Android 使用Vitamio打造自己的万能播放器（2）―― 手势控制亮度、音量、缩放

<?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></RelativeLayout>

 /** *  * Android万能播放器 *  *  */ 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); } }