Android ijkplayer的使用解析

https://blog.csdn.net/word_code/article/details/78292535

ijkplayer是Bilibili基于ffmpeg开发并开源的轻量级视频播放器，支持播放本地网络视频，也支持流媒体播放。支持Android&iOS。

ijkplayer的编译这里不多阐述，我也是直接获取别人编译完成的so库文件，直接使用的。如果你对ijkplayer的编译感兴趣，可以百度一下，有很多文章。

使用ijkplayer

导包

ijkplayer源码官方下载地址：https://github.com/Bilibili/ijkplayer
上面是官方提供的ijkplayer的源码地址，但是它是没有编译过的。下面我给大家分享一份编译好的ijkplayer源码，由于比较大，分了三个包才上传完成，需要三个包都下载后才能一起解压：

我们下载完成，进入android/ijkplayer目录：

这里写图片描述

ijkplayer-java：ijkplayer的一些操作封装及定义。这里面是通用的API接口，里面最主要的是IMediaPlayer，它是用来渲染显示多媒体的。
ijkplayer-exo：google开源的一个新的播放器ExoPlayer，在Demo中和ijkplayer对比用的。通过安装ijkplayer可以发现setting里面可以选择不同player来渲染多媒体显示，该模块下面就是一个MediaPlayer。
ijkplayer-example：测试程序
ijkplayer-{arch}：编译出来的各个版本的.so文件。

官方提供的Demo的代码还是挺多的，甚至还用了otto,需要对官方的demo进行精简，去除一些用不到的代码。
首先需要的是ijkplayer-{arch}、ijkplayer-java两个库。exo是Google提供的新的播放器，这里不需要，直接砍掉。其次是ijkplayer-example里的，我们需要的只有tv.danmaku.ijk.media.example.widget.media包下的部分类。
注：
链接库ijkplayer-arm64，ijkplayer-armv5，ijkplayer-armv7a，ijkplayer-x86，ijkplayer-x86_64是不同体系架构的动态链接库，在当前工程结构里面作为一个模块，如果不想做兼容多平台问题，可以删除其他目录结构，单独保留自己需要的平台目录。

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新建一个工程：
（1）把ijkplayer-armv7a/src/main/libs下的文件拷贝到新工程app目录的libs下。
（2）把ijkplayer-java/build/outputs/aar/ijkplayer-java-release.aar复制到新工程app目录的libs下。
（3）修改APP下的build.gradle, 主要设置.so及.aar的位置:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "25.0.0"
    defaultConfig {
        applicationId "com.hx.ijkplayer_demo"
        minSdkVersion 14
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    sourceSets {
        main {
            jniLibs.srcDirs = ['libs']  /**在libs文件夹下找so文件*/
        }
    }
}

repositories {
    mavenCentral()
    flatDir {
        dirs 'libs' /**在libs文件夹下找aar文件*/
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:24.2.1'
    testCompile 'junit:junit:4.12'
    compile(name: 'ijkplayer-java-release', ext: 'aar') /**编译ijkplayer-java-release.aar文件*/
}

（4）复制ijkplayer-example下面的tv.danmaku.ijk.media.example.widget.media到新的工程，删掉一些不需要类。 .

这里写图片描述

（5）IjkVideoView里面还是有很多如exo等没用的东西，删！具体可以参见我后面的Demo。

（6）Manifest

...
<activity android:name=".MainActivity"
          android:screenOrientation="sensorLandscape"
          android:configChanges="orientation|keyboardHidden">
...
</activity>
...
<uses-permission android:name="android.permission.INTERNET"/>

播放实现

Xml代码
**

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    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"
    tools:context=".MainActivity">

    <com.hx.ijkplayer_demo.widget.media.IjkVideoView
        android:id="@+id/video_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
</RelativeLayout>

Java代码

public class MainActivity extends AppCompatActivity {

    private IjkVideoView videoView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        videoView = (IjkVideoView) findViewById(R.id.video_view);
        videoView.setAspectRatio(IRenderView.AR_ASPECT_FIT_PARENT);
        videoView.setVideoURI(Uri.parse("http://zv.3gv.ifeng.com/live/zhongwen800k.m3u8"));
        videoView.start();
    }
}

