Android vitamo 实现横竖屏的切换和页面内部的网络视频

最近有一个需求，要实现一个播放器，然后可以实现横竖屏的播放，然后可以在页面内部实现网络视频的切换。尝试了几种方式，记录一下：

首先，实现横竖屏的思路，开始实现是通过新建两个布局 ,也就是在layout_land 和layout_port 两个文件夹里建立相应的布局，然后视频切换时候通过传递记录视频信息的对象来实现播放，每次执行都会执行oncreate 方法，然后调用之前的播放状态，通过seekto 跳转到之前的播放位置。这样做基本是可以实现连续播放的，但是需要进行管理的状态有点多，包括视频是否暂停的状态，home键以及back之后需要处理的东西，很琐碎，另外，视频播放进度并不是实时的，seekto方法也并不能跳到指定的位置（总会有一点小偏差），所以这种实现实际是不太现实的。   实现思路二 ，直接使用代码进行横屏 ，通过在manifists文件中的activity 中使用：

<activity    android:name=".Activity.VideoActivity"    android:launchMode="singleTask"    android:configChanges="keyboardHidden|orientation|keyboard|screenSize"    /><activity

然后调用横竖屏的代码，通过对部分布局进行隐藏，实现横竖屏切换：

//设置横屏    private void setFullScreen() {        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);  //这样mVideoView会自己充满全屏        fullScreen.setImageResource(R.mipmap.min_screen);        videoHeadbar.setVisibility(View.GONE);        mListView.setVisibility(View.GONE);        isPortrit = false;    }    //设置竖屏操作    private void setLittle() {        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);        fullScreen.setImageResource(R.mipmap.max_screen);        videoHeadbar.setVisibility(View.VISIBLE);        mListView.setVisibility(View.VISIBLE);        isPortrit = true;    }

通过这种方式，videoview会自动的执行横屏的动作，播放的位置也是对的，这应该是横竖屏最简便的实现的方式了。

    项目还有一个需求，是通过当前activity 进行视频的切换，通过vitamo的videoview我并没有找到合适的办法，切换时候总会卡着，切换url也并没有任何的效果，后来去stackoverflow 上看到有人通过mediaplayer 实现切换 ，所以我也改变了视频的实现的方式，通过vitamo的mediaplayer + surfaceView 的方式实现当前界面的网络视频切换：

切换视频代码：

   //开始播放    private void setplay(String url) {        releaseMediaPlayer();        try {            mProgres.setVisibility(View.VISIBLE);            mMediaPlayer = new MediaPlayer(this);            mMediaPlayer.setDataSource(url);            mMediaPlayer.setDisplay(holder);            mMediaPlayer.prepareAsync();            mMediaPlayer.setOnBufferingUpdateListener(this);            mMediaPlayer.setOnCompletionListener(this);            mMediaPlayer.setOnPreparedListener(this);            mMediaPlayer.setOnVideoSizeChangedListener(this);            setVolumeControlStream(AudioManager.STREAM_MUSIC);        } catch (IOException ex) {        }    }

