本章继续完善播放相关播放器的核心功能，为后续扩展打好基础。

声明

欢迎转载，但请保留文章原始出处:) 

博客园：http://www.cnblogs.com

农民伯伯： http://over140.cnblogs.com

系列

1、使用Vitamio打造自己的Android万能播放器（1）——准备  

正文

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <io.vov.vitamio.widget.VideoView
        android:id="@+id/surface_view" android:layout_width="match_parent"
        android:layout_height="match_parent" android:layout_centerHorizontal="true"
        android:layout_centerVertical="true" />
    <FrameLayout android:id="@+id/operation_volume_brightness"
        android:visibility="invisible" android:layout_centerInParent="true"
        android:layout_width="wrap_content" android:layout_height="wrap_content"
        android:background="#00000000" android:orientation="horizontal"
        android:padding="0dip">
        <ImageView android:id="@+id/operation_bg"
            android:layout_gravity="center" android:src="@drawable/video_volumn_bg"
            android:layout_width="wrap_content" android:layout_height="wrap_content" />
        <FrameLayout android:layout_gravity="bottom|center_horizontal"
            android:layout_width="wrap_content" android:layout_height="wrap_content"
            android:paddingBottom="25dip">
            <ImageView android:id="@+id/operation_full"
                android:layout_gravity="left" android:src="@drawable/video_num_bg"
                android:layout_width="94dip" android:layout_height="wrap_content" />
            <ImageView android:id="@+id/operation_percent"
                android:layout_gravity="left" android:src="@drawable/video_num_front"
                android:layout_width="0dip" android:layout_height="wrap_content"
                android:scaleType="matrix" />
        </FrameLayout>
    </FrameLayout>

/**
     * 
     * Android万能播放器
     * 
     * @author 农民伯伯
     * @version 2012-5-22
     * 
     */
    public class VideoViewDemo extends Activity {
    
        private String path = Environment.getExternalStorageDirectory()
                + "/Moon.mp4";
        private VideoView mVideoView;
        private View mVolumeBrightnessLayout;
        private ImageView mOperationBg;
        private ImageView mOperationPercent;
        private AudioManager mAudioManager;
        /** 最大声音 */
        private int mMaxVolume;
        /** 当前声音 */
        private int mVolume = -1;
        /** 当前亮度 */
        private float mBrightness = -1f;
        /** 当前缩放模式 */
        private int mLayout = VideoView.VIDEO_LAYOUT_ZOOM;
        private GestureDetector mGestureDetector;
        private MediaController mMediaController;
    
        @Override
        public void onCreate(Bundle icicle) {
            super.onCreate(icicle);
            setContentView(R.layout.videoview);
            mVideoView = (VideoView) findViewById(R.id.surface_view);
            mVolumeBrightnessLayout = findViewById(R.id.operation_volume_brightness);
            mOperationBg = (ImageView) findViewById(R.id.operation_bg);
            mOperationPercent = (ImageView) findViewById(R.id.operation_percent);
    
            mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
            mMaxVolume = mAudioManager
                    .getStreamMaxVolume(AudioManager.STREAM_MUSIC);
            mVideoView.setVideoPath(path);
            mMediaController = new MediaController(this);
            mVideoView.setMediaController(mMediaController);
            mVideoView.requestFocus();
    
            mGestureDetector = new GestureDetector(this, new MyGestureListener());
        }
    
        @Override
        public boolean onTouchEvent(MotionEvent event) {
            if (mGestureDetector.onTouchEvent(event))
                return true;
    
            // 处理手势结束
            switch (event.getAction() & MotionEvent.ACTION_MASK) {
            case MotionEvent.ACTION_UP:
                endGesture();
                break;
            }
    
            return super.onTouchEvent(event);
        }
    
        /** 手势结束 */
        private void endGesture() {
            mVolume = -1;
            mBrightness = -1f;
    