常用函数

/**
 * 参数aspectRatio(缩放参数)参见IRenderView的常量：IRenderView.AR_ASPECT_FIT_PARENT,
IRenderView.AR_ASPECT_FILL_PARENT,
IRenderView.AR_ASPECT_WRAP_CONTENT,
IRenderView.AR_MATCH_PARENT,
IRenderView.AR_16_9_FIT_PARENT,
IRenderView.AR_4_3_FIT_PARENT
 */
public void setAspectRatio(int aspectRatio);
//改变视频缩放状态。
public int toggleAspectRatio();
//设置视频路径。
public void setVideoPath(String path);
//设置视频URI。（可以是网络视频地址）
public void setVideoURI(Uri uri);
//停止视频播放，并释放资源。
public void stopPlayback();
/**
 * 设置媒体控制器。
 * 参数controller:媒体控制器，注意是com.hx.ijkplayer_demo.widget.media.IMediaController。
 */
public void setMediaController(IMediaController controller);
//改变媒体控制器显隐
private void toggleMediaControlsVisiblity();
//注册一个回调函数，在视频预处理完成后调用。在视频预处理完成后被调用。此时视频的宽度、高度、宽高比信息已经获取到，此时可调用seekTo让视频从指定位置开始播放。
public void setOnPreparedListener(OnPreparedListener l);
//播放完成回调
public void setOnCompletionListener(IMediaPlayer.OnCompletionListener l);
//播放错误回调
public void setOnErrorListener(IMediaPlayer.OnErrorListener l);
//事件发生回调
public void setOnInfoListener(IMediaPlayer.OnInfoListener l);
//获取总长度
public int getDuration();
//获取当前播放位置。
public long getCurrentPosition();
//设置播放位置。单位毫秒
public void seekTo(long msec);
//是否正在播放。
public boolean isPlaying();
//获取缓冲百分比。
public int getBufferPercentage();

封装ijkplayer

上面只是ijkplayer的一个基本用法。我们可以对ijkplayer进行一次封装，让ijkplayer使用起来更加简单。

功能：

使用Vitamio的VideoView进行视频播放
视频左侧界面（左1/2以内）上下滑动调节亮度
视频右侧界面（右1/2以外）上下滑动调节声音双击切换视频窗口布局
非直播状态，可以左右滑动调节当前播放进度

public class PlayerManager {
    /**
     * 可能会剪裁,保持原视频的大小，显示在中心,当原视频的大小超过view的大小超过部分裁剪处理
     */
    public static final String SCALETYPE_FITPARENT="fitParent";
    /**
     * 可能会剪裁,等比例放大视频，直到填满View为止,超过View的部分作裁剪处理
     */
    public static final String SCALETYPE_FILLPARENT="fillParent";
    /**
     * 将视频的内容完整居中显示，如果视频大于view,则按比例缩视频直到完全显示在view中
     */
    public static final String SCALETYPE_WRAPCONTENT="wrapContent";
    /**
     * 不剪裁,非等比例拉伸画面填满整个View
     */
    public static final String SCALETYPE_FITXY="fitXY";
    /**
     * 不剪裁,非等比例拉伸画面到16:9,并完全显示在View中
     */
    public static final String SCALETYPE_16_9="16:9";
    /**
     * 不剪裁,非等比例拉伸画面到4:3,并完全显示在View中
     */
    public static final String SCALETYPE_4_3="4:3";

    /**
     * 状态常量
     */
    private final int STATUS_ERROR=-1;
    private final int STATUS_IDLE=0;
    private final int STATUS_LOADING=1;
    private final int STATUS_PLAYING=2;
    private final int STATUS_PAUSE=3;
    private final int STATUS_COMPLETED=4;

    private final Activity activity;
    private final IjkVideoView videoView;
    private final AudioManager audioManager;
    public GestureDetector gestureDetector;

    private boolean playerSupport;
    private boolean isLive = false;//是否为直播
    private boolean fullScreenOnly;
    private boolean portrait;

    private final int mMaxVolume;
    private int screenWidthPixels;
    private int currentPosition;
    private int status=STATUS_IDLE;
    private long pauseTime;
    private String url;

    private float brightness=-1;
    private int volume=-1;
    private long newPosition = -1;
    private long defaultRetryTime=5000;

    private OrientationEventListener orientationEventListener;
    private PlayerStateListener playerStateListener;

    public void setPlayerStateListener(PlayerStateListener playerStateListener) {
        this.playerStateListener = playerStateListener;
    }

    private OnErrorListener onErrorListener=new OnErrorListener() {
        @Override
        public void onError(int what, int extra) {
        }
    };

    private OnCompleteListener onCompleteListener=new OnCompleteListener() {
        @Override
        public void onComplete() {
        }
    };

    private OnInfoListener onInfoListener=new OnInfoListener(){
        @Override
        public void onInfo(int what, int extra) {

