VideoView 视频播放 示例

实现的功能：
可播放本地视频或网络视频，可控制播放或暂停

最小化时保存播放位置及播放状态，resume时恢复所有状态；

横竖屏切换时保持切换前的位置及状态

在屏幕上竖直滑动可调节屏幕亮度和音量

可改变视频显示样式（有bug）
可获取视频缩略图及视频大小

import android.app.Activity;import android.content.pm.ActivityInfo;import android.content.res.Configuration;import android.media.MediaPlayer;import android.media.MediaPlayer.OnCompletionListener;import android.media.MediaPlayer.OnErrorListener;import android.media.MediaPlayer.OnPreparedListener;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.util.Log;import android.view.GestureDetector;import android.view.GestureDetector.OnGestureListener;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnTouchListener;import android.widget.Button;import android.widget.MediaController;import android.widget.ProgressBar;import android.widget.RelativeLayout;import android.widget.Toast;import android.widget.VideoView;public class MainActivity extends Activity implements OnCompletionListener, OnErrorListener, OnPreparedListener, OnTouchListener, OnClickListener,        OnGestureListener {    private Button btn_switch;    private Button btn_start;    private Button btn_fullscreen;    private VideoView mVideoView;    //在 VidioView 外层套一个容器，以在切换屏幕方向的时候对 rl_vv 进行拉伸，而内部的 mVideoView 会依据视频尺寸重新计算宽高。    //若是直接具体指定了view的宽高，则视频会被拉伸。    private RelativeLayout rl_vv;    private ProgressBar progressBar; //加载进度条    private int positionWhenPause = 0;//标记当视频暂停时的播放位置    private boolean isPlayingWhenPause = false;//标记最小化或横竖屏时是否正在播放    private GestureDetector mGestureDetector;//手势识别器，用户控制屏幕亮度和音量    private Uri mVideoUri;    public static final String filePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/b.rmvb";//本地路径    public static final String url = "http://7xt0mj.com1.z0.glb.clouddn.com/lianaidaren.v.640.480.mp4";//网络路径    public static final String url2 = "http://7xt0mj.com1.z0.glb.clouddn.com/xia.v.1280.720.f4v";    public static final String url3 = "http://112.253.22.157/17/z/z/y/u/zzyuasjwufnqerzvyxgkuigrkcatxr/hc.yinyuetai.com   /D046015255134077DDB3ACA0D7E68D45.flv";    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        progressBar = (ProgressBar) findViewById(R.id.progressBar);        rl_vv = (RelativeLayout) findViewById(R.id.rl_vv);        mVideoView = (VideoView) findViewById(R.id.mVideoView);        btn_switch = (Button) findViewById(R.id.btn_switch);        btn_start = (Button) findViewById(R.id.btn_start);        btn_fullscreen = (Button) findViewById(R.id.btn_fullscreen);        //设置显示控制条        mVideoView.setMediaController(new MediaController(this));        mVideoUri = Uri.parse(filePath);        mVideoView.setVideoURI(mVideoUri);//mVideoView.setVideoPath(url);//这两个方法都可以用来播放网络视频或本地视频        btn_switch.setOnClickListener(this);        btn_start.setOnClickListener(this);        btn_fullscreen.setOnClickListener(this);        mVideoView.setOnCompletionListener(this);        mVideoView.setOnErrorListener(this);        mVideoView.setOnPreparedListener(this);        mVideoView.setOnTouchListener(this);        mVideoView.setOnClickListener(this);        mGestureDetector = new GestureDetector(this, this);    }    @Override    protected void onResume() {        super.onResume();        //如果有保存位置，则跳转到暂停时所保存的那个位置        if (positionWhenPause > 0) {            mVideoView.seekTo(positionWhenPause);            //如果暂停前正在播放，则继续播放，并将播放位置置为0            if (isPlayingWhenPause) {                mVideoView.start();                mVideoView.requestFocus();                positionWhenPause = 0;            }        }    }    @Override    protected void onPause() {        //如果当前页面暂定，则保存当前播放位置，并记录之前mVideoView是否正在播放        isPlayingWhenPause = mVideoView.isPlaying();        positionWhenPause = mVideoView.getCurrentPosition();        //停止回放视频文件，先获取再stopPlayback()        mVideoView.stopPlayback();        super.onPause();    }    @Override    protected void onDestroy() {        super.onDestroy();        if (null != mVideoView) mVideoView = null;    }    @Override    //横竖屏切换时更改mVideoView的大小    public void onConfigurationChanged(Configuration newConfig) {        super.onConfigurationChanged(newConfig);        if (mVideoView == null) {            return;        }        if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {//横屏            VideoUtils.setActivityFullScreenMode(this);//设置为全屏模式            getWindow().getDecorView().invalidate();            //rl_vv.getLayoutParams().width = VideoUtils.getScreenWidth(this);            rl_vv.getLayoutParams().height = VideoUtils.getScreenHeight(this);        } else {//竖屏            VideoUtils.setActivityWindowScreenMode(this);            rl_vv.getLayoutParams().width = VideoUtils.getScreenWidth(this);            //rl_vv.getLayoutParams().height = VideoUtils.dp2px(this, 400);        }    }    //***************************************************************************************************************************    @Override    public void onPrepared(MediaPlayer mp) {        try {            long timeLong = Long.valueOf(VideoUtils.getVideoLength(mVideoUri.toString()));            Toast.makeText(this, "准备好了，时长为 " + VideoUtils.long2Time(timeLong), Toast.LENGTH_SHORT).show();        } catch (Exception e) {        }        //如果文件加载成功,隐藏加载进度条        progressBar.setVisibility(View.GONE);    }    @Override    public void onCompletion(MediaPlayer mp) {    }    @Override    //视频播放发生错误时回调。