The left half of the video screen slides up and down to change the brightness, and the right half slides up and down to change the sound and brightness.

The left half of the video screen slides up and down to change the brightness, and the right half slides up and down to change the sound and brightness.

Note:
Functions:
(1) the right part of the screen slides up and down, and the sound slides up and down. The left part of the screen slides up and down, the brightness increases, and the brightness decreases.
(2) If the brightness is greater than 1 or less than 0.2, the phone shake

Private float startY; // records the Y coordinate when the finger is pressed.
Private float startX; // records the Y coordinate when the finger is pressed.
Private int downVol; // record the volume when the finger is pressed
Private Vibrator vibrator; // mobile phone Vibrator
// Do not forget the vibration permission <uses-permission android: name = "android. permission. VIBRATE"/>
/*
* Set the screen brightness lp = 0 to full darkness, lp =-1. According to the system settings, lp = 1; brightest
*/
Public void setBrightness (float brightness ){
WindowManager. LayoutParams lp = getWindow (). getAttributes ();
// If (lp. screenBrightness <= 0.1 ){
// Return;
//}
Lp. screenBrightness = lp. screenBrightness + brightness/255.0f;
If (lp. screenBrightness> 1 ){
Lp. screenBrightness = 1;
Vibrator = (Vibrator) getSystemService (VIBRATOR_SERVICE );
Long [] pattern = {10,200}; // OFF/ON/OFF/ON... Close 10 seconds Vibration for 200 milliseconds, keep switching
Vibrator. vibrate (pattern,-1 );
} Else if (lp. screenBrightness <0.2 ){
Lp. screenBrightness = (float) 0.2;
Vibrator = (Vibrator) getSystemService (VIBRATOR_SERVICE );
Long [] pattern = {10,200}; // OFF/ON/OFF/ON...
Vibrator. vibrate (pattern,-1 );
}
GetWindow (). setAttributes (lp );
}
@ Override
Public boolean onTouchEvent (MotionEvent event ){
// Send the event to the gesture recognition device (Note: Only the event is parsed and not intercepted. The event is parsed into the click, double-click, and long-press of Gesture Recognition)
Detector. onTouchEvent (event );

Switch (event. getAction ()){
Case MotionEvent. ACTION_DOWN:
StartY = event. getY ();
StartX = event. getX ();
DownVol = audioManager. getStreamVolume (AudioManager. STREAM_MUSIC );
Handler. removeMessages (HIDE_CONTROL );
Break;
Case MotionEvent. ACTION_MOVE:
Float endY = event. getY ();
Float distanceY = startY-endY;
If (startX> screenWidth/2 ){
// The right part of the screen slides up, the sound increases, the sound drops, and the sound decreases
Int touchRang = Math. min (screenWidth, screenHeight );
// Int curvol = (int) (downVol + (distance/screenHeight) * maxVolume );
Int curvol = (int) (downVol + (distanceY/touchRang) * maxVolume); // considering the problem of horizontal/vertical screen Switching
Int volume = Math. min (Math. max (0, curvol), maxVolume );
UpdateVolume (volume );
} Else {
// The left part of the screen slides up and down, causing greater brightness and lower brightness.
Final double FLING_MIN_DISTANCE = 0.5;
Final double FLING_MIN_VELOCITY = 0.5;
If (distanceY> FLING_MIN_DISTANCE & Math. abs (distanceY)> FLING_MIN_VELOCITY ){
SetBrightness (20 );
}
If (distanceY <FLING_MIN_DISTANCE
& Math. abs (distanceY)> FLING_MIN_VELOCITY ){
SetBrightness (-20 );
}
}

Break;
Case MotionEvent. ACTION_UP:
Handler. sendEmptyMessageDelayed (hidemo_control, 5000 );
Break;
}
Return super. onTouchEvent (event );
}