        }
    };
    private OnControlPanelVisibilityChangeListener onControlPanelVisibilityChangeListener=new OnControlPanelVisibilityChangeListener() {
        @Override
        public void change(boolean isShowing) {
        }
    };

    /**
     * try to play when error(only for live video)
     * @param defaultRetryTime millisecond,0 will stop retry,default is 5000 millisecond
     */
    public void setDefaultRetryTime(long defaultRetryTime) {
        this.defaultRetryTime = defaultRetryTime;
    }

    public PlayerManager(final Activity activity) {
        try {
            IjkMediaPlayer.loadLibrariesOnce(null);
            IjkMediaPlayer.native_profileBegin("libijkplayer.so");
            playerSupport=true;
        } catch (Throwable e) {
            Log.e("GiraffePlayer", "loadLibraries error", e);
        }
        this.activity=activity;
        screenWidthPixels = activity.getResources().getDisplayMetrics().widthPixels;

        videoView = (IjkVideoView) activity.findViewById(R.id.video_view);
        videoView.setOnCompletionListener(new IMediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(IMediaPlayer mp) {
                statusChange(STATUS_COMPLETED);
                onCompleteListener.onComplete();
            }
        });
        videoView.setOnErrorListener(new IMediaPlayer.OnErrorListener() {
            @Override
            public boolean onError(IMediaPlayer mp, int what, int extra) {
                statusChange(STATUS_ERROR);
                onErrorListener.onError(what,extra);
                return true;
            }
        });
        videoView.setOnInfoListener(new IMediaPlayer.OnInfoListener() {
            @Override
            public boolean onInfo(IMediaPlayer mp, int what, int extra) {
                switch (what) {
                    case IMediaPlayer.MEDIA_INFO_BUFFERING_START:
                        statusChange(STATUS_LOADING);
                        break;
                    case IMediaPlayer.MEDIA_INFO_BUFFERING_END:
                        statusChange(STATUS_PLAYING);
                        break;
                    case IMediaPlayer.MEDIA_INFO_NETWORK_BANDWIDTH:
                        //显示下载速度
//                      Toast.show("download rate:" + extra);
                        break;
                    case IMediaPlayer.MEDIA_INFO_VIDEO_RENDERING_START:
                        statusChange(STATUS_PLAYING);
                        break;
                }
                onInfoListener.onInfo(what,extra);
                return false;
            }
        });

        audioManager = (AudioManager) activity.getSystemService(Context.AUDIO_SERVICE);
        mMaxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
        gestureDetector = new GestureDetector(activity, new PlayerGestureListener());

        if (fullScreenOnly) {
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        }
        portrait=getScreenOrientation()== ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;

        if (!playerSupport) {
            DebugLog.e("播放器不支持此设备");
        }
    }

    private void statusChange(int newStatus) {
        status = newStatus;
        if (!isLive && newStatus==STATUS_COMPLETED) {
            DebugLog.d("statusChange STATUS_COMPLETED...");
            if (playerStateListener != null){
                playerStateListener.onComplete();
            }
        }else if (newStatus == STATUS_ERROR) {
            DebugLog.d("statusChange STATUS_ERROR...");
            if (playerStateListener != null){
                playerStateListener.onError();
            }
        } else if(newStatus==STATUS_LOADING){
//            $.id(R.id.app_video_loading).visible();
            if (playerStateListener != null){
                playerStateListener.onLoading();
            }
            DebugLog.d("statusChange STATUS_LOADING...");
        } else if (newStatus == STATUS_PLAYING) {
            DebugLog.d("statusChange STATUS_PLAYING...");
            if (playerStateListener != null){
                playerStateListener.onPlay();
            }
        }
    }

    public void onPause() {
        pauseTime= System.currentTimeMillis();
        if (status==STATUS_PLAYING) {
            videoView.pause();
            if (!isLive) {
                currentPosition = videoView.getCurrentPosition();
            }
        }
    }

    public void onResume() {
        pauseTime=0;
        if (status==STATUS_PLAYING) {
            if (isLive) {
                videoView.seekTo(0);
            } else {
                if (currentPosition>0) {
                    videoView.seekTo(currentPosition);
                }
            }
            videoView.start();
        }
    }