如果未指定回调， 或回调函数返回false，mVideoView 会通知用户发生了错误。    public boolean onError(MediaPlayer mp, int what, int extra) {        switch (what) {        case MediaPlayer.MEDIA_ERROR_UNKNOWN:            Log.e("text", "发生未知错误");            break;        case MediaPlayer.MEDIA_ERROR_SERVER_DIED:            Log.e("text", "媒体服务器死机");            break;        default:            Log.e("text", "onError+" + what);            break;        }        switch (extra) {        case MediaPlayer.MEDIA_ERROR_IO:            Log.e("text", "文件或网络相关的IO操作错误");            break;        case MediaPlayer.MEDIA_ERROR_MALFORMED:            Log.e("text", "比特流编码标准或文件不符合相关规范");            break;        case MediaPlayer.MEDIA_ERROR_TIMED_OUT:            Log.e("text", "操作超时");            break;        case MediaPlayer.MEDIA_ERROR_UNSUPPORTED:            Log.e("text", "比特流编码标准或文件符合相关规范,但媒体框架不支持该功能");            break;        default:            Log.e("text", "onError+" + extra);            break;        }        return true;//经常会碰到视频编码格式不支持的情况，若不想弹出提示框就返回true    }    //************************************************************************************************************************************    @Override    public boolean onTouch(View v, MotionEvent event) {        return mGestureDetector.onTouchEvent(event);//把Touch事件传递给手势识别器，这一步非常重要！    }    @Override    public void onClick(View v) {        switch (v.getId()) {        case R.id.btn_start:            if (mVideoView.isPlaying()) {                mVideoView.pause();            } else {                mVideoView.start();//启动视频播放                mVideoView.requestFocus();//获取焦点            }            break;        case R.id.btn_switch:            //横竖屏切换            if (getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) {                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);            } else {                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);            }            //            btn_switch.setVisibility(View.INVISIBLE);            break;        case R.id.btn_fullscreen:            VideoUtils.setVideoViewLayoutParams(this, mVideoView, VideoUtils.FULL_SCREEN);            break;        }    }    //************************************************************************************************************************************    @Override    //e1代表触摸时的事件，是不变的，e2代表滑动过程中的事件，是时刻变化的    //distance是当前event2与上次回调时的event2之间的距离，代表上次回调之后到这次回调之前移动的距离    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {        float FLING_MIN_BRIGHTNESS = 1.0f * VideoUtils.dp2px(MainActivity.this, 1f);//调节亮度时的敏感度，        float FLING_MIN_VOICE = 1.0f * VideoUtils.dp2px(MainActivity.this, 5f);//调节声音时的敏感度        float distance = Math.abs(distanceY);//竖直方向移动范围        //在屏幕左侧滑动调节亮度，在屏幕右侧滑动调节声音        if (e1.getX() < VideoUtils.getScreenWidth(this) / 2) {//左侧            if (distance > FLING_MIN_BRIGHTNESS) {//移动范围满足                if (e1.getY() - e2.getY() > 0) {//上滑                    VideoUtils.setScreenBrightness(this, 15);//亮度增加，第二参数的大小代表着敏感度                } else {//下滑                    VideoUtils.setScreenBrightness(this, -15);                }            }        } else {//右侧            if (distance > FLING_MIN_VOICE) {//移动范围满足                if (e1.getY() - e2.getY() > 0) {//上滑                    //VideoUtils.setVoiceVolume(this, 1);//音量增加                    VideoUtils.setVoiceVolumeAndShowNotification(this, true);//系统自动控制音量增加减小级别                } else {//下滑                    //    VideoUtils.setVoiceVolume(this, -1);                    VideoUtils.setVoiceVolumeAndShowNotification(this, false);                }            }        }        return true;    }    @Override    public boolean onDown(MotionEvent e) {        return true;    }    @Override    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {        return true;    }    @Override    public void onLongPress(MotionEvent e) {    }    @Override    public void onShowPress(MotionEvent e) {    }    @Override    public boolean onSingleTapUp(MotionEvent e) {        return false;    }}