 
总体思路就这点，全部代码：

布局文件：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#000000"    >    <FrameLayout        android:id="@+id/video_camera"        android:layout_width="1dp"        android:layout_height="1dp"        ></FrameLayout>    <RelativeLayout        android:id="@+id/vid_container"        android:layout_width="match_parent"        android:layout_height="300dp"        android:layout_below="@+id/video_head"        >        <io.vov.vitamio.widget.CenterLayout            android:layout_width="match_parent"            android:layout_height="match_parent"            android:orientation="vertical">            <SurfaceView                android:id="@+id/video_surface"                android:layout_width="match_parent"                android:layout_height="match_parent"                android:layout_gravity="center"                >            </SurfaceView>        </io.vov.vitamio.widget.CenterLayout>        <ImageView            android:id="@+id/video_coverImage"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:background="@color/dark"            android:scaleType="fitXY"            />        <RelativeLayout            android:id="@+id/vid_control"            android:layout_width="match_parent"            android:layout_height="match_parent"            >            <ImageView                android:id="@+id/vid_mid_image"                android:layout_width="55dp"                android:layout_height="55dp"                android:layout_centerInParent="true"                android:src="@mipmap/vido_pause"                />            <ProgressBar                android:id="@+id/vid_progress"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_centerInParent="true"                android:visibility="gone"                />            <RelativeLayout                android:layout_width="match_parent"                android:layout_height="100dp"                android:layout_alignParentBottom="true"                >                <SeekBar                    android:id="@+id/progressBar"                    android:layout_width="match_parent"                    android:layout_height="wrap_content"                    android:layout_marginEnd="5dp"                    android:layout_marginStart="5dp"                    android:foregroundGravity="center"                    android:minHeight="25dp"                    android:visibility="visible"                    />                <RelativeLayout                    android:id="@+id/vid_text"                    android:layout_width="match_parent"                    android:layout_height="20dp"                    android:layout_below="@id/progressBar"                    >                    <TextView                        android:id="@+id/play_time"                        android:layout_width="wrap_content"                        android:layout_height="wrap_content"                        android:layout_centerVertical="true"                        android:layout_marginStart="10dp"                        android:text="00:00"                        android:textColor="#ffffff"                        android:textSize="12sp"                        />                    <TextView                        android:id="@+id/alltime"                        android:layout_width="wrap_content"                        android:layout_height="wrap_content"                        android:layout_alignParentEnd="true"                        android:layout_centerVertical="true"                        android:layout_marginEnd="10dp"                        android:text="00:00"                        android:textColor="#ffffff"                        android:textSize="12sp"                        />                </RelativeLayout>                <LinearLayout                    android:layout_width="match_parent"                    android:layout_height="55dp"                    android:layout_alignParentBottom="true"                    android:orientation="horizontal"                    >                    <RelativeLayout                        android:layout_width="0dp"                        android:layout_height="match_parent"                        android:layout_weight="1"                        >                        <ImageView                            android:layout_width="wrap_content"                            android:layout_height="wrap_content"                            android:layout_alignParentEnd="true"                            android:layout_centerVertical="true"                            android:scaleType="fitXY"                            android:src="@mipmap/next"                            />                    </RelativeLayout>                    <RelativeLayout                        android:layout_width="0dp"                        android:layout_height="match_parent"                        android:layout_weight="1"                        >                        <ImageView                            android:id="@+id/vid_begin"                            android:layout_width="wrap_content"                            android:layout_height="wrap_content"                            android:layout_centerInParent="true"                            android:scaleType="fitXY"                            android:src="@mipmap/play"                            />                    </RelativeLayout>                    <RelativeLayout                        android:layout_width="0dp"                        android:layout_height="match_parent"                        android:layout_weight="1"                        >                        <ImageView                            android:layout_width="wrap_content"                            android:layout_height="wrap_content"                            android:layout_alignParentStart="true"                            android:layout_centerVertical="true"                            android:scaleType="fitXY"                            android:src="@mipmap/next"                            />                        <ImageView                            android:id="@+id/vid_bigscreen"                            android:layout_width="30dp"                            android:layout_height="30dp"                            android:layout_alignParentEnd="true"                            android:layout_centerVertical="true"                            android:layout_marginEnd="10dp"                            android:scaleType="fitXY"                            android:src="@mipmap/max_screen"                            />                    </RelativeLayout>                </LinearLayout>            </RelativeLayout>        </RelativeLayout>    </RelativeLayout>    <RelativeLayout        android:id="@+id/video_head"        android:layout_width="match_parent"        android:layout_height="46dp"        android:layout_alignParentTop="true"        android:background="@color/darkgray"        >        <ImageButton            android:id="@+id/headbar_back"            style="@style/Widget.AppCompat.Button.Borderless"            android:layout_width="40dp"            android:layout_height="match_parent"            android:src="@mipmap/titlebar_back"            />        <TextView            android:id="@+id/headbar_title"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerInParent="true"            android:text="理论学习"            android:textColor="@color/white"            />    </RelativeLayout>    <ListView        android:id="@+id/video_lv"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_below="@id/vid_container"        android:divider="#00000000"        android:dividerHeight="1dp"        >    </ListView></RelativeLayout>

