这是我的代码,当应用程序启动时,我只看到一个黑屏。 我希望应用程序添加时间计数器,但我认为我的多线程有一些问题。
timeCounter.startcount();
while(pressed!=true){
if (!holder.getSurface().isValid())
continue;
Canvas c= holder.lockCanvas();
c.drawBitmap(galaxy, 30, 0, null);
c.drawBitmap(player, x-(player.getWidth()/2), y-(player.getHeight()/2), null);
c.drawText(timeCounter.toString(), 30, 60, timerpaint);
holder.unlockCanvasAndPost(c);
}
}
计时器类(我不确定这个线程是否正常):
public class TimeCounter
{
private int smallestseconds=0;
private int seconds=0;
private int minute=0;
public TimeCounter()
{
smallestseconds=0;
seconds=0;
minute=0;
}
public void startcount()
{
Thread t=new Thread();
while(pressed!=true)
{
try{
t.sleep(10);
}catch(InterruptedException e){
smallestseconds++;
if(smallestseconds==100)
{
smallestseconds=0;
seconds++;
if(seconds==60)
{
seconds=0;
minute++;
}
}
}
}
}
public String toString()
{
return(minute+":"+seconds+":"+smallestseconds);
}
}