import java.lang.reflect.Method;import java.text.SimpleDateFormat;import java.util.Date;import android.app.Activity;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.PixelFormat;import android.graphics.drawable.Drawable;import android.media.AudioManager;import android.media.MediaMetadataRetriever;import android.media.ThumbnailUtils;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.os.Build;import android.provider.MediaStore.Video;import android.provider.Settings;import android.provider.Settings.SettingNotFoundException;import android.util.Log;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.RelativeLayout;import android.widget.RelativeLayout.LayoutParams;import android.widget.VideoView;public class VideoUtils {    /**      * 根据手机的分辨率从 dp或 sp 的单位 转成为 px     */    public static int dp2px(Context context, float dpValue) {        float scale = context.getResources().getDisplayMetrics().density;        return (int) (dpValue * scale + 0.5f);    }    /**     * 根据手机的分辨率从 px 的单位转成为 dp 或 sp    */    public static int px2dp(Context context, float pxValue) {        float scale = context.getResources().getDisplayMetrics().density;        return (int) (pxValue / scale + 0.5f);    }    /**    * 获取屏幕高度    */    public static int getScreenHeight(Context context) {        return context.getResources().getDisplayMetrics().heightPixels;    }    /**     * 获取屏幕宽度     */    public static int getScreenWidth(Context context) {        return context.getResources().getDisplayMetrics().widthPixels;    }    /**     * 设置Activity为全屏模式     */    public static void setActivityFullScreenMode(Activity context) {        context.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);    }    /**     * 设置Activity为窗口模式???     */    public static void setActivityWindowScreenMode(Activity context) {        WindowManager.LayoutParams attrs = context.getWindow().getAttributes();        attrs.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN);        context.getWindow().setAttributes(attrs);        context.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);    }    //********************************************************************************************************************    public static final int FULL_SCREEN = 1;//全屏拉伸模式    public static final int SCREEN_WINDOW = 2;//指定大小模式    public static final int SCREEN_WINDOW_ADAPT = 3;//自适应宽高模式    /**     * 设置VideoView的全屏和窗口模式。<br>     * 全屏拉伸模式 : {@link #FULL_SCREEN} <br>     * 指定大小模式: {@link #SCREEN_WINDOWE}<br>     * 自适应宽高模式 : {@link #SCREEN_WINDOW_ADAPT}     * 这里有很多bug******************************************************************************************************************************************************     */    public static void setVideoViewLayoutParams(Activity context, VideoView mVideoView, int paramsType) {        int width, height;        switch (paramsType) {        case FULL_SCREEN:            setActivityFullScreenMode(context);            RelativeLayout.LayoutParams layoutParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);            layoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);            ((View) mVideoView.getParent()).setLayoutParams(layoutParams);//布局里我们给VideoView设置了一个父布局            mVideoView.setLayoutParams(layoutParams);            break;        case SCREEN_WINDOW:            width = getScreenWidth(context) * 2 / 3;            height = VideoUtils.getScreenHeight(context) * 2 / 3;            RelativeLayout.LayoutParams LayoutParams = new LayoutParams(width, height);            LayoutParams.addRule(RelativeLayout.CENTER_IN_PARENT);            mVideoView.setLayoutParams(LayoutParams);            break;        default://先获取VideoView中资源的大小，然后分别和VideoView控件的大小作对比，当资源宽高大于控件时，缩小，否则放大。            //和加载图片一个样，但是VideoView没有scaleType塑性            int videoWidth = mVideoView.getWidth();            int videoHeight = mVideoView.getHeight();            break;        }    }    //********************************************************************************************************************    /**     * 获取屏幕亮度模式，返回-1代表没有获取到     * 自动调节：Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC=1     * 手动调节：SCREEN_BRIGHTNESS_MODE_MANUAL=0     */    public static int getScreenBrightnessMode(Context context) {        int screenMode = -1;        try {            screenMode = Settings.System.getInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE);        } catch (SettingNotFoundException e) {            e.printStackTrace();        }        return screenMode;    }    /**     * 设置屏幕亮度模式     * 自动调节：Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC=1     * 手动调节：SCREEN_BRIGHTNESS_MODE_MANUAL=0     */    public static void setScreenBrightnessMode(Context context, int value) {        Settings.System.putInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, value);    }    /**     * 获取屏幕亮度，获取失败返回-1     */    public static int getScreenBrightness(Context