    public void onDestroy() {
        orientationEventListener.disable();
        videoView.stopPlayback();
    }

    public void play(String url) {
        this.url = url;
        if (playerSupport) {
            videoView.setVideoPath(url);
            videoView.start();
        }
    }

    private String generateTime(long time) {
        int totalSeconds = (int) (time / 1000);
        int seconds = totalSeconds % 60;
        int minutes = (totalSeconds / 60) % 60;
        int hours = totalSeconds / 3600;
        return hours > 0 ? String.format("%02d:%02d:%02d", hours, minutes, seconds) : String.format("%02d:%02d", minutes, seconds);
    }

    private int getScreenOrientation() {
        int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
        DisplayMetrics dm = new DisplayMetrics();
        activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
        int width = dm.widthPixels;
        int height = dm.heightPixels;
        int orientation;
        // if the device's natural orientation is portrait:
        if ((rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_180) && height > width ||
                (rotation == Surface.ROTATION_90 || rotation == Surface.ROTATION_270) && width > height) {
            switch (rotation) {
                case Surface.ROTATION_0:
                    orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
                    break;
                case Surface.ROTATION_90:
                    orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
                    break;
                case Surface.ROTATION_180:
                    orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
                    break;
                case Surface.ROTATION_270:
                    orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
                    break;
                default:
                    orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
                    break;
            }
        }
        // if the device's natural orientation is landscape or if the device
        // is square:
        else {
            switch (rotation) {
                case Surface.ROTATION_0:
                    orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
                    break;
                case Surface.ROTATION_90:
                    orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
                    break;
                case Surface.ROTATION_180:
                    orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
                    break;
                case Surface.ROTATION_270:
                    orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
                    break;
                default:
                    orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
                    break;
            }
        }
        return orientation;
    }

    /**
     * 滑动改变声音大小
     *
     * @param percent
     */
    private void onVolumeSlide(float percent) {
        if (volume == -1) {
            volume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
            if (volume < 0)
                volume = 0;
        }
        int index = (int) (percent * mMaxVolume) + volume;
        if (index > mMaxVolume) {
            index = mMaxVolume;
        } else if (index < 0){
            index = 0;
        }
        // 变更声音
        audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, index, 0);
        // 变更进度条
        int i = (int) (index * 1.0 / mMaxVolume * 100);
        String s = i + "%";
        if (i == 0) {
            s = "off";
        }
        DebugLog.d("onVolumeSlide:"+s);
    }

    private void onProgressSlide(float percent) {
        long position = videoView.getCurrentPosition();
        long duration = videoView.getDuration();
        long deltaMax = Math.min(100 * 1000, duration - position);
        long delta = (long) (deltaMax * percent);

        newPosition = delta + position;
        if (newPosition > duration) {
            newPosition = duration;
        } else if (newPosition <= 0) {
            newPosition=0;
            delta=-position;
        }
        int showDelta = (int) delta / 1000;
        if (showDelta != 0) {
            String text = showDelta > 0 ? ("+" + showDelta) : "" + showDelta;
            DebugLog.d("onProgressSlide:" + text);
        }
    }

    /**
     * 滑动改变亮度
     *
     * @param percent
     */
    private void onBrightnessSlide(float percent) {
        if (brightness < 0) {
            brightness = activity.getWindow().getAttributes().screenBrightness;
            if (brightness <= 0.00f){
                brightness = 0.50f;
            }else if (brightness < 0.01f){
                brightness = 0.01f;
            }
        }
        DebugLog.d("brightness:"+brightness+",percent:"+ percent);
        WindowManager.LayoutParams lpa = activity.getWindow().getAttributes();
        lpa.screenBrightness = brightness + percent;
        if (lpa.screenBrightness > 1.0f){
            lpa.screenBrightness = 1.0f;
        }else if (lpa.screenBrightness < 0.01f){
            lpa.screenBrightness = 0.01f;
        }
        activity.getWindow().setAttributes(lpa);
    }

    public void setFullScreenOnly(boolean fullScreenOnly) {
        this.fullScreenOnly = fullScreenOnly;
        tryFullScreen(fullScreenOnly);
        if (fullScreenOnly) {
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        } else {
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
        }
    }

    private void tryFullScreen(boolean fullScreen) {
        if (activity instanceof AppCompatActivity) {
            ActionBar supportActionBar = ((AppCompatActivity) activity).getSupportActionBar();
            if (supportActionBar != null) {
                if (fullScreen) {
                    supportActionBar.hide();
                } else {
                    supportActionBar.show();
                }
            }
        }
        setFullScreen(fullScreen);
    }

    private void setFullScreen(boolean fullScreen) {
        if (activity != null) {
            WindowManager.LayoutParams attrs = activity.getWindow().getAttributes();
            if (fullScreen) {
                attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
                activity.getWindow().setAttributes(attrs);
                activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
            } else {
                attrs.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN);
                activity.getWindow().setAttributes(attrs);
                activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
            }
        }
    }

