switch (type)
{
case 0:
currentPlay ++;
if(currentPlay > numOfMusic)return 0;
else return currentPlay;
case 1:
currentPlay ++;
if(currentPlay > numOfMusic) return 1;
else return currentPlay;
switch (type)
{
case 0:
currentPlay ++;
if(currentPlay > numOfMusic)return 0;
else return currentPlay;
case 1:
currentPlay ++;
if(currentPlay > numOfMusic) return 1;
else return currentPlay;