Basic functions of mobile AV 7--video player (4)

1. Tune the sound with Audiomanager

1_ get current volume and maximum volume

About setting the volume private int currentvolume;//current volume value private int currentmaxvolume;//current maximum volume private audiomanager am;am = ( Audiomanager) Getsystemservice (audio_service);     Currentvolume = Am.getstreamvolume (audiomanager.stream_music); currentmaxvolume = Am.getstreammaxvolume ( Audiomanager.stream_music);

2_ change the volume when dragging

Voice_seekbar.setonseekbarchangelistener (New Onseekbarchangelistener () {              @Override public       Void Onstoptrackingtouch (SeekBar SeekBar) {          senddelayedhidecontrolplayermessage ();       }              @Override public       void Onstarttrackingtouch (SeekBar SeekBar) {          removedelayedhidecontrolplayermessage ();       }              @Override public       void onprogresschanged (SeekBar SeekBar, int progress,            Boolean fromuser) {          if (fromuser) {            Updatevolume (progress);}}       ); * * Modify Volume Range 0~15 * @param progress2*/protected void updatevolume (int volume) {    Am.setstreamvolume ( Audiomanager.stream_music, volume, 0);    Voice_seekbar.setprogress (volume);       Currentvolume = volume;}

3_ Mute and non-muted

Case R.id.btn_voice:ismute =!ismute;updatevolume (currentvolume); break;/** * Modify Volume range 0~15 * @param progress2*/protected void Updatevolume (int volume) {if (Ismute) {am.setstreamvolume (audiomanager.stream_music, 0, 0); Voice_ Seekbar.setprogress (0);} Else{am.setstreamvolume (Audiomanager.stream_music, volume, 0); voice_seekbar.setprogress (volume);} Currentvolume = Volume;}

2. Swipe up and down on the screen to change the size of your voice

Private  Float starty;/** * Sliding area */private Float touchrang;/** * Current volume */private  int mvol; @Overridepublic Boolean Ontouchevent (motionevent event) {switch (event.getaction ()) {case motionevent.action_down://finger press the screen//1. Record related Values Starty = Event.gety (); Touchrang =math.min (ScreenWidth, screenheight);//screenheightmvol = Am.getstreamvolume ( Audiomanager.stream_music); handler.removemessages (Hide_mediacontrol); Break;case motionevent.action_move:// The finger moves//2 on the screen. came to the end of the coordinates of float EndY = Event.gety ();//3. calculated offset Float Distancey = starty-endy;//to change the sound = (sliding distance/total distance) * Max Volume float D Elta = (Distancey/touchrang) *maxvolume;//final sound = original sound + to change the sound of float volum  e = math.min (Math.max (mvol+delta,0), Maxvolume); if (Delta! = 0) {updatavolumeprogress ((int) volume);} Starty = Event.gety (); break;case motionevent.action_up://finger off screen handler.sendemptymessagedelayed (HIDE_ mediacontrol,5000); break;} Return Super.ontouchevent (event);}

3. Monitor to change sound size by phone sound

@Overridepublic boolean onKeyDown (int keycode, keyevent event) {    if (keycode = = Keyevent.keycode_volume_down) {        currentvolume--;        Updatavolumeprogress (currentvolume);        Handler.removemessages (Hide_mediacontrol);        Handler.sendemptymessagedelayed (Hide_mediacontrol,);        return true;    } else if (KeyCode ==keyevent.keycode_volume_up) {        currentvolume++;        Updatavolumeprogress (currentvolume);        Handler.removemessages (Hide_mediacontrol);        Handler.sendemptymessagedelayed (Hide_mediacontrol,);        return true;    }    

　　

　　

　　

Basic functions of mobile AV 7--video player (4)