context) {        int bright = -1;        try {            bright = Settings.System.getInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS);        } catch (SettingNotFoundException e) {            e.printStackTrace();        }        return bright;    }    /**     * 增加或减小当前屏幕亮度，并在整个系统上生效    */    public static void setScreenBrightness(Activity context, float value) {        //设置当前【activity】的屏幕亮度        Window mWindow = context.getWindow();        WindowManager.LayoutParams mParams = mWindow.getAttributes();//注意：它的值是从0到1，亮度从暗到全亮        mParams.screenBrightness += value / 255.0F;        if (mParams.screenBrightness > 1) {//设置大于1的值后，虽然获取到的此参数的值被改了，但系统并不使用此值而是使用某一指定值设置亮度            mParams.screenBrightness = 1;        } else if (mParams.screenBrightness < 0.01) {            mParams.screenBrightness = 0.01f;        }        mWindow.setAttributes(mParams);        // 保存设置为【系统】屏幕亮度值。注意它的值是0-255        int newValue = (int) (mParams.screenBrightness * 255.0F + value);// 或者= (int) (getScreenBrightness(context) + value);        if (newValue > 255) newValue = 255;        else if (newValue < 0) newValue = 0;        Log.i("bqt", "亮度=" + mParams.screenBrightness + "，亮度=" + newValue);        Settings.System.putInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS, newValue);    }    //********************************************************************************************************************    /**     * 设置铃声模式     * @param mode 声音模式：AudioManager.RINGER_MODE_NORMAL；静音模式：_SILENT；震动模式：_VIBRATE     */    public static void setRingerMode(Context context, int mode) {        AudioManager mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);        mAudioManager.setRingerMode(mode);    }    /**     * 增加或减小媒体音量     */    public static void setVoiceVolume(Context context, int value) {        AudioManager mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);        // 注意：分为静音(0)，震动(0)，1--7 共九个等级。从静音调为1时，需要调大两个等级；从1调为0时，手机将调整为“震动模式”        int currentVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC);        //尼玛，我获得的最大值是15        int maxVolume = mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);        int newVolume = currentVolume + value;        if (newVolume > maxVolume) {            newVolume = maxVolume;        } else if (newVolume < 0) {            newVolume = 0;        }        Log.i("bqt", "音量=" + newVolume);        mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, newVolume, 0);    }    /**     * 增加或减小媒体音量，并且显示系统音量控制提示条     */    public static void setVoiceVolumeAndShowNotification(Context context, boolean isAddVolume) {        AudioManager mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);        if (isAddVolume) {            //参数：声音类型，调整音量的方向（只能是增加、减小、不变），可选的标志位（不知道有卵用）            //音乐：AudioManager.STREAM_MUSIC；通话：_VOICE_CALL；系统：_SYSTEM；铃声：_RING；提示音：_NOTIFICATION；闹铃：_ALARM            mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_RAISE, AudioManager.FX_FOCUS_NAVIGATION_UP);        } else {            mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_LOWER, AudioManager.FX_FOCUS_NAVIGATION_UP);        }        Log.i("bqt", "音量=" + mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC));    }    //********************************************************************************************************************    /**     * 获取视频长度，获取网络视频长度时异常！     */    public static String getVideoLength(String filePath) {        MediaMetadataRetriever retriever = new MediaMetadataRetriever();        retriever.setDataSource(filePath);        String length = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);        return length;    }    /**     * 毫秒值装换为时分秒形式     */    @SuppressWarnings("deprecation")    public static String long2Time(long timeLong) {        Date date = new Date(timeLong);        date.setHours(date.getHours() - 8); //沃日，我们这里比标准时长快了八个小时        SimpleDateFormat format = new SimpleDateFormat("HH:mm:ss ");        return format.format(date);    }    /**     * 获取视频缩略图     * @param filePath 视频文件的路径     */    public static Bitmap createVideoThumbnail(String filePath) {        return ThumbnailUtils.createVideoThumbnail(filePath, Video.Thumbnails.MINI_KIND);    }    /**    * 获取视频的缩略图    * 先通过ThumbnailUtils来创建一个视频的缩略图，然后再利用ThumbnailUtils来生成指定大小的缩略图。    * 如果想要的缩略图的宽和高都小于MICRO_KIND，则类型要使用MICRO_KIND作为kind的值，这样会节省内存。    * @param videoPath 视频的路径    * @param width 指定输出视频缩略图的宽度    * @param height 指定输出视频缩略图的高度度    * @param kind 参照Thumbnails类中的常量MINI_KIND(512 x 384) 和 MICRO_KIND(96 x 96)    */    public static Bitmap getVideoThumbnail(String videoPath, int width, int height, int kind) {        // 获取视频的缩略图        Bitmap bitmap = ThumbnailUtils.createVideoThumbnail(videoPath, kind);        bitmap = ThumbnailUtils.extractThumbnail(bitmap, width, height, ThumbnailUtils.OPTIONS_RECYCLE_INPUT);        return bitmap;    }    /**     * 利用反射的方式获取视频缩略图，不建议使用     * @param filePath 视频文件的路径     */    public static Bitmap createVideoThumbnail2(String filePath) {        Class<?