    /**
     * <pre>
     *     fitParent:可能会剪裁,保持原视频的大小，显示在中心,当原视频的大小超过view的大小超过部分裁剪处理
     *     fillParent:可能会剪裁,等比例放大视频，直到填满View为止,超过View的部分作裁剪处理
     *     wrapContent:将视频的内容完整居中显示，如果视频大于view,则按比例缩视频直到完全显示在view中
     *     fitXY:不剪裁,非等比例拉伸画面填满整个View
     *     16:9:不剪裁,非等比例拉伸画面到16:9,并完全显示在View中
     *     4:3:不剪裁,非等比例拉伸画面到4:3,并完全显示在View中
     * </pre>
     * @param scaleType
     */
    public void setScaleType(String scaleType) {
        if (SCALETYPE_FITPARENT.equals(scaleType)) {
            videoView.setAspectRatio(IRenderView.AR_ASPECT_FIT_PARENT);
        }else if (SCALETYPE_FILLPARENT.equals(scaleType)) {
            videoView.setAspectRatio(IRenderView.AR_ASPECT_FILL_PARENT);
        }else if (SCALETYPE_WRAPCONTENT.equals(scaleType)) {
            videoView.setAspectRatio(IRenderView.AR_ASPECT_WRAP_CONTENT);
        }else if (SCALETYPE_FITXY.equals(scaleType)) {
            videoView.setAspectRatio(IRenderView.AR_MATCH_PARENT);
        }else if (SCALETYPE_16_9.equals(scaleType)) {
            videoView.setAspectRatio(IRenderView.AR_16_9_FIT_PARENT);
        }else if (SCALETYPE_4_3.equals(scaleType)) {
            videoView.setAspectRatio(IRenderView.AR_4_3_FIT_PARENT);
        }
    }

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

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

    public boolean onBackPressed() {
        if (!fullScreenOnly && getScreenOrientation() == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) {
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            return true;
        }
        return false;
    }

    class Query {
        private final Activity activity;
        private View view;

        public Query(Activity activity) {
            this.activity=activity;
        }

        public Query id(int id) {
            view = activity.findViewById(id);
            return this;
        }

        public Query image(int resId) {
            if (view instanceof ImageView) {
                ((ImageView) view).setImageResource(resId);
            }
            return this;
        }

        public Query visible() {
            if (view != null) {
                view.setVisibility(View.VISIBLE);
            }
            return this;
        }

        public Query gone() {
            if (view != null) {
                view.setVisibility(View.GONE);
            }
            return this;
        }

        public Query invisible() {
            if (view != null) {
                view.setVisibility(View.INVISIBLE);
            }
            return this;
        }

        public Query clicked(View.OnClickListener handler) {
            if (view != null) {
                view.setOnClickListener(handler);
            }
            return this;
        }

        public Query text(CharSequence text) {
            if (view!=null && view instanceof TextView) {
                ((TextView) view).setText(text);
            }
            return this;
        }

        public Query visibility(int visible) {
            if (view != null) {
                view.setVisibility(visible);
            }
            return this;
        }

        private void size(boolean width, int n, boolean dip){
            if(view != null){
                ViewGroup.LayoutParams lp = view.getLayoutParams();
                if(n > 0 && dip){
                    n = dip2pixel(activity, n);
                }
                if(width){
                    lp.width = n;
                }else{
                    lp.height = n;
                }
                view.setLayoutParams(lp);
            }
        }

        public void height(int height, boolean dip) {
            size(false,height,dip);
        }

        public int dip2pixel(Context context, float n){
            int value = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, n, context.getResources().getDisplayMetrics());
            return value;
        }

        public float pixel2dip(Context context, float n){
            Resources resources = context.getResources();
            DisplayMetrics metrics = resources.getDisplayMetrics();
            float dp = n / (metrics.densityDpi / 160f);
            return dp;
        }
    }

    public class PlayerGestureListener extends GestureDetector.SimpleOnGestureListener {
        private boolean firstTouch;
        private boolean volumeControl;
        private boolean toSeek;