主要的视频部分代码，包含了实现了一个定时进行无预览拍照的部分代码：

package com.post.posttime.Activity;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.DialogInterface;import android.content.Intent;import android.content.pm.ActivityInfo;import android.content.res.Configuration;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Matrix;import android.graphics.PixelFormat;import android.hardware.Camera;import android.media.AudioManager;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.AdapterView;import android.widget.FrameLayout;import android.widget.ImageView;import android.widget.ListView;import android.widget.ProgressBar;import android.widget.RelativeLayout;import android.widget.SeekBar;import android.widget.TextView;import com.google.gson.Gson;import com.post.posttime.Adapters.VideoPageListAdapter;import com.post.posttime.BaseClass.BaseActivity;import com.post.posttime.BaseClass.BaseData;import com.post.posttime.Bean.Net.TheoVideoExaminBean;import com.post.posttime.Bean.Net.VideoListBean;import com.post.posttime.R;import com.post.posttime.Utils.GetIPlocation;import com.post.posttime.Utils.ImagePostUtils;import com.post.posttime.Utils.NetUtils;import com.post.posttime.Utils.SystemUtil;import com.post.posttime.View.CameraPreview;import org.xutils.common.Callback;import org.xutils.ex.HttpException;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import java.util.Map;import io.vov.vitamio.MediaPlayer;import io.vov.vitamio.Vitamio;import io.vov.vitamio.utils.StringUtils;//显示视频的activitypublic class VideoActivity extends BaseActivity implements SurfaceHolder.Callback,        MediaPlayer.OnCompletionListener, MediaPlayer.OnBufferingUpdateListener,        MediaPlayer.OnPreparedListener, MediaPlayer.OnSeekCompleteListener, MediaPlayer.OnVideoSizeChangedListener {    //视频控件    SurfaceView surface;    private SurfaceHolder holder;    MediaPlayer mMediaPlayer;    SeekBar mProgressBar;   //进度条    TextView playTime;     //播放时间    TextView alltime;      //所有时间    UpDateSeekBar update;  // 更新seekbar 的线程    ImageView begin;         //开始按钮    ImageView fullScreen;     //全屏按钮    boolean isPortrit = true;  //是否竖屏    RelativeLayout containder;    ImageView midView;           //中间大的播放按钮    boolean isPlay = false;     //是否播放    RelativeLayout controler;   //包括了播放控制的布局    long lastPosition = 0;  //视频播放位置    String TAG = "videoactivity";    boolean isFinish = false;      // 是否播放完成    ListView mListView;  //展示所有章节    //播放数据    VideoListBean videodata;    //传过来的播放的内容    int thispostion;            //listview的点击位置  最好的方式是通过视频点击之后获取的videoid 获取到播放位置的 现在是根据位置，需要修改一下    VideoPageListAdapter adapter;    RelativeLayout videoHeadbar; //顶部的bar 显示标题    ImageView coverImg;    //相机    private Camera mCamera;    private CameraPreview mCameraPreview;    FrameLayout container;    SystemUtil su;    boolean isBegin = true;    TheoVideoExaminBean recordData;    int lesson_id;    int learnRecordId;    //学时id    int currentPositon = 0;  //记录拍照时候的视频播放位置    int lastClickPositon;  //点击listivew之前记录的position    ProgressBar mProgres;    AlertDialog.Builder errorDialog;    AlertDialog.Builder creatRcordDialog;    ProgressDialog mDialog;    @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_video);        Vitamio.isInitialized(this);        initData();        init();        initMedia();    }    private void init() {        su = new SystemUtil(this);        errorDialog = new AlertDialog.Builder(this);        creatRcordDialog = new AlertDialog.Builder(this);        playTime = (TextView) findViewById(R.id.play_time);        alltime = (TextView) findViewById(R.id.alltime);        midView = (ImageView) findViewById(R.id.vid_mid_image);        update = new UpDateSeekBar();        container = (FrameLayout) findViewById(R.id.video_camera);        begin = (ImageView) findViewById(R.id.vid_begin);        mProgressBar = (SeekBar) findViewById(R.id.progressBar);        fullScreen = (ImageView) findViewById(R.id.vid_bigscreen);        containder = (RelativeLayout) findViewById(R.id.vid_container);        controler = (RelativeLayout) findViewById(R.id.vid_control);        videoHeadbar = (RelativeLayout) findViewById(R.id.video_head);        mProgres = (ProgressBar) findViewById(R.id.vid_progress);        coverImg = (ImageView) findViewById(R.id.video_coverImage);        containder.