> clazz = null;        Object instance = null;        try {            clazz = Class.forName("android.media.MediaMetadataRetriever");            instance = clazz.newInstance();            Method method = clazz.getMethod("setDataSource", String.class);            method.invoke(instance, filePath);            if (Build.VERSION.SDK_INT <= 9) {                return (Bitmap) clazz.getMethod("captureFrame").invoke(instance);            } else {                byte[] data = (byte[]) clazz.getMethod("getEmbeddedPicture").invoke(instance);                if (data != null) {                    Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);                    if (bitmap != null) return bitmap;                }                return (Bitmap) clazz.getMethod("getFrameAtTime").invoke(instance);            }        } catch (Exception ex) {        } finally {            try {                if (instance != null) {                    clazz.getMethod("release").invoke(instance);                }            } catch (Exception ignored) {            }        }        return null;    }    /**     * 将Drawable转化为Bitmap     */    public static Bitmap drawableToBitmap(Drawable drawable) {        // 取 drawable 的长宽，颜色格式          int w = drawable.getIntrinsicWidth();        int h = drawable.getIntrinsicHeight();        Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565;        // 创建对应 bitmap        Bitmap bitmap = Bitmap.createBitmap(w, h, config);        Canvas canvas = new Canvas(bitmap);        drawable.setBounds(0, 0, w, h);        drawable.draw(canvas);        return bitmap;    }    //********************************************************************************************************************    public static final int NETWORK_TYPE_INVALID = 0;    public static final int NETWORK_TYPE_MOBILE = 1;    public static final int NETWORK_TYPE_WIFI = 2;    /**     * 获取当前网络连接状况     * 网络不可用 : {@link #NETWORK_TYPE_INVALID} <br>     * 蜂窝网络(手机流量) : {@link #NETWORK_TYPE_MOBILE}<br>     * WIFI连接 : {@link #NETWORK_TYPE_WIFI}     */    public static int getNetworkType(Context context) {        ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo networkInfo = manager.getActiveNetworkInfo();        if (networkInfo != null && networkInfo.isConnected()) {            String type = networkInfo.getTypeName();            if (type.equalsIgnoreCase("WIFI")) {                return NETWORK_TYPE_WIFI;            } else if (type.equalsIgnoreCase("MOBILE")) {                return NETWORK_TYPE_MOBILE;            }        }        return NETWORK_TYPE_INVALID;    }}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#300f"    android:padding="5dp" >    <RelativeLayout        android:id="@+id/rl_vv"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        android:layout_weight="2016"        android:background="#30f0"        android:minHeight="200dp"        android:padding="5dp" >        <VideoView            android:id="@+id/mVideoView"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerInParent="true"            android:padding="5dp" />    </RelativeLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:orientation="horizontal" >        <Button            android:id="@+id/btn_start"            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:text="播放/暂停" />        <Button            android:id="@+id/btn_switch"            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:text="横竖屏切换" />        <Button            android:id="@+id/btn_fullscreen"            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:text="全屏" />    </LinearLayout>    <ProgressBar        android:id="@+id/progressBar"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerInParent="true" /></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.bqt.videoview"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="17"        android:targetSdkVersion="21" />    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />    <!-- 网络权限 -->    <uses-permission android:name="android.permission.INTERNET" />    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />    <!-- 滑动改变屏幕亮度/音量 -->    <uses-permission android:name="android.permission.WRITE_SETTINGS" />    <uses-permission android:name="android.permission.VIBRATE" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name=".MainActivity"            android:configChanges="keyboard|orientation|screenSize"            android:label="@string/app_name"            android:theme="@style/Theme.AppCompat.Light.NoActionBar" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>