            // 隐藏
            mDismissHandler.removeMessages(0);
            mDismissHandler.sendEmptyMessageDelayed(0, 500);
        }
    
        private class MyGestureListener extends SimpleOnGestureListener {
    
            /** 双击 */
            @Override
            public boolean onDoubleTap(MotionEvent e) {
                if (mLayout == VideoView.VIDEO_LAYOUT_ZOOM)
                    mLayout = VideoView.VIDEO_LAYOUT_ORIGIN;
                else
                    mLayout++;
                if (mVideoView != null)
                    mVideoView.setVideoLayout(mLayout, 0);
                return true;
            }
    
            /** 滑动 */
            @Override
            public boolean onScroll(MotionEvent e1, MotionEvent e2,
                    float distanceX, float distanceY) {
                float mOldX = e1.getX(), mOldY = e1.getY();
                int y = (int) e2.getRawY();
                Display disp = getWindowManager().getDefaultDisplay();
                int windowWidth = disp.getWidth();
                int windowHeight = disp.getHeight();
    
                if (mOldX > windowWidth * 4.0 / 5)// 右边滑动
                    onVolumeSlide((mOldY - y) / windowHeight);
                else if (mOldX < windowWidth / 5.0)// 左边滑动
                    onBrightnessSlide((mOldY - y) / windowHeight);
    
                return super.onScroll(e1, e2, distanceX, distanceY);
            }
        }
    
        /** 定时隐藏 */
        private Handler mDismissHandler = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                mVolumeBrightnessLayout.setVisibility(View.GONE);
            }
        };
    
        /**
         * 滑动改变声音大小
         * 
         * @param percent
         */
        private void onVolumeSlide(float percent) {
            if (mVolume == -1) {
                mVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
                if (mVolume < 0)
                    mVolume = 0;
    
                // 显示
                mOperationBg.setImageResource(R.drawable.video_volumn_bg);
                mVolumeBrightnessLayout.setVisibility(View.VISIBLE);
            }
    
            int index = (int) (percent * mMaxVolume) + mVolume;
            if (index > mMaxVolume)
                index = mMaxVolume;
            else if (index < 0)
                index = 0;
    
            // 变更声音
            mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, index, 0);
    
            // 变更进度条
            ViewGroup.LayoutParams lp = mOperationPercent.getLayoutParams();
            lp.width = findViewById(R.id.operation_full).getLayoutParams().width
                    * index / mMaxVolume;
            mOperationPercent.setLayoutParams(lp);
        }
    
        /**
         * 滑动改变亮度
         * 
         * @param percent
         */
        private void onBrightnessSlide(float percent) {
            if (mBrightness < 0) {
                mBrightness = getWindow().getAttributes().screenBrightness;
                if (mBrightness <= 0.00f)
                    mBrightness = 0.50f;
                if (mBrightness < 0.01f)
                    mBrightness = 0.01f;
    
                // 显示
                mOperationBg.setImageResource(R.drawable.video_brightness_bg);
                mVolumeBrightnessLayout.setVisibility(View.VISIBLE);
            }
            WindowManager.LayoutParams lpa = getWindow().getAttributes();
            lpa.screenBrightness = mBrightness + percent;
            if (lpa.screenBrightness > 1.0f)
                lpa.screenBrightness = 1.0f;
            else if (lpa.screenBrightness < 0.01f)
                lpa.screenBrightness = 0.01f;
            getWindow().setAttributes(lpa);
    
            ViewGroup.LayoutParams lp = mOperationPercent.getLayoutParams();
            lp.width = (int) (findViewById(R.id.operation_full).getLayoutParams().width * lpa.screenBrightness);
            mOperationPercent.setLayoutParams(lp);
        }
    
        @Override
        public void onConfigurationChanged(Configuration newConfig) {
            if (mVideoView != null)
                mVideoView.setVideoLayout(mLayout, 0);
            super.onConfigurationChanged(newConfig);
        }

结束