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                controler.setVisibility(View.VISIBLE);                showControl();            }        });        fullScreen.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if (isPortrit) {                    setFullScreen();                } else {                    setLittle();                }            }        });        findViewById(R.id.headbar_back).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                onBackPressed();            }        });        begin.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                beginToPause();            }        });        midView.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                beginToPause();            }        });        errorDialog.setTitle("验证失败").setMessage("是否重新验证").setPositiveButton("继续验证", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                startExamImage();            }        }).setNegativeButton("放弃验证", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                thispostion = lastClickPositon;            }        });        creatRcordDialog.setTitle("尚未创建学时").setMessage("是否创建学时").setPositiveButton("创建", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                startExamImage();            }        }).setNegativeButton("不创建", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                thispostion = lastClickPositon;            }        });    }    //初始化播放器    private void initMedia() {        surface = (SurfaceView) findViewById(R.id.video_surface);        holder = surface.getHolder();        holder.addCallback(this);        holder.setFormat(PixelFormat.RGBA_8888);        holder.setSizeFromLayout();    }    //访问人脸识别界面 重新获取学时    private void startExamImage() {        Intent intent = new Intent(this, CameraActivity.class);        startActivityForResult(intent, 14);    }    //开始播放    private void setplay(String url) {        releaseMediaPlayer();        try {            mProgres.setVisibility(View.VISIBLE);            mMediaPlayer = new MediaPlayer(this);            mMediaPlayer.setDataSource(url);            mMediaPlayer.setDisplay(holder);            mMediaPlayer.prepareAsync();            mMediaPlayer.setOnBufferingUpdateListener(this);            mMediaPlayer.setOnCompletionListener(this);            mMediaPlayer.setOnPreparedListener(this);            mMediaPlayer.setOnVideoSizeChangedListener(this);            setVolumeControlStream(AudioManager.STREAM_MUSIC);        } catch (IOException ex) {        }    }    //释放视频播放器    private void releaseMediaPlayer() {        if (mMediaPlayer != null) {            if (mMediaPlayer.isPlaying())                mMediaPlayer.stop();            mMediaPlayer.release();            mMediaPlayer = null;        }    }    //横竖屏时候调用    @Override    public void onConfigurationChanged(Configuration newConfig) {        super.onConfigurationChanged(newConfig);    }    //设置定时器 完成progressbar 的前进    Handler mHandler = new Handler() {        public void handleMessage(Message msg) {            int s = msg.what;            if (s == 1) {                if (mMediaPlayer == null) {                    return;                }                playTime.setText(StringUtils.generateTime(mMediaPlayer                        .getCurrentPosition() == 547442232540l ? 0 : mMediaPlayer                        .getCurrentPosition()));                if (mMediaPlayer != null) {                    seekBar(mMediaPlayer.getCurrentPosition());                }            } else if (s == 2) {                controler.setVisibility(View.INVISIBLE);            } else if (s == 3) {                if (mMediaPlayer != null) {//定时调用相机拍照的程序  

