        mIsListenersSet = true;

        if (mRootView != null) {
            installPrevNextListeners();

            if (mBtnNext != null && !mFromXml) {
                mBtnNext.setVisibility(View.VISIBLE);
            }
            if (mBtnPrev != null && !mFromXml) {
                mBtnPrev.setVisibility(View.VISIBLE);
            }
        }
    }

    public interface ControlOper {
        void    start();
        void    pause();
        int     getDuration();
        int     getCurPosition();
        void    seekTo(int pos);
        boolean isPlaying();
        int     getBufPercent();
        boolean canPause();
        boolean canSeekBackward();
        boolean canSeekForward();
        boolean isFullScreen();
        void    fullScreen();
    }

    private static class MsgHandler extends Handler {

        private final WeakReference<Controller> mView; 

        MsgHandler(Controller view) {
            mView = new WeakReference<Controller>(view);
        }

        @Override
        public void handleMessage(Message msg) {

            Controller view = mView.get();
            if (view == null || view.mPlayerCtrl == null) {
                return;
            }

            int pos;
            switch (msg.what) {

                case FADE_OUT: {
                    view.hide();
                    break;
                }

                case SHOW_PROGRESS: {

                    if(view.mPlayerCtrl.isPlaying()) {
                        pos = view.setProgress();
                    } else {
                        return;
                    }

                    if (!view.mIsDragging && view.mIsShowing
                            && view.mPlayerCtrl.isPlaying()) {

                        msg = obtainMessage(SHOW_PROGRESS);
                        sendMessageDelayed(msg, 1000 - (pos % 1000));
                    }
                    break;
                }
            }
        }
    }
}

package mediaplayer;

import java.io.IOException;

import com.demo.player.R;

import android.app.Activity;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.FrameLayout;
import android.widget.Toast;

public class Player extends Activity {

    MediaPlayer mPlayer;
    SurfaceView mSurfaceView;   
    Controller mController;
    SurfaceHolder.Callback mCallback;
    MediaPlayer.OnPreparedListener mPreparedListener;
    Controller.ControlOper mPlayerControl;
    private long mExitTime = 0;

    @Override 
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_player);

        initListeners();

        mSurfaceView = (SurfaceView) findViewById(R.id.surfaceview);
        SurfaceHolder surfaceHolder = mSurfaceView.getHolder();
        surfaceHolder.addCallback(mCallback);
        mPlayer = new MediaPlayer(); 
        mController = new Controller(this); 

        try { 

            mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);          
            mPlayer.setDataSource(this, Uri.parse("rtsp://184.72.239.149"
                    + "/vod/mp4:BigBuckBunny_115k.mov"));         
            mPlayer.setOnPreparedListener(mPreparedListener);
            mPlayer.prepareAsync();

        } catch (IllegalArgumentException e) { 
            e.printStackTrace(); 
        } catch (SecurityException e) { 
            e.printStackTrace(); 
        } catch (IllegalStateException e) { 
            e.printStackTrace(); 
        } catch (IOException e) { 
            e.printStackTrace(); 
        }
    } 

    private void releaseMediaPlayer() {

        mController.removeHandlerCallback();
        if (mPlayer != null) {
            mPlayer.stop();
            mPlayer.release();
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        super.onTouchEvent(event);
        mController.show(); 
        return false;
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        releaseMediaPlayer();
    }

    @Override
    protected void onPause() {
       super.onPause();
       mPlayer.pause();
    }

    @Override
    public void onBackPressed() {
        if ((System.currentTimeMillis() - mExitTime) > 1500) {
            Toast.makeText(this, "再按一次退出程序", Toast.LENGTH_SHORT).show();
            mExitTime = System.currentTimeMillis();
        } else {
            finish();
        }
        return;
    }

    private void initListeners() {

        mCallback = new SurfaceHolder.Callback() {

            public void surfaceCreated(SurfaceHolder holder) {
                mPlayer.setDisplay(holder);
            }

            public void surfaceChanged(SurfaceHolder holder, int format,
                    int width, int height) {

            }

            public void surfaceDestroyed(SurfaceHolder holder) {

            }           
        };

        mPreparedListener = new MediaPlayer.OnPreparedListener() {

            public void onPrepared(MediaPlayer mp) {

                mController.setMediaPlayer(mPlayerControl);
                mController.setAnchorView((FrameLayout)findViewById(R.id.surfacecontainer));
                mPlayer.start();
            }           
        };

        mPlayerControl = new Controller.ControlOper() {

            public void start() {
                mPlayer.start();
            }

            public void pause() {
                mPlayer.pause();
            }

            public int getDuration() {
                return mPlayer.getDuration();
            }

            public int getCurPosition() {
                return mPlayer.getCurrentPosition();
            }

            public void seekTo(int pos) {
                mPlayer.seekTo(pos);
            }

            public boolean isPlaying() {
                return mPlayer.isPlaying();
            }

            public int getBufPercent() {
                return 0;
            }

            public boolean canPause() {
                return true;
            }

            public boolean canSeekBackward() {
                return true;
            }

            public boolean canSeekForward() {
                return true;
            }

            public boolean isFullScreen() {
                return false;
            }

            public void fullScreen() {

            }           
        };
    }
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:background="#CC000000"
   android:orientation="vertical">

    <LinearLayout
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:gravity="center"
       android:paddingTop="4dip"
       android:orientation="horizontal">

        <ImageButton android:id="@+id/prev"
           style="@android:style/MediaButton.Previous"
           android:contentDescription="@string/description" />

        <ImageButton android:id="@+id/rew"
           style="@android:style/MediaButton.Rew"
           android:contentDescription="@string/description" />

        <ImageButton android:id="@+id/pause"
           style="@android:style/MediaButton.Play"
           android:contentDescription="@string/description" />

        <ImageButton android:id="@+id/ffwd"
           style="@android:style/MediaButton.Ffwd"
           android:contentDescription="@string/description" />

        <ImageButton android:id="@+id/next"
           style="@android:style/MediaButton.Next"
           android:contentDescription="@string/description" />

    </LinearLayout>

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

        <TextView android:id="@+id/time_current"
           android:textSize="14sp"
           android:textStyle="bold"
           android:paddingTop="4dip"
           android:paddingLeft="4dip"
           android:layout_gravity="center_horizontal"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:paddingRight="4dip" />

        <SeekBar
           android:id="@+id/mediacontroller_progress"
           style="?android:attr/progressBarStyleHorizontal"
           android:layout_width="0dip"
           android:layout_weight="1"
           android:layout_height="21dip" />

        <TextView android:id="@+id/time"
           android:textSize="14sp"
           android:textStyle="bold"
           android:paddingTop="4dip"
           android:paddingRight="4dip"
           android:layout_gravity="center_horizontal"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:paddingLeft="4dip" />

        <ImageButton android:id="@+id/fullscreen"
           android:layout_marginTop="-7dp"
           android:paddingTop="4dip"
           android:paddingBottom="4dip"
           android:paddingLeft="10dip"
           android:paddingRight="4dip"
           android:layout_gravity="top"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:background="@android:color/transparent"
           android:contentDescription="@string/description" />

    </LinearLayout>

</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@android:color/black" 
    android:gravity="center_horizontal|center_vertical" 
    android:orientation="vertical" > 
    <FrameLayout 
        android:id="@+id/surfacecontainer" 
        android:layout_width="match_parent" 
        android:layout_height="wrap_content" > 
        <SurfaceView android:id="@+id/surfaceview" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" /> 
        </FrameLayout>
</LinearLayout>