        /**
         * 双击
         */
        @Override
        public boolean onDoubleTap(MotionEvent e) {
            videoView.toggleAspectRatio();
            return true;
        }

        @Override
        public boolean onDown(MotionEvent e) {
            firstTouch = true;
            return super.onDown(e);
        }

        /**
         * 滑动
         */
        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
            float mOldX = e1.getX(), mOldY = e1.getY();
            float deltaY = mOldY - e2.getY();
            float deltaX = mOldX - e2.getX();
            if (firstTouch) {
                toSeek = Math.abs(distanceX) >= Math.abs(distanceY);
                volumeControl=mOldX > screenWidthPixels * 0.5f;
                firstTouch = false;
            }

            if (toSeek) {
                if (!isLive) {
                    onProgressSlide(-deltaX / videoView.getWidth());
                }
            } else {
                float percent = deltaY / videoView.getHeight();
                if (volumeControl) {
                    onVolumeSlide(percent);
                } else {
                    onBrightnessSlide(percent);
                }
            }

            return super.onScroll(e1, e2, distanceX, distanceY);
        }

        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            return true;
        }
    }

    /**
     * is player support this device
     * @return
     */
    public boolean isPlayerSupport() {
        return playerSupport;
    }

    /**
     * 是否正在播放
     * @return
     */
    public boolean isPlaying() {
        return videoView!=null?videoView.isPlaying():false;
    }

    public void stop(){
        videoView.stopPlayback();
    }

    public int getCurrentPosition(){
        return videoView.getCurrentPosition();
    }

    /**
     * get video duration
     * @return
     */
    public int getDuration(){
        return videoView.getDuration();
    }

    public PlayerManager playInFullScreen(boolean fullScreen){
        if (fullScreen) {
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        }
        return this;
    }

    public PlayerManager onError(OnErrorListener onErrorListener) {
        this.onErrorListener = onErrorListener;
        return this;
    }

    public PlayerManager onComplete(OnCompleteListener onCompleteListener) {
        this.onCompleteListener = onCompleteListener;
        return this;
    }

    public PlayerManager onInfo(OnInfoListener onInfoListener) {
        this.onInfoListener = onInfoListener;
        return this;
    }

    public PlayerManager onControlPanelVisibilityChange(OnControlPanelVisibilityChangeListener listener){
        this.onControlPanelVisibilityChangeListener = listener;
        return this;
    }

    /**
     * set is live (can't seek forward)
     * @param isLive
     * @return
     */
    public PlayerManager live(boolean isLive) {
        this.isLive = isLive;
        return this;
    }

    public PlayerManager toggleAspectRatio(){
        if (videoView != null) {
            videoView.toggleAspectRatio();
        }
        return this;
    }

    public interface PlayerStateListener{
        void onComplete();
        void onError();
        void onLoading();
        void onPlay();
    }

    public interface OnErrorListener{
        void onError(int what, int extra);
    }

    public interface OnCompleteListener{
        void onComplete();
    }

    public interface OnControlPanelVisibilityChangeListener{
        void change(boolean isShowing);
    }

    public interface OnInfoListener{
        void onInfo(int what, int extra);
    }
}

使用封装后的PlayerManager播放视频：

public class MainActivity extends AppCompatActivity implements PlayerManager.PlayerStateListener{
    private String url1 = "rtmp://203.207.99.19:1935/live/CCTV5";
    private String url2 = "http://zv.3gv.ifeng.com/live/zhongwen800k.m3u8";
    private String url3 = "rtsp://184.72.239.149/vod/mp4:BigBuckBunny_115k.mov";
    private String url4 = "http://42.96.249.166/live/24035.m3u8";
    private PlayerManager player;

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

    private void initPlayer() {
        player = new PlayerManager(this);
        player.setFullScreenOnly(true);
        player.setScaleType(PlayerManager.SCALETYPE_FILLPARENT);
        player.playInFullScreen(true);
        player.setPlayerStateListener(this);
        player.play(url1);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (player.gestureDetector.onTouchEvent(event))
            return true;
        return super.onTouchEvent(event);
    }

    @Override
    public void onComplete() {
    }

    @Override
    public void onError() {
    }

    @Override
    public void onLoading() {
    }

    @Override
    public void onPlay() {
    }
}