                    if (mMediaPlayer.isPlaying() && learnRecordId != -1 && videodata.getData().get(thispostion).getStatus() == 0) {                        currentPositon = (int) (mMediaPlayer.getCurrentPosition() / 1000);                        recordData.getData().getOption().get(thispostion).setLastplay(currentPositon);                        takePic();                    } else {//                        currentPositon=recordData.getData().getOption().get(thispostion).getLastplay();                    }                }            }        }    };    //拍照方法    private void takePic() {        try {            if (mCamera != null) {                mCamera.startPreview();                mCamera.takePicture(null, null, mPicture);            }        } catch (Exception e) {            e.printStackTrace();        }    }    //定时调取摄像头拍照    Runnable cameraThread = new Runnable() {        @Override        public void run() {            mHandler.sendEmptyMessage(3);            mHandler.postDelayed(cameraThread, BaseData.EXAMIMAGETIME);        }    };    //照片返回    private Camera.PictureCallback mPicture = new Camera.PictureCallback() {        @Override        public void onPictureTaken(byte[] data, Camera camera) {            Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);            Matrix matrix = new Matrix();            matrix.preRotate(270);            bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);            String base64 = ImagePostUtils.bitmapToBase64(bitmap);                 }    };    //获取播放所有的videolist和位置    private void initData() {        videodata = (VideoListBean) getIntent().getSerializableExtra("video");        thispostion = getIntent().getIntExtra("postion", 0);        lastClickPositon = thispostion;        recordData = (TheoVideoExaminBean) getIntent().getSerializableExtra("learnrecord");        lesson_id = getIntent().getIntExtra("lesson_id", 0);        mListView = (ListView) findViewById(R.id.video_lv);        adapter = new VideoPageListAdapter(videodata.getData(), this);        mListView.setAdapter(adapter);        adapter.setPostion(thispostion);        mListView.smoothScrollToPosition(thispostion);        mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                //切换视频                lastClickPositon = thispostion;                thispostion = position;   //点击位置变化 如果成功设置位置，失败的话不改变listviw展示的变化                if (mMediaPlayer != null) {                    mMediaPlayer.pause();                }                setStop();                if (learnRecordId != -1) {                    //已经创建了学时                    adapter.setPostion(position);                    lastPosition = recordData.getData().getOption().get(position).getLastplay() * 1000;                    setplay(videodata.getData().get(thispostion).getUrl());                    lastClickPositon = thispostion;                    isFinish = false;                } else if (videodata.getData().get(position).getStatus() == 1) {                    //视频已经完成 重头播放                    adapter.setPostion(position);                    lastPosition = 0;                    lastClickPositon = thispostion;                    setplay(videodata.getData().get(thispostion).getUrl());//                    new Thread(update).start();                    isFinish = false;                } else {                    //没有完成，也没有获取过学时 需要拍照获取学时  重新获取到option 然后设置url 和位置 然后再播放  设置listview点击位置                    creatRcordDialog.create().show();                }            }        });    }         //获取到播放位置的图片，然后设置成背景图 非常耗时。。。//    private void initImage() {//        try {//            MediaMetadataRetriever mmr = new MediaMetadataRetriever(this);//            mmr.setDataSource(this, Uri.parse(videodata.getData().get(thispostion).getUrl()));//            Bitmap bitmap;//            bitmap = mmr.getFrameAtTime(1);//            firstImg.setImageBitmap(bitmap);//            firstImg.setVisibility(View.VISIBLE);//            mmr.release();//        } catch (Exception e) {////        }////    }    //定时获取播放进度    class UpDateSeekBar implements Runnable {        @Override        public void run() {            if (!isFinish) {                Message msg = mHandler.obtainMessage();                msg.what = 1;                mHandler.sendMessage(msg);                mHandler.postDelayed(update, 1000);            }        }    }    //过一段时间隐藏操作栏    private void showControl() {        if (isPlay) {            Message msg = mHandler.obtainMessage();            msg.what = 2;            mHandler.sendMessageDelayed(msg, 5000);        }    }    //点击事件    private void beginToPause() {        if (isBegin) {            setplay(videodata.getData().get(thispostion).getUrl());        } else {            if (isFinish) {                isFinish = false;                mMediaPlayer.seekTo(0);                mMediaPlayer.start();//                new Thread(update).start();                setStart();            } else {                if (isPlay) {                    mMediaPlayer.pause();                    setStop();                } else {                    mMediaPlayer.start();                    setStart();                }            }        }    }    //运行时设置图片    private void setStart() {        begin.setImageResource(R.mipmap.pause);        midView.setImageResource(R.mipmap.video_pause_bg);        isPlay = true;        showControl();    }    //设置暂停时图片    private void setStop() {        begin.setImageResource(R.mipmap.play);        midView.setImageResource(R.mipmap.video_player_bg);        isPlay = false;        controler.setVisibility(View.VISIBLE);    }    //开始时候开启摄像头    private void beginCamera() {        mCamera = CameraActivity.getCameraInstance(1);        if (mCamera != null) {            mCameraPreview = new CameraPreview(this, mCamera);            container.removeAllViews();            container.addView(mCameraPreview);            mHandler.postDelayed(cameraThread, 5000);        } else {            toast("摄像头权限被禁止，将无法记录学时");        }    }    //设置seekbar 位置    private void seekBar(long size) {        if (mMediaPlayer.isPlaying()) {            long mMax = mMediaPlayer.getDuration();            int sMax = mProgressBar.getMax();            mProgressBar.setProgress((int) (size * sMax / mMax));        }    }    //视频播放完毕 拍照上传  停止视频 改变当前的是否看完的信息    @Override    public void onCompletion(MediaPlayer mp) {        currentPositon = (int) (mMediaPlayer.getDuration() / 1000);        takePic();        isFinish = true;        mMediaPlayer.pause();        setStop();        videodata.getData().get(thispostion).setStatus(1);        toast("当前视频播放完成");    }    @Override    public void onBufferingUpdate(MediaPlayer mp, int percent) {    }    @Override    protected void onPause() {        super.onPause();        mHandler.removeCallbacks(cameraThread);        releaseCamera();        if (mMediaPlayer != null) {            mMediaPlayer.pause();        }        setStop();        //默认退出界面后 包括home键之后结束计时 否则系统杀死后无法计时//        finish();    }    @Override    protected void onResume() {        super.onResume();        //开始运行时开启摄像头        beginCamera();    }    @Override    protected void onDestroy() {        super.onDestroy();        if (mMediaPlayer != null) {            releaseMediaPlayer();        }        if (mCamera != null) {            releaseCamera();        }        isFinish = true;        isPlay = false;        mHandler.removeCallbacks(update);        mHandler.removeCallbacks(cameraThread);    }    //视频准备阶段  执行onstart 方法之后每次都执行这个    @Override    public void onPrepared(MediaPlayer mp) {        mProgres.setVisibility(View.GONE);        controler.setVisibility(View.VISIBLE);        new Thread(update).start();        alltime.setText(StringUtils.generateTime(mMediaPlayer.getDuration()));        isBegin = false;        setStart();        mp.start();        coverImg.setVisibility(View.GONE);    }    @Override    public void onSeekComplete(MediaPlayer mp) {        loge("seekto complete");    }    //设置横屏    private void setFullScreen() {        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);  //这样mVideoView会自己充满全屏        fullScreen.setImageResource(R.mipmap.min_screen);        videoHeadbar.setVisibility(View.GONE);        mListView.setVisibility(View.GONE);        isPortrit = false;    }    //设置竖屏操作    private void setLittle() {        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);        fullScreen.setImageResource(R.mipmap.max_screen);        videoHeadbar.setVisibility(View.VISIBLE);        mListView.setVisibility(View.VISIBLE);        isPortrit = true;    }    @Override    public void onBackPressed() {        if (!isPortrit) {            setLittle();        } else super.onBackPressed();    }    //释放摄像头    private void releaseCamera() {        if (mCamera != null) {            mCamera.release();            mCamera = null;        }    }    //格式化时间    private String getFormatTime(long time) {        Date date = new Date(time);        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");        return format.format(date);    }    //surface 的变化的listener    @Override    public void surfaceCreated(SurfaceHolder holder) {    }    @Override    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {    }    @Override    public void surfaceDestroyed(SurfaceHolder holder) {    }    //开始的位置跳转通过这个方法调用    @Override    public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {        if (width == 0 || height == 0) {            return;        }        mp.seekTo(lastPosition);    }}

有几个地方是不太满意的，首先在开始时候跳转是通过seekto方法，但是视频准备好之前是不起作用的，先调用Mediaplayer.start 方法之后（而且是需要过一点时间）才能调用seekto，所以这里我在onsurfacechange的方法调用了seekto,然后在onprepared之中直接调用了start这样，其他地方调用mMediaPlayer.prepareAsync() 之后直接就会开始视频，控制上感觉有点不足。

另外surfaceview 开始加载会有穿透的效果，也就是会直接看到之前的一个activity ，这里开始我是通过获取第一帧图片来遮挡实现，但是这个方法执行会减慢进入界面的速度，估计是阻塞了UI线程，所以我是通过直接加载了一个黑色背景实现的，这里总感觉不够好，以后可以尝试更漂亮方